Refactor, add packet drops, API docs, CI

.github/workflows/ci.yml

@@ -0,0 +1,121 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    name: Run Tests
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        go-version: ['1.21', '1.22', '1.23']
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: ${{ matrix.go-version }}
+
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y clang libbpf-dev linux-headers-$(uname -r)
+
+    - name: Cache Go modules
+      uses: actions/cache@v3
+      with:
+        path: |
+          ~/.cache/go-build
+          ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ matrix.go-version }}-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-${{ matrix.go-version }}-
+
+    - name: Download Go modules
+      run: go mod download
+
+    - name: Verify Go modules
+      run: go mod verify
+
+    - name: Run go vet
+      run: go vet ./...
+
+    - name: Run tests
+      run: go test -v -race -coverprofile=coverage.out ./...
+
+    - name: Run tests with race detection
+      run: go test -race -v ./...
+
+    - name: Check test coverage
+      run: go tool cover -func=coverage.out
+
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v3
+      with:
+        file: ./coverage.out
+        flags: unittests
+        name: codecov-umbrella
+        fail_ci_if_error: false
+
+  lint:
+    name: Lint Code
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.23'
+
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y clang libbpf-dev linux-headers-$(uname -r)
+
+    - name: Run golangci-lint
+      uses: golangci/golangci-lint-action@v3
+      with:
+        version: latest
+        args: --timeout=5m
+
+  build:
+    name: Build Binary
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.23'
+
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y clang libbpf-dev linux-headers-$(uname -r)
+
+    - name: Build eBPF programs
+      run: make generate
+
+    - name: Build binary
+      run: make build
+
+    - name: Build development binary
+      run: make build-dev
+
+    - name: Test binary can start
+      run: timeout 5s sudo ./bin/ebpf-server -addr :0 || [[ $? == 124 ]]
+

Makefile

@@ -137,10 +137,16 @@ fmt:
 clean:
 	@echo "Cleaning build artifacts..."
 	rm -rf bin/
-	rm -f $(BPF_OBJECTS)
-	rm -f bpf/*.skel.go
-	rm -f bpf/include/vmlinux.h.generated
-	go clean
+	rm -rf bpf/*.o
+
+# Generate API documentation using Swagger
+.PHONY: docs
+docs:
+	@command -v $(shell go env GOPATH)/bin/swag >/dev/null 2>&1 || { echo "Installing swag..."; go install github.com/swaggo/swag/cmd/swag@latest; }
+	$(shell go env GOPATH)/bin/swag init -g internal/api/handlers.go -o docs/swagger --parseDependency --parseInternal
+	@echo "API documentation generated at docs/swagger/"
+	@echo "Interactive docs: http://localhost:8080/docs/ (when server is running)"
+	@echo "External docs: https://petstore.swagger.io/?url=https://raw.githubusercontent.com/srodi/ebpf-server/main/docs/swagger.json"
 
 # Install the binary system-wide
 .PHONY: install