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import { ActionHandler } from './action-handler.interface';
import {
ActionExecutionResult,
ToolMetadata,
} from '../llm-orchestration.interfaces';
import { ExecuteCodeArgsDto } from './dto/execute-code.args.dto';
import { plainToClass } from 'class-transformer';
import { validate } from 'class-validator';
import { generateToolCall, generateToolCallJson } from '../../utils';
import { execWithProcessGroupKill } from '../../utils/spawn-with-kill';
import * as path from 'path';
import * as fs from 'fs/promises';
import * as crypto from 'crypto';
@Injectable()
export class ExecuteCodeHandler implements ActionHandler {
readonly toolName = 'execute_code';
private readonly logger = new Logger(ExecuteCodeHandler.name);
private readonly projectRoot: string =
process.env.REPOBURG_PROJECT_PATH || process.cwd();
private readonly tempDir: string = path.join(
this.projectRoot,
'.repoburg',
'temp',
);
getMetadata(): ToolMetadata {
return {
name: this.toolName,
description: this.getDefinition(true),
arguments: [
{
name: 'code',
type: 'string',
description: 'The TypeScript code to execute.',
required: true,
},
],
};
}
/**
* Generates a tool call example in the specified format.
* @param toolCall - The tool call object to format
* @param useJson - If true, uses JSON format; otherwise uses XML-style format
* @returns Formatted tool call string
*/
private generateExample(
toolCall: Record<string, any>,
useJson: boolean = false,
): string {
return useJson
? generateToolCallJson(toolCall)
: generateToolCall(toolCall);
}
getDefinition(useJsonFormat: boolean = false): string {
const example = this.generateExample(
{
tool_name: this.toolName,
code: `
import * as fs from 'fs';
const files = fs.readdirSync('.');
console.log(files.join('\\n'));
`,
},
useJsonFormat,
);
const definition = `
-------------
### ${this.toolName}
Executes the provided TypeScript code in a temporary environment.
Useful for testing logic, verifying algorithms, or inspecting the system programmatically without permanently creating files.
The code is executed using 'npx tsx', so you can use ES modules and standard Node.js APIs.
CRITICAL: The code MUST be TypeScript. NEVER generate Python, Bash, or any other language.
#### Parameters
- "code": (string) The TypeScript code to execute.
#### Example
:${example}
-------------
`;
return `\n${definition.trim()}\n`;
}
async execute(
args: { [key: string]: any },
// eslint-disable-next-line @typescript-eslint/no-unused-vars
_context: any,
): Promise<ActionExecutionResult> {
const validatedArgs = plainToClass(ExecuteCodeArgsDto, args);
const errors = await validate(validatedArgs);
if (errors.length > 0) {
const errorMessages = errors
.map((err) => Object.values(err.constraints || {}).join(', '))
.join('; ');
return {
status: 'FAILURE',
summary: `Invalid arguments for ${this.toolName}.`,
error_message: errorMessages,
persisted_args: args,
execution_log: { output: '', error_message: errorMessages },
};
}
const { code } = validatedArgs;
const randomId = crypto.randomBytes(8).toString('hex');
const tempFilePath = path.join(this.tempDir, `exec-${randomId}.ts`);
let unifiedOutput: string;
let executionStatus: 'SUCCESS' | 'FAILURE' = 'SUCCESS';
let errorDetails: string | undefined;
try {
// Ensure temp directory exists
await fs.mkdir(this.tempDir, { recursive: true });
// Write code to temp file
await fs.writeFile(tempFilePath, code, 'utf-8');
// Execute the code
const result = await execWithProcessGroupKill(
`npx tsx "${tempFilePath}"`,
{
cwd: this.projectRoot,
timeout: 30000, // 30 seconds timeout
},
);
if (result.killed) {
executionStatus = 'FAILURE';
unifiedOutput = `EXECUTION TIMED OUT after 30000ms\n\nSTDOUT:\n${result.stdout || 'N/A'}\n\nSTDERR:\n${result.stderr || 'N/A'}`;
errorDetails = 'Code execution timed out after 30000ms.';
this.logger.warn(`Code execution timed out`);
} else if (result.exitCode !== 0) {
executionStatus = 'FAILURE';
unifiedOutput = `EXECUTION FAILED with exit code ${result.exitCode}\n\nSTDOUT:\n${result.stdout || 'N/A'}\n\nSTDERR:\n${result.stderr || 'N/A'}`;
errorDetails = `Code execution failed with exit code ${result.exitCode}.`;
this.logger.error(`Error executing code: ${unifiedOutput}`);
} else {
unifiedOutput =
result.stdout || result.stderr || '(Script produced no output)';
}
} catch (error) {
const execError = error as any;
executionStatus = 'FAILURE';
unifiedOutput = `EXECUTION FAILED: ${execError.message}\n\nSTDOUT:\n${
execError.stdout || 'N/A'
}\n\nSTDERR:\n${execError.stderr || 'N/A'}`;
errorDetails = execError.message;
this.logger.error(`Error executing code: ${unifiedOutput}`);
} finally {
// Clean up temp file
try {
await fs.unlink(tempFilePath);
} catch (cleanupErr) {
this.logger.warn(
`Failed to delete temp file ${tempFilePath}: ${cleanupErr}`,
);
}
}
return {
status: executionStatus,
summary:
executionStatus === 'SUCCESS'
? `Code executed successfully.`
: `Code execution failed.`,
error_message: errorDetails,
persisted_args: { content: code },
execution_log: {
output: unifiedOutput,
error_message: errorDetails || '',
},
};
}
}
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