### Deploy Node.js App with worker-deployment

Source: https://github.com/udx/worker-nodejs/blob/latest/src/examples/README.md

Installs the worker-deployment tool globally, navigates to the example directory, copies the deployment configuration, and runs the worker.

```bash
npm install -g @udx/worker-deployment
cd src/examples
cp simple-server/deploy.yml deploy.yml
worker run
```

--------------------------------

### Install Deployment CLI

Source: https://github.com/udx/worker-nodejs/blob/latest/README.md

Installs the global deployment CLI required for managing UDX worker applications.

```bash
npm install -g @udx/worker-deployment
```

--------------------------------

### Install and Configure UDX Worker Deployment CLI

Source: https://context7.com/udx/worker-nodejs/llms.txt

Installs the `@udx/worker-deployment` CLI globally using npm, generates a default `deploy.yml` configuration, and starts the container with the application.

```bash
# Install the worker-deployment CLI
npm install -g @udx/worker-deployment

# Generate a default deploy.yml configuration
worker config

# Start the container with your application
worker run
```

--------------------------------

### Run Container

Source: https://github.com/udx/worker-nodejs/blob/latest/README.md

Starts the worker container based on the current configuration.

```bash
worker run
```

--------------------------------

### Build and Test UDX Worker Node.js Project

Source: https://context7.com/udx/worker-nodejs/llms.txt

Commands to clone the repository, build the project for local or multiple platforms, and run validation tests. Assumes a Unix-like environment with Make and Git installed.

```bash
git clone https://github.com/udx/worker-nodejs.git
cd worker-nodejs

# Build for local platform
make build

# Build for multiple platforms (linux/amd64 and linux/arm64)
make build MULTIPLATFORM=true

# Run validation tests
make test

# Run a specific test
make run-test TEST_SCRIPT=10_validate_environment.sh

# Run container interactively for debugging
make run-it
```

--------------------------------

### Configure and Run UDX Worker Node.js Container with Environment Variables

Source: https://context7.com/udx/worker-nodejs/llms.txt

Demonstrates how to configure a UDX Worker Node.js container using environment variables and Docker. This example sets application port, Node.js environment, and mounts configuration and application directories.

```bash
# Application settings
APP_PORT=8080           # Port for your application (default: 8080)
NODE_ENV=production     # Node.js environment mode

# Container paths
APP_HOME=/usr/src/app   # Application working directory

# Example: Run with custom environment
docker run -d --name my-app \
  -e APP_PORT=3000 \
  -e NODE_ENV=development \
  -e DATABASE_URL="postgres://localhost:5432/mydb" \
  -v $(pwd)/app:/usr/src/app \
  -v $(pwd)/app/.config/worker:/home/udx/.config/worker:ro \
  -p 3000:3000 \
  usabilitydynamics/udx-worker-nodejs:latest
```

--------------------------------

### Run UDX Worker Node.js Application with Docker

Source: https://context7.com/udx/worker-nodejs/llms.txt

Demonstrates how to run the UDX Worker Node.js container directly using Docker commands. It includes commands for starting the container with volume mounts and environment variables, checking logs, executing commands inside the container, and stopping/removing the container.

```bash
# Run container with volume mounts for application and configuration
docker run -d --name my-node-app \
  -v $(pwd)/my-app:/usr/src/app \
  -v $(pwd)/my-app/.config/worker:/home/udx/.config/worker:ro \
  -p 8080:8080 \
  -e NODE_ENV=production \
  usabilitydynamics/udx-worker-nodejs:latest

# Check container logs
docker logs my-node-app

# Execute commands inside the running container
docker exec -it my-node-app /bin/bash

# Stop and remove the container
docker rm -f my-node-app
```

--------------------------------

### Manage UDX Worker Services with CLI

Source: https://context7.com/udx/worker-nodejs/llms.txt

Provides commands to manage the lifecycle of services running within the UDX Worker container. Includes restarting, checking status, stopping, and starting services.

```bash
# Restart a service
worker service restart simple-server

# Check service status
worker service status simple-server
# Output: ✓ simple-server RUNNING

# Stop a service
worker service stop simple-server

# Start a service
worker service start simple-server
```

--------------------------------

### Minimal Node.js HTTP Server for UDX Worker

Source: https://context7.com/udx/worker-nodejs/llms.txt

A basic Node.js HTTP server example that listens on a specified port (defaulting to 8080) and responds with a JSON message. It includes periodic logging for health monitoring.

```javascript
// index.js - Simple HTTP server for UDX Worker Node.js
const http = require("http");
const port = process.env.APP_PORT || 8080;

const server = http.createServer((req, res) => {
  res.writeHead(200, { "Content-Type": "application/json" });
  res.end(JSON.stringify({
    message: "Welcome to UDX Worker Node.js!",
    timestamp: new Date().toISOString(),
    port: port
  }));
});

server.listen(port, () => {
  console.log(`[${new Date().toISOString()}] Server started on http://localhost:${port}/`);

  // Periodic health log for monitoring
  setInterval(() => {
    console.log(`[${new Date().toISOString()}] Server is running...`);
  }, 5000);
});
```

--------------------------------

### Test Node.js Health Endpoint using cURL

Source: https://context7.com/udx/worker-nodejs/llms.txt

A bash command to test the `/health` endpoint of a Node.js application running within a UDX Worker container. It sends a GET request and displays the JSON output from the health check.

```bash
# Test health endpoint
curl http://localhost:8080/health
# Output: {"status":"healthy","uptime":123.456}
```

--------------------------------

### Generate Configuration

Source: https://github.com/udx/worker-nodejs/blob/latest/README.md

Creates a default deploy.yml configuration file for the application.

```bash
worker config
```

--------------------------------

### Clone and Build Repository

Source: https://github.com/udx/worker-nodejs/blob/latest/README.md

Clones the source code and executes the build and test suite.

```bash
git clone https://github.com/udx/worker-nodejs.git
cd worker-nodejs

make build
make test
```

--------------------------------

### Run Node.js App with Docker

Source: https://github.com/udx/worker-nodejs/blob/latest/src/examples/README.md

Launches a Node.js application as a detached Docker container, mounting the application code and configuration, and exposing port 8080.

```bash
docker run -d --name my-node-app \
  -v $(pwd)/simple-server:/usr/src/app \
  -v $(pwd)/simple-server/.config:/home/udx/.config \
  -p 8080:8080 \
  usabilitydynamics/udx-worker-nodejs:latest
```

--------------------------------

### UDX Worker Node.js Application Directory Structure

Source: https://context7.com/udx/worker-nodejs/llms.txt

Illustrates the recommended directory structure for a Node.js application intended to work with UDX Worker Node.js. Key files include service definitions, main entry point, package.json, and deployment configuration.

```tree
my-app/
├── .config/
│   └── worker/
│       └── services.yaml    # Service definitions for process manager
├── index.js                 # Main application entry point
├── package.json             # Node.js dependencies (optional)
└── deploy.yml               # Deployment configuration (project root)
```

--------------------------------

### Configure Node.js Worker Service

Source: https://github.com/udx/worker-nodejs/blob/latest/src/examples/README.md

Defines a Node.js service for the UDX worker, specifying the command to run and enabling auto-start and auto-restart.

```yaml
kind: workerService
version: udx.io/worker-v1/service

services:
  - name: "simple-server"
    command: "node /usr/src/app/index.js"
    autostart: true
    autorestart: true
```

--------------------------------

### Run Specific Test

Source: https://github.com/udx/worker-nodejs/blob/latest/README.md

Executes a single test script by specifying the TEST_SCRIPT variable.

```bash
make run-test TEST_SCRIPT=10_validate_environment.sh
```

--------------------------------

### Deploy UDX Worker Node.js Application with Docker Compose

Source: https://context7.com/udx/worker-nodejs/llms.txt

Defines a multi-container deployment for a UDX Worker Node.js application using Docker Compose. The `docker-compose.yml` file specifies the image, volumes, ports, environment variables, and restart policy.

```yaml
# docker-compose.yml
version: '3' 
services:
  app:
    image: usabilitydynamics/udx-worker-nodejs:latest
    volumes:
      - ./my-app:/usr/src/app
      - ./my-app/.config/worker:/home/udx/.config/worker:ro
    ports:
      - "8080:8080"
    environment:
      - NODE_ENV=production
      - APP_PORT=8080
    restart: unless-stopped
```

--------------------------------

### Mount Application Code Volume

Source: https://github.com/udx/worker-nodejs/blob/latest/src/examples/README.md

Specifies the volume mount for the application code, mapping a local directory to the container's application path.

```bash
-v ./app:/usr/src/app
```

--------------------------------

### UDX Worker Node.js Deploy Configuration (deploy.yml)

Source: https://context7.com/udx/worker-nodejs/llms.txt

Defines the Docker image, volume mounts, and port mappings for a UDX Worker Node.js application deployment. It specifies the image to use and how host directories should be mounted into the container.

```yaml
# deploy.yml - Deployment configuration for UDX Worker Node.js
kind: workerDeployConfig
version: udx.io/worker-v1/deploy
config:
  image: "usabilitydynamics/udx-worker-nodejs:latest"

  # Volume mounts: "host_path:container_path" or "host_path:container_path:ro"
  volumes:
    - "./my-app:/usr/src/app"
    - "./my-app/.config/worker:/home/udx/.config/worker:ro"

  # Ports to expose: "host_port:container_port"
  ports:
    - "8080:8080"
```

--------------------------------

### Docker Compose for Node.js App

Source: https://github.com/udx/worker-nodejs/blob/latest/src/examples/README.md

Defines a Docker Compose service for running a Node.js application with the UDX worker image, including volume mounts and port mapping.

```yaml
version: '3'
services:
  app:
    image: usabilitydynamics/udx-worker-nodejs:latest
    volumes:
      - ./simple-server:/usr/src/app
      - ./simple-server/.config:/home/udx/.config
    ports:
      - "8080:8080"
```

--------------------------------

### UDX Worker Node.js Service Configuration (services.yaml)

Source: https://context7.com/udx/worker-nodejs/llms.txt

Configures how the UDX Worker process manager runs and supervises a Node.js application. It defines service name, command to execute, autostart/autorestart policies, and environment variables.

```yaml
# .config/worker/services.yaml - Service definition for process management
kind: workerService
version: udx.io/worker-v1/service

services:
  - name: "my-node-app"
    command: "node /usr/src/app/index.js"
    autostart: true      # Start service when container launches
    autorestart: true    # Restart service if it crashes
    envs:
      - "APP_PORT=8080"
      - "NODE_ENV=production"
```

--------------------------------

### Mount Worker Configuration Volume

Source: https://github.com/udx/worker-nodejs/blob/latest/src/examples/README.md

Specifies the volume mount for the worker configuration, mapping a local configuration directory to the container's configuration path.

```bash
-v ./.config:/home/udx/.config
```

--------------------------------

### Implement Health Check Endpoint in Node.js Application

Source: https://context7.com/udx/worker-nodejs/llms.txt

A Node.js code snippet for `index.js` that implements a basic HTTP server with a `/health` endpoint. This endpoint returns a JSON response indicating the application's status and uptime, suitable for container orchestration health checks.

```javascript
// index.js with health check endpoint
const http = require("http");
const port = process.env.APP_PORT || 8080;

const server = http.createServer((req, res) => {
  if (req.url === "/health" && req.method === "GET") {
    res.writeHead(200, { "Content-Type": "application/json" });
    res.end(JSON.stringify({ status: "healthy", uptime: process.uptime() }));
    return;
  }

  res.writeHead(200, { "Content-Type": "text/plain" });
  res.end("UDX Worker Node.js Application");
});

server.listen(port, () => {
  console.log(`[${new Date().toISOString()}] Server listening on port ${port}`);
});
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.