@tehreet/conduit/docs/cicd.md

LLM API gateway with intelligent routing, robust process management, and health monitoring

# CI/CD Strategy for Conduit

## Table of Contents

- [Overview](#overview)
- [CI/CD Goals](#cicd-goals)
- [Technology Stack](#technology-stack)
- [Pipeline Architecture](#pipeline-architecture)
- [Branch Strategy](#branch-strategy)
- [Continuous Integration](#continuous-integration)
- [Continuous Deployment](#continuous-deployment)
- [NPM Publishing Strategy](#npm-publishing-strategy)
- [Docker Registry](#docker-registry)
- [Security & Compliance](#security--compliance)
- [Monitoring & Alerts](#monitoring--alerts)
- [Implementation Roadmap](#implementation-roadmap)

## Overview

This document outlines the comprehensive CI/CD strategy for Conduit, an intelligent LLM API gateway. Our CI/CD pipeline ensures code quality, automates testing, manages releases, and handles deployment across multiple environments.

## CI/CD Goals

1. **Automated Quality Assurance**: Ensure every commit meets quality standards
2. **Rapid Feedback**: Provide developers with quick feedback on code changes
3. **Automated Releases**: Streamline the release process with semantic versioning
4. **Zero-Downtime Deployments**: Deploy updates without service interruption
5. **Security First**: Integrate security scanning throughout the pipeline
6. **Reproducible Builds**: Ensure consistent builds across environments

## Technology Stack

- **CI/CD Platform**: GitHub Actions (primary), with GitLab CI/CD as backup
- **Container Registry**: GitHub Container Registry (GHCR) and Docker Hub
- **NPM Registry**: npmjs.com for public package distribution
- **Testing Frameworks**: Jest (unit), Playwright (E2E), Artillery (load testing)
- **Code Quality**: ESLint, Prettier, TypeScript compiler, SonarCloud
- **Security Scanning**: Snyk, GitHub Dependabot, OWASP Dependency Check
- **Monitoring**: Datadog, Prometheus, Grafana

## Pipeline Architecture

```mermaid
graph LR
    A[Code Push] --> B[CI Pipeline]
    B --> C{Branch?}
    C -->|main| D[Production Pipeline]
    C -->|develop| E[Staging Pipeline]
    C -->|feature/*| F[Feature Pipeline]
    
    D --> G[NPM Publish]
    D --> H[Docker Build]
    D --> I[Deploy Prod]
    
    E --> J[Deploy Staging]
    
    F --> K[PR Checks]
```

## Branch Strategy

We follow a modified GitFlow strategy:

- **main**: Production-ready code, protected branch
- **develop**: Integration branch for features
- **feature/***: Feature development branches
- **release/***: Release preparation branches
- **hotfix/***: Emergency fixes for production

### Branch Protection Rules

**Main Branch**:
- Require PR reviews (minimum 2 approvers)
- Require status checks to pass
- Require branches to be up to date
- Include administrators in restrictions
- Restrict force pushes and deletions

## Continuous Integration

### GitHub Actions Workflow: `.github/workflows/ci.yml`

```yaml
name: CI Pipeline

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main, develop]

env:
  NODE_VERSION: '20.x'
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  # Code Quality Checks
  quality:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
      
      - name: Install dependencies
        run: npm ci
      
      - name: Lint code
        run: npm run lint
      
      - name: Format check
        run: npm run format:check
      
      - name: Type check
        run: npm run typecheck
      
      - name: License check
        run: npx license-checker --production --onlyAllow 'MIT;Apache-2.0;BSD-3-Clause;BSD-2-Clause;ISC'

  # Security Scanning
  security:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Run Snyk Security Scan
        uses: snyk/actions/node@master
        env:
          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
        with:
          args: --severity-threshold=high
      
      - name: Upload Snyk results
        uses: github/codeql-action/upload-sarif@v2
        if: always()
        with:
          sarif_file: snyk.sarif

  # Unit Tests
  test-unit:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        node-version: [18.x, 20.x, 22.x]
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v4
        with:
          node-version: ${{ matrix.node-version }}
          cache: 'npm'
      
      - name: Install dependencies
        run: npm ci
      
      - name: Run unit tests
        run: npm run test:unit -- --coverage
      
      - name: Upload coverage
        uses: codecov/codecov-action@v3
        with:
          token: ${{ secrets.CODECOV_TOKEN }}
          flags: unit

  # Integration Tests
  test-integration:
    runs-on: ubuntu-latest
    services:
      redis:
        image: redis:7-alpine
        options: >-
          --health-cmd "redis-cli ping"
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
        ports:
          - 6379:6379
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
      
      - name: Install dependencies
        run: npm ci
      
      - name: Run integration tests
        run: npm run test:integration
        env:
          REDIS_URL: redis://localhost:6379

  # Build Artifacts
  build:
    needs: [quality, security, test-unit]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
      
      - name: Install dependencies
        run: npm ci
      
      - name: Build
        run: npm run build
      
      - name: Package artifacts
        run: |
          tar -czf conduit-${{ github.sha }}.tar.gz dist package.json package-lock.json
      
      - name: Upload artifacts
        uses: actions/upload-artifact@v3
        with:
          name: build-artifacts
          path: conduit-${{ github.sha }}.tar.gz
          retention-days: 7

  # SonarCloud Analysis
  sonarcloud:
    needs: [test-unit]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      
      - name: SonarCloud Scan
        uses: SonarSource/sonarcloud-github-action@master
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
```

### Pull Request Workflow: `.github/workflows/pr.yml`

```yaml
name: PR Validation

on:
  pull_request:
    types: [opened, synchronize, reopened]

jobs:
  # PR Title Validation
  pr-title:
    runs-on: ubuntu-latest
    steps:
      - name: Check PR title
        uses: amannn/action-semantic-pull-request@v5
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          types: |
            feat
            fix
            docs
            style
            refactor
            perf
            test
            build
            ci
            chore
            revert

  # Size Check
  size-check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Check bundle size
        uses: andresz1/size-limit-action@v1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          skip_step: install
          script: npm run size

  # Preview Deployment
  preview:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Deploy Preview
        uses: amondnet/vercel-action@v20
        with:
          vercel-token: ${{ secrets.VERCEL_TOKEN }}
          github-token: ${{ secrets.GITHUB_TOKEN }}
          vercel-org-id: ${{ secrets.VERCEL_ORG_ID }}
          vercel-project-id: ${{ secrets.VERCEL_PROJECT_ID }}
```

## Continuous Deployment

### Release Workflow: `.github/workflows/release.yml`

```yaml
name: Release Pipeline

on:
  push:
    branches: [main]
  workflow_dispatch:
    inputs:
      release-type:
        description: 'Release type'
        required: true
        default: 'patch'
        type: choice
        options:
          - patch
          - minor
          - major

permissions:
  contents: write
  packages: write
  id-token: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}
      
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          registry-url: 'https://registry.npmjs.org'
      
      - name: Install dependencies
        run: npm ci
      
      - name: Build
        run: npm run build
      
      - name: Determine version
        id: version
        run: |
          if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
            npm version ${{ github.event.inputs.release-type }} --no-git-tag-version
          else
            npm run semantic-release --dry-run
          fi
          echo "version=$(node -p "require('./package.json').version")" >> $GITHUB_OUTPUT
      
      - name: Create Release
        uses: semantic-release/semantic-release@v21
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

  docker:
    needs: release
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      
      - name: Log in to GHCR
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      
      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      
      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
            ${{ secrets.DOCKERHUB_USERNAME }}/conduit
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha
      
      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

  deploy-production:
    needs: [release, docker]
    runs-on: ubuntu-latest
    environment: production
    steps:
      - name: Deploy to Production
        run: |
          # Deployment logic here
          echo "Deploying version ${{ needs.release.outputs.version }} to production"
```

## NPM Publishing Strategy

### Automated NPM Publishing

1. **Version Management**:
   - Use [semantic-release](https://github.com/semantic-release/semantic-release) for automated versioning
   - Follow [Conventional Commits](https://www.conventionalcommits.org/) specification
   - Automatic CHANGELOG generation

2. **Publishing Configuration**: `.releaserc.json`

```json
{
  "branches": ["main"],
  "plugins": [
    "@semantic-release/commit-analyzer",
    "@semantic-release/release-notes-generator",
    "@semantic-release/changelog",
    "@semantic-release/npm",
    [
      "@semantic-release/git",
      {
        "assets": ["package.json", "package-lock.json", "CHANGELOG.md"],
        "message": "chore(release): ${nextRelease.version} [skip ci]\n\n${nextRelease.notes}"
      }
    ],
    "@semantic-release/github"
  ]
}
```

3. **NPM Configuration**: `.npmrc`

```ini
//registry.npmjs.org/:_authToken=${NPM_TOKEN}
@tehreet:registry=https://registry.npmjs.org/
access=public
save-exact=true
engine-strict=true
```

4. **Pre-publish Checklist**:
   - Run full test suite
   - Verify no security vulnerabilities
   - Check bundle size limits
   - Validate package contents with `npm pack --dry-run`
   - Ensure LICENSE file is included

### Beta and Canary Releases

```yaml
# .github/workflows/canary.yml
name: Canary Release

on:
  push:
    branches: [develop]

jobs:
  canary:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          registry-url: 'https://registry.npmjs.org'
      
      - name: Install and Build
        run: |
          npm ci
          npm run build
      
      - name: Publish Canary
        run: |
          npm version prerelease --preid=canary.$(git rev-parse --short HEAD) --no-git-tag-version
          npm publish --tag canary
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
```

## Docker Registry

### Multi-Registry Strategy

1. **GitHub Container Registry (GHCR)**:
   - Primary registry for development/staging
   - Integrated with GitHub permissions
   - Free for public repositories

2. **Docker Hub**:
   - Public distribution
   - Better global CDN
   - Community visibility

3. **Image Tagging Strategy**:
   - `latest`: Latest stable release
   - `v1.2.3`: Specific version
   - `v1.2`: Minor version (auto-updates patch)
   - `v1`: Major version (auto-updates minor/patch)
   - `canary`: Latest development build
   - `sha-abc1234`: Commit-specific builds

## Security & Compliance

### Security Scanning Pipeline

```yaml
# .github/workflows/security.yml
name: Security Audit

on:
  schedule:
    - cron: '0 0 * * *'  # Daily at midnight
  push:
    branches: [main, develop]

jobs:
  audit:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Run npm audit
        run: npm audit --production
      
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          scan-type: 'fs'
          scan-ref: '.'
          format: 'sarif'
          output: 'trivy-results.sarif'
      
      - name: Upload Trivy results
        uses: github/codeql-action/upload-sarif@v2
        with:
          sarif_file: 'trivy-results.sarif'

  dependency-review:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/dependency-review-action@v3
        with:
          fail-on-severity: moderate
```

### Secrets Management

1. **GitHub Secrets Required**:
   - `NPM_TOKEN`: NPM authentication token
   - `DOCKERHUB_USERNAME`: Docker Hub username
   - `DOCKERHUB_TOKEN`: Docker Hub access token
   - `SNYK_TOKEN`: Snyk authentication token
   - `SONAR_TOKEN`: SonarCloud token
   - `CODECOV_TOKEN`: Codecov token
   - `VERCEL_TOKEN`: Vercel deployment token

2. **Secret Rotation**:
   - Rotate all tokens every 90 days
   - Use GitHub's secret scanning
   - Implement least privilege principle

## Monitoring & Alerts

### CI/CD Metrics

1. **Key Metrics to Track**:
   - Build success rate
   - Average build time
   - Test pass rate
   - Deployment frequency
   - Mean time to recovery (MTTR)
   - Change failure rate

2. **Alerting Rules**:
   - Failed builds on main branch
   - Security vulnerabilities (high/critical)
   - Performance regression >10%
   - Bundle size increase >5%
   - Test coverage drop >2%

3. **Dashboard Configuration**:

```yaml
# datadog-dashboard.yaml
widgets:
  - title: "CI/CD Pipeline Health"
    type: "timeseries"
    requests:
      - q: "avg:github.actions.workflow.run.duration{workflow:ci-pipeline}"
  
  - title: "Deployment Success Rate"
    type: "query_value"
    requests:
      - q: "sum:deployments.success{env:production}.as_rate()"
  
  - title: "NPM Downloads"
    type: "timeseries"
    requests:
      - q: "sum:npm.downloads{package:@tehreet/conduit}"
```

## Implementation Roadmap

### Phase 1: Foundation (Week 1-2)
- [ ] Set up GitHub Actions workflows
- [ ] Configure branch protection rules
- [ ] Implement basic CI pipeline (lint, test, build)
- [ ] Set up Codecov and SonarCloud

### Phase 2: Security & Quality (Week 3-4)
- [ ] Integrate Snyk security scanning
- [ ] Add dependency vulnerability checks
- [ ] Implement bundle size monitoring
- [ ] Set up license compliance checks

### Phase 3: Automated Releases (Week 5-6)
- [ ] Configure semantic-release
- [ ] Set up NPM publishing automation
- [ ] Implement Docker multi-arch builds
- [ ] Create canary release pipeline

### Phase 4: Advanced Features (Week 7-8)
- [ ] Add E2E testing with Playwright
- [ ] Implement load testing with Artillery
- [ ] Set up preview deployments
- [ ] Create rollback mechanisms

### Phase 5: Monitoring & Optimization (Week 9-10)
- [ ] Configure Datadog monitoring
- [ ] Create CI/CD dashboards
- [ ] Implement performance budgets
- [ ] Optimize pipeline performance

## Best Practices

1. **Keep Pipelines Fast**:
   - Parallelize independent jobs
   - Use caching effectively
   - Optimize Docker layer caching
   - Run only affected tests

2. **Maintain High Visibility**:
   - Use status badges in README
   - Send notifications to Slack/Discord
   - Create detailed deployment logs
   - Maintain audit trails

3. **Ensure Reproducibility**:
   - Pin all dependency versions
   - Use deterministic builds
   - Archive all artifacts
   - Tag all Docker images

4. **Practice Continuous Improvement**:
   - Regular pipeline reviews
   - Monitor and optimize costs
   - Update dependencies monthly
   - Conduct security audits quarterly

## Conclusion

This CI/CD strategy provides a robust foundation for Conduit's development and deployment processes. By implementing these pipelines, we ensure code quality, automate repetitive tasks, and maintain a secure and reliable release process. Regular reviews and updates of this strategy will help us adapt to changing requirements and emerging best practices.