Add pylint tool

Author: zhamborova

cmd/analyze.go

@@ -91,7 +91,7 @@ type Pattern struct {
 }
 
 func init() {
-	analyzeCmd.Flags().StringVarP(&outputFile, "output", "o", "", "output file for the results")
+	analyzeCmd.Flags().StringVarP(&outputFile, "output", "o", "", "Output file for analysis results")
 	analyzeCmd.Flags().StringVarP(&toolToAnalyze, "tool", "t", "", "Which tool to run analysis with")
 	analyzeCmd.Flags().StringVar(&outputFormat, "format", "", "Output format (use 'sarif' for SARIF format)")
 	analyzeCmd.Flags().BoolVar(&autoFix, "fix", false, "Apply auto fix to your issues when available")
@@ -203,6 +203,15 @@ func runTrivyAnalysis(workDirectory string, pathsToCheck []string, outputFile st
 	}
 }
 
+func runPylintAnalysis(workDirectory string, pathsToCheck []string, outputFile string, outputFormat string) {
+	pylint := config.Config.Tools()["pylint"]
+
+	err := tools.RunPylint(workDirectory, pylint, pathsToCheck, outputFile, outputFormat)
+	if err != nil {
+		log.Fatalf("Error running Pylint: %v", err)
+	}
+}
+
 var analyzeCmd = &cobra.Command{
 	Use:   "analyze",
 	Short: "Runs all linters.",
@@ -226,6 +235,8 @@ var analyzeCmd = &cobra.Command{
 			runEslintAnalysis(workDirectory, args, autoFix, outputFile, outputFormat)
 		case "trivy":
 			runTrivyAnalysis(workDirectory, args, outputFile, outputFormat)
+		case "pylint":
+			runPylintAnalysis(workDirectory, args, outputFile, outputFormat)
 		case "":
 			log.Fatal("You need to specify a tool to run analysis with, e.g., '--tool eslint'")
 		default:

cmd/init.go

@@ -75,6 +75,7 @@ func configFileTemplate(tools []tools.Tool) string {
 	// Default versions
 	eslintVersion := "9.3.0"
 	trivyVersion := "0.59.1" // Latest stable version
+	pylintVersion := "3.3.6"
 
 	for _, tool := range tools {
 		if tool.Uuid == "f8b29663-2cb2-498d-b923-a10c6a8c05cd" {
@@ -83,6 +84,9 @@ func configFileTemplate(tools []tools.Tool) string {
 		if tool.Uuid == "2fd7fbe0-33f9-4ab3-ab73-e9b62404e2cb" {
 			trivyVersion = tool.Version
 		}
+		if tool.Uuid == "31677b6d-4ae0-4f56-8041-606a8d7a8e61" {
+			pylintVersion = tool.Version
+		}
 	}
 
 	return fmt.Sprintf(`runtimes:
@@ -91,7 +95,8 @@ func configFileTemplate(tools []tools.Tool) string {
 tools:
     - eslint@%s
     - trivy@%s
-`, eslintVersion, trivyVersion)
+    - pylint@%s
+`, eslintVersion, trivyVersion, pylintVersion)
 }
 
 func buildRepositoryConfigurationFiles(token string) error {

config/tools-installer.go

@@ -44,8 +44,16 @@ func InstallTool(name string, toolInfo *plugins.ToolInfo) error {
 		return installDownloadBasedTool(toolInfo)
 	}
 
-	// This is a runtime-based tool, proceed with regular installation
+	// Handle Python tools differently
+	if toolInfo.Runtime == "python" {
+		return installPythonTool(name, toolInfo)
+	}
+
+	// Handle other runtime-based tools
+	return installRuntimeTool(name, toolInfo)
+}
 
+func installRuntimeTool(name string, toolInfo *plugins.ToolInfo) error {
 	// Get the runtime for this tool
 	runtimeInfo, ok := Config.Runtimes()[toolInfo.Runtime]
 	if !ok {
@@ -159,6 +167,38 @@ func installDownloadBasedTool(toolInfo *plugins.ToolInfo) error {
 	return nil
 }
 
+func installPythonTool(name string, toolInfo *plugins.ToolInfo) error {
+	log.Printf("Installing %s v%s...\n", toolInfo.Name, toolInfo.Version)
+
+	runtimeInfo, ok := Config.Runtimes()[toolInfo.Runtime]
+	if !ok {
+		return fmt.Errorf("required runtime %s not found for tool %s", toolInfo.Runtime, name)
+	}
+
+	pythonBinary, ok := runtimeInfo.Binaries["python3"]
+	if !ok {
+		return fmt.Errorf("python3 binary not found in runtime")
+	}
+
+	// Create venv
+	cmd := exec.Command(pythonBinary, "-m", "venv", filepath.Join(toolInfo.InstallDir, "venv"))
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("failed to create venv: %s\nError: %w", string(output), err)
+	}
+
+	// Install the tool using pip from venv
+	pipPath := filepath.Join(toolInfo.InstallDir, "venv", "bin", "pip")
+	cmd = exec.Command(pipPath, "install", fmt.Sprintf("%s==%s", toolInfo.Name, toolInfo.Version))
+	output, err = cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("failed to install tool: %s\nError: %w", string(output), err)
+	}
+
+	log.Printf("Successfully installed %s v%s\n", toolInfo.Name, toolInfo.Version)
+	return nil
+}
+
 // isToolInstalled checks if a tool is already installed by checking for the binary
 func isToolInstalled(toolInfo *plugins.ToolInfo) bool {
 	// If there are no binaries, check the install directory

plugins/runtime-utils.go

@@ -254,6 +254,11 @@ func (p *runtimePlugin) getDownloadURL(version string) string {
 
 // GetInstallationDirectoryPath returns the installation directory path for the runtime
 func (p *runtimePlugin) getInstallationDirectoryPath(runtimesDir string, version string) string {
+	// For Python, we want to use a simpler directory structure
+	if p.Config.Name == "python" {
+		return path.Join(runtimesDir, "python")
+	}
+	// For other runtimes, keep using the filename-based directory
 	fileName := p.getFileName(version)
 	return path.Join(runtimesDir, fileName)
 }

plugins/runtimes/python/plugin.yaml

@@ -18,6 +18,6 @@ download:
     "windows": "pc-windows-msvc"
 binaries:
   - name: python3
-    path: "python/bin/python3"
+    path: "bin/python3"
   - name: pip
-    path: "python/bin/pip"
+    path: "bin/pip"

plugins/tools/pylint/plugin.yaml

@@ -0,0 +1,16 @@
+name: pylint
+description: Python linter
+runtime: python
+runtime_binaries:
+  package_manager: python3
+  execution: python3
+binaries:
+  - name: python
+    path: "venv/bin/python3"
+formatters:
+  - name: json
+    flag: "--output-format=json"
+output_options:
+  file_flag: "--output"
+analysis_options:
+  default_path: "." 

tools/pylintRunner.go

@@ -0,0 +1,80 @@
+package tools
+
+import (
+	"codacy/cli-v2/plugins"
+	"codacy/cli-v2/utils"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+func RunPylint(workDirectory string, toolInfo *plugins.ToolInfo, files []string, outputFile string, outputFormat string) error {
+	// Get Python binary from venv
+	pythonPath := filepath.Join(toolInfo.InstallDir, "venv", "bin", "python3")
+
+	// Construct base command with -m pylint to run pylint module
+	args := []string{"-m", "pylint"}
+
+	// Always use JSON output format since we'll convert to SARIF if needed
+	args = append(args, "--output-format=json")
+
+	// Create a temporary file for JSON output if we need to convert to SARIF
+	var tempFile string
+	if outputFormat == "sarif" {
+		tmp, err := os.CreateTemp("", "pylint-*.json")
+		if err != nil {
+			return fmt.Errorf("failed to create temporary file: %w", err)
+		}
+		tempFile = tmp.Name()
+		tmp.Close()
+		defer os.Remove(tempFile)
+		args = append(args, fmt.Sprintf("--output=%s", tempFile))
+	} else if outputFile != "" {
+		args = append(args, fmt.Sprintf("--output=%s", outputFile))
+	}
+
+	// Add files to analyze - if no files specified, analyze current directory
+	if len(files) > 0 {
+		args = append(args, files...)
+	} else {
+		args = append(args, ".")
+	}
+
+	// Create and run command
+	cmd := exec.Command(pythonPath, args...)
+	cmd.Dir = workDirectory
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	// Run the command
+	err := cmd.Run()
+	if err != nil {
+		// Pylint returns non-zero exit code when it finds issues
+		// We should not treat this as an error
+		if _, ok := err.(*exec.ExitError); !ok {
+			return fmt.Errorf("failed to run pylint: %w", err)
+		}
+	}
+
+	// If SARIF output is requested, convert JSON to SARIF
+	if outputFormat == "sarif" {
+		jsonOutput, err := os.ReadFile(tempFile)
+		if err != nil {
+			return fmt.Errorf("failed to read pylint output: %w", err)
+		}
+
+		sarifOutput := utils.ConvertPylintToSarif(jsonOutput)
+
+		if outputFile != "" {
+			err = os.WriteFile(outputFile, sarifOutput, 0644)
+			if err != nil {
+				return fmt.Errorf("failed to write SARIF output: %w", err)
+			}
+		} else {
+			fmt.Println(string(sarifOutput))
+		}
+	}
+
+	return nil
+}