feat: Basic agent-client service

Reviewed-on: #11

.github/actions/setup-rust/action.yml

@@ -22,7 +22,7 @@ runs:
         fetch-depth: 0
 
     - name: Cache cargo registry
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.cargo/registry
         key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
@@ -30,7 +30,7 @@ runs:
           ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
     - name: Cache cargo index
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.cargo/index
         key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
@@ -51,7 +51,7 @@ runs:
           ${{ runner.os }}-rustup-
 
     - name: Cache cargo build (target)
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: target
         key: ${{ runner.os }}-cargo-build-${{ hashFiles('**/Cargo.lock') }}

.github/workflows/test.yml

@@ -12,11 +12,8 @@ on:
 
 
 jobs:
-  # setup is now handled by a composite action used by downstream jobs to keep
-  # the workflow DRY. The composite action performs checkout, cache restore and
-  # toolchain setup.
 
-  test:
+  test-crates:
     needs: frontend-build
     runs-on: ubuntu-latest
     steps:
@@ -39,7 +36,7 @@ jobs:
       - name: Run tests
         run: cargo test --all-features
 
-  lint:
+  lint-crates:
     needs: frontend-build
     runs-on: ubuntu-latest
     steps:
@@ -83,7 +80,7 @@ jobs:
         with:
           node-version: 22
           cache: 'pnpm'
-          cache-dependency-path: apps/frontend/pnpm-lock.yaml
+          cache-dependency-path: pnpm-lock.yaml
 
       - name: Install frontend dependencies
         run: |
@@ -114,7 +111,7 @@ jobs:
         with:
           node-version: 22
           cache: 'pnpm'
-          cache-dependency-path: apps/frontend/pnpm-lock.yaml
+          cache-dependency-path: pnpm-lock.yaml
 
       - name: Install frontend dependencies
         run: |
@@ -142,12 +139,12 @@ jobs:
         with:
           node-version: 22
           cache: 'pnpm'
-          cache-dependency-path: apps/frontend/pnpm-lock.yaml
+          cache-dependency-path: pnpm-lock.yaml
 
       - name: Install frontend dependencies
         run: |
           cd apps/frontend
-          pnpm install
+          pnpm install --frozen-lockfile
 
       - name: Build frontend
         run: |

.github/workflows/verify.yml

@@ -11,11 +11,8 @@ on:
 
 
 jobs:
-  # setup is now handled by a composite action used by downstream jobs to keep
-  # the workflow DRY. The composite action performs checkout, cache restore and
-  # toolchain setup.
 
-  verify-generated-code:
+  verify-generated-database-code:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
@@ -32,14 +29,62 @@ jobs:
           cargo run -- db:migrate_and_generate --output-path ../../public/database/src/generated/entities
       - name: Check for uncommitted changes in /generated/
         run: |
-          if [[ -n $(git status --porcelain | grep '^ M .*\/generated\/') ]]; then
+          if [[ -n $(git status --porcelain --untracked-files=all | grep '/generated/') ]]; then
             echo "Generated code is not up to date. Please run the code generation locally and commit the changes."
-            git status --porcelain | grep '^ M .*\/generated\/'
+            git status --porcelain --untracked-files=all | grep '/generated/'
             exit 1
           else
             echo "Generated code is up to date."
           fi
 
+  verify-generated-agent-code:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-java@v5
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
+      - name: Setup Rust, checkout and restore caches
+        uses: ./.github/actions/setup-rust
+
+      - name: Setup PNPM
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10
+          run_install: false
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: 'pnpm'
+          cache-dependency-path: pnpm-lock.yaml
+
+      - name: Install root dependencies
+        run: |
+          pnpm install --frozen-lockfile
+
+      - name: generate agent client code
+        run: |
+          pnpm just generate-agent-client
+
+
+      - name: Check for uncommitted changes in agent client code
+        run: |
+          if [[ -n $(git status --porcelain --untracked-files=all | grep 'public/agent-client/') ]]; then
+            echo "Agent client code is not up to date. Please run the agent client code generation locally and commit the changes."
+            git status --porcelain --untracked-files=all | grep 'public/agent-client/'
+            exit 1
+          else
+            echo "Agent client code is up to date."
+          fi
+
   verify-openapi-spec:
     runs-on: ubuntu-latest
     steps:
@@ -99,9 +144,9 @@ jobs:
       - name: Check for uncommitted changes in swagger.json
         if: steps.check_changes.outputs.changed == 'true'
         run: |
-          if [[ -n $(git status --porcelain | grep '^ M apps/api/swagger.json') ]]; then
+          if [[ -n $(git status --porcelain --untracked-files=all | grep 'apps/api/swagger.json') ]]; then
             echo "OpenAPI spec is not up to date. Please run the OpenAPI generation locally and commit the changes."
-            git status --porcelain | grep '^ M apps/api/swagger.json'
+            git status --porcelain --untracked-files=all | grep 'apps/api/swagger.json'
             exit 1
           else
             echo "OpenAPI spec is up to date."
@@ -165,7 +210,7 @@ jobs:
         with:
           node-version: 22
           cache: 'pnpm'
-          cache-dependency-path: apps/frontend/pnpm-lock.yaml
+          cache-dependency-path: pnpm-lock.yaml
 
       - name: Install frontend dependencies
         if: steps.check_swagger_changes.outputs.changed == 'true'
@@ -182,9 +227,9 @@ jobs:
       - name: Check for uncommitted changes in frontend API client
         if: steps.check_swagger_changes.outputs.changed == 'true'
         run: |
-          if [[ -n $(git status --porcelain | grep '^ M apps/frontend/app/generated/api-client') ]]; then
+          if [[ -n $(git status --porcelain --untracked-files=all | grep 'apps/frontend/app/generated/api-client') ]]; then
             echo "Frontend API client is not up to date. Please run the API client generation locally and commit the changes."
-            git status --porcelain | grep '^ M apps/frontend/app/generated/api-client'
+            git status --porcelain --untracked-files=all | grep 'apps/frontend/app/generated/api-client'
             exit 1
           else
             echo "Frontend API client is up to date."

.gitignore

@@ -27,3 +27,5 @@ target
 .env.generated
 
 generated-config.yaml
+
+node_modules/

Cargo.toml

@@ -3,6 +3,8 @@ members = [
     "apps/api",
     "apps/container",
     "apps/cli",
+    "apps/agent",
+    "public/agent-client",
     "public/shared",
     "public/database",
     "public/migration"

apps/agent/.gitignore

@@ -0,0 +1 @@
+*.sock

apps/agent/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "yanpm-agent"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+axum = { version = "0.8.7", features = ["form", "http1", "json", "matched-path", "original-uri", "query", "tokio", "tower-log", "tracing", "macros"] }
+tokio = { version = "1", features = ["fs", "io-util", "io-std", "macros", "net", "parking_lot", "process", "rt", "rt-multi-thread", "signal", "sync", "time", "tracing"] }
+tracing = { version = "0.1.41", features = ["std", "attributes"] }
+tracing-subscriber = { version = "0.3.20", features = ["smallvec", "fmt", "ansi", "tracing-log", "std", "json", "serde", "serde_json", "time", "tracing"] }
+serde_json = { version = "1.0.145", features = ["std"] }
+serde = { version = "1.0.228", features = ["std", "derive"] }
+tokio-cron-scheduler = { version = "0.15.1", features = ["signal"] }
+clap = { version = "4", features = ["derive", "env"] }
+nix = { version = "0.30.1", features = ["user", "fs"] }
+utoipa = { version = "5.4.0", features = ["macros", "axum_extras", "chrono", "decimal", "uuid", "time", "openapi_extensions"] }

apps/agent/Dockerfile

@@ -0,0 +1,56 @@
+FROM rust:1.92-alpine3.23 AS builder
+
+# Install build deps and binutils (for strip)
+RUN apk add --no-cache build-base musl-dev openssl-dev pkgconfig ca-certificates curl binutils
+WORKDIR /app
+
+# Copy manifest first to leverage Docker layer caching for dependencies
+COPY ./Cargo.toml ./
+RUN cargo fetch --locked || true
+
+COPY ./src ./src
+
+# Build the release binary and strip it to reduce size
+RUN cargo build --release --bin yanpm-agent && \
+  strip target/release/yanpm-agent || true
+
+FROM nginx:mainline-alpine3.23 AS base
+
+# Expose typical HTTP ports used by nginx
+EXPOSE 80 443
+
+ENV S6_KEEP_ENV=1
+ENV YANPM_AGENT_SOCK=/var/run/yanpm/yanpm-agent.sock
+ENV YANPM_NGINX_CONFIG_DIR=/etc/nginx/conf.d
+ENV YANPM_AGENT_SOCK_PERM=660
+ENV YANPM_AGENT_SOCK_GID=""
+ENV YANPM_AGENT_UID=1000
+ENV YANPM_AGENT_GID=1000
+
+WORKDIR /app
+
+# Install ca-certificates for TLS and minimal tools
+RUN apk add --no-cache ca-certificates curl
+
+# Install s6-overlay
+ENV S6_OVERLAY_VERSION=v3.2.1.0
+ADD https://github.com/just-containers/s6-overlay/releases/download/${S6_OVERLAY_VERSION}/s6-overlay-noarch.tar.xz /tmp
+RUN tar -C / -Jxpf /tmp/s6-overlay-noarch.tar.xz && rm /tmp/s6-overlay-noarch.tar.xz
+ADD https://github.com/just-containers/s6-overlay/releases/download/${S6_OVERLAY_VERSION}/s6-overlay-x86_64.tar.xz /tmp/s6-overlay.tar.xz
+RUN tar -C / -Jxpf /tmp/s6-overlay.tar.xz && rm /tmp/s6-overlay.tar.xz
+
+# Runtime user creation handled by s6 cont-init (see /etc/cont-init.d)
+# create directory for yanpm agent socket; ownership will be fixed at container start
+RUN mkdir -p /var/run/yanpm
+
+# Copy s6 service definitions (created in repo under s6/) into image
+COPY ./docker/s6/services.d /etc/services.d
+COPY ./docker/s6/cont-init.d /etc/cont-init.d
+RUN chmod +x /etc/services.d/*/run && chmod +x /etc/cont-init.d/*
+
+COPY --from=builder /app/target/release/yanpm-agent ./yanpm-agent
+
+RUN chmod +x /app/yanpm-agent
+
+# s6-overlay provides /init as the init process
+ENTRYPOINT ["/init"]

apps/agent/doc/README.md

@@ -0,0 +1,19 @@
+# yanpm-agent Documentation
+
+This directory contains in-depth documentation for the yanpm agent daemon (the binary built from `apps/agent`). The agent exposes a unix-socket HTTP API for writing nginx configuration fragments, validating them, and reloading nginx safely.
+
+Docs included:
+
+- `architecture.md` — Detailed explanation of the program flow and components.
+- `configuration.md` — CLI flags, environment variables, defaults, and permission handling.
+- `usage.md` — How to run the agent, curl examples, and systemd/docker hints.
+- `api.md` — HTTP API endpoints, request and response schemas, examples.
+- `deployment.md` — Deployment considerations, permissions, and systemd socket/unit examples.
+- `troubleshooting.md` — Common errors and solutions.
+
+For implementation details, see the source in `apps/agent/src` (notably `main.rs`, `routes.rs`, and the `commands/` submodule).
+
+Integration notes
+
+- The agent is intended to run as a companion agent for the API service in `apps/api`. The API service calls the agent over the unix-domain socket to write nginx fragments, validate them, and trigger reloads.
+- A production Docker image is provided by `apps/agent/Dockerfile`. That Dockerfile packages nginx + the `yanpm-agent` binary and s6-overlay service scripts so a single container can run nginx and the agent alongside each other.

apps/agent/doc/api.md

@@ -0,0 +1,68 @@
+# HTTP API Reference
+
+Base: HTTP over a unix-domain socket. Example using curl: `curl --unix-socket /path/to/socket -X POST http://localhost/<path>`
+
+1) GET /status
+
+   - Response: 200 OK
+   - Body: JSON `{ "ok": true }`
+
+2) POST /validate
+
+   - Request JSON:
+
+   ```json
+   {
+     "config_name": "example",
+     "timestamp": 1234567890
+   }
+   ```
+
+   - Behavior: validates the fragment file named by `config_name` and `timestamp` under the agent's internal subdirectory inside the configured nginx config directory. Delegates to `ValidateCommand::validate`.
+   - Success: 200 OK, body is `[rc, output]` tuple serialized as JSON (actual shape is `(i32, String)` returned from the command; examine responses for exact formatting).
+   - Error cases:
+     - 400 Bad Request: invalid or malformed JSON
+     - 500 Internal Server Error: validation error or missing fragment file
+
+   - Request JSON:
+
+   ```json
+   {
+      "config_name": "example",
+      "timestamp": 1234567890
+   }
+   ```
+
+   - Behavior: validates the fragment file named by `config_name` and `timestamp` under the agent's internal subdirectory inside the configured nginx config directory. Delegates to `ValidateCommand::validate`.
+   - Success: 200 OK, body is a JSON array `[rc, output]` where `rc` is the integer return code and `output` is the combined stdout/stderr string from the validation command (the command returns an `(i32, String)` tuple).
+   - Error cases:
+      - 400 Bad Request: invalid or malformed JSON
+      - 500 Internal Server Error: validation error or missing fragment file
+
+3) POST /validate_and_reload
+
+   - Request JSON same as `/validate`.
+   - Behavior: runs validation and, on success, attempts to reload nginx. Returns an object with `rc` and `ro` (return code and combined stdout/stderr output).
+   - Success: 200 OK with body: `{ "rc": <int>, "ro": "<output>" }`
+   - Errors: 400 for malformed JSON, 500 if the validate-and-reload command fails (body presents error text).
+
+4) POST /write_config
+
+   - Request JSON:
+
+   ```json
+   {
+     "config_name": "example",
+     "timestamp": 1234567890,
+     "content": "server { ... }"
+   }
+   ```
+
+   - Behavior: writes the provided `content` into an agent-managed fragment file named from `config_name` and `timestamp` in the internal subdirectory under `nginx_config_dir`.
+   - Success: 200 OK with empty body
+   - Error: 400 for malformed JSON, 500 if writing the file fails
+
+Notes
+
+- The agent expects callers to choose a `config_name` and `timestamp` that together form a unique filename. The concrete filename encoding is performed by `commands::run::to_file_name` in source.
+- On validation failures the returned output often contains the full `nginx -t` output; inspect `ro` or the returned JSON error messages.

apps/agent/doc/architecture.md

@@ -0,0 +1,34 @@
+# Architecture and Runtime Flow
+
+Overview
+
+- The agent is an async HTTP server (axum) listening on a Unix domain socket and exposes a small JSON API to manage nginx configuration fragments.
+- Core lifecycle is implemented in `apps/agent/src/main.rs`:
+  - parse CLI args and environment variables
+  - ensure the socket path and directory exist and have permissive but secure defaults
+  - bind a `tokio::net::UnixListener` to the socket
+  - create an `NginxService` (shared state) and an in-process cron `JobScheduler`
+  - mount axum routes (`/status`, `/validate`, `/validate_and_reload`, `/write_config`) and serve HTTP over the Unix socket
+
+Key components
+
+- `main.rs` — Bootstrapping, argument handling, socket setup and permission handling, scheduler start, and axum server startup.
+- `routes.rs` — axum handlers for the HTTP API. It deserializes JSON payloads and delegates to `NginxService` methods. Handlers return appropriate HTTP status codes and JSON on error or success.
+- `commands/` — Implementation of lower-level actions (writing fragment files, running `nginx -t`, validating, reloads). The `validate.rs` command contains sophisticated behavior to handle permission-limited environments by:
+  - creating wrapper nginx configs that include a single fragment
+  - trying `nginx -t` directly, attempting a privileged wrapper via `sudo` if available, and finally passing a writable PID override via `-g pid ...;` to avoid permission failures
+
+Concurrency and state
+
+- A single shared `NginxService` instance is stored in axum `State` and cloned into handlers; it holds the scheduler and the configured nginx config directory path.
+- The JobScheduler is created with `tokio_cron_scheduler::JobScheduler` and started before serving requests.
+
+Error handling and best-effort behavior
+
+- Socket permission changes, GID changes, and directory creations are best-effort and log warnings on failure rather than failing hard.
+- Most command failures are converted into JSON errors with appropriate HTTP status codes so callers can inspect command output.
+
+Integration and packaging
+
+- The agent is intended to run as a companion to the API server in `apps/api`. The API calls the agent over the unix socket to write fragments, validate them, and trigger reloads.
+- `apps/agent/Dockerfile` builds a runtime image that includes `nginx` and the `yanpm-agent` binary (the Dockerfile uses s6-overlay to run multiple services). This image is suitable for deployments that prefer nginx and the agent colocated in a single container.

apps/agent/doc/configuration.md

@@ -0,0 +1,27 @@
+# Configuration and Environment
+
+CLI flags and environment variables
+
+- `--sock` / `YANPM_AGENT_SOCK` (default: `./yanpm-agent.sock`)
+  - Path to the Unix socket file the agent will bind to.
+  - If the socket directory does not exist the agent attempts to create it and set mode `0770`.
+
+- `--nginx-config-dir` / `YANPM_NGINX_CONFIG_DIR` (default: `/etc/nginx/conf.d`)
+  - Directory where nginx fragments are written. The agent writes fragments into a subdirectory named by the agent (internal use).
+
+- `--sock-perm` / `YANPM_AGENT_SOCK_PERM` (default: `660`)
+  - A 3-digit octal permission string applied to the socket file (best-effort). The program validates this is a 3-digit octal string.
+  - If the final digit is greater than `0` a warning is logged because that allows "others" access.
+
+- `--sock-gid` / `YANPM_AGENT_SOCK_GID` (default: current user's primary group)
+  - GID to set on the socket file (best-effort).
+
+Validation rules and behavior
+
+- `sock_perm` must be exactly 3 octal digits (characters 0-7). The agent rejects invalid values at startup.
+- When an existing path exists at the socket location the agent verifies it is a unix socket; if so it removes it before binding. If the path exists and is not a socket, startup fails.
+- Setting permissions (`set_permissions`) and changing GID (`chown`) are attempted but non-fatal: failures are logged as warnings and the agent continues.
+
+Notes about nginx config directory
+
+- The agent writes fragments into a subdirectory (internal) of the configured `nginx_config_dir`. Ensure nginx is configured to include that subdirectory so fragments are picked up, or use `write_config` then trigger a reload.

apps/agent/doc/deployment.md

@@ -0,0 +1,62 @@
+# Deployment and Permissions
+
+Socket location and permissions
+
+- The agent binds a unix socket at the path given by `--sock` or `YANPM_AGENT_SOCK`. The agent will:
+  - create the parent directory (best-effort) and attempt to set its permissions to `0770`
+  - remove an existing socket file if it is a socket, or fail if the path exists and is not a socket
+  - apply the `sock_perm` (3-digit octal) to the socket file and optionally change its GID to `sock_gid`
+
+Systemd socket/unit example
+
+Create a `yanpm-agent.socket` unit that creates and owns the unix socket, and a `yanpm-agent.service` that runs the agent. Ensure the socket path used by systemd matches `--sock`.
+
+Docker / container notes
+
+- If running the agent inside a container and writing to host nginx config, bind-mount the host nginx config directory into the container at the path provided to `--nginx-config-dir`.
+- Consider running the agent as a user with permission to write the nginx config directory or use a shared group and `sock_gid` so clients can access the socket.
+- The repository provides a runtime image built by `apps/agent/Dockerfile` which packages `nginx` together with the `yanpm-agent` binary and s6-overlay service scripts. This image runs nginx and the agent in one container which is useful when the agent is acting as the runtime companion for the API (`apps/api`).
+
+Privilege escalation for validation
+
+- In many systems `nginx -t` may fail due to inability to access `/run/nginx.pid` or other privileged files. The agent attempts a best-effort sequence:
+
+ 1. Run `nginx -t` directly.
+ 2. If that fails with permission errors, try a privileged wrapper (e.g. `/usr/local/sbin/yanpm-nginx-validate` or `yanpm-nginx-validate-file`) via `sudo -n`.
+ 3. If wrapper is unavailable or fails, retry `nginx -t` with a writable PID override via `-g 'pid /tmp/yanpm-validate-<pid>.pid;'`.
+
+Security considerations
+
+- Avoid setting `sock_perm` to allow world access unless explicitly intended.
+- Prefer controlling socket group membership via `sock_gid` rather than making the socket world-writable.
+
+s6 init scripts, wrappers and sudoers (runtime)
+
+- Purpose: The image built by `apps/agent/Dockerfile` uses `s6-overlay` as PID 1 (the Dockerfile sets `ENTRYPOINT ["/init"]`). The repository includes `docker/s6/cont-init.d` scripts that run at container startup (one-shot) and `docker/s6/services.d` entries to run long-lived services (nginx and the agent). The cont-init scripts prepare runtime users, permissions, and helper wrappers the agent uses for privileged operations.
+
+- Key cont-init scripts (in the repo):
+  - `docker/s6/cont-init.d/10-create-app-user` — ensures the `yanpm-agent` user and group exist (honoring `YANPM_AGENT_UID`, `YANPM_AGENT_GID`, and `YANPM_AGENT_SOCK_GID`), adds the user to the `nginx` group, and attempts to chown runtime directories like `/var/run/yanpm` and `/app/yanpm-agent` (logs warnings if chown fails for bind mounts or rootless containers).
+  - `docker/s6/cont-init.d/20-install-reload-wrapper` — installs three helper wrappers and a sudoers entry so the `yanpm-agent` user can perform narrowly-scoped privileged operations without a password.
+
+- Wrapper scripts installed by `20-install-reload-wrapper`:
+  - `/usr/local/sbin/yanpm-nginx-reload` — runs `nginx -c /etc/nginx/nginx.conf -s reload` (used for reloading the running nginx master process).
+  - `/usr/local/sbin/yanpm-nginx-validate` — runs `nginx -c /etc/nginx/nginx.conf -t` (validates the main nginx config).
+  - `/usr/local/sbin/yanpm-nginx-validate-file` — securely validates a single nginx config file: it resolves the absolute path, ensures the target is a regular file (not a symlink), checks the file is owned by the `yanpm-agent` user, enforces it's not world-writable, then runs `nginx -c <file> -t`. This defends against symlink and race attacks when an unprivileged agent requests privileged validation.
+
+- Sudoers entry:
+  - The init script writes `/etc/sudoers.d/yanpm-agent` with a rule allowing the configured agent user (default `yanpm-agent`) to run only the three wrappers with `NOPASSWD`. This gives the agent a limited, auditable privilege escalation surface; the agent code attempts to use these wrappers via `sudo -n` before falling back to less privileged strategies.
+
+- Relevant environment variables (settable in the Dockerfile or at runtime):
+  - `YANPM_AGENT_SOCK` — unix socket path (default set in Dockerfile: `/var/run/yanpm/yanpm-agent.sock`).
+  - `YANPM_NGINX_CONFIG_DIR` — nginx config dir (default `/etc/nginx/conf.d`).
+  - `YANPM_AGENT_SOCK_PERM` — socket permissions (octal string, default `660`).
+  - `YANPM_AGENT_SOCK_GID` — desired GID for the socket (optional).
+  - `YANPM_AGENT_UID`, `YANPM_AGENT_GID` — runtime UID/GID used to create the `yanpm-agent` user in the container.
+
+- How the agent uses these runtime helpers:
+  - `ValidateCommand` and `ReloadCommand` in the agent code try `nginx` operations directly; when permission problems occur they attempt the privileged wrappers via `sudo -n /usr/local/sbin/yanpm-nginx-validate` or `...-validate-file` and `...-reload`. The cont-init script's wrappers plus the sudoers entry implement that intended secure upgrade path.
+
+- Notes and recommendations:
+  - The `validate-file` wrapper performs ownership and permission checks; ensure written fragments are created by the `yanpm-agent` user (the agent writes files as that user when running inside the container due to `10-create-app-user`).
+  - The cont-init scripts attempt to install `sudo` if missing; in minimal images you may prefer providing `sudo` at build time to avoid runtime installation attempts.
+  - If you bind-mount host directories (e.g., `/etc/nginx/conf.d`) into the container, ensure ownership and permissions are compatible with the agent user and `YANPM_AGENT_SOCK_GID` so the socket and files are accessible as intended.

apps/agent/doc/troubleshooting.md

@@ -0,0 +1,27 @@
+# Troubleshooting
+
+Common issues and how to resolve them
+
+- Socket path exists but is not a socket
+  - Symptom: startup fails with an error that the socket path exists and is not a socket.
+  - Fix: remove the file at the socket path or choose a different `--sock` path.
+
+- Permission denied on socket directory or socket
+  - Symptom: socket creation or permission setting logs warnings; clients cannot connect.
+  - Fix: ensure the socket directory exists and has correct ownership/group and that `sock_perm` and `sock_gid` are configured appropriately. Consider using `chown`/`chmod` from a privileged context.
+
+- `nginx -t` fails with `/run/nginx.pid: Permission denied`
+  - Symptom: validation fails; output contains permission denied for `/run/nginx.pid`.
+  - Fixes (tried by the agent):
+    1. If available, provide a privileged validation wrapper (e.g. `/usr/local/sbin/yanpm-nginx-validate`) that runs `nginx -t` with appropriate privileges.
+    2. Ensure the agent-runner has permission to read the main nginx configuration and `/run/nginx.pid` or allow the agent to use a writable PID override.
+
+- Fragment file not found during validation
+  - Symptom: validate returns 500 with message `Config file not found`.
+  - Fix: make sure the fragment has been written via `/write_config` to the agent's internal subdirectory under `NGINX_CONFIG_DIR`, using the same `config_name` and `timestamp` as the validate call.
+
+- Wrapper or sudo not available
+  - Symptom: attempts to run `sudo -n /usr/local/sbin/yanpm-nginx-validate` fail.
+  - Fix: install a wrapper script that allows unprivileged `sudo -n` validation or configure proper permissions on nginx state files.
+
+If none of the above solves the problem, collect the logs produced by the agent (it uses `tracing`/`tracing_subscriber`) and include the exact command outputs from the validation steps when asking for help.

apps/agent/doc/usage.md

@@ -0,0 +1,61 @@
+# Usage and Examples
+
+Running locally (development)
+
+1. Build the agent (from repository root):
+
+   ```sh
+   cargo build -p agent
+   ```
+
+2. Run the agent with defaults (socket in current directory):
+
+   ```sh
+   ./target/debug/yanpm-agent
+   ```
+
+3. Run with explicit socket and nginx config directory:
+
+   ```sh
+   ./target/debug/yanpm-agent --sock /run/yanpm/yanpm-agent.sock --nginx-config-dir /etc/nginx/conf.d
+   ```
+
+HTTP over unix-socket examples (using `socat` / `curl` helper)
+
+If you want to call the API from the shell, you can use `socat` to convert the unix socket to an HTTP stream, or use tools that support unix sockets directly (e.g. `curl --unix-socket`). Examples below use `curl --unix-socket`.
+
+Validate a fragment by name and timestamp:
+
+```sh
+curl --unix-socket ./yanpm-agent.sock -X POST http://localhost/validate \
+  -H 'Content-Type: application/json' \
+  -d '{"config_name":"example","timestamp":1234567890}'
+```
+
+Validate and reload (returns `rc` and `ro`):
+
+```sh
+curl --unix-socket ./yanpm-agent.sock -X POST http://localhost/validate_and_reload \
+  -H 'Content-Type: application/json' \
+  -d '{"config_name":"example","timestamp":1234567890}'
+```
+
+Write a fragment (create or update):
+
+```sh
+curl --unix-socket ./yanpm-agent.sock -X POST http://localhost/write_config \
+  -H 'Content-Type: application/json' \
+  -d '{"config_name":"example","timestamp":1234567890,"content":"server { listen 80; server_name example.local; }"}'
+```
+
+Status endpoint (health)
+
+```sh
+curl --unix-socket ./yanpm-agent.sock http://localhost/status
+```
+
+Notes
+
+- Use the `config_name` and `timestamp` fields consistently: `timestamp` is typically a monotonic update ID from the caller ensuring unique file names.
+- When running in containers, mount the host nginx config dir if you want the agent to write directly to host nginx configuration.
+- The repository includes a runtime Docker image built by `apps/agent/Dockerfile` which bundles `nginx` and the `yanpm-agent` binary (via s6-overlay). Use that image when you want nginx and the agent colocated (the agent is intended as a runtime companion to `apps/api`).

apps/agent/docker/s6/cont-init.d/10-create-app-user

@@ -0,0 +1,58 @@
+#!/bin/sh
+set -eu
+
+YANPM_AGENT_UID="${YANPM_AGENT_UID:-1000}"
+YANPM_AGENT_GID="${YANPM_AGENT_GID:-1000}"
+# If a specific socket GID is requested, prefer that for the app group
+YANPM_AGENT_GID_EFFECTIVE="${YANPM_AGENT_SOCK_GID:-${YANPM_AGENT_GID}}"
+YANPM_AGENT_USER="${YANPM_AGENT_USER:-yanpm-agent}"
+YANPM_AGENT_GROUP="${YANPM_AGENT_GROUP:-yanpm-agent}"
+
+# Ensure group exists with desired GID
+if grep -qE "^${YANPM_AGENT_GROUP}:" /etc/group 2>/dev/null; then
+  existing_gid=$(awk -F: -v g="${YANPM_AGENT_GROUP}" '$1==g{print $3}' /etc/group)
+  if [ "${existing_gid}" != "${YANPM_AGENT_GID_EFFECTIVE}" ]; then
+    delgroup "${YANPM_AGENT_GROUP}" || true
+    addgroup -g "${YANPM_AGENT_GID_EFFECTIVE}" "${YANPM_AGENT_GROUP}"
+  fi
+else
+  addgroup -g "${YANPM_AGENT_GID_EFFECTIVE}" "${YANPM_AGENT_GROUP}"
+fi
+
+# Ensure user exists with desired UID and primary group
+if grep -qE "^${YANPM_AGENT_USER}:" /etc/passwd 2>/dev/null; then
+  existing_uid=$(awk -F: -v u="${YANPM_AGENT_USER}" '$1==u{print $3}' /etc/passwd)
+  if [ "${existing_uid}" != "${YANPM_AGENT_UID}" ]; then
+    deluser "${YANPM_AGENT_USER}" || true
+    adduser -D -u "${YANPM_AGENT_UID}" -G "${YANPM_AGENT_GROUP}" "${YANPM_AGENT_USER}"
+  fi
+else
+  adduser -D -u "${YANPM_AGENT_UID}" -G "${YANPM_AGENT_GROUP}" "${YANPM_AGENT_USER}"
+fi
+
+# Add app user to nginx group to allow reading configs
+addgroup "${YANPM_AGENT_USER}" nginx || true
+# Ensure runtime directories exist and fix ownership
+
+mkdir -p /var/run/yanpm /app
+if chown -R "${YANPM_AGENT_UID}:${YANPM_AGENT_GID_EFFECTIVE}" /var/run/yanpm 2>/dev/null; then
+  echo "chown: /var/run/yanpm -> ${YANPM_AGENT_UID}:${YANPM_AGENT_GID_EFFECTIVE}"
+else
+  echo "Warning: failed to chown /var/run/yanpm to ${YANPM_AGENT_UID}:${YANPM_AGENT_GID_EFFECTIVE}. This is common for bind-mounted host volumes or rootless Docker." >&2
+fi
+
+if chown -R "${YANPM_AGENT_UID}:${YANPM_AGENT_GID_EFFECTIVE}" /app/yanpm-agent 2>/dev/null; then
+  echo "chown: /app/yanpm-agent -> ${YANPM_AGENT_UID}:${YANPM_AGENT_GID_EFFECTIVE}"
+else
+  echo "Warning: failed to chown /app/yanpm-agent to ${YANPM_AGENT_UID}:${YANPM_AGENT_GID_EFFECTIVE}. Binary will still be used if permissions allow." >&2
+fi
+
+if chown "${YANPM_AGENT_UID}:${YANPM_AGENT_GID_EFFECTIVE}" /app 2>/dev/null; then
+  echo "chown: /app -> ${YANPM_AGENT_UID}:${YANPM_AGENT_GID_EFFECTIVE}"
+else
+  echo "Warning: failed to chown /app to ${YANPM_AGENT_UID}:${YANPM_AGENT_GID_EFFECTIVE}." >&2
+fi
+
+echo "App user and group setup complete. UID:${YANPM_AGENT_UID} GID:${YANPM_AGENT_GID_EFFECTIVE}"
+
+exit 0

apps/agent/docker/s6/cont-init.d/20-install-reload-wrapper

@@ -0,0 +1,170 @@
+#!/bin/sh
+set -eu
+
+# This init script installs a minimal nginx reload wrapper and a sudoers
+# entry so the `yanpm-agent` user can perform a controlled reload via sudo.
+
+WRAPPER_PATH="/usr/local/sbin/yanpm-nginx-reload"
+SUDOERS_PATH="/etc/sudoers.d/yanpm-agent"
+AGENT_USER="${YANPM_AGENT_USER:-yanpm-agent}"
+
+# validate wrapper
+VALIDATE_PATH="/usr/local/sbin/yanpm-nginx-validate"
+# validate file wrapper
+VALIDATE_FILE_PATH="/usr/local/sbin/yanpm-nginx-validate-file"
+
+echo "[cont-init.d] install-reload-wrapper: setting up nginx reload helper"
+
+# find nginx binary
+NGINX_BIN="$(command -v nginx || true)"
+if [ -z "${NGINX_BIN}" ]; then
+  echo "Warning: nginx binary not found in PATH; wrapper will still be created but may fail at runtime." >&2
+  NGINX_BIN="/usr/sbin/nginx"
+fi
+
+# Create wrapper
+mkdir -p /usr/local/sbin /etc/sudoers.d
+
+cat > "${WRAPPER_PATH}" <<- 'EOF'
+#!/bin/sh
+exec "@NGINX_BIN@" -c /etc/nginx/nginx.conf -s reload
+EOF
+
+# Replace placeholder with actual path
+sed -i "s|@NGINX_BIN@|${NGINX_BIN}|g" "${WRAPPER_PATH}" || true
+
+chmod 0750 "${WRAPPER_PATH}"
+chown root:root "${WRAPPER_PATH}" || true
+
+#
+#
+#
+
+# Create validate wrapper
+cat > "${VALIDATE_PATH}" <<- 'EOF'
+#!/bin/sh
+exec "@NGINX_BIN@" -c /etc/nginx/nginx.conf -t
+EOF
+
+# Replace placeholder with actual path in validate wrapper
+sed -i "s|@NGINX_BIN@|${NGINX_BIN}|g" "${VALIDATE_PATH}" || true
+
+chmod 0750 "${VALIDATE_PATH}"
+chown root:root "${VALIDATE_PATH}" || true
+
+#
+#
+#
+
+# Create validate file wrapper (secure)
+cat > "${VALIDATE_FILE_PATH}" <<-'EOF'
+#!/bin/sh
+set -eu
+
+if [ $# -ne 1 ]; then
+  echo "Usage: $0 <nginx-config-file>" >&2
+  exit 2
+fi
+
+INPUT="$1"
+
+# Resolve absolute path
+if command -v readlink >/dev/null 2>&1; then
+  TARGET="$(readlink -f -- "$INPUT" 2>/dev/null || true)"
+elif command -v realpath >/dev/null 2>&1; then
+  TARGET="$(realpath -- "$INPUT" 2>/dev/null || true)"
+else
+  echo "Error: no path resolver (readlink/realpath) available" >&2
+  exit 3
+fi
+
+if [ -z "$TARGET" ]; then
+  echo "Error: cannot resolve path: $INPUT" >&2
+  exit 4
+fi
+
+# Must be a regular file and not a symlink
+if [ ! -f "$TARGET" ] || [ -L "$TARGET" ]; then
+  echo "Error: ${TARGET} is not a regular file" >&2
+  exit 5
+fi
+
+# must be created by agent user
+AGENT_UID="$(id -u yanpm-agent 2>/dev/null || true)"
+if [ -z "$AGENT_UID" ]; then
+  echo "Error: yanpm-agent user not found" >&2
+  exit 6
+fi
+
+FILE_UID="$(stat -c %u -- "$TARGET" 2>/dev/null || true)"
+if [ "$FILE_UID" != "$AGENT_UID" ]; then
+  echo "Error: ${TARGET} not owned by yanpm-agent user" >&2
+  exit 7
+fi
+
+# Ensure file is not world-writable; allow typical 664 (rw-rw-r--)
+if command -v stat >/dev/null 2>&1; then
+  MODE="$(stat -c %a -- "$TARGET" 2>/dev/null || true)"
+  if [ -n "$MODE" ]; then
+    OTHERS=$(( MODE % 10 ))
+    if [ $(( OTHERS & 2 )) -ne 0 ]; then
+      echo "Error: ${TARGET} is world-writable" >&2
+      exit 8
+    fi
+  fi
+elif command -v find >/dev/null 2>&1; then
+  if find "$TARGET" -maxdepth 0 -perm /002 -print -quit >/dev/null 2>&1; then
+    echo "Error: ${TARGET} is world-writable" >&2
+    exit 8
+  fi
+fi
+
+exec "@NGINX_BIN@" -c "$TARGET" -t
+EOF
+
+# Replace placeholder with actual path in validate file wrapper
+sed -i "s|@NGINX_BIN@|${NGINX_BIN}|g" "${VALIDATE_FILE_PATH}" || true
+chmod 0750 "${VALIDATE_FILE_PATH}"
+chown root:root "${VALIDATE_FILE_PATH}" || true
+
+echo "Created wrapper: ${WRAPPER_PATH} (owned by root, mode 750)"
+
+#
+#
+#
+
+# Ensure sudoers entry exists allowing the agent to run only this wrapper as root
+if command -v sudo >/dev/null 2>&1; then
+  echo "sudo present; creating sudoers entry"
+  cat > "${SUDOERS_PATH}" <<- EOF
+# Allow ${AGENT_USER} to run the nginx reload and validate wrappers without a password
+${AGENT_USER} ALL=(root) NOPASSWD: ${WRAPPER_PATH}, ${VALIDATE_PATH}, ${VALIDATE_FILE_PATH}
+EOF
+  chmod 0440 "${SUDOERS_PATH}" || true
+  echo "Wrote sudoers entry: ${SUDOERS_PATH}"
+else
+  echo "sudo not found; attempting to install"
+  if command -v apk >/dev/null 2>&1; then
+    apk add --no-cache sudo || true
+  elif command -v apt-get >/dev/null 2>&1; then
+    apt-get update || true
+    apt-get install -y sudo || true
+  elif command -v yum >/dev/null 2>&1; then
+    yum install -y sudo || true
+  else
+    echo "No known package manager to install sudo; please ensure sudo is available in the image." >&2
+  fi
+
+  if command -v sudo >/dev/null 2>&1; then
+    cat > "${SUDOERS_PATH}" <<- EOF
+# Allow ${AGENT_USER} to run the nginx reload and validate wrappers without a password
+${AGENT_USER} ALL=(root) NOPASSWD: ${WRAPPER_PATH}, ${VALIDATE_PATH}, ${VALIDATE_FILE_PATH}
+EOF
+    chmod 0440 "${SUDOERS_PATH}" || true
+    echo "Installed sudo and wrote sudoers entry: ${SUDOERS_PATH}"
+  else
+    echo "Failed to install sudo; the agent will not be able to reload nginx via sudo." >&2
+  fi
+fi
+
+exit 0

apps/agent/docker/s6/services.d/agent/run

@@ -0,0 +1,5 @@
+#!/bin/sh
+# Run the agent as the unprivileged 'yanpm-agent' user
+cd /app
+echo "Starting yanpm-agent..."
+exec s6-setuidgid yanpm-agent ./yanpm-agent

apps/agent/docker/s6/services.d/nginx/run

@@ -0,0 +1,3 @@
+#!/bin/sh
+# Run nginx in foreground (s6 will supervise it)
+exec nginx -g 'daemon off;'

apps/agent/justfile

@@ -0,0 +1,2 @@
+build-docker:
+  docker build -t yanpm/agent:latest .

apps/agent/src/commands.rs

@@ -0,0 +1,292 @@
+mod reload;
+mod run;
+mod validate;
+mod write_config;
+
+use std::{
+    collections::HashMap,
+    sync::{
+        Arc,
+        atomic::{AtomicU64, Ordering},
+    },
+};
+
+use tokio::sync::{Mutex, RwLock};
+use tokio_cron_scheduler::{Job, JobScheduler};
+use tracing::{error, info};
+
+use crate::commands::write_config::INTERNAL_CONFIG_FOLDER_NAME;
+
+const OLD_CONFIG_CLEANUP_THRESHOLD: u64 = 3600;
+
+pub struct NginxService {
+    // lock for nginx reload, and timestamp tracking
+    nginx_lock: Mutex<()>,
+    last_applied: AtomicU64,
+    // lock for write_config per (config_name, timestamp)
+    #[allow(clippy::type_complexity)]
+    write_config_lock: RwLock<HashMap<(String, u64), Arc<RwLock<()>>>>,
+    // commands
+    reload_cmd: Arc<reload::ReloadCommand>,
+    validate_cmd: Arc<validate::ValidateCommand>,
+    write_config_cmd: Arc<write_config::WriteConfigCommand>,
+}
+
+impl NginxService {
+    pub async fn new(
+        scheduler: Arc<JobScheduler>,
+        nginx_config_dir: std::path::PathBuf,
+    ) -> Result<Arc<Self>, Box<dyn std::error::Error + Send + Sync>> {
+        let nginx_service = Arc::new(NginxService {
+            nginx_lock: Mutex::new(()),
+            last_applied: AtomicU64::new(0),
+            write_config_lock: RwLock::new(HashMap::new()),
+            // commands
+            reload_cmd: Arc::new(reload::ReloadCommand::default()),
+            validate_cmd: Arc::new(validate::ValidateCommand::new(nginx_config_dir.clone())),
+            write_config_cmd: Arc::new(write_config::WriteConfigCommand::new(nginx_config_dir)),
+        });
+        let mut nginx_service_clone = nginx_service.clone();
+
+        scheduler
+            .clone()
+            // cleanup every 10 minutes
+            .add(Job::new_async("0 */10 * * * *", move |_uuid, _l| {
+                info!("Running nginx_service cleanup job");
+                let nginx_service_clone = nginx_service_clone.clone();
+                let job = Box::pin(async move {
+                    nginx_service_clone.cleanup_unused_lock().await;
+                });
+                info!("NginxService cleanup job completed");
+                job
+            })?)
+            .await?;
+
+        nginx_service_clone = nginx_service.clone();
+
+        scheduler
+            .clone()
+            // cleanup every hour
+            .add(Job::new_async("0 0 */1 * * *", move |_uuid, _l| {
+                info!("Running nginx_service old config cleanup job");
+                let nginx_service_clone = nginx_service_clone.clone();
+                let job = Box::pin(async move {
+                    nginx_service_clone.cleanup_old_configs().await;
+                });
+                info!("NginxService old config cleanup job completed");
+                job
+            })?)
+            .await?;
+
+        Ok(nginx_service)
+    }
+
+    pub async fn validate_and_reload(
+        &self,
+        config_name: &str,
+        timestamp: u64,
+    ) -> Result<(i32, String), Box<dyn std::error::Error + Send + Sync>> {
+        let cur = self.last_applied.load(Ordering::SeqCst);
+        if cur > timestamp {
+            return Err("Another operation is in progress with higher timestamp value".into());
+        }
+
+        // acquire write lock to update nginx_lock
+        let _nginx_guard = self.nginx_lock.lock().await;
+        // acquire write lock for this config+timestamp
+        let rw_lock = self.acquire_file_write_lock(config_name, timestamp).await;
+        let _guard = rw_lock.write().await;
+
+        match self
+            .reload_cmd
+            .validate_and_reload(config_name, timestamp, self.validate_cmd.clone())
+            .await
+        {
+            Ok((code, output)) => {
+                // update last_applied
+                self.last_applied.store(timestamp, Ordering::SeqCst);
+                Ok((code, output))
+            }
+            Err(e) => Err(e),
+        }
+    }
+
+    pub async fn write_config(
+        &self,
+        config_name: &str,
+        timestamp: u64,
+        content: &str,
+    ) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+        let rw_lock = self.acquire_file_write_lock(config_name, timestamp).await;
+        let _guard = rw_lock.write().await;
+        // call the write_config command
+        self.write_config_cmd
+            .write_config(config_name, timestamp, content)
+            .await
+    }
+
+    pub async fn validate(
+        &self,
+        config_name: &str,
+        timestamp: u64,
+    ) -> Result<(i32, String), Box<dyn std::error::Error + Send + Sync>> {
+        self.validate_cmd.validate(config_name, timestamp).await
+    }
+
+    async fn cleanup_unused_lock(&self) {
+        let mut _write_lock = self.write_config_lock.write().await;
+        (*_write_lock).retain(|_, lock| {
+            // retain only locks that are currently held (readers or writers)
+            lock.try_write().is_err()
+        });
+    }
+
+    async fn cleanup_old_configs(&self) {
+        // list all files within nginx_config_dir/YANPM that is older than now - OLD_CONFIG_CLEANUP_THRESHOLD
+        let cutoff = std::time::SystemTime::now()
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap()
+            .as_secs()
+            - OLD_CONFIG_CLEANUP_THRESHOLD;
+
+        let nginx_config_dir = self.validate_cmd.nginx_config_dir();
+        let yanpm_dir = nginx_config_dir.join(INTERNAL_CONFIG_FOLDER_NAME);
+
+        let read_dir = match tokio::fs::read_dir(&yanpm_dir).await {
+            Ok(rd) => rd,
+            Err(e) if e.kind() == std::io::ErrorKind::NotFound => {
+                // directory does not exist, nothing to clean up
+                return;
+            }
+            Err(e) => {
+                error!(
+                    "Error reading {} config directory {}: {}",
+                    INTERNAL_CONFIG_FOLDER_NAME,
+                    yanpm_dir.display(),
+                    e
+                );
+                return;
+            }
+        };
+
+        tokio::pin!(read_dir);
+        while let Some(entry) = read_dir.next_entry().await.unwrap_or(None) {
+            let metadata = match entry.metadata().await {
+                Ok(md) => md,
+                Err(e) => {
+                    error!(
+                        "Error getting metadata for file {}: {}",
+                        entry.path().display(),
+                        e
+                    );
+                    continue;
+                }
+            };
+            if let Ok(modified) = metadata.modified()
+                && let Ok(duration) = modified.duration_since(std::time::UNIX_EPOCH)
+            {
+                let mtime_secs = duration.as_secs();
+                if mtime_secs < cutoff {
+                    // file is older than cutoff, remove it
+                    if let Err(e) = tokio::fs::remove_file(entry.path()).await {
+                        error!(
+                            "Error removing old config file {}: {}",
+                            entry.path().display(),
+                            e
+                        );
+                    } else {
+                        info!("Removed old config file {}", entry.path().display());
+                    }
+                }
+            }
+        }
+    }
+
+    async fn acquire_file_write_lock(&self, config_name: &str, timestamp: u64) -> Arc<RwLock<()>> {
+        let mut write_lock = self.write_config_lock.write().await;
+        write_lock
+            .entry((config_name.to_string(), timestamp))
+            .or_insert_with(|| Arc::new(RwLock::new(())))
+            .clone()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::error::Error;
+    use std::sync::Arc as StdArc;
+    use tokio::time::{Duration, sleep};
+
+    impl NginxService {
+        // Test helper that simulates a long-running reload without invoking external commands.
+        pub async fn test_simulated_reload(
+            &self,
+            config_name: &str,
+            timestamp: u64,
+            delay_ms: u64,
+        ) -> Result<(), Box<dyn Error + Send + Sync>> {
+            // pre-check
+            let cur = self.last_applied.load(Ordering::SeqCst);
+            if cur >= timestamp {
+                return Err("stale".into());
+            }
+
+            // acquire exclusive lock and re-check
+            let _nginx_guard = self.nginx_lock.lock().await;
+            let cur2 = self.last_applied.load(Ordering::SeqCst);
+            if cur2 >= timestamp {
+                return Err("stale".into());
+            }
+
+            // per-file lock
+            let rw_lock = self.acquire_file_write_lock(config_name, timestamp).await;
+            let _guard = rw_lock.write().await;
+
+            // simulate operation
+            sleep(Duration::from_millis(delay_ms)).await;
+
+            // on success update last_applied
+            let mut prev = self.last_applied.load(Ordering::SeqCst);
+            while prev < timestamp {
+                match self.last_applied.compare_exchange(
+                    prev,
+                    timestamp,
+                    Ordering::SeqCst,
+                    Ordering::SeqCst,
+                ) {
+                    Ok(_) => break,
+                    Err(next) => prev = next,
+                }
+            }
+
+            Ok(())
+        }
+    }
+
+    #[tokio::test]
+    async fn concurrent_stale_is_rejected() {
+        let scheduler = StdArc::new(JobScheduler::new().await.unwrap());
+        let svc = NginxService::new(scheduler.clone(), std::env::temp_dir())
+            .await
+            .unwrap();
+
+        let s1 = svc.clone();
+        let h1 = tokio::spawn(async move { s1.test_simulated_reload("cfg", 2, 200).await });
+
+        // let second start shortly after first so it will wait for the mutex
+        sleep(Duration::from_millis(20)).await;
+
+        let s2 = svc.clone();
+        let h2 = tokio::spawn(async move { s2.test_simulated_reload("cfg", 1, 10).await });
+
+        let r1 = h1.await.unwrap();
+        assert!(r1.is_ok(), "first (newer) task should succeed");
+
+        let r2 = h2.await.unwrap();
+        assert!(
+            r2.is_err(),
+            "second (older) task should be rejected as stale"
+        );
+    }
+}

apps/agent/src/commands/reload.rs

@@ -0,0 +1,109 @@
+use std::path::Path;
+use std::sync::Arc;
+use std::time::{SystemTime, UNIX_EPOCH};
+
+use tokio::sync::Mutex;
+use tracing::error;
+
+use crate::commands::write_config::INTERNAL_CONFIG_FOLDER_NAME;
+use crate::commands::{run::run_cmd, validate::ValidateCommand};
+
+pub struct ReloadCommand {
+    is_reloading: Mutex<bool>,
+}
+
+struct ReloadResetGuard<'a> {
+    guard: tokio::sync::MutexGuard<'a, bool>,
+}
+
+impl<'a> Drop for ReloadResetGuard<'a> {
+    fn drop(&mut self) {
+        *self.guard = false;
+    }
+}
+
+impl Default for ReloadCommand {
+    fn default() -> Self {
+        Self {
+            is_reloading: Mutex::new(false),
+        }
+    }
+}
+
+impl ReloadCommand {
+    pub async fn validate_and_reload(
+        &self,
+        config_name: &str,
+        timestamp: u64,
+        validate_cmd: Arc<ValidateCommand>,
+    ) -> Result<(i32, String), Box<dyn std::error::Error + Send + Sync>> {
+        // ensure the written fragment exists
+        validate_cmd.validate(config_name, timestamp).await?;
+
+        // Now atomically swap the YANPM.conf symlink to point to the new fragment
+        // so nginx -t validates the composed main config. If validation fails,
+        // attempt to restore the previous symlink.
+        let filename = crate::commands::run::to_file_name(config_name, timestamp)?;
+        let nginx_dir = validate_cmd.nginx_config_dir();
+        let symlink_path = nginx_dir.join("YANPM.conf");
+        let now = SystemTime::now().duration_since(UNIX_EPOCH)?.as_nanos();
+        let tmp_name = format!("YANPM.conf.tmp.{}.{}", std::process::id(), now);
+        let tmp_path = nginx_dir.join(&tmp_name);
+
+        // prepare relative target: INTERNAL_CONFIG_FOLDER_NAME/<filename>
+        let rel_target = Path::new(INTERNAL_CONFIG_FOLDER_NAME).join(&filename);
+
+        // read previous target if exists
+        let previous_target = std::fs::read_link(&symlink_path).ok();
+
+        // Acquire reload guard before mutating the symlink to avoid races
+        let reloading_lock = self.is_reloading.lock().await;
+        if *reloading_lock {
+            return Err("Reload already in progress".into());
+        }
+        // set flag to true and ensure it is reset on drop
+        let mut mut_guard = reloading_lock;
+        *mut_guard = true;
+        let _reset_guard = ReloadResetGuard { guard: mut_guard };
+
+        // create temporary symlink and atomically rename into place
+        std::os::unix::fs::symlink(&rel_target, &tmp_path)?;
+        tokio::fs::rename(&tmp_path, &symlink_path).await?;
+
+        // validate composed main config now that symlink points to new fragment
+        if let Err(e) = validate_cmd.validate_all().await {
+            // restore previous symlink state while still holding the guard
+            if let Some(prev) = previous_target {
+                let restore_tmp =
+                    nginx_dir.join(format!("YANPM.conf.restore.{}.{}", std::process::id(), now));
+                std::os::unix::fs::symlink(&prev, &restore_tmp)?;
+                if let Err(err) = tokio::fs::rename(&restore_tmp, &symlink_path).await {
+                    error!(
+                        "Failed to restore previous YANPM.conf symlink after validation error: {}",
+                        err
+                    );
+                }
+            } else if let Err(err) = tokio::fs::remove_file(&symlink_path).await {
+                error!(
+                    "Failed to remove YANPM.conf symlink after validation error: {}",
+                    err
+                );
+            }
+            return Err(e);
+        }
+
+        // reload the running nginx master process (no -c) so it reloads its configured main config
+        // Prefer the restricted sudo wrapper if available, fall back to direct nginx reload.
+        // TODO: allow configuring the path to the wrapper
+        match run_cmd("sudo", &["-n", "/usr/local/sbin/yanpm-nginx-reload"], 10).await {
+            Ok(res) => Ok(res),
+            Err(e) => {
+                error!(
+                    "sudo reload wrapper failed, falling back to direct nginx reload: {}",
+                    e
+                );
+                run_cmd("nginx", &["-s", "reload"], 10).await
+            }
+        }
+    }
+}

apps/agent/src/commands/run.rs

@@ -0,0 +1,85 @@
+use std::time::Duration;
+
+use tokio::{process::Command, time::timeout};
+use tracing::error;
+
+pub fn to_file_name(
+    config_name: &str,
+    timestamp: u64,
+) -> Result<String, Box<dyn std::error::Error + Send + Sync>> {
+    // reject empty or unsafe names to avoid path traversal or invalid filesystem chars
+    if config_name.is_empty() {
+        return Err("config_name is empty".into());
+    }
+    if config_name.len() > 255 {
+        return Err("config_name too long".into());
+    }
+    if config_name.contains('/') || config_name.contains('\\') || config_name.contains("..") {
+        return Err("config_name contains invalid path characters".into());
+    }
+    if !config_name
+        .chars()
+        .all(|c| c.is_ascii_alphanumeric() || "-._".contains(c))
+    {
+        return Err("config_name contains invalid characters".into());
+    }
+
+    Ok(format!("{}_{}.conf", timestamp, config_name))
+}
+
+pub async fn run_cmd(
+    cmd: &str,
+    args: &[&str],
+    dur_s: u64,
+) -> Result<(i32, String), Box<dyn std::error::Error + Send + Sync>> {
+    let mut c = Command::new(cmd);
+    c.args(args);
+    let res = timeout(Duration::from_secs(dur_s), c.output()).await;
+    let out = match res {
+        Ok(Ok(out)) => out,
+        Ok(Err(e)) => return Err(Box::new(e)),
+        Err(_) => {
+            return Err(Box::new(std::io::Error::new(
+                std::io::ErrorKind::TimedOut,
+                "command timeout",
+            )));
+        }
+    };
+    let code = out.status.code().unwrap_or(-1);
+    let output = String::from_utf8_lossy(&[out.stdout, out.stderr].concat()).to_string();
+    if code != 0 {
+        error!("command failed ({}): {}", code, output);
+        return Err(format!("command failed ({}): {}", code, output).into());
+    }
+    Ok((code, output))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::to_file_name;
+
+    #[test]
+    fn to_file_name_valid() {
+        let res = to_file_name("myconf", 1234).expect("should succeed");
+        assert_eq!(res, "1234_myconf.conf");
+    }
+
+    #[test]
+    fn to_file_name_empty() {
+        assert!(to_file_name("", 1).is_err());
+    }
+
+    #[test]
+    fn to_file_name_invalid_chars() {
+        assert!(to_file_name("bad/name", 1).is_err());
+        assert!(to_file_name("bad\\name", 1).is_err());
+        assert!(to_file_name("bad..name", 1).is_err());
+        assert!(to_file_name("bad$name", 1).is_err());
+    }
+
+    #[test]
+    fn to_file_name_too_long() {
+        let long = "a".repeat(300);
+        assert!(to_file_name(&long, 1).is_err());
+    }
+}

apps/agent/src/commands/validate.rs

@@ -0,0 +1,166 @@
+use tracing::{info, warn};
+
+use crate::commands::{run::run_cmd, write_config::INTERNAL_CONFIG_FOLDER_NAME};
+use std::path::PathBuf;
+
+pub struct ValidateCommand {
+    nginx_config_dir: PathBuf,
+}
+
+impl ValidateCommand {
+    pub fn new(nginx_config_dir: PathBuf) -> Self {
+        Self { nginx_config_dir }
+    }
+
+    pub fn nginx_config_dir(&self) -> PathBuf {
+        self.nginx_config_dir.clone()
+    }
+
+    pub async fn validate_all(
+        &self,
+    ) -> Result<(i32, String), Box<dyn std::error::Error + Send + Sync>> {
+        // Try a normal config test first. If it fails due to pid permission
+        // errors (common when running unprivileged against /run/nginx.pid),
+        // retry with a writable pid override so validation can succeed.
+        match run_cmd("nginx", &["-t"], 10).await {
+            Ok(res) => Ok(res),
+            Err(e) => {
+                info!(
+                    "nginx -t failed: {}. Trying with privileged wrapper or writable pid override.",
+                    e
+                );
+                let es = e.to_string();
+                if es.contains("/run/nginx.pid") && es.contains("Permission denied") {
+                    // Try privileged validate wrapper if available (allows the agent to run
+                    // nginx -t via sudo without modifying the main config).
+                    match run_cmd(
+                        "sudo",
+                        // TODO: allow configuring the path to the wrapper
+                        &["-n", "/usr/local/sbin/yanpm-nginx-validate"],
+                        10,
+                    )
+                    .await
+                    {
+                        Ok(res) => return Ok(res),
+                        Err(e) => {
+                            warn!(
+                                "Privileged validate wrapper failed: {}. Falling back to writable pid override.",
+                                e
+                            );
+                            // Fallback to the existing writable-pid override if sudo wrapper
+                            // isn't available or fails.
+                            let pid_path = format!(
+                                "{}/yanpm-validate-{}.pid",
+                                std::env::temp_dir().display(),
+                                std::process::id()
+                            );
+                            let g_arg = format!("pid {};", pid_path);
+                            let args_vec = ["-t".to_string(), "-g".to_string(), g_arg];
+                            let args_ref: Vec<&str> = args_vec.iter().map(|s| s.as_str()).collect();
+                            return run_cmd("nginx", args_ref.as_slice(), 10).await;
+                        }
+                    }
+                }
+                Err(e)
+            }
+        }
+    }
+
+    pub async fn validate(
+        &self,
+        config_name: &str,
+        timestamp: u64,
+    ) -> Result<(i32, String), Box<dyn std::error::Error + Send + Sync>> {
+        let filename = crate::commands::run::to_file_name(config_name, timestamp)?;
+        // fragments are written into the YANPM subdirectory
+        let full_path = self
+            .nginx_config_dir
+            .join(INTERNAL_CONFIG_FOLDER_NAME)
+            .join(&filename);
+
+        // ensure the fragment file exists
+        if tokio::fs::metadata(&full_path).await.is_err() {
+            return Err(format!("Config file not found: {}", full_path.display()).into());
+        }
+
+        // Create a temporary wrapper nginx config that provides the required
+        // top-level sections (`events` and `http`) and includes the fragment.
+        let fragment_path = full_path.to_str().ok_or("invalid config path")?.to_string();
+
+        let mut tmp_path = std::env::temp_dir();
+        let tmp_name = format!("yanpm-validate-{}-{}.conf", timestamp, std::process::id());
+        tmp_path.push(tmp_name);
+
+        let wrapper = format!(
+            "worker_processes 1;\nevents {{ worker_connections 1024; }}\nhttp {{\n    include {};\n}}\n",
+            fragment_path
+        );
+
+        // Write the temporary wrapper file
+        tokio::fs::write(&tmp_path, wrapper).await?;
+        let tmp_path_str = tmp_path
+            .to_str()
+            .ok_or("invalid temp config path")?
+            .to_string();
+
+        // Run the test against the wrapper, telling nginx to place its pid
+        // somewhere writable so the config test doesn't fail with permission
+        // errors when running as an unprivileged user.
+        let result = match run_cmd("nginx", &["-t", "-c", &tmp_path_str], 10).await {
+            Ok(res) => Ok(res),
+            Err(e) => {
+                info!(
+                    "nginx -t failed: {}. Trying with privileged wrapper or writable pid override.",
+                    e
+                );
+                let es = e.to_string();
+                if es.contains("/run/nginx.pid") && es.contains("Permission denied") {
+                    // Try privileged validate wrapper if available (allows the agent to run
+                    // nginx -t via sudo without modifying the main config).
+                    match run_cmd(
+                        "sudo",
+                        // TODO: allow configuring the path to the wrapper
+                        &[
+                            "-n",
+                            "/usr/local/sbin/yanpm-nginx-validate-file",
+                            &tmp_path_str,
+                        ],
+                        10,
+                    )
+                    .await
+                    {
+                        Ok(res) => return Ok(res),
+                        Err(e) => {
+                            warn!(
+                                "Privileged validate wrapper failed: {}. Falling back to writable pid override.",
+                                e
+                            );
+                            let pid_path = format!(
+                                "{}/yanpm-validate-{}.pid",
+                                std::env::temp_dir().display(),
+                                std::process::id()
+                            );
+                            let g_arg = format!("pid {};", pid_path);
+
+                            let args_vec = [
+                                "-t".to_string(),
+                                "-c".to_string(),
+                                tmp_path_str.clone(),
+                                "-g".to_string(),
+                                g_arg,
+                            ];
+                            let args_ref: Vec<&str> = args_vec.iter().map(|s| s.as_str()).collect();
+
+                            return run_cmd("nginx", args_ref.as_slice(), 10).await;
+                        }
+                    }
+                }
+                Err(e)
+            }
+        };
+
+        let _ = tokio::fs::remove_file(&tmp_path).await;
+
+        result
+    }
+}

apps/agent/src/commands/write_config.rs

@@ -0,0 +1,133 @@
+use std::os::unix::fs::PermissionsExt;
+use std::path::PathBuf;
+use std::time::{SystemTime, UNIX_EPOCH};
+use tokio::io::AsyncWriteExt;
+use tracing::info;
+
+use crate::commands::run::to_file_name;
+
+pub const INTERNAL_CONFIG_FOLDER_NAME: &str = "YANPM";
+const FILE_SIZE_LIMIT: usize = 10 * 1024 * 1024; // 10MB
+
+pub struct WriteConfigCommand {
+    nginx_config_dir: PathBuf,
+}
+
+impl WriteConfigCommand {
+    pub fn new(nginx_config_dir: PathBuf) -> Self {
+        Self { nginx_config_dir }
+    }
+    pub async fn write_config(
+        &self,
+        config_name: &str,
+        timestamp: u64,
+        content: &str,
+    ) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+        let filename = to_file_name(config_name, timestamp)?;
+        let path = self.nginx_config_dir.clone();
+        // ensure main config dir exists
+        tokio::fs::create_dir_all(&path).await?;
+        info!("Writing config to {:?}", path.join(&filename));
+
+        // create YANPM subdir where fragment files live
+        let yanpm_dir = path.join(INTERNAL_CONFIG_FOLDER_NAME);
+        tokio::fs::create_dir_all(&yanpm_dir).await?;
+        let final_path = yanpm_dir.join(&filename);
+
+        // limit size to 10MB
+        if content.len() > FILE_SIZE_LIMIT {
+            return Err(format!(
+                "content exceeds {}MB size limit",
+                FILE_SIZE_LIMIT / (1024 * 1024)
+            )
+            .into());
+        }
+
+        // create a temporary filename in the same directory for atomic replace
+        let now = SystemTime::now().duration_since(UNIX_EPOCH)?.as_nanos();
+        let tmp_filename = format!("{}.tmp.{}.{}", filename, std::process::id(), now);
+        // create tmp file in the same directory as final file to ensure atomic rename
+        let tmp_path = yanpm_dir.join(tmp_filename);
+
+        let mut file = tokio::fs::OpenOptions::new()
+            .create(true)
+            .write(true)
+            .truncate(true)
+            .open(&tmp_path)
+            .await?;
+        file.write_all(content.as_bytes()).await?;
+        // ensure data is flushed to disk; propagate errors
+        file.sync_all().await?;
+
+        // atomically move the tmp file into the YANPM dir
+        tokio::fs::rename(&tmp_path, &final_path).await?;
+
+        // set explicit permissions (rw-r-----)
+        tokio::fs::set_permissions(&final_path, std::fs::Permissions::from_mode(0o640)).await?;
+        info!("Config written and permissions set for {:?}", final_path);
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{INTERNAL_CONFIG_FOLDER_NAME, WriteConfigCommand};
+    use std::time::SystemTime;
+    use std::time::UNIX_EPOCH;
+
+    #[tokio::test]
+    async fn write_config_success_and_cleanup() {
+        let base = std::env::temp_dir().join(format!(
+            "yanpm_test_{}_{}",
+            std::process::id(),
+            SystemTime::now()
+                .duration_since(UNIX_EPOCH)
+                .unwrap()
+                .as_nanos()
+        ));
+        // ensure clean
+        let _ = tokio::fs::remove_dir_all(&base).await;
+        let cmd = WriteConfigCommand::new(base.clone());
+
+        let config_name = "unittest";
+        let timestamp = 42u64;
+        let content = "hello world";
+
+        cmd.write_config(config_name, timestamp, content)
+            .await
+            .expect("write should succeed");
+
+        let filename = super::to_file_name(config_name, timestamp).unwrap();
+        let final_path = base.join(INTERNAL_CONFIG_FOLDER_NAME).join(&filename);
+        let data = tokio::fs::read_to_string(&final_path)
+            .await
+            .expect("file should exist");
+        assert_eq!(data, content);
+
+        // cleanup
+        tokio::fs::remove_dir_all(&base).await.expect("cleanup");
+    }
+
+    #[tokio::test]
+    async fn write_config_size_limit() {
+        let base = std::env::temp_dir().join(format!(
+            "yanpm_test_{}_{}",
+            std::process::id(),
+            SystemTime::now()
+                .duration_since(UNIX_EPOCH)
+                .unwrap()
+                .as_nanos()
+        ));
+        let _ = tokio::fs::remove_dir_all(&base).await;
+        let cmd = WriteConfigCommand::new(base.clone());
+
+        // exceed 10MB limit
+        let large = vec![b'a'; 10 * 1024 * 1024 + 1];
+        let large_str = String::from_utf8_lossy(&large).to_string();
+
+        let res = cmd.write_config("big", 1, &large_str).await;
+        assert!(res.is_err());
+
+        let _ = tokio::fs::remove_dir_all(&base).await;
+    }
+}

apps/agent/src/main.rs

@@ -0,0 +1,221 @@
+#![forbid(unsafe_code)]
+
+mod commands;
+mod openapi;
+mod routes;
+
+use axum::routing::get;
+use axum::{Router, routing::post};
+use clap::Parser;
+use std::os::unix::fs::PermissionsExt;
+use std::path::PathBuf;
+use std::sync::Arc;
+use tokio::net::UnixListener;
+use tracing::{error, info, warn};
+
+use crate::commands::NginxService;
+use crate::openapi::{GenerateOpenapiArgs, generate_openapi_doc};
+use crate::routes::{status, validate, validate_and_reload, write_config};
+
+const SOCK_ENV: &str = "YANPM_AGENT_SOCK";
+const SOCK_PERM_ENV: &str = "YANPM_AGENT_SOCK_PERM";
+const NGINX_CONFIG_DIR_ENV: &str = "YANPM_NGINX_CONFIG_DIR";
+const SOCK_GID_ENV: &str = "YANPM_AGENT_SOCK_GID";
+const SOCK_DEFAULT: &str = "./yanpm-agent.sock";
+const NGINX_CONFIG_DIR_DEFAULT: &str = "/etc/nginx/conf.d";
+const SOCK_PERM_DEFAULT: &str = "660";
+const SOCK_GID_DEFAULT: &str = "";
+
+/// Command line arguments
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+    /// Unix socket path to bind the agent daemon to
+    #[arg(short = 's', long, default_value_t = String::from(SOCK_DEFAULT), env = SOCK_ENV)]
+    sock: String,
+
+    /// Directory where generated nginx config files will be written
+    #[arg(short = 'd', long, default_value_t = String::from(NGINX_CONFIG_DIR_DEFAULT), env = NGINX_CONFIG_DIR_ENV)]
+    nginx_config_dir: String,
+
+    /// Permissions to set on the unix socket (in octal), e.g. 660
+    #[arg(long, default_value_t = String::from(SOCK_PERM_DEFAULT), env = SOCK_PERM_ENV)]
+    sock_perm: String,
+
+    /// GID to set on the unix socket, default: current user's primary group
+    #[arg(long, default_value_t = String::from(SOCK_GID_DEFAULT), env = SOCK_GID_ENV)]
+    sock_gid: String,
+
+    #[command(subcommand)]
+    command: Option<SubCommand>,
+}
+
+#[derive(clap::Subcommand, Debug)]
+pub enum SubCommand {
+    /// Generate OpenAPI spec to file or stdout
+    GenerateOpenapi {
+        /// Output file path.
+        #[arg(short = 'o', long)]
+        output: String,
+    },
+}
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+    let subscriber = tracing_subscriber::fmt()
+        .with_max_level(tracing::Level::INFO)
+        .with_target(false)
+        .with_level(true)
+        .with_timer(tracing_subscriber::fmt::time::SystemTime)
+        .finish();
+
+    tracing::subscriber::set_global_default(subscriber)
+        .expect("Failed to set global default subscriber");
+
+    let args = Args::parse();
+
+    if let Some(cmd) = &args.command {
+        match cmd {
+            SubCommand::GenerateOpenapi { output } => {
+                generate_openapi_doc(&GenerateOpenapiArgs {
+                    output: output.clone(),
+                })
+                .await?;
+                return Ok(());
+            }
+        }
+    }
+
+    let (sock, nginx_config_dir, sock_perm, sock_gid) = get_args(&args).await?;
+
+    let path = PathBuf::from(&sock);
+    if let Some(dir) = path.parent() {
+        tokio::fs::create_dir_all(dir).await.unwrap_or_else(|err| {
+            error!(
+                "Warning: failed to create socket directory {}: {}",
+                dir.display(),
+                err
+            )
+        });
+        // permissive; set tighter perms in production via image/build steps
+        tokio::fs::set_permissions(dir, std::fs::Permissions::from_mode(0o770))
+            .await
+            .unwrap_or_else(|err| {
+                error!(
+                    "Warning: failed to set permissions on socket directory {}: {}",
+                    dir.display(),
+                    err
+                )
+            });
+    }
+    // If an existing path exists at the socket location, ensure it's a socket
+    match tokio::fs::metadata(&path).await {
+        Ok(md) => {
+            use std::os::unix::fs::FileTypeExt;
+            if md.file_type().is_socket() {
+                tokio::fs::remove_file(&path).await.unwrap_or_else(|err| {
+                    error!(
+                        "Warning: failed to remove existing socket file {}: {}",
+                        path.display(),
+                        err
+                    )
+                });
+            } else {
+                return Err(
+                    format!("Socket path {} exists and is not a socket", path.display()).into(),
+                );
+            }
+        }
+        Err(e) if e.kind() == std::io::ErrorKind::NotFound => {}
+        Err(e) => {
+            return Err(format!("Failed to stat socket path {}: {}", path.display(), e).into());
+        }
+    }
+
+    // bind using tokio's UnixListener (avoids converting a blocking std listener)
+    let listener = UnixListener::bind(&path).expect("Failed to bind to unix socket");
+    // set socket perms to sock_perm (best-effort)
+    if let Err(err) =
+        tokio::fs::set_permissions(&path, std::fs::Permissions::from_mode(sock_perm)).await
+    {
+        error!(
+            "Warning: failed to set permissions on socket {}: {}",
+            path.display(),
+            err
+        );
+    }
+
+    // set socket gid to sock_gid (best-effort)
+    if !sock_gid.is_empty() {
+        use nix::unistd::{Gid, chown};
+        if let Err(err) = chown(
+            &path,
+            None,
+            Some(Gid::from_raw(
+                sock_gid
+                    .parse()
+                    .map_err(|e| format!("Failed to parse socket GID {}: {}", sock_gid, e))
+                    .unwrap_or_else(|_| nix::unistd::getgid().as_raw()),
+            )),
+        ) {
+            error!(
+                "Warning: failed to set GID on socket {}: {}",
+                path.display(),
+                err
+            );
+        }
+    }
+
+    let scheduler = Arc::new(tokio_cron_scheduler::JobScheduler::new().await?);
+
+    let app = Router::new()
+        .route("/status", get(status))
+        .route("/validate_and_reload", post(validate_and_reload))
+        .route("/validate", post(validate))
+        .route("/write_config", post(write_config))
+        .with_state(NginxService::new(scheduler.clone(), PathBuf::from(nginx_config_dir)).await?);
+
+    scheduler.clone().start().await?;
+
+    info!("Starting yanpm-daemon on unix socket: {}", sock);
+    axum::serve::serve(listener, app)
+        .await
+        .expect("Failed to start axum server");
+
+    info!("Shutting down yanpm-daemon");
+    Ok(())
+}
+
+async fn get_args(
+    args: &Args,
+) -> Result<(String, String, u32, String), Box<dyn std::error::Error + Send + Sync>> {
+    let sock = args.sock.clone();
+    let nginx_config_dir = args.nginx_config_dir.clone();
+    let sock_perm = args.sock_perm.clone();
+    let sock_gid = args.sock_gid.clone();
+
+    if sock_perm.len() != 3 || !sock_perm.chars().all(|c| ('0'..='7').contains(&c)) {
+        return Err(std::io::Error::new(
+            std::io::ErrorKind::InvalidInput,
+            format!(
+                "Invalid socket permission string: {}. Must be a 3-digit octal number.",
+                sock_perm
+            ),
+        )
+        .into());
+    }
+
+    if sock_perm.chars().last().unwrap() > '0' {
+        warn!(
+            "Socket permission string {} allows others to access the socket. This may be a security risk. Consider setting {} to a desired group and using a socket permission string that does not allow others to access the socket.",
+            sock_perm, SOCK_GID_ENV
+        );
+    };
+
+    Ok((
+        sock,
+        nginx_config_dir,
+        u32::from_str_radix(&sock_perm, 8).expect("Failed to parse socket permission string"),
+        sock_gid,
+    ))
+}

apps/agent/src/openapi.rs

@@ -0,0 +1,45 @@
+use tracing::info;
+use utoipa::OpenApi;
+
+pub mod tag {
+    /// nginx
+    pub const NGINX_TAG: &str = "Nginx Agent";
+}
+
+#[derive(utoipa::OpenApi)]
+#[openapi(
+  paths(
+    crate::routes::status,
+    crate::routes::validate,
+    crate::routes::validate_and_reload,
+    crate::routes::write_config,
+  ),
+  components(
+      schemas(crate::routes::StatusResp),
+      schemas(crate::routes::ValidateAndReloadResp),
+      schemas(crate::routes::ValidateBody),
+      schemas(crate::routes::WriteConfigBody),
+      schemas(crate::routes::ValidateAndReloadBody),
+  ),
+  tags(
+      (name = tag::NGINX_TAG, description = "Nginx Agent API"),
+  )
+)]
+struct ApiDoc;
+
+pub struct GenerateOpenapiArgs {
+    pub output: String,
+}
+
+pub async fn generate_openapi_doc(
+    args: &GenerateOpenapiArgs,
+) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+    info!("Generating OpenAPI documentation...");
+    let doc = ApiDoc::openapi();
+    let json = doc
+        .to_pretty_json()
+        .expect("Failed to serialize OpenAPI doc to JSON");
+    std::fs::write(&args.output, json).expect("Failed to write OpenAPI doc to file");
+    info!("OpenAPI documentation generated at {}", args.output);
+    Ok(())
+}

apps/agent/src/routes.rs

@@ -0,0 +1,167 @@
+use axum::Json;
+use axum::extract::State;
+use axum::http::StatusCode;
+use axum::response::IntoResponse;
+use serde::{Deserialize, Serialize};
+use serde_json::{Value, from_value};
+use std::sync::Arc;
+use tracing::warn;
+
+use crate::commands::NginxService;
+
+#[derive(Serialize, utoipa::ToSchema)]
+pub struct StatusResp {
+    pub ok: bool,
+}
+
+/// Health check endpoint
+#[utoipa::path(
+    get,
+    path = "/status",
+    responses(
+        (status = 200, description = "Status response", body = StatusResp)
+    ),
+    tag = crate::openapi::tag::NGINX_TAG
+)]
+pub async fn status() -> impl IntoResponse {
+    let resp = StatusResp { ok: true };
+    (axum::http::StatusCode::OK, axum::Json(resp))
+}
+
+#[derive(Serialize, utoipa::ToSchema)]
+pub struct ValidateAndReloadResp {
+    pub rc: i32,
+    pub ro: String,
+}
+
+#[derive(Deserialize, utoipa::ToSchema)]
+pub struct ValidateBody {
+    config_name: String,
+    timestamp: u64,
+}
+
+#[utoipa::path(
+    post,
+    path = "/validate",
+    request_body = ValidateBody,
+    responses(
+        (status = 200, description = "Validation response", body = serde_json::Value)
+    ),
+    tag = crate::openapi::tag::NGINX_TAG
+)]
+pub async fn validate(
+    State(nginx_controller): State<Arc<NginxService>>,
+    Json(payload): Json<Value>,
+) -> impl IntoResponse {
+    let params: ValidateBody = match from_value(payload) {
+        Ok(req) => req,
+        Err(e) => {
+            warn!("Invalid validate request: {}", e);
+            return (StatusCode::BAD_REQUEST).into_response();
+        }
+    };
+
+    let resp = match nginx_controller
+        .validate(&params.config_name, params.timestamp)
+        .await
+    {
+        Ok(res) => res,
+        Err(e) => {
+            let resp = serde_json::json!({ "error": e.to_string() });
+            return (StatusCode::INTERNAL_SERVER_ERROR, axum::Json(resp)).into_response();
+        }
+    };
+
+    (axum::http::StatusCode::OK, axum::Json(resp)).into_response()
+}
+
+#[derive(Deserialize, utoipa::ToSchema)]
+pub struct ValidateAndReloadBody {
+    config_name: String,
+    timestamp: u64,
+}
+
+#[utoipa::path(
+    post,
+    path = "/validate_and_reload",
+    request_body = ValidateAndReloadBody,
+    responses(
+        (status = 200, description = "Validate and reload response", body = ValidateAndReloadResp)
+    ),
+    tag = crate::openapi::tag::NGINX_TAG
+)]
+pub async fn validate_and_reload(
+    State(nginx_controller): State<Arc<NginxService>>,
+    Json(payload): Json<Value>,
+) -> impl IntoResponse {
+    let params: ValidateAndReloadBody = match from_value(payload) {
+        Ok(req) => req,
+        Err(e) => {
+            warn!("Invalid validate_and_reload request: {}", e);
+            return (StatusCode::BAD_REQUEST).into_response();
+        }
+    };
+
+    let (code, output) = match nginx_controller
+        .validate_and_reload(&params.config_name, params.timestamp)
+        .await
+    {
+        Ok(res) => res,
+        Err(e) => {
+            let resp = ValidateAndReloadResp {
+                rc: -1,
+                ro: e.to_string(),
+            };
+            return (StatusCode::INTERNAL_SERVER_ERROR, axum::Json(resp)).into_response();
+        }
+    };
+
+    let resp = ValidateAndReloadResp {
+        rc: code,
+        ro: output,
+    };
+    (axum::http::StatusCode::OK, axum::Json(resp)).into_response()
+}
+
+#[derive(Deserialize, utoipa::ToSchema)]
+pub struct WriteConfigBody {
+    config_name: String,
+    timestamp: u64,
+    content: String,
+}
+
+#[utoipa::path(
+    post,
+    path = "/write_config",
+    request_body = WriteConfigBody,
+    responses(
+        (status = 200, description = "Write config response"),
+        (status = 500, description = "Internal server error", body = serde_json::Value)
+    ),
+    tag = crate::openapi::tag::NGINX_TAG
+)]
+pub async fn write_config(
+    State(nginx_controller): State<Arc<NginxService>>,
+    Json(payload): Json<Value>,
+) -> impl IntoResponse {
+    let body: WriteConfigBody = match from_value(payload) {
+        Ok(req) => req,
+        Err(e) => {
+            warn!("Invalid write_config request: {}", e);
+            return (StatusCode::BAD_REQUEST).into_response();
+        }
+    };
+
+    match nginx_controller
+        .write_config(&body.config_name, body.timestamp, &body.content)
+        .await
+    {
+        Ok(_) => (),
+        Err(e) => {
+            let resp = serde_json::json!({ "error": e.to_string() });
+            return (StatusCode::INTERNAL_SERVER_ERROR, axum::Json(resp)).into_response();
+        }
+    };
+
+    (axum::http::StatusCode::OK,).into_response()
+}

apps/agent/swagger.json

@@ -0,0 +1,215 @@
+{
+  "openapi": "3.1.0",
+  "info": {
+    "title": "yanpm-agent",
+    "description": "",
+    "license": {
+      "name": ""
+    },
+    "version": "0.1.0"
+  },
+  "paths": {
+    "/status": {
+      "get": {
+        "tags": [
+          "Nginx Agent"
+        ],
+        "summary": "Health check endpoint",
+        "operationId": "status",
+        "responses": {
+          "200": {
+            "description": "Status response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/StatusResp"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "/validate": {
+      "post": {
+        "tags": [
+          "Nginx Agent"
+        ],
+        "operationId": "validate",
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/ValidateBody"
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "200": {
+            "description": "Validation response",
+            "content": {
+              "application/json": {
+                "schema": {}
+              }
+            }
+          }
+        }
+      }
+    },
+    "/validate_and_reload": {
+      "post": {
+        "tags": [
+          "Nginx Agent"
+        ],
+        "operationId": "validate_and_reload",
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/ValidateAndReloadBody"
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "200": {
+            "description": "Validate and reload response",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ValidateAndReloadResp"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
+    "/write_config": {
+      "post": {
+        "tags": [
+          "Nginx Agent"
+        ],
+        "operationId": "write_config",
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/WriteConfigBody"
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "200": {
+            "description": "Write config response"
+          },
+          "500": {
+            "description": "Internal server error",
+            "content": {
+              "application/json": {
+                "schema": {}
+              }
+            }
+          }
+        }
+      }
+    }
+  },
+  "components": {
+    "schemas": {
+      "StatusResp": {
+        "type": "object",
+        "required": [
+          "ok"
+        ],
+        "properties": {
+          "ok": {
+            "type": "boolean"
+          }
+        }
+      },
+      "ValidateAndReloadBody": {
+        "type": "object",
+        "required": [
+          "config_name",
+          "timestamp"
+        ],
+        "properties": {
+          "config_name": {
+            "type": "string"
+          },
+          "timestamp": {
+            "type": "integer",
+            "format": "int64",
+            "minimum": 0
+          }
+        }
+      },
+      "ValidateAndReloadResp": {
+        "type": "object",
+        "required": [
+          "rc",
+          "ro"
+        ],
+        "properties": {
+          "rc": {
+            "type": "integer",
+            "format": "int32"
+          },
+          "ro": {
+            "type": "string"
+          }
+        }
+      },
+      "ValidateBody": {
+        "type": "object",
+        "required": [
+          "config_name",
+          "timestamp"
+        ],
+        "properties": {
+          "config_name": {
+            "type": "string"
+          },
+          "timestamp": {
+            "type": "integer",
+            "format": "int64",
+            "minimum": 0
+          }
+        }
+      },
+      "WriteConfigBody": {
+        "type": "object",
+        "required": [
+          "config_name",
+          "timestamp",
+          "content"
+        ],
+        "properties": {
+          "config_name": {
+            "type": "string"
+          },
+          "content": {
+            "type": "string"
+          },
+          "timestamp": {
+            "type": "integer",
+            "format": "int64",
+            "minimum": 0
+          }
+        }
+      }
+    }
+  },
+  "tags": [
+    {
+      "name": "Nginx Agent",
+      "description": "Nginx Agent API"
+    }
+  ]
+}

apps/api/Cargo.toml

@@ -6,6 +6,7 @@ edition = "2024"
 [dependencies]
 database = { path = "../../public/database" }
 migration = { path = "../../public/migration" }
+agent_client = { path = "../../public/agent-client" }
 
 axum = { version = "0.8.7", features = ["form", "http1", "http2", "json", "matched-path", "original-uri", "query", "tokio", "tower-log", "tracing", "macros"] }
 axum-extra = { version = "0.12.2", features = ["cookie"] }
@@ -28,4 +29,7 @@ argon2 = { version = "0.5.3", features = ["std"] }
 jsonwebtoken = { version = "10.2.0", features = ["rust_crypto"] }
 uuid = { version = "1.19.0", features = ["v4", "serde", "fast-rng"] }
 tower-http = { version = "0.6.8", features = ["cors"] }
+reqwest = { version = "^0.12", features = ["json", "multipart", "stream"] }
 
+[dev-dependencies]
+tempfile = "3"

apps/api/src/services.rs

@@ -1,3 +1,4 @@
+pub mod agent_client;
 pub mod auth;
 pub mod server_state;
 pub mod settings;

apps/api/src/services/agent_client.rs

@@ -0,0 +1,92 @@
+use std::sync::Arc;
+
+use agent_client::apis::{ApiClient, configuration::Configuration};
+
+pub struct AgentService {
+    client: Arc<ApiClient>,
+}
+
+impl AgentService {
+    pub fn new(config: impl Into<Arc<Configuration>>) -> Self {
+        let client = ApiClient::new(config.into());
+        AgentService {
+            client: Arc::new(client),
+        }
+    }
+
+    pub fn get_client(&self) -> Arc<ApiClient> {
+        Arc::clone(&self.client)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use agent_client::{
+        apis::{Api, nginx_agent_api::StatusSuccess},
+        models::StatusResp,
+    };
+    use axum::{http::StatusCode, response::Json};
+    use std::time::Duration;
+    use tempfile::tempdir;
+    use tokio::time::sleep;
+
+    #[test]
+    fn test_agent_service_creation() {
+        let config = Configuration::default();
+        let service = AgentService::new(config);
+        let client = service.get_client();
+        assert!(Arc::ptr_eq(&client, &service.client));
+    }
+
+    #[tokio::test]
+    async fn test_agent_socket_support() {
+        // create temporary socket path
+        let dir = tempdir().expect("Failed to create temp dir");
+        let socket_path = dir.path().join("agent.sock");
+
+        // create axum app with a simple /status route
+        let app = axum::Router::new().route(
+            "/status",
+            axum::routing::get(|| async {
+                let result: (StatusCode, StatusResp) = (StatusCode::OK, StatusResp { ok: true });
+
+                (result.0, Json(result.1))
+            }),
+        );
+
+        // bind tokio unix listener and serve in background
+        let listener =
+            tokio::net::UnixListener::bind(&socket_path).expect("Failed to bind to unix socket");
+        let server_fut = axum::serve::serve(listener, app);
+        let _srv = tokio::spawn(async move {
+            let _ = server_fut.await;
+        });
+
+        // give server a moment to start
+        sleep(Duration::from_millis(50)).await;
+
+        let client: ApiClient = ApiClient::new(Arc::new(Configuration {
+            base_path: "http://localhost".to_string(),
+            client: reqwest::Client::builder()
+                .unix_socket(socket_path.clone())
+                .build()
+                .expect("Failed to build reqwest client"),
+            ..Default::default()
+        }));
+
+        let res = client
+            .nginx_agent_api()
+            .status()
+            .await
+            .expect("Failed to get status");
+        let body = res.entity.expect("Response entity is missing");
+
+        assert!(res.status.is_success());
+        if let StatusSuccess::Status200(body) = body {
+            assert!(body.ok);
+        } else {
+            panic!("Unexpected response body");
+        }
+    }
+}

apps/cli/Cargo.toml

@@ -8,7 +8,7 @@ async-trait = "0.1.89"
 container-simulate = { path = "../container" }
 migration = {path = "../../public/migration"}
 shared = {path = "../../public/shared"}
-testcontainers = "0.24.0"
+testcontainers = "0.26.0"
 tokio = { version = "1.47.0", features = ["full"] }
 url = "2.5.7"
 clap = { version = "4.5.48", features = ["derive", "env"] }

apps/cli/src/cmd/db_migrate_and_generate.rs

@@ -1,7 +1,7 @@
 use clap::{Arg, Command};
-use container::{
+use container::containers::{
+    ConfigInfoType,
     db::{DBInfo, sqlite::SQLiteContainer},
-    types::ConfigInfoType,
 };
 use migration::{generate_entity, migrate_database};
 use shared::db_type::DBType;
@@ -54,6 +54,7 @@ fn action(
         for db_config in database_configs {
             let config = container::Config {
                 database: db_config,
+                agent: None,
             };
             let mut detached_handler = container::start_detached(&config).await;
             match migrate_and_generate_entity(&config, &output_path).await {

apps/container/Cargo.toml

@@ -9,7 +9,7 @@ path = "src/lib.rs"
 
 [dependencies]
 async-trait = "0.1.89"
-testcontainers = "0.24.0"
+testcontainers = { version = "0.26.0" }
 shared = { path = "../../public/shared" }
 tokio = { version = "1.47.0", features = ["full"] }
 url = "2.5.7"

apps/container/src/containers.rs

@@ -0,0 +1,40 @@
+pub mod agent;
+pub mod db;
+
+use std::{pin::Pin, sync::Arc};
+
+use testcontainers::{ContainerAsync, GenericImage, TestcontainersError};
+
+use crate::containers::{
+    agent::AgentContainerInfo,
+    db::{ContainerizedDBInfo, PreExistingDBInfo},
+};
+
+pub type UnStartedContainer =
+    Pin<Box<dyn Future<Output = Result<ContainerAsync<GenericImage>, TestcontainersError>> + Send>>;
+
+pub type AgentConfigInfoType = ConfigInfoType<AgentContainerInfo, ()>;
+
+pub type DBConfigInfoType = ConfigInfoType<ContainerizedDBInfo, PreExistingDBInfo>;
+
+pub trait WithContainer {
+    fn container(&self) -> &Arc<ContainerAsync<GenericImage>>;
+}
+
+pub trait WithoutContainer {
+    fn on_delete(&self);
+}
+
+impl WithoutContainer for () {
+    fn on_delete(&self) {}
+}
+
+#[derive(Clone)]
+pub enum ConfigInfoType<T, U>
+where
+    T: WithContainer,
+    U: WithoutContainer,
+{
+    Containerized(T),
+    PreExisting(U),
+}

apps/container/src/containers/agent.rs

@@ -0,0 +1,115 @@
+use std::{error::Error, sync::Arc};
+use testcontainers::{
+    ContainerAsync, GenericBuildableImage, GenericImage, ImageExt,
+    core::{AccessMode, BuildImageOptions, ContainerPort, Mount, WaitFor},
+    runners::{AsyncBuilder, AsyncRunner},
+};
+
+use crate::{WithContainer, containers::UnStartedContainer};
+
+pub const SOCK_NAME: &str = "yanpm-agent.sock";
+const SOCK_FOLDER: &str = "/var/run/yanpm";
+const NGINX_CONFIG_DIR: &str = "/etc/nginx/conf.d";
+
+#[derive(Clone)]
+pub struct AgentContainerConfig {
+    pub image: String,
+    pub tag: String,
+    pub container_name: String,
+    pub dockerfile_path: String,
+    pub force_build: bool,
+    pub agent_config: AgentConfig,
+    pub nginx_config: NginxConfig,
+}
+
+#[derive(Clone)]
+pub struct AgentContainerInfo {
+    pub container: Arc<ContainerAsync<GenericImage>>,
+    pub config: AgentContainerConfig,
+}
+
+impl WithContainer for AgentContainerInfo {
+    fn container(&self) -> &Arc<ContainerAsync<GenericImage>> {
+        &self.container
+    }
+}
+
+#[derive(Clone)]
+pub struct AgentConfig {
+    pub sock_folder: String,      // path to be mounted to host for unix socket
+    pub nginx_config_dir: String, // path to be mounted to host for nginx config files, only the agent generated folder will be mounted
+    pub sock_perm: u32,           // permissions to set on the unix socket
+    pub sock_gid: String,         // GID to set on the unix socket
+}
+
+#[derive(Clone)]
+pub struct NginxConfig {
+    pub expose_http: bool,
+    pub expose_https: bool,
+}
+
+impl AgentContainerConfig {
+    pub fn new(
+        image: String,
+        tag: String,
+        container_name: String,
+        dockerfile_path: String,
+        force_build: bool,
+        // agent configs
+        agent_config: AgentConfig,
+        nginx_config: NginxConfig,
+    ) -> Self {
+        AgentContainerConfig {
+            image,
+            tag,
+            container_name,
+            dockerfile_path,
+            force_build,
+            // default agent configs
+            agent_config,
+            nginx_config,
+        }
+    }
+
+    pub async fn get_unstarted_container(&self) -> Result<UnStartedContainer, Box<dyn Error>> {
+        let mut image = GenericBuildableImage::new(&self.image, &self.tag)
+            .with_dockerfile(&self.dockerfile_path)
+            .build_image_with(BuildImageOptions::new().with_skip_if_exists(!self.force_build))
+            .await?;
+
+        if self.nginx_config.expose_http {
+            image = image.with_exposed_port(ContainerPort::Tcp(80));
+        }
+
+        if self.nginx_config.expose_https {
+            image = image.with_exposed_port(ContainerPort::Tcp(443));
+        }
+
+        image = image.with_wait_for(WaitFor::message_on_either_std("Starting yanpm-daemon on"));
+
+        Ok(image
+            .with_container_name(self.container_name.clone())
+            .with_env_var("YANPM_AGENT_SOCK", format!("{}/{}", SOCK_FOLDER, SOCK_NAME))
+            .with_env_var("YANPM_NGINX_CONFIG_DIR", NGINX_CONFIG_DIR.to_string())
+            .with_env_var(
+                "YANPM_AGENT_SOCK_PERM",
+                self.agent_config.sock_perm.to_string(),
+            )
+            .with_env_var("YANPM_AGENT_SOCK_GID", self.agent_config.sock_gid.clone())
+            .with_mount(
+                Mount::bind_mount(
+                    self.agent_config.sock_folder.clone(),
+                    SOCK_FOLDER.to_string(),
+                )
+                .with_access_mode(AccessMode::ReadWrite),
+            )
+            .with_mount(
+                Mount::bind_mount(
+                    self.agent_config.nginx_config_dir.clone(),
+                    NGINX_CONFIG_DIR.to_string(),
+                )
+                .with_access_mode(AccessMode::ReadWrite),
+            )
+            .start())
+    }
+}

apps/container/src/containers/db.rs

@@ -5,18 +5,15 @@ pub mod sqlite;
 use async_trait::async_trait;
 use shared::db_type::DBType;
 use std::error::Error;
-use std::future::Future;
+use std::sync::Arc;
-use std::{pin::Pin, sync::Arc};
 use url::Host;
 
-use testcontainers::{ContainerAsync, GenericImage, TestcontainersError};
+use testcontainers::{ContainerAsync, GenericImage};
 
-use crate::{ConfigInfoType, WithContainer, WithoutContainer};
+use crate::{
-
+    WithContainer, WithoutContainer,
-pub type UnStartedContainer =
+    containers::{DBConfigInfoType, UnStartedContainer},
-    Pin<Box<dyn Future<Output = Result<ContainerAsync<GenericImage>, TestcontainersError>> + Send>>;
+};
-
-pub type DBConfigInfoType = ConfigInfoType<ContainerizedDBInfo, PreExistingDBInfo>;
 
 #[derive(Clone)]
 pub struct PreExistingDBInfo {

apps/container/src/containers/db/config.rs

@@ -9,7 +9,7 @@ pub struct OptionalContainerConfig {
 }
 
 #[derive(Clone)]
-pub struct ContainerConfig {
+pub struct DatabaseContainerConfig {
     pub image: String,
     pub tag: String,
     pub container_name: String,
@@ -19,8 +19,8 @@ pub struct ContainerConfig {
 }
 
 impl OptionalContainerConfig {
-    pub fn fill_with(&self, other: &ContainerConfig) -> ContainerConfig {
+    pub fn fill_with(&self, other: &DatabaseContainerConfig) -> DatabaseContainerConfig {
-        ContainerConfig {
+        DatabaseContainerConfig {
             image: self.image.clone().unwrap_or_else(|| other.image.clone()),
             tag: self.tag.clone().unwrap_or_else(|| other.tag.clone()),
             container_name: self

apps/container/src/containers/db/postgresql.rs

@@ -9,14 +9,17 @@ use testcontainers::{
 
 use crate::{
     ConfigInfoType,
+    containers::{
+        UnStartedContainer,
         db::{
-        ContainerizedDBInfo, DBConfigInfoType, DBInfo, UnStartedContainer,
+            ContainerizedDBInfo, DBConfigInfoType, DBInfo,
-        config::{ContainerConfig, OptionalContainerConfig},
+            config::{DatabaseContainerConfig, OptionalContainerConfig},
+        },
     },
 };
 
-pub fn get_default_config() -> ContainerConfig {
+pub fn get_default_config() -> DatabaseContainerConfig {
-    ContainerConfig {
+    DatabaseContainerConfig {
         container_name: "yanpm-postgres".to_string(),
         database_name: "postgres".to_string(),
         user: "postgres".to_string(),
@@ -27,7 +30,7 @@ pub fn get_default_config() -> ContainerConfig {
 }
 
 pub struct PostgreSQLContainer {
-    pub config: ContainerConfig,
+    pub config: DatabaseContainerConfig,
 }
 
 #[async_trait]
@@ -53,7 +56,7 @@ impl DBInfo<OptionalContainerConfig> for PostgreSQLContainer {
         );
 
         ConfigInfoType::Containerized(ContainerizedDBInfo {
-            db_type: crate::db::DBType::PostgreSQL,
+            db_type: crate::containers::db::DBType::PostgreSQL,
             container: Arc::new(pg_container),
             container_name: self.config.container_name.clone(),
             database_name: self.config.database_name.clone(),

apps/container/src/containers/db/sqlite.rs

@@ -4,7 +4,7 @@ use async_trait::async_trait;
 
 use crate::{
     ConfigInfoType,
-    db::{DBConfigInfoType, DBInfo, PreExistingDBInfo, UnStartedContainer},
+    containers::db::{DBConfigInfoType, DBInfo, PreExistingDBInfo, UnStartedContainer},
     util::to_absolute_path,
 };
 
@@ -69,7 +69,7 @@ impl DBInfo<OptionalContainerConfig> for SQLiteContainer {
             .expect("Failed to create SQLite database file");
         //
         ConfigInfoType::PreExisting(PreExistingDBInfo {
-            db_type: crate::db::DBType::SQLite,
+            db_type: crate::containers::db::DBType::SQLite,
             url: sqlite_url,
             on_delete: {
                 let db_path = self.get_db_absolute_path();

apps/container/src/env.rs

@@ -1,7 +1,5 @@
 use std::io::Write;
 
-use shared::db_type::DBType;
-
 #[derive(Clone, Copy)]
 pub enum EnvFileType {
     DotEnv,
@@ -11,25 +9,20 @@ pub enum EnvFileType {
 #[derive(Clone)]
 pub struct EnvFile {
     pub file_type: EnvFileType,
-    pub db_type: DBType,
-    pub db_url: String,
     //
     buffer: serde_json::Value,
 }
 
 impl EnvFile {
-    pub fn new(file_type: EnvFileType, db_type: DBType, db_url: String) -> Self {
+    pub fn new(file_type: EnvFileType) -> Self {
-        let mut env_file = EnvFile {
+        EnvFile {
             file_type,
-            db_type,
-            db_url,
             buffer: serde_json::Value::Object(serde_json::Map::new()),
-        };
+        }
+    }
 
-        env_file._write_line_buffer("DATABASE__TYPE", &env_file.db_type.to_string());
+    pub fn write_line(&mut self, key: &str, value: &str) {
-        env_file._write_line_buffer("DATABASE__URL", &env_file.db_url.to_string());
+        self._write_line_buffer(key, value);
-
-        env_file
     }
 
     pub fn write(&mut self, stream: &mut dyn Write, with_prefix: bool) {
@@ -127,12 +120,10 @@ mod tests {
 
     #[test]
     fn test_env_file_write_yaml() {
-        let mut env_file_nested = EnvFile::new(
+        let mut env_file_nested = EnvFile::new(EnvFileType::Yaml);
-            EnvFileType::Yaml,
-            DBType::SQLite,
-            "mysql://user:pass@localhost/db".to_string(),
-        );
 
+        env_file_nested.write_line("DATABASE__TYPE", "SQLite");
+        env_file_nested.write_line("DATABASE__URL", "mysql://user:pass@localhost/db");
         let mut output_stream = Vec::new();
         env_file_nested.write(&mut output_stream, false);
         let output_string = String::from_utf8(output_stream).unwrap();
@@ -146,11 +137,9 @@ DATABASE:
 
     #[test]
     fn test_env_file_write_env() {
-        let mut env_file_nested = EnvFile::new(
+        let mut env_file_nested = EnvFile::new(EnvFileType::DotEnv);
-            EnvFileType::DotEnv,
+        env_file_nested.write_line("DATABASE__TYPE", "PostgreSQL");
-            DBType::PostgreSQL,
+        env_file_nested.write_line("DATABASE__URL", "postgres://user:pass@localhost/db");
-            "postgres://user:pass@localhost/db".to_string(),
-        );
         let mut output_stream = Vec::new();
         env_file_nested.write(&mut output_stream, true);
         let output_string = String::from_utf8(output_stream).unwrap();

apps/container/src/lib.rs

@@ -1,11 +1,11 @@
-pub mod db;
+pub mod containers;
 mod env;
-pub mod types;
 mod util;
 
 use crate::{
-    db::DBConfigInfoType,
+    containers::{
-    types::{ConfigInfoType, WithContainer, WithoutContainer},
+        AgentConfigInfoType, ConfigInfoType, DBConfigInfoType, WithContainer, WithoutContainer,
+    },
     util::{
         await_termination_signal, remove_file_if_exists, stop_container, to_absolute_path,
         write_env_files,
@@ -15,6 +15,7 @@ use crate::{
 #[derive(Clone)]
 pub struct Config {
     pub database: DBConfigInfoType,
+    pub agent: Option<AgentConfigInfoType>,
 }
 
 // relative to the pwd
@@ -56,26 +57,29 @@ impl<'a> Drop for DetachedHandle<'a> {
 }
 
 async fn start(config: &Config) {
-    let db_config = &config.database;
-    //
     // write the config files for the api server and database client
     println!("Writing config files...");
-    write_env_files(db_config);
+    write_env_files(&config.database, &config.agent);
     println!("Config files written to:");
     println!("  - {}", to_absolute_path(API_CONFIG_PATH).display());
     println!("  - {}", to_absolute_path(DB_CONFIG_PATH).display());
 }
 
 async fn stop(config: &Config) {
-    let db_config = &config.database;
     // stop the container
     println!("Stopping container...");
-    stop_container(db_config, "database".to_string()).await;
+    println!("Stopping database container...");
+    stop_container(&config.database, "database".to_string()).await;
+    if let Some(agent) = &config.agent {
+        println!("Stopping agent container...");
+        stop_container(agent, "agent".to_string()).await;
+    }
+    println!("Container stopped.");
     // remove the generated config file
     println!("Removing generated config file...");
     remove_file_if_exists(DB_CONFIG_PATH);
     remove_file_if_exists(API_CONFIG_PATH);
-    println!("Container stopped.");
+    println!("Generated config files removed.");
 }
 
 pub async fn start_attached(config: &Config) {

apps/container/src/main.rs

@@ -1,8 +1,15 @@
-use clap::Parser;
+use std::sync::Arc;
-use container::Config;
-use container::start_attached;
 
-use container::db::DBInfo;
+use clap::Parser;
+use container::{
+    Config,
+    containers::{
+        ConfigInfoType,
+        agent::{AgentConfig, AgentContainerConfig, AgentContainerInfo, NginxConfig},
+        db::DBInfo,
+    },
+    start_attached,
+};
 
 /// Command line arguments
 #[derive(Parser, Debug)]
@@ -11,17 +18,63 @@ struct Args {
     /// Database type to use: 'postgres' or 'sqlite'. Can also be set with DB_TYPE env var.
     #[arg(long, default_value = "sqlite", env = "DB_TYPE")]
     db_type: String,
+
+    // agent related
+    /// agent image name
+    #[arg(long, default_value = "yanpm/agent", env = "AGENT_IMAGE_NAME")]
+    agent_image: String,
+    /// agent image tag
+    #[arg(long, default_value = "latest", env = "AGENT_IMAGE_TAG")]
+    agent_image_tag: String,
+    /// force build agent image
+    #[arg(long, default_value_t = false, env = "AGENT_FORCE_BUILD")]
+    agent_force_build: bool,
+    /// dockerfile path for building agent image
+    #[arg(long, env = "AGENT_DOCKERFILE_PATH", required = false)]
+    agent_dockerfile_path: Option<String>,
+    /// host's location to mount nginx config files folder generated by the agent
+    #[arg(long, env = "AGENT_NGINX_CONFIG_DIR", required = false)]
+    agent_nginx_config_dir: Option<String>,
+    /// host's location folder to mount the unix socket files
+    #[arg(long, env = "AGENT_SOCK_PATH", required = false)]
+    agent_sock_path: Option<String>,
+    /// socket permissions to set on the unix socket
+    #[arg(long, default_value = "660", env = "AGENT_SOCK_PERM", required = false)]
+    agent_sock_perm: u32,
+    /// socket GID to set on the unix socket
+    #[arg(long, default_value = "", env = "AGENT_SOCK_GID", required = false)]
+    agent_sock_gid: String,
+    /// nginx expose http port
+    #[arg(
+        long,
+        default_value_t = true,
+        env = "AGENT_NGINX_EXPOSE_HTTP",
+        required = false
+    )]
+    agent_nginx_expose_http: bool,
+    /// nginx expose https port
+    #[arg(
+        long,
+        default_value_t = false,
+        env = "AGENT_NGINX_EXPOSE_HTTPS",
+        required = false
+    )]
+    agent_nginx_expose_https: bool,
+}
+
+struct ParsedArgs {
+    db_type: String,
+    agent_container_config: Option<AgentContainerConfig>,
 }
 
 #[tokio::main]
 async fn main() {
-    // Parse command line arguments and environment variables
+    let args = parse_args().await;
-    let args = Args::parse();
 
     println!("Starting container with database type: {}", args.db_type);
     let db_config = match args.db_type.to_lowercase().as_str() {
         "postgres" | "pg" | "pgsql" => {
-            use container::db::postgresql::PostgreSQLContainer;
+            use container::containers::db::postgresql::PostgreSQLContainer;
             println!("Using PostgreSQL database");
             PostgreSQLContainer::new(None)
                 .await
@@ -30,7 +83,7 @@ async fn main() {
         }
         "sqlite" | "sql" => {
             println!("Using SQLite database");
-            use container::db::sqlite::SQLiteContainer;
+            use container::containers::db::sqlite::SQLiteContainer;
             SQLiteContainer::new(None)
                 .await
                 .get_db_container_config_info()
@@ -43,11 +96,98 @@ async fn main() {
     };
     println!("Database configuration obtained.");
 
+    let agent_container = if let Some(agent_config) = &args.agent_container_config {
+        println!(
+            "Agent container will be used with socket folder: {} and nginx config dir: {}",
+            agent_config.agent_config.sock_folder, agent_config.agent_config.nginx_config_dir
+        );
+        Some(agent_config.get_unstarted_container().await)
+    } else {
+        println!("No agent container configuration provided, skipping agent setup.");
+        None
+    };
+
     let config = Config {
         database: db_config,
+        agent: match agent_container {
+            Some(Ok(container)) => Some(ConfigInfoType::Containerized(AgentContainerInfo {
+                container: Arc::new(container.await.expect("Failed to start agent container")),
+                config: args.agent_container_config.expect("Invalid config state"),
+            })),
+            Some(Err(e)) => {
+                eprintln!("Failed to set up agent container: {}", e);
+                std::process::exit(1);
+            }
+            None => None,
+        },
     };
 
     println!("Starting container...");
     start_attached(&config).await;
     println!("Container stopped. Exiting...");
 }
+
+async fn parse_args() -> ParsedArgs {
+    // Parse command line arguments and environment variables
+    let args = Args::parse();
+
+    // if any required args are missing, do not start agent
+    let dockerfile_path = match args.agent_dockerfile_path {
+        None => {
+            println!("Agent dockerfile path not provided, skipping agent setup.");
+            return ParsedArgs {
+                db_type: args.db_type,
+                agent_container_config: None,
+            };
+        }
+        Some(path) => path,
+    };
+
+    let time = std::time::SystemTime::now()
+        .duration_since(std::time::UNIX_EPOCH)
+        .unwrap()
+        .as_secs();
+
+    let agent_config = AgentConfig {
+        sock_folder: match args.agent_sock_path {
+            None => {
+                // create a temp dir for the socket path
+                let temp_dir = std::env::temp_dir().join(format!("yanpm-agent-sock-{}", time));
+                std::fs::create_dir_all(&temp_dir)
+                    .expect("Failed to create temp dir for agent socket");
+                temp_dir.to_string_lossy().to_string()
+            }
+            Some(path) => path,
+        },
+        nginx_config_dir: match args.agent_nginx_config_dir {
+            None => {
+                // create a temp dir for the nginx config dir
+                let temp_dir =
+                    std::env::temp_dir().join(format!("yanpm-agent-nginx-configs-{}", time));
+                std::fs::create_dir_all(&temp_dir)
+                    .expect("Failed to create temp dir for agent nginx configs");
+                temp_dir.to_string_lossy().to_string()
+            }
+            Some(path) => path,
+        },
+        sock_perm: args.agent_sock_perm,
+        sock_gid: args.agent_sock_gid.clone(),
+    };
+
+    ParsedArgs {
+        db_type: args.db_type,
+        agent_container_config: Some(AgentContainerConfig {
+            // TODO: allow customization of these fields via CLI args
+            image: args.agent_image,
+            tag: args.agent_image_tag,
+            container_name: format!("yanpm-agent-container-{}", time),
+            dockerfile_path,
+            force_build: args.agent_force_build,
+            agent_config,
+            nginx_config: NginxConfig {
+                expose_http: args.agent_nginx_expose_http,
+                expose_https: args.agent_nginx_expose_https,
+            },
+        }),
+    }
+}

apps/container/src/types.rs

@@ -1,21 +0,0 @@
-use std::sync::Arc;
-
-use testcontainers::{ContainerAsync, GenericImage};
-
-pub trait WithContainer {
-    fn container(&self) -> &Arc<ContainerAsync<GenericImage>>;
-}
-
-pub trait WithoutContainer {
-    fn on_delete(&self);
-}
-
-#[derive(Clone)]
-pub enum ConfigInfoType<T, U>
-where
-    T: WithContainer,
-    U: WithoutContainer,
-{
-    Containerized(T),
-    PreExisting(U),
-}

apps/container/src/util.rs

@@ -4,9 +4,11 @@ use tokio::signal::unix::{SignalKind, signal};
 
 use crate::{
     API_CONFIG_PATH, DB_CONFIG_PATH,
-    db::DBConfigInfoType,
+    containers::{
+        AgentConfigInfoType, ConfigInfoType, DBConfigInfoType, WithContainer, WithoutContainer,
+        agent::SOCK_NAME,
+    },
     env::{self, EnvFile},
-    types::{ConfigInfoType, WithContainer, WithoutContainer},
 };
 
 // relative to the current working directory
@@ -20,7 +22,7 @@ pub fn to_absolute_path(path: &str) -> PathBuf {
         .clean()
 }
 
-pub fn write_env_files(db_config: &DBConfigInfoType) {
+pub fn write_env_files(db_config: &DBConfigInfoType, agent_config: &Option<AgentConfigInfoType>) {
     let api_config_path_absolute = to_absolute_path(API_CONFIG_PATH);
     let db_config_path_absolute = to_absolute_path(DB_CONFIG_PATH);
 
@@ -29,10 +31,27 @@ pub fn write_env_files(db_config: &DBConfigInfoType) {
         DBConfigInfoType::PreExisting(config) => (config.db_type.clone(), config.url.clone()),
     };
 
-    let mut api_env = EnvFile::new(env::EnvFileType::Yaml, db_type, db_url);
+    let mut api_env = EnvFile::new(env::EnvFileType::Yaml);
+    api_env.write_line("DATABASE__TYPE", db_type.to_string().as_str());
+    api_env.write_line("DATABASE__URL", db_url.as_str());
+
     let mut db_env = api_env.clone();
     db_env.file_type = env::EnvFileType::DotEnv;
 
+    // agent related env vars
+    if let Some(agent) = agent_config
+        && let ConfigInfoType::Containerized(agent) = agent
+    {
+        api_env.write_line(
+            "AGENT__SOCK__PATH",
+            format!("{}/{}", &agent.config.agent_config.sock_folder, SOCK_NAME).as_str(),
+        );
+        api_env.write_line(
+            "AGENT__NGINX__CONFIG__DIR",
+            &agent.config.agent_config.nginx_config_dir,
+        );
+    }
+
     let mut api_file =
         std::fs::File::create(&api_config_path_absolute).expect("Failed to create API config file");
 

justfile

@@ -2,6 +2,8 @@ set dotenv-load := true
 # development environment file
 set dotenv-filename := "./public/database/.env.generated"
 
+DEFAULT_SIMULATE_ARGS := "--agent-dockerfile-path=../agent/Dockerfile"
+
 cli *args:
   cd apps/cli && \
   if [ -n "{{args}}" ]; then \
@@ -13,9 +15,9 @@ cli *args:
 simulate *args:
   cd apps/container && \
   if [ -n "{{args}}" ]; then \
-    cargo run --bin container-simulate -- --db-type={{args}}; \
+    cargo run --bin container-simulate -- {{args}}; \
   else \
-    cargo run --bin container-simulate; \
+    cargo run --bin container-simulate -- {{DEFAULT_SIMULATE_ARGS}}; \
   fi
 
 # Usage: (following SeaORM migration commands)
@@ -48,8 +50,31 @@ generate-openapi:
   # Generate API client for frontend
   cd apps/frontend && \
   pnpm generate:openapi
+  # Generate API client for agent
+  cd apps/agent && \
+  cargo run -- generate-openapi --output swagger.json
 
-generate-all: generate-entity generate-openapi
+generate-agent-client:
+  # Generate API client for agent
+  pnpm openapi-generator-cli generate \
+  -g rust --skip-validate-spec \
+  -o ./public/agent-client -i ./apps/agent/swagger.json \
+  --additional-properties=library=reqwest-trait \
+  --additional-properties=mockall=true \
+  --additional-properties=packageName=agent_client \
+  --additional-properties=packageVersion=0.1.0 \
+  --additional-properties=supportAsync=true \
+  --additional-properties=supportMultipleResponses=true \
+  --additional-properties=topLevelApiClient=true \
+  --additional-properties=useSingleRequestParameter=true
+  # format generated code
+  cd public/agent-client && \
+  cargo fmt
+  # append lint allows/forbids to the end of Cargo.toml to disable warnings in generated code and forbid unsafe code
+  cd public/agent-client && \
+  echo '\n[lints.clippy]\nall = "allow"\n[lints.rust]\nunsafe_code = "forbid"\n' >> Cargo.toml
+
+generate-all: generate-entity generate-openapi generate-agent-client
 
 build-frontend:
   # build frontend assets
@@ -61,6 +86,10 @@ build-backend:
   cd apps/api && \
   cargo build --release
 
+build-docker:
+  cd apps/agent && \
+  docker build -t yanpm/agent:latest .
+
 build-apps: build-frontend build-backend
 
 act *args:

openapitools.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "./node_modules/@openapitools/openapi-generator-cli/config.schema.json",
+  "spaces": 2,
+  "generator-cli": {
+    "version": "7.18.0"
+  }
+}

package.json

@@ -0,0 +1,6 @@
+{
+	"devDependencies": {
+		"@openapitools/openapi-generator-cli": "^2.26.0",
+		"rust-just": "^1.44.0"
+	}
+}

pnpm-workspace.yaml

@@ -0,0 +1,7 @@
+packages:
+  - apps/frontend
+
+onlyBuiltDependencies:
+  - '@nestjs/core'
+  - '@openapitools/openapi-generator-cli'
+  - esbuild

public/agent-client/.gitignore

@@ -0,0 +1,3 @@
+/target/
+**/*.rs.bk
+Cargo.lock

public/agent-client/.openapi-generator-ignore

@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md

public/agent-client/.openapi-generator/FILES

@@ -0,0 +1,21 @@
+.gitignore
+.travis.yml
+Cargo.toml
+README.md
+docs/NginxAgentApi.md
+docs/StatusResp.md
+docs/ValidateAndReloadBody.md
+docs/ValidateAndReloadResp.md
+docs/ValidateBody.md
+docs/WriteConfigBody.md
+git_push.sh
+src/apis/configuration.rs
+src/apis/mod.rs
+src/apis/nginx_agent_api.rs
+src/lib.rs
+src/models/mod.rs
+src/models/status_resp.rs
+src/models/validate_and_reload_body.rs
+src/models/validate_and_reload_resp.rs
+src/models/validate_body.rs
+src/models/write_config_body.rs

public/agent-client/.openapi-generator/VERSION

@@ -0,0 +1 @@
+7.18.0

public/agent-client/.travis.yml

@@ -0,0 +1 @@
+language: rust

public/agent-client/Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "agent_client"
+version = "0.1.0"
+authors = ["OpenAPI Generator team and contributors"]
+description = "No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)"
+license = ""
+edition = "2021"
+
+[dependencies]
+serde = { version = "^1.0", features = ["derive"] }
+serde_json = "^1.0"
+serde_repr = "^0.1"
+url = "^2.5"
+async-trait = "^0.1"
+reqwest = { version = "^0.12", default-features = false, features = ["json", "multipart", "stream"] }
+mockall = { version = "^0.13", optional = true}
+[features]
+default = ["native-tls"]
+native-tls = ["reqwest/native-tls"]
+rustls-tls = ["reqwest/rustls-tls"]
+mockall = ["dep:mockall"]
+
+[lints.clippy]
+all = "allow"
+[lints.rust]
+unsafe_code = "forbid"
+

public/agent-client/README.md

@@ -0,0 +1,53 @@
+# Rust API client for agent_client
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+
+## Overview
+
+This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.  By using the [openapi-spec](https://openapis.org) from a remote server, you can easily generate an API client.
+
+- API version: 0.1.0
+- Package version: 0.1.0
+- Generator version: 7.18.0
+- Build package: `org.openapitools.codegen.languages.RustClientCodegen`
+
+## Installation
+
+Put the package under your project folder in a directory named `agent_client` and add the following to `Cargo.toml` under `[dependencies]`:
+
+```
+agent_client = { path = "./agent_client" }
+```
+
+## Documentation for API Endpoints
+
+All URIs are relative to *http://localhost*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*NginxAgentApi* | [**status**](docs/NginxAgentApi.md#status) | **GET** /status | Health check endpoint
+*NginxAgentApi* | [**validate**](docs/NginxAgentApi.md#validate) | **POST** /validate | 
+*NginxAgentApi* | [**validate_and_reload**](docs/NginxAgentApi.md#validate_and_reload) | **POST** /validate_and_reload | 
+*NginxAgentApi* | [**write_config**](docs/NginxAgentApi.md#write_config) | **POST** /write_config | 
+
+
+## Documentation For Models
+
+ - [StatusResp](docs/StatusResp.md)
+ - [ValidateAndReloadBody](docs/ValidateAndReloadBody.md)
+ - [ValidateAndReloadResp](docs/ValidateAndReloadResp.md)
+ - [ValidateBody](docs/ValidateBody.md)
+ - [WriteConfigBody](docs/WriteConfigBody.md)
+
+
+To get access to the crate's generated documentation, use:
+
+```
+cargo doc --open
+```
+
+## Author
+
+
+

public/agent-client/docs/NginxAgentApi.md

@@ -0,0 +1,121 @@
+# \NginxAgentApi
+
+All URIs are relative to *http://localhost*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**status**](NginxAgentApi.md#status) | **GET** /status | Health check endpoint
+[**validate**](NginxAgentApi.md#validate) | **POST** /validate | 
+[**validate_and_reload**](NginxAgentApi.md#validate_and_reload) | **POST** /validate_and_reload | 
+[**write_config**](NginxAgentApi.md#write_config) | **POST** /write_config | 
+
+
+
+## status
+
+> models::StatusResp status()
+Health check endpoint
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**models::StatusResp**](StatusResp.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+
+## validate
+
+> serde_json::Value validate(validate_body)
+
+
+### Parameters
+
+
+Name | Type | Description  | Required | Notes
+------------- | ------------- | ------------- | ------------- | -------------
+**validate_body** | [**ValidateBody**](ValidateBody.md) |  | [required] |
+
+### Return type
+
+[**serde_json::Value**](serde_json::Value.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+
+## validate_and_reload
+
+> models::ValidateAndReloadResp validate_and_reload(validate_and_reload_body)
+
+
+### Parameters
+
+
+Name | Type | Description  | Required | Notes
+------------- | ------------- | ------------- | ------------- | -------------
+**validate_and_reload_body** | [**ValidateAndReloadBody**](ValidateAndReloadBody.md) |  | [required] |
+
+### Return type
+
+[**models::ValidateAndReloadResp**](ValidateAndReloadResp.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+
+## write_config
+
+> write_config(write_config_body)
+
+
+### Parameters
+
+
+Name | Type | Description  | Required | Notes
+------------- | ------------- | ------------- | ------------- | -------------
+**write_config_body** | [**WriteConfigBody**](WriteConfigBody.md) |  | [required] |
+
+### Return type
+
+ (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+

public/agent-client/docs/StatusResp.md

@@ -0,0 +1,11 @@
+# StatusResp
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**ok** | **bool** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

public/agent-client/docs/TagNginxtagApi.md

@@ -0,0 +1,121 @@
+# \TagNginxtagApi
+
+All URIs are relative to *http://localhost*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**status**](TagNginxtagApi.md#status) | **GET** /status | Health check endpoint
+[**validate**](TagNginxtagApi.md#validate) | **POST** /validate | 
+[**validate_and_reload**](TagNginxtagApi.md#validate_and_reload) | **POST** /validate_and_reload | 
+[**write_config**](TagNginxtagApi.md#write_config) | **POST** /write_config | 
+
+
+
+## status
+
+> models::StatusResp status()
+Health check endpoint
+
+### Parameters
+
+This endpoint does not need any parameter.
+
+### Return type
+
+[**models::StatusResp**](StatusResp.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+
+## validate
+
+> serde_json::Value validate(validate_body)
+
+
+### Parameters
+
+
+Name | Type | Description  | Required | Notes
+------------- | ------------- | ------------- | ------------- | -------------
+**validate_body** | [**ValidateBody**](ValidateBody.md) |  | [required] |
+
+### Return type
+
+[**serde_json::Value**](serde_json::Value.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+
+## validate_and_reload
+
+> models::ValidateAndReloadResp validate_and_reload(validate_and_reload_body)
+
+
+### Parameters
+
+
+Name | Type | Description  | Required | Notes
+------------- | ------------- | ------------- | ------------- | -------------
+**validate_and_reload_body** | [**ValidateAndReloadBody**](ValidateAndReloadBody.md) |  | [required] |
+
+### Return type
+
+[**models::ValidateAndReloadResp**](ValidateAndReloadResp.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+
+## write_config
+
+> write_config(write_config_body)
+
+
+### Parameters
+
+
+Name | Type | Description  | Required | Notes
+------------- | ------------- | ------------- | ------------- | -------------
+**write_config_body** | [**WriteConfigBody**](WriteConfigBody.md) |  | [required] |
+
+### Return type
+
+ (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+

public/agent-client/docs/ValidateAndReloadBody.md

@@ -0,0 +1,12 @@
+# ValidateAndReloadBody
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**config_name** | **String** |  | 
+**timestamp** | **i64** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

public/agent-client/docs/ValidateAndReloadResp.md

@@ -0,0 +1,12 @@
+# ValidateAndReloadResp
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**rc** | **i32** |  | 
+**ro** | **String** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

public/agent-client/docs/ValidateBody.md

@@ -0,0 +1,12 @@
+# ValidateBody
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**config_name** | **String** |  | 
+**timestamp** | **i64** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

public/agent-client/docs/WriteConfigBody.md

@@ -0,0 +1,13 @@
+# WriteConfigBody
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**config_name** | **String** |  | 
+**content** | **String** |  | 
+**timestamp** | **i64** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

public/agent-client/git_push.sh

@@ -0,0 +1,57 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-petstore-perl "minor update" "gitlab.com"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+git_host=$4
+
+if [ "$git_host" = "" ]; then
+    git_host="github.com"
+    echo "[INFO] No command line input provided. Set \$git_host to $git_host"
+fi
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="GIT_USER_ID"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="GIT_REPO_ID"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="Minor update"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository.
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=$(git remote)
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
+        git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:"${GIT_TOKEN}"@${git_host}/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'

public/agent-client/src/apis/configuration.rs

@@ -0,0 +1,48 @@
+/*
+ * yanpm-agent
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ * Generated by: https://openapi-generator.tech
+ */
+
+#[derive(Debug, Clone)]
+pub struct Configuration {
+    pub base_path: String,
+    pub user_agent: Option<String>,
+    pub client: reqwest::Client,
+    pub basic_auth: Option<BasicAuth>,
+    pub oauth_access_token: Option<String>,
+    pub bearer_access_token: Option<String>,
+    pub api_key: Option<ApiKey>,
+}
+
+pub type BasicAuth = (String, Option<String>);
+
+#[derive(Debug, Clone)]
+pub struct ApiKey {
+    pub prefix: Option<String>,
+    pub key: String,
+}
+
+impl Configuration {
+    pub fn new() -> Configuration {
+        Configuration::default()
+    }
+}
+
+impl Default for Configuration {
+    fn default() -> Self {
+        Configuration {
+            base_path: "http://localhost".to_owned(),
+            user_agent: Some("OpenAPI-Generator/0.1.0/rust".to_owned()),
+            client: reqwest::Client::new(),
+            basic_auth: None,
+            oauth_access_token: None,
+            bearer_access_token: None,
+            api_key: None,
+        }
+    }
+}

public/agent-client/src/apis/mod.rs

@@ -0,0 +1,165 @@
+use std::error;
+use std::fmt;
+
+#[derive(Debug, Clone)]
+pub struct ResponseContent<T> {
+    pub status: reqwest::StatusCode,
+    pub content: String,
+    pub entity: Option<T>,
+}
+
+#[derive(Debug)]
+pub enum Error<T> {
+    Reqwest(reqwest::Error),
+    Serde(serde_json::Error),
+    Io(std::io::Error),
+    ResponseError(ResponseContent<T>),
+}
+
+impl<T> fmt::Display for Error<T> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let (module, e) = match self {
+            Error::Reqwest(e) => ("reqwest", e.to_string()),
+            Error::Serde(e) => ("serde", e.to_string()),
+            Error::Io(e) => ("IO", e.to_string()),
+            Error::ResponseError(e) => ("response", format!("status code {}", e.status)),
+        };
+        write!(f, "error in {}: {}", module, e)
+    }
+}
+
+impl<T: fmt::Debug> error::Error for Error<T> {
+    fn source(&self) -> Option<&(dyn error::Error + 'static)> {
+        Some(match self {
+            Error::Reqwest(e) => e,
+            Error::Serde(e) => e,
+            Error::Io(e) => e,
+            Error::ResponseError(_) => return None,
+        })
+    }
+}
+
+impl<T> From<reqwest::Error> for Error<T> {
+    fn from(e: reqwest::Error) -> Self {
+        Error::Reqwest(e)
+    }
+}
+
+impl<T> From<serde_json::Error> for Error<T> {
+    fn from(e: serde_json::Error) -> Self {
+        Error::Serde(e)
+    }
+}
+
+impl<T> From<std::io::Error> for Error<T> {
+    fn from(e: std::io::Error) -> Self {
+        Error::Io(e)
+    }
+}
+
+pub fn urlencode<T: AsRef<str>>(s: T) -> String {
+    ::url::form_urlencoded::byte_serialize(s.as_ref().as_bytes()).collect()
+}
+
+pub fn parse_deep_object(prefix: &str, value: &serde_json::Value) -> Vec<(String, String)> {
+    if let serde_json::Value::Object(object) = value {
+        let mut params = vec![];
+
+        for (key, value) in object {
+            match value {
+                serde_json::Value::Object(_) => params.append(&mut parse_deep_object(
+                    &format!("{}[{}]", prefix, key),
+                    value,
+                )),
+                serde_json::Value::Array(array) => {
+                    for (i, value) in array.iter().enumerate() {
+                        params.append(&mut parse_deep_object(
+                            &format!("{}[{}][{}]", prefix, key, i),
+                            value,
+                        ));
+                    }
+                }
+                serde_json::Value::String(s) => {
+                    params.push((format!("{}[{}]", prefix, key), s.clone()))
+                }
+                _ => params.push((format!("{}[{}]", prefix, key), value.to_string())),
+            }
+        }
+
+        return params;
+    }
+
+    unimplemented!("Only objects are supported with style=deepObject")
+}
+
+/// Internal use only
+/// A content type supported by this client.
+#[allow(dead_code)]
+enum ContentType {
+    Json,
+    Text,
+    Unsupported(String),
+}
+
+impl From<&str> for ContentType {
+    fn from(content_type: &str) -> Self {
+        if content_type.starts_with("application") && content_type.contains("json") {
+            return Self::Json;
+        } else if content_type.starts_with("text/plain") {
+            return Self::Text;
+        } else {
+            return Self::Unsupported(content_type.to_string());
+        }
+    }
+}
+
+pub mod nginx_agent_api;
+
+pub mod configuration;
+
+use std::sync::Arc;
+
+pub trait Api {
+    fn nginx_agent_api(&self) -> &dyn nginx_agent_api::NginxAgentApi;
+}
+
+pub struct ApiClient {
+    nginx_agent_api: Box<dyn nginx_agent_api::NginxAgentApi>,
+}
+
+impl ApiClient {
+    pub fn new(configuration: Arc<configuration::Configuration>) -> Self {
+        Self {
+            nginx_agent_api: Box::new(nginx_agent_api::NginxAgentApiClient::new(
+                configuration.clone(),
+            )),
+        }
+    }
+}
+
+impl Api for ApiClient {
+    fn nginx_agent_api(&self) -> &dyn nginx_agent_api::NginxAgentApi {
+        self.nginx_agent_api.as_ref()
+    }
+}
+
+#[cfg(feature = "mockall")]
+pub struct MockApiClient {
+    pub nginx_agent_api_mock: nginx_agent_api::MockNginxAgentApi,
+}
+
+#[cfg(feature = "mockall")]
+impl MockApiClient {
+    pub fn new() -> Self {
+        Self {
+            nginx_agent_api_mock: nginx_agent_api::MockNginxAgentApi::new(),
+        }
+    }
+}
+
+#[cfg(feature = "mockall")]
+impl Api for MockApiClient {
+    fn nginx_agent_api(&self) -> &dyn nginx_agent_api::NginxAgentApi {
+        &self.nginx_agent_api_mock
+    }
+}

public/agent-client/src/apis/nginx_agent_api.rs

@@ -0,0 +1,329 @@
+/*
+ * yanpm-agent
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ * Generated by: https://openapi-generator.tech
+ */
+
+use super::{configuration, Error};
+use crate::apis::ContentType;
+use crate::{apis::ResponseContent, models};
+use async_trait::async_trait;
+#[cfg(feature = "mockall")]
+use mockall::automock;
+use reqwest;
+use serde::{de::Error as _, Deserialize, Serialize};
+use std::sync::Arc;
+
+#[cfg_attr(feature = "mockall", automock)]
+#[async_trait]
+pub trait NginxAgentApi: Send + Sync {
+    /// GET /status
+    ///
+    ///
+    async fn status(&self) -> Result<ResponseContent<StatusSuccess>, Error<StatusError>>;
+
+    /// POST /validate
+    ///
+    ///
+    async fn validate(
+        &self,
+        params: ValidateParams,
+    ) -> Result<ResponseContent<ValidateSuccess>, Error<ValidateError>>;
+
+    /// POST /validate_and_reload
+    ///
+    ///
+    async fn validate_and_reload(
+        &self,
+        params: ValidateAndReloadParams,
+    ) -> Result<ResponseContent<ValidateAndReloadSuccess>, Error<ValidateAndReloadError>>;
+
+    /// POST /write_config
+    ///
+    ///
+    async fn write_config(
+        &self,
+        params: WriteConfigParams,
+    ) -> Result<ResponseContent<WriteConfigSuccess>, Error<WriteConfigError>>;
+}
+
+pub struct NginxAgentApiClient {
+    configuration: Arc<configuration::Configuration>,
+}
+
+impl NginxAgentApiClient {
+    pub fn new(configuration: Arc<configuration::Configuration>) -> Self {
+        Self { configuration }
+    }
+}
+
+/// struct for passing parameters to the method [`NginxAgentApi::validate`]
+#[derive(Clone, Debug)]
+pub struct ValidateParams {
+    pub validate_body: models::ValidateBody,
+}
+
+/// struct for passing parameters to the method [`NginxAgentApi::validate_and_reload`]
+#[derive(Clone, Debug)]
+pub struct ValidateAndReloadParams {
+    pub validate_and_reload_body: models::ValidateAndReloadBody,
+}
+
+/// struct for passing parameters to the method [`NginxAgentApi::write_config`]
+#[derive(Clone, Debug)]
+pub struct WriteConfigParams {
+    pub write_config_body: models::WriteConfigBody,
+}
+
+#[async_trait]
+impl NginxAgentApi for NginxAgentApiClient {
+    async fn status(&self) -> Result<ResponseContent<StatusSuccess>, Error<StatusError>> {
+        let local_var_configuration = &self.configuration;
+
+        let local_var_client = &local_var_configuration.client;
+
+        let local_var_uri_str = format!("{}/status", local_var_configuration.base_path);
+        let mut local_var_req_builder =
+            local_var_client.request(reqwest::Method::GET, local_var_uri_str.as_str());
+
+        if let Some(ref local_var_user_agent) = local_var_configuration.user_agent {
+            local_var_req_builder = local_var_req_builder
+                .header(reqwest::header::USER_AGENT, local_var_user_agent.clone());
+        }
+
+        let local_var_req = local_var_req_builder.build()?;
+        let local_var_resp = local_var_client.execute(local_var_req).await?;
+
+        let local_var_status = local_var_resp.status();
+        let local_var_content = local_var_resp.text().await?;
+
+        if !local_var_status.is_client_error() && !local_var_status.is_server_error() {
+            let local_var_entity: Option<StatusSuccess> =
+                serde_json::from_str(&local_var_content).ok();
+            let local_var_result = ResponseContent {
+                status: local_var_status,
+                content: local_var_content,
+                entity: local_var_entity,
+            };
+            Ok(local_var_result)
+        } else {
+            let local_var_entity: Option<StatusError> =
+                serde_json::from_str(&local_var_content).ok();
+            let local_var_error = ResponseContent {
+                status: local_var_status,
+                content: local_var_content,
+                entity: local_var_entity,
+            };
+            Err(Error::ResponseError(local_var_error))
+        }
+    }
+
+    async fn validate(
+        &self,
+        params: ValidateParams,
+    ) -> Result<ResponseContent<ValidateSuccess>, Error<ValidateError>> {
+        let ValidateParams { validate_body } = params;
+
+        let local_var_configuration = &self.configuration;
+
+        let local_var_client = &local_var_configuration.client;
+
+        let local_var_uri_str = format!("{}/validate", local_var_configuration.base_path);
+        let mut local_var_req_builder =
+            local_var_client.request(reqwest::Method::POST, local_var_uri_str.as_str());
+
+        if let Some(ref local_var_user_agent) = local_var_configuration.user_agent {
+            local_var_req_builder = local_var_req_builder
+                .header(reqwest::header::USER_AGENT, local_var_user_agent.clone());
+        }
+        local_var_req_builder = local_var_req_builder.json(&validate_body);
+
+        let local_var_req = local_var_req_builder.build()?;
+        let local_var_resp = local_var_client.execute(local_var_req).await?;
+
+        let local_var_status = local_var_resp.status();
+        let local_var_content = local_var_resp.text().await?;
+
+        if !local_var_status.is_client_error() && !local_var_status.is_server_error() {
+            let local_var_entity: Option<ValidateSuccess> =
+                serde_json::from_str(&local_var_content).ok();
+            let local_var_result = ResponseContent {
+                status: local_var_status,
+                content: local_var_content,
+                entity: local_var_entity,
+            };
+            Ok(local_var_result)
+        } else {
+            let local_var_entity: Option<ValidateError> =
+                serde_json::from_str(&local_var_content).ok();
+            let local_var_error = ResponseContent {
+                status: local_var_status,
+                content: local_var_content,
+                entity: local_var_entity,
+            };
+            Err(Error::ResponseError(local_var_error))
+        }
+    }
+
+    async fn validate_and_reload(
+        &self,
+        params: ValidateAndReloadParams,
+    ) -> Result<ResponseContent<ValidateAndReloadSuccess>, Error<ValidateAndReloadError>> {
+        let ValidateAndReloadParams {
+            validate_and_reload_body,
+        } = params;
+
+        let local_var_configuration = &self.configuration;
+
+        let local_var_client = &local_var_configuration.client;
+
+        let local_var_uri_str =
+            format!("{}/validate_and_reload", local_var_configuration.base_path);
+        let mut local_var_req_builder =
+            local_var_client.request(reqwest::Method::POST, local_var_uri_str.as_str());
+
+        if let Some(ref local_var_user_agent) = local_var_configuration.user_agent {
+            local_var_req_builder = local_var_req_builder
+                .header(reqwest::header::USER_AGENT, local_var_user_agent.clone());
+        }
+        local_var_req_builder = local_var_req_builder.json(&validate_and_reload_body);
+
+        let local_var_req = local_var_req_builder.build()?;
+        let local_var_resp = local_var_client.execute(local_var_req).await?;
+
+        let local_var_status = local_var_resp.status();
+        let local_var_content = local_var_resp.text().await?;
+
+        if !local_var_status.is_client_error() && !local_var_status.is_server_error() {
+            let local_var_entity: Option<ValidateAndReloadSuccess> =
+                serde_json::from_str(&local_var_content).ok();
+            let local_var_result = ResponseContent {
+                status: local_var_status,
+                content: local_var_content,
+                entity: local_var_entity,
+            };
+            Ok(local_var_result)
+        } else {
+            let local_var_entity: Option<ValidateAndReloadError> =
+                serde_json::from_str(&local_var_content).ok();
+            let local_var_error = ResponseContent {
+                status: local_var_status,
+                content: local_var_content,
+                entity: local_var_entity,
+            };
+            Err(Error::ResponseError(local_var_error))
+        }
+    }
+
+    async fn write_config(
+        &self,
+        params: WriteConfigParams,
+    ) -> Result<ResponseContent<WriteConfigSuccess>, Error<WriteConfigError>> {
+        let WriteConfigParams { write_config_body } = params;
+
+        let local_var_configuration = &self.configuration;
+
+        let local_var_client = &local_var_configuration.client;
+
+        let local_var_uri_str = format!("{}/write_config", local_var_configuration.base_path);
+        let mut local_var_req_builder =
+            local_var_client.request(reqwest::Method::POST, local_var_uri_str.as_str());
+
+        if let Some(ref local_var_user_agent) = local_var_configuration.user_agent {
+            local_var_req_builder = local_var_req_builder
+                .header(reqwest::header::USER_AGENT, local_var_user_agent.clone());
+        }
+        local_var_req_builder = local_var_req_builder.json(&write_config_body);
+
+        let local_var_req = local_var_req_builder.build()?;
+        let local_var_resp = local_var_client.execute(local_var_req).await?;
+
+        let local_var_status = local_var_resp.status();
+        let local_var_content = local_var_resp.text().await?;
+
+        if !local_var_status.is_client_error() && !local_var_status.is_server_error() {
+            let local_var_entity: Option<WriteConfigSuccess> =
+                serde_json::from_str(&local_var_content).ok();
+            let local_var_result = ResponseContent {
+                status: local_var_status,
+                content: local_var_content,
+                entity: local_var_entity,
+            };
+            Ok(local_var_result)
+        } else {
+            let local_var_entity: Option<WriteConfigError> =
+                serde_json::from_str(&local_var_content).ok();
+            let local_var_error = ResponseContent {
+                status: local_var_status,
+                content: local_var_content,
+                entity: local_var_entity,
+            };
+            Err(Error::ResponseError(local_var_error))
+        }
+    }
+}
+
+/// struct for typed successes of method [`NginxAgentApi::status`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum StatusSuccess {
+    Status200(models::StatusResp),
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed successes of method [`NginxAgentApi::validate`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum ValidateSuccess {
+    Status200(serde_json::Value),
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed successes of method [`NginxAgentApi::validate_and_reload`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum ValidateAndReloadSuccess {
+    Status200(models::ValidateAndReloadResp),
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed successes of method [`NginxAgentApi::write_config`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum WriteConfigSuccess {
+    Status200(),
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed errors of method [`NginxAgentApi::status`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum StatusError {
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed errors of method [`NginxAgentApi::validate`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum ValidateError {
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed errors of method [`NginxAgentApi::validate_and_reload`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum ValidateAndReloadError {
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed errors of method [`NginxAgentApi::write_config`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum WriteConfigError {
+    Status500(serde_json::Value),
+    UnknownValue(serde_json::Value),
+}

public/agent-client/src/apis/tag_nginxtag_api.rs

@@ -0,0 +1,280 @@
+/*
+ * yanpm-agent
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ * 
+ * Generated by: https://openapi-generator.tech
+ */
+
+
+use async_trait::async_trait;
+#[cfg(feature = "mockall")]
+use mockall::automock;
+use reqwest;
+use std::sync::Arc;
+use serde::{Deserialize, Serialize, de::Error as _};
+use crate::{apis::ResponseContent, models};
+use super::{Error, configuration};
+use crate::apis::ContentType;
+
+#[cfg_attr(feature = "mockall", automock)]
+#[async_trait]
+pub trait TagNginxtagApi: Send + Sync {
+
+    /// GET /status
+    ///
+    /// 
+    async fn status(&self, ) -> Result<ResponseContent<StatusSuccess>, Error<StatusError>>;
+
+    /// POST /validate
+    ///
+    /// 
+    async fn validate(&self,  params: ValidateParams ) -> Result<ResponseContent<ValidateSuccess>, Error<ValidateError>>;
+
+    /// POST /validate_and_reload
+    ///
+    /// 
+    async fn validate_and_reload(&self,  params: ValidateAndReloadParams ) -> Result<ResponseContent<ValidateAndReloadSuccess>, Error<ValidateAndReloadError>>;
+
+    /// POST /write_config
+    ///
+    /// 
+    async fn write_config(&self,  params: WriteConfigParams ) -> Result<ResponseContent<WriteConfigSuccess>, Error<WriteConfigError>>;
+}
+
+pub struct TagNginxtagApiClient {
+    configuration: Arc<configuration::Configuration>
+}
+
+impl TagNginxtagApiClient {
+    pub fn new(configuration: Arc<configuration::Configuration>) -> Self {
+        Self { configuration }
+    }
+}
+
+
+/// struct for passing parameters to the method [`TagNginxtagApi::validate`]
+#[derive(Clone, Debug)]
+pub struct ValidateParams {
+    pub validate_body: models::ValidateBody
+}
+
+/// struct for passing parameters to the method [`TagNginxtagApi::validate_and_reload`]
+#[derive(Clone, Debug)]
+pub struct ValidateAndReloadParams {
+    pub validate_and_reload_body: models::ValidateAndReloadBody
+}
+
+/// struct for passing parameters to the method [`TagNginxtagApi::write_config`]
+#[derive(Clone, Debug)]
+pub struct WriteConfigParams {
+    pub write_config_body: models::WriteConfigBody
+}
+
+
+#[async_trait]
+impl TagNginxtagApi for TagNginxtagApiClient {
+    async fn status(&self, ) -> Result<ResponseContent<StatusSuccess>, Error<StatusError>> {
+        
+
+        let local_var_configuration = &self.configuration;
+
+        let local_var_client = &local_var_configuration.client;
+
+        let local_var_uri_str = format!("{}/status", local_var_configuration.base_path);
+        let mut local_var_req_builder = local_var_client.request(reqwest::Method::GET, local_var_uri_str.as_str());
+
+        if let Some(ref local_var_user_agent) = local_var_configuration.user_agent {
+            local_var_req_builder = local_var_req_builder.header(reqwest::header::USER_AGENT, local_var_user_agent.clone());
+        }
+
+        let local_var_req = local_var_req_builder.build()?;
+        let local_var_resp = local_var_client.execute(local_var_req).await?;
+
+        let local_var_status = local_var_resp.status();
+        let local_var_content = local_var_resp.text().await?;
+
+        if !local_var_status.is_client_error() && !local_var_status.is_server_error() {
+            let local_var_entity: Option<StatusSuccess> = serde_json::from_str(&local_var_content).ok();
+            let local_var_result = ResponseContent { status: local_var_status, content: local_var_content, entity: local_var_entity };
+            Ok(local_var_result)
+        } else {
+            let local_var_entity: Option<StatusError> = serde_json::from_str(&local_var_content).ok();
+            let local_var_error = ResponseContent { status: local_var_status, content: local_var_content, entity: local_var_entity };
+            Err(Error::ResponseError(local_var_error))
+        }
+    }
+
+    async fn validate(&self,  params: ValidateParams ) -> Result<ResponseContent<ValidateSuccess>, Error<ValidateError>> {
+        
+        let ValidateParams {
+            validate_body,
+        } = params;
+        
+
+        let local_var_configuration = &self.configuration;
+
+        let local_var_client = &local_var_configuration.client;
+
+        let local_var_uri_str = format!("{}/validate", local_var_configuration.base_path);
+        let mut local_var_req_builder = local_var_client.request(reqwest::Method::POST, local_var_uri_str.as_str());
+
+        if let Some(ref local_var_user_agent) = local_var_configuration.user_agent {
+            local_var_req_builder = local_var_req_builder.header(reqwest::header::USER_AGENT, local_var_user_agent.clone());
+        }
+        local_var_req_builder = local_var_req_builder.json(&validate_body);
+
+        let local_var_req = local_var_req_builder.build()?;
+        let local_var_resp = local_var_client.execute(local_var_req).await?;
+
+        let local_var_status = local_var_resp.status();
+        let local_var_content = local_var_resp.text().await?;
+
+        if !local_var_status.is_client_error() && !local_var_status.is_server_error() {
+            let local_var_entity: Option<ValidateSuccess> = serde_json::from_str(&local_var_content).ok();
+            let local_var_result = ResponseContent { status: local_var_status, content: local_var_content, entity: local_var_entity };
+            Ok(local_var_result)
+        } else {
+            let local_var_entity: Option<ValidateError> = serde_json::from_str(&local_var_content).ok();
+            let local_var_error = ResponseContent { status: local_var_status, content: local_var_content, entity: local_var_entity };
+            Err(Error::ResponseError(local_var_error))
+        }
+    }
+
+    async fn validate_and_reload(&self,  params: ValidateAndReloadParams ) -> Result<ResponseContent<ValidateAndReloadSuccess>, Error<ValidateAndReloadError>> {
+        
+        let ValidateAndReloadParams {
+            validate_and_reload_body,
+        } = params;
+        
+
+        let local_var_configuration = &self.configuration;
+
+        let local_var_client = &local_var_configuration.client;
+
+        let local_var_uri_str = format!("{}/validate_and_reload", local_var_configuration.base_path);
+        let mut local_var_req_builder = local_var_client.request(reqwest::Method::POST, local_var_uri_str.as_str());
+
+        if let Some(ref local_var_user_agent) = local_var_configuration.user_agent {
+            local_var_req_builder = local_var_req_builder.header(reqwest::header::USER_AGENT, local_var_user_agent.clone());
+        }
+        local_var_req_builder = local_var_req_builder.json(&validate_and_reload_body);
+
+        let local_var_req = local_var_req_builder.build()?;
+        let local_var_resp = local_var_client.execute(local_var_req).await?;
+
+        let local_var_status = local_var_resp.status();
+        let local_var_content = local_var_resp.text().await?;
+
+        if !local_var_status.is_client_error() && !local_var_status.is_server_error() {
+            let local_var_entity: Option<ValidateAndReloadSuccess> = serde_json::from_str(&local_var_content).ok();
+            let local_var_result = ResponseContent { status: local_var_status, content: local_var_content, entity: local_var_entity };
+            Ok(local_var_result)
+        } else {
+            let local_var_entity: Option<ValidateAndReloadError> = serde_json::from_str(&local_var_content).ok();
+            let local_var_error = ResponseContent { status: local_var_status, content: local_var_content, entity: local_var_entity };
+            Err(Error::ResponseError(local_var_error))
+        }
+    }
+
+    async fn write_config(&self,  params: WriteConfigParams ) -> Result<ResponseContent<WriteConfigSuccess>, Error<WriteConfigError>> {
+        
+        let WriteConfigParams {
+            write_config_body,
+        } = params;
+        
+
+        let local_var_configuration = &self.configuration;
+
+        let local_var_client = &local_var_configuration.client;
+
+        let local_var_uri_str = format!("{}/write_config", local_var_configuration.base_path);
+        let mut local_var_req_builder = local_var_client.request(reqwest::Method::POST, local_var_uri_str.as_str());
+
+        if let Some(ref local_var_user_agent) = local_var_configuration.user_agent {
+            local_var_req_builder = local_var_req_builder.header(reqwest::header::USER_AGENT, local_var_user_agent.clone());
+        }
+        local_var_req_builder = local_var_req_builder.json(&write_config_body);
+
+        let local_var_req = local_var_req_builder.build()?;
+        let local_var_resp = local_var_client.execute(local_var_req).await?;
+
+        let local_var_status = local_var_resp.status();
+        let local_var_content = local_var_resp.text().await?;
+
+        if !local_var_status.is_client_error() && !local_var_status.is_server_error() {
+            let local_var_entity: Option<WriteConfigSuccess> = serde_json::from_str(&local_var_content).ok();
+            let local_var_result = ResponseContent { status: local_var_status, content: local_var_content, entity: local_var_entity };
+            Ok(local_var_result)
+        } else {
+            let local_var_entity: Option<WriteConfigError> = serde_json::from_str(&local_var_content).ok();
+            let local_var_error = ResponseContent { status: local_var_status, content: local_var_content, entity: local_var_entity };
+            Err(Error::ResponseError(local_var_error))
+        }
+    }
+
+}
+
+/// struct for typed successes of method [`TagNginxtagApi::status`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum StatusSuccess {
+    Status200(models::StatusResp),
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed successes of method [`TagNginxtagApi::validate`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum ValidateSuccess {
+    Status200(serde_json::Value),
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed successes of method [`TagNginxtagApi::validate_and_reload`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum ValidateAndReloadSuccess {
+    Status200(models::ValidateAndReloadResp),
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed successes of method [`TagNginxtagApi::write_config`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum WriteConfigSuccess {
+    Status200(),
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed errors of method [`TagNginxtagApi::status`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum StatusError {
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed errors of method [`TagNginxtagApi::validate`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum ValidateError {
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed errors of method [`TagNginxtagApi::validate_and_reload`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum ValidateAndReloadError {
+    UnknownValue(serde_json::Value),
+}
+
+/// struct for typed errors of method [`TagNginxtagApi::write_config`]
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum WriteConfigError {
+    Status500(serde_json::Value),
+    UnknownValue(serde_json::Value),
+}
+

public/agent-client/src/lib.rs

@@ -0,0 +1,10 @@
+#![allow(unused_imports)]
+#![allow(clippy::too_many_arguments)]
+
+extern crate serde;
+extern crate serde_json;
+extern crate serde_repr;
+extern crate url;
+
+pub mod apis;
+pub mod models;

public/agent-client/src/models/mod.rs

@@ -0,0 +1,10 @@
+pub mod status_resp;
+pub use self::status_resp::StatusResp;
+pub mod validate_and_reload_body;
+pub use self::validate_and_reload_body::ValidateAndReloadBody;
+pub mod validate_and_reload_resp;
+pub use self::validate_and_reload_resp::ValidateAndReloadResp;
+pub mod validate_body;
+pub use self::validate_body::ValidateBody;
+pub mod write_config_body;
+pub use self::write_config_body::WriteConfigBody;

public/agent-client/src/models/status_resp.rs

@@ -0,0 +1,24 @@
+/*
+ * yanpm-agent
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ * Generated by: https://openapi-generator.tech
+ */
+
+use crate::models;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
+pub struct StatusResp {
+    #[serde(rename = "ok")]
+    pub ok: bool,
+}
+
+impl StatusResp {
+    pub fn new(ok: bool) -> StatusResp {
+        StatusResp { ok }
+    }
+}

public/agent-client/src/models/validate_and_reload_body.rs

@@ -0,0 +1,29 @@
+/*
+ * yanpm-agent
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ * Generated by: https://openapi-generator.tech
+ */
+
+use crate::models;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
+pub struct ValidateAndReloadBody {
+    #[serde(rename = "config_name")]
+    pub config_name: String,
+    #[serde(rename = "timestamp")]
+    pub timestamp: i64,
+}
+
+impl ValidateAndReloadBody {
+    pub fn new(config_name: String, timestamp: i64) -> ValidateAndReloadBody {
+        ValidateAndReloadBody {
+            config_name,
+            timestamp,
+        }
+    }
+}

public/agent-client/src/models/validate_and_reload_resp.rs

@@ -0,0 +1,26 @@
+/*
+ * yanpm-agent
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ * Generated by: https://openapi-generator.tech
+ */
+
+use crate::models;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
+pub struct ValidateAndReloadResp {
+    #[serde(rename = "rc")]
+    pub rc: i32,
+    #[serde(rename = "ro")]
+    pub ro: String,
+}
+
+impl ValidateAndReloadResp {
+    pub fn new(rc: i32, ro: String) -> ValidateAndReloadResp {
+        ValidateAndReloadResp { rc, ro }
+    }
+}

public/agent-client/src/models/validate_body.rs

@@ -0,0 +1,29 @@
+/*
+ * yanpm-agent
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ * Generated by: https://openapi-generator.tech
+ */
+
+use crate::models;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
+pub struct ValidateBody {
+    #[serde(rename = "config_name")]
+    pub config_name: String,
+    #[serde(rename = "timestamp")]
+    pub timestamp: i64,
+}
+
+impl ValidateBody {
+    pub fn new(config_name: String, timestamp: i64) -> ValidateBody {
+        ValidateBody {
+            config_name,
+            timestamp,
+        }
+    }
+}

public/agent-client/src/models/write_config_body.rs

@@ -0,0 +1,32 @@
+/*
+ * yanpm-agent
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ * Generated by: https://openapi-generator.tech
+ */
+
+use crate::models;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Default, Debug, PartialEq, Serialize, Deserialize)]
+pub struct WriteConfigBody {
+    #[serde(rename = "config_name")]
+    pub config_name: String,
+    #[serde(rename = "content")]
+    pub content: String,
+    #[serde(rename = "timestamp")]
+    pub timestamp: i64,
+}
+
+impl WriteConfigBody {
+    pub fn new(config_name: String, content: String, timestamp: i64) -> WriteConfigBody {
+        WriteConfigBody {
+            config_name,
+            content,
+            timestamp,
+        }
+    }
+}