[Lab3] Mark Petrov

.github/workflows/go-ci.yml

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+name: Go CI/CD Pipeline
+
+on:
+  push:
+    branches:
+      - main
+      - master
+      - lab3
+    paths:
+      - 'app_go/**'
+      - '.github/workflows/go-ci.yml'
+  pull_request:
+    branches:
+      - main
+      - master
+    paths:
+      - 'app_go/**'
+      - '.github/workflows/go-ci.yml'
+
+env:
+  GO_VERSION: '1.21'
+  DOCKER_HUB_USERNAME: ${{ secrets.DOCKER_HUB_USERNAME }}
+  IMAGE_NAME: devops-info-service-go
+
+jobs:
+  test:
+    name: Test and Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ env.GO_VERSION }}
+          cache-dependencies: true
+
+      - name: Run go vet
+        run: |
+          cd app_go
+          go vet ./...
+
+      - name: Run gofmt check
+        run: |
+          cd app_go
+          if [ "$(gofmt -s -l . | wc -l)" -gt 0 ]; then
+            echo "Code is not formatted. Run 'gofmt -s -w .'"
+            gofmt -d .
+            exit 1
+          fi
+
+      - name: Run tests
+        run: |
+          cd app_go
+          go test -v -coverprofile=coverage.out ./...
+
+      - name: Generate coverage report
+        run: |
+          cd app_go
+          go tool cover -html=coverage.out -o coverage.html
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          file: ./app_go/coverage.out
+          flags: go
+          name: go-coverage
+          fail_ci_if_error: false
+
+  build-and-push:
+    name: Build and Push Docker Image
+    runs-on: ubuntu-latest
+    needs: test
+    if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' || github.ref == 'refs/heads/lab3')
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+
+      - name: Generate CalVer version
+        id: calver
+        run: |
+          VERSION=$(date +'%Y.%m.%d')
+          BUILD_NUMBER=${GITHUB_RUN_NUMBER}
+          FULL_VERSION="${VERSION}.${BUILD_NUMBER}"
+          echo "version=${VERSION}" >> $GITHUB_OUTPUT
+          echo "full_version=${FULL_VERSION}" >> $GITHUB_OUTPUT
+          echo "CalVer: ${VERSION}, Full: ${FULL_VERSION}"
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: ./app_go
+          push: true
+          tags: |
+            ${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:${{ steps.calver.outputs.version }}
+            ${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:${{ steps.calver.outputs.full_version }}
+            ${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:latest
+          cache-from: type=registry,ref=${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:buildcache
+          cache-to: type=registry,ref=${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:buildcache,mode=max
+          labels: |
+            org.opencontainers.image.title=DevOps Info Service (Go)
+            org.opencontainers.image.description=DevOps course info service - Go implementation
+            org.opencontainers.image.version=${{ steps.calver.outputs.version }}
+            org.opencontainers.image.revision=${{ github.sha }}

.github/workflows/python-ci.yml

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+name: Python CI/CD Pipeline
+
+on:
+  push:
+    branches:
+      - main
+      - master
+      - lab3
+    paths:
+      - 'app_python/**'
+      - '.github/workflows/python-ci.yml'
+  pull_request:
+    branches:
+      - main
+      - master
+    paths:
+      - 'app_python/**'
+      - '.github/workflows/python-ci.yml'
+
+env:
+  PYTHON_VERSION: '3.13'
+  DOCKER_HUB_USERNAME: ${{ secrets.DOCKER_HUB_USERNAME }}
+  IMAGE_NAME: devops-info-service
+
+jobs:
+  test:
+    name: Test and Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          cache: 'pip'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r app_python/requirements.txt
+
+      - name: Run linter (flake8)
+        run: |
+          cd app_python
+          flake8 app.py tests/ --max-line-length=120 --extend-ignore=E203,W503
+
+      - name: Run formatter check (black)
+        run: |
+          cd app_python
+          black --check app.py tests/
+
+      - name: Run tests with coverage
+        run: |
+          cd app_python
+          pytest tests/ -v --cov=app --cov-report=xml --cov-report=term
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          file: ./app_python/coverage.xml
+          flags: python
+          name: python-coverage
+          fail_ci_if_error: false
+
+  security-scan:
+    name: Security Scanning
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+          cache: 'pip'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r app_python/requirements.txt
+
+      - name: Run Snyk security scan
+        uses: snyk/actions/python@master
+        continue-on-error: true
+        env:
+          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
+        with:
+          args: --severity-threshold=high
+
+  build-and-push:
+    name: Build and Push Docker Image
+    runs-on: ubuntu-latest
+    needs: [test, security-scan]
+    if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' || github.ref == 'refs/heads/lab3')
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=sha,prefix={{branch}}-
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Generate CalVer version
+        id: calver
+        run: |
+          VERSION=$(date +'%Y.%m.%d')
+          BUILD_NUMBER=${GITHUB_RUN_NUMBER}
+          FULL_VERSION="${VERSION}.${BUILD_NUMBER}"
+          echo "version=${VERSION}" >> $GITHUB_OUTPUT
+          echo "full_version=${FULL_VERSION}" >> $GITHUB_OUTPUT
+          echo "CalVer: ${VERSION}, Full: ${FULL_VERSION}"
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: ./app_python
+          push: true
+          tags: |
+            ${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:${{ steps.calver.outputs.version }}
+            ${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:${{ steps.calver.outputs.full_version }}
+            ${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:latest
+          cache-from: type=registry,ref=${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:buildcache
+          cache-to: type=registry,ref=${{ env.DOCKER_HUB_USERNAME }}/${{ env.IMAGE_NAME }}:buildcache,mode=max
+          labels: |
+            org.opencontainers.image.title=DevOps Info Service
+            org.opencontainers.image.description=DevOps course info service
+            org.opencontainers.image.version=${{ steps.calver.outputs.version }}
+            org.opencontainers.image.revision=${{ github.sha }}

app_go/.dockerignore

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+# Compiled binaries
+devops-info-service
+*.exe
+*.dll
+*.so
+*.dylib
+
+# Test binaries
+*.test
+
+# Coverage
+*.out
+
+# Vendor (if not using)
+vendor/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# Git
+.git/
+.gitignore
+
+# Documentation
+docs/
+*.md
+LICENSE
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Docker files
+Dockerfile*
+docker-compose*
+.dockerignore

app_go/.gitignore

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+# Binaries
+devops-info-service
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary
+*.test
+
+# Output of go coverage tool
+*.out
+
+# Dependency directories
+vendor/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Build output
+bin/
+dist/

app_go/Dockerfile

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+# DevOps Info Service - Go Multi-Stage Dockerfile
+# Demonstrates efficient containerization of compiled languages
+
+# =============================================================================
+# Stage 1: Builder - Compile the Go application
+# =============================================================================
+FROM golang:1.21-alpine AS builder
+
+# Install CA certificates for HTTPS (needed in scratch image)
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /build
+
+# Copy go module files first (layer caching)
+COPY go.mod .
+
+# Download dependencies (if any)
+RUN go mod download
+
+# Copy source code
+COPY main.go .
+
+# Build static binary
+# CGO_ENABLED=0: Pure Go, no C dependencies
+# -ldflags="-s -w": Strip debug info for smaller binary
+# -o: Output binary name
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
+    -ldflags="-s -w" \
+    -o devops-info-service \
+    main.go
+
+# =============================================================================
+# Stage 2: Runtime - Minimal production image
+# =============================================================================
+FROM scratch
+
+# Import CA certificates from builder (for HTTPS if needed)
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+
+# Copy the binary from builder stage
+COPY --from=builder /build/devops-info-service /devops-info-service
+
+# Expose the application port
+EXPOSE 8080
+
+# Set default environment variables
+ENV HOST=0.0.0.0 \
+    PORT=8080
+
+# Run as non-root (UID 1000)
+USER 1000:1000
+
+# Run the binary
+ENTRYPOINT ["/devops-info-service"]