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feat: Add support for local cfn-lint executable #407
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,152 @@ | ||
| import { spawn } from 'child_process'; | ||
| import { writeFile, unlink } from 'fs/promises'; | ||
| import { tmpdir } from 'os'; | ||
| import { join } from 'path'; | ||
| import { PublishDiagnosticsParams, DiagnosticSeverity } from 'vscode-languageserver'; | ||
| import { CloudFormationFileType } from '../../document/Document'; | ||
| import { LoggerFactory } from '../../telemetry/LoggerFactory'; | ||
| import { extractErrorMessage } from '../../utils/Errors'; | ||
|
|
||
| interface CfnLintDiagnostic { | ||
| Level: string; | ||
| Message: string; | ||
| Rule: { | ||
| Id: string; | ||
| Description: string; | ||
| Source: string; | ||
| }; | ||
| Location: { | ||
| Start: { | ||
| LineNumber: number; | ||
| ColumnNumber: number; | ||
| }; | ||
| End: { | ||
| LineNumber: number; | ||
| ColumnNumber: number; | ||
| }; | ||
| Path: string[]; | ||
| }; | ||
| Filename: string; | ||
| } | ||
|
|
||
| export class LocalCfnLintExecutor { | ||
| private readonly log = LoggerFactory.getLogger(LocalCfnLintExecutor); | ||
|
|
||
| constructor(private readonly cfnLintPath: string) {} | ||
|
|
||
| async lintTemplate( | ||
| content: string, | ||
| uri: string, | ||
| fileType: CloudFormationFileType, | ||
| ): Promise<PublishDiagnosticsParams[]> { | ||
| // Write content to temporary file | ||
| const tempFile = join( | ||
| tmpdir(), | ||
| `cfn-lint-${Date.now()}.${fileType === CloudFormationFileType.Template ? 'yaml' : 'json'}`, | ||
| ); | ||
|
|
||
| try { | ||
| await writeFile(tempFile, content, 'utf8'); | ||
| return await this.lintFile(tempFile, uri, fileType); | ||
| } finally { | ||
| try { | ||
| await unlink(tempFile); | ||
| } catch { | ||
| // Ignore cleanup errors | ||
| } | ||
| } | ||
| } | ||
|
|
||
| async lintFile( | ||
| filePath: string, | ||
| uri: string, | ||
| fileType: CloudFormationFileType, | ||
| workspaceRoot?: string, | ||
| ): Promise<PublishDiagnosticsParams[]> { | ||
| const rawDiagnostics = await this.executeCfnLint(filePath, workspaceRoot); | ||
| return this.convertToLspFormat(rawDiagnostics, uri); | ||
| } | ||
|
|
||
| private async executeCfnLint(filePath: string, workspaceRoot?: string): Promise<CfnLintDiagnostic[]> { | ||
| return await new Promise((resolve, reject) => { | ||
| const args = ['--format', 'json', filePath]; | ||
| const child = spawn(this.cfnLintPath, args, { | ||
| stdio: ['ignore', 'pipe', 'pipe'], | ||
| cwd: workspaceRoot, | ||
| }); | ||
|
|
||
| let stdout = ''; | ||
| let stderr = ''; | ||
|
|
||
| child.stdout?.on('data', (data: Buffer) => { | ||
| stdout += data.toString(); | ||
| }); | ||
|
|
||
| child.stderr?.on('data', (data: Buffer) => { | ||
| stderr += data.toString(); | ||
| }); | ||
|
|
||
| child.on('close', (code) => { | ||
| try { | ||
| if (code === 0 || code === 2) { | ||
| // 0 = no issues, 2 = issues found | ||
| const diagnostics: CfnLintDiagnostic[] = stdout.trim() | ||
| ? (JSON.parse(stdout) as CfnLintDiagnostic[]) | ||
| : []; | ||
| resolve(diagnostics); | ||
| } else { | ||
| reject(new Error(`cfn-lint exited with code ${code}: ${stderr}`)); | ||
| } | ||
| } catch (error) { | ||
| reject(new Error(`Failed to parse cfn-lint output: ${extractErrorMessage(error)}`)); | ||
| } | ||
| }); | ||
|
|
||
| child.on('error', (error) => { | ||
| reject(new Error(`Failed to execute cfn-lint: ${extractErrorMessage(error)}`)); | ||
| }); | ||
| }); | ||
| } | ||
|
|
||
| private convertToLspFormat(diagnostics: CfnLintDiagnostic[], uri: string): PublishDiagnosticsParams[] { | ||
| if (!diagnostics || diagnostics.length === 0) { | ||
| return []; | ||
| } | ||
|
|
||
| const lspDiagnostics = diagnostics.map((item) => ({ | ||
| severity: this.convertSeverity(item.Level), | ||
| range: { | ||
| start: { | ||
| line: Math.max(0, (item.Location?.Start?.LineNumber || 1) - 1), | ||
| character: Math.max(0, (item.Location?.Start?.ColumnNumber || 1) - 1), | ||
| }, | ||
| end: { | ||
| line: Math.max(0, (item.Location?.End?.LineNumber || 1) - 1), | ||
| character: Math.max(0, (item.Location?.End?.ColumnNumber || 1) - 1), | ||
| }, | ||
| }, | ||
| message: item.Message || 'Unknown cfn-lint error', | ||
| source: 'cfn-lint', | ||
| code: item.Rule?.Id || 'unknown', | ||
| })); | ||
|
|
||
| return [{ uri, diagnostics: lspDiagnostics }]; | ||
| } | ||
|
|
||
| private convertSeverity(level: string): DiagnosticSeverity { | ||
| switch (level) { | ||
| case 'Error': { | ||
| return DiagnosticSeverity.Error; | ||
| } | ||
| case 'Warning': { | ||
| return DiagnosticSeverity.Warning; | ||
| } | ||
| case 'Info': { | ||
| return DiagnosticSeverity.Information; | ||
| } | ||
| default: { | ||
| return DiagnosticSeverity.Information; | ||
| } | ||
| } | ||
| } | ||
| } |
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If settings change while LSP is running, does the PyodideWorkerManager need to be shutdown?