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docker update for code execution #11

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Merged
freakythunder merged 1 commit into from
Feb 7, 2025
Merged

docker update for code execution #11

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4 changes: 4 additions & 0 deletions combined.log
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Original file line number Diff line number Diff line change
Expand Up @@ -323,3 +323,7 @@
{"level":"info","message":"Initial MongoDB connection established","timestamp":"2025-01-30T10:34:09.640Z"}
{"level":"info","message":"Server running on port 5000","timestamp":"2025-01-30T10:34:09.647Z"}
{"level":"info","message":"MongoDB disconnected","timestamp":"2025-01-30T11:15:21.609Z"}
{"level":"info","message":"Initial MongoDB connection established","timestamp":"2025-01-31T05:13:24.194Z"}
{"level":"info","message":"Server running on port 5000","timestamp":"2025-01-31T05:13:24.200Z"}
{"level":"info","message":"Initial MongoDB connection established","timestamp":"2025-01-31T08:29:46.579Z"}
{"level":"info","message":"Server running on port 5000","timestamp":"2025-01-31T08:29:46.588Z"}
245 changes: 86 additions & 159 deletions src/services/codeExecutionService.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,191 +5,118 @@ const crypto = require('crypto');
const os = require('os');
const tempDir = os.tmpdir();

exports.execute = async (code, language, input = '') => {
return new Promise((resolve, reject) => {
const uniqueId = crypto.randomBytes(16).toString('hex');
let tempFilePath;
let executionCommand;
let cleanupFiles = [];
let isCompiledLanguage = false;

switch (language.toLowerCase()) {
case 'python':
tempFilePath = path.join(tempDir, `temp_${uniqueId}.py`);
executionCommand = 'python';
cleanupFiles.push(tempFilePath);
break;

case 'javascript':
case 'js':
tempFilePath = path.join(tempDir, `temp_${uniqueId}.js`);
executionCommand = 'node';
cleanupFiles.push(tempFilePath);
break;

case 'java':
isCompiledLanguage = true;
const javaDir = path.join(tempDir, `java_${uniqueId}`);
fs.mkdirSync(javaDir);
tempFilePath = path.join(javaDir, 'Main.java');
cleanupFiles.push(javaDir);
break;

case 'cpp':
case 'c++':
isCompiledLanguage = true;
tempFilePath = path.join(tempDir, `temp_${uniqueId}.cpp`);
const executablePath = path.join(tempDir, `temp_${uniqueId}_exe`);
cleanupFiles.push(tempFilePath, executablePath);
break;

default:
return reject(new Error(`Unsupported language: ${language}`));
}

// Write code to file for all languages
fs.writeFileSync(tempFilePath, code);

if (isCompiledLanguage) {
switch (language.toLowerCase()) {
case 'java':
handleJavaExecution(tempFilePath, input, resolve, reject, cleanupFiles);
break;

case 'cpp':
case 'c++':
handleCppExecution(tempFilePath, input, resolve, reject, cleanupFiles);
break;
}
} else {
// Handle interpreted languages
const childProcess = spawn(executionCommand, [tempFilePath], { stdio: ['pipe', 'pipe', 'pipe'] });

let output = '';
let errorOutput = '';

childProcess.stdout.on('data', (data) => output += data.toString());
childProcess.stderr.on('data', (data) => errorOutput += data.toString());

childProcess.on('close', (code) => {
cleanup(cleanupFiles);
if (code !== 0) {
return reject(new Error(errorOutput || 'Process exited with an error.'));
}
resolve({ output: output.trim() });
});

if (input) {
childProcess.stdin.write(input + '\n');
childProcess.stdin.end();
}
}
});
// Configuration
const DOCKER_IMAGES = {
python: 'python:3-slim',
javascript: 'node:18-slim',
java: 'openjdk:17-jdk-slim',
cpp: 'gcc:latest'
};

// Java Execution Handler
function handleJavaExecution(javaPath, input, resolve, reject, cleanupFiles) {
const javaDir = path.dirname(javaPath);
let javaCode = fs.readFileSync(javaPath, 'utf-8');
const EXECUTION_TIMEOUT = 10000; // 10 seconds

// Extract the public class name using a regex
const classNameMatch = javaCode.match(/public\s+class\s+([A-Za-z_][A-Za-z0-9_]*)/);
if (!classNameMatch) {
cleanup(cleanupFiles);
return reject(new Error('No public class found in Java code.'));
exports.execute = async (code, language, input = '') => {
const lang = language.toLowerCase();
const uniqueId = crypto.randomBytes(16).toString('hex');
const tempFile = path.join(tempDir, `code_${uniqueId}`);

try {
fs.writeFileSync(tempFile, code);

const { command, args } = buildDockerCommand(lang, tempFile);
const result = await runDockerContainer(command, args, input);

return { output: result };
} catch (error) {
throw new Error(error.message);
} finally {
cleanup([tempFile]);
}
};

const className = classNameMatch[1]; // Extracted class name
const newJavaPath = path.join(javaDir, `${className}.java`);
function buildDockerCommand(lang, filePath) {
const volumeMount = `-v ${filePath}:/code`;

// Rename the Java file to match the class name
fs.renameSync(javaPath, newJavaPath);

const compileProcess = spawn('javac', [newJavaPath], { cwd: javaDir });

let compileError = '';
compileProcess.stderr.on('data', (data) => compileError += data.toString());

compileProcess.on('close', (compileCode) => {
if (compileCode !== 0) {
cleanup(cleanupFiles);
return reject(new Error(compileError || 'Java compilation failed'));
}
switch(lang) {
case 'python':
return {
command: 'docker',
args: ['run', '--rm', volumeMount, DOCKER_IMAGES.python, 'python', '/code']
};

case 'javascript':
case 'js':
return {
command: 'docker',
args: ['run', '--rm', volumeMount, DOCKER_IMAGES.javascript, 'node', '/code']
};

case 'java':
return {
command: 'docker',
args: [
'run', '--rm', volumeMount,
DOCKER_IMAGES.java,
'sh', '-c', 'javac /code && java -cp / $(basename /code .java)'
]
};

case 'cpp':
case 'c++':
return {
command: 'docker',
args: [
'run', '--rm', volumeMount,
DOCKER_IMAGES.cpp,
'sh', '-c', 'g++ -o /app /code && /app'
]
};

default:
throw new Error(`Unsupported language: ${lang}`);
}
}

const executeProcess = spawn('java', ['-cp', javaDir, className], { cwd: javaDir, stdio: ['pipe', 'pipe', 'pipe'] });
async function runDockerContainer(command, args, input) {
return new Promise((resolve, reject) => {
const child = spawn(command, args, { stdio: ['pipe', 'pipe', 'pipe'] });
let output = '';
let errorOutput = '';

executeProcess.stdout.on('data', (data) => output += data.toString());
executeProcess.stderr.on('data', (data) => errorOutput += data.toString());

executeProcess.on('close', (code) => {
cleanup(cleanupFiles);
if (code !== 0) {
reject(new Error(errorOutput || 'Java execution failed'));
} else {
resolve({ output: output.trim() });
}
});
let error = '';
let timeout = setTimeout(() => {
child.kill();
reject(new Error('Execution timed out'));
}, EXECUTION_TIMEOUT);

// Handle input
if (input) {
executeProcess.stdin.write(input + '\n');
executeProcess.stdin.end();
child.stdin.write(input + '\n');
child.stdin.end();
}
});
}


// C++ Execution Handler
function handleCppExecution(cppPath, input, resolve, reject, cleanupFiles) {
const executablePath = cppPath.replace('.cpp', '_exe');
const compileProcess = spawn('g++', [cppPath, '-o', executablePath]);

let compileError = '';
compileProcess.stderr.on('data', (data) => compileError += data.toString());
// Collect output
child.stdout.on('data', (data) => output += data.toString());
child.stderr.on('data', (data) => error += data.toString());

compileProcess.on('close', (compileCode) => {
if (compileCode !== 0) {
cleanup(cleanupFiles);
return reject(new Error(compileError || 'C++ compilation failed'));
}

const executeProcess = spawn(executablePath, [], { stdio: ['pipe', 'pipe', 'pipe'] });
let output = '';
let errorOutput = '';

executeProcess.stdout.on('data', (data) => output += data.toString());
executeProcess.stderr.on('data', (data) => errorOutput += data.toString());

executeProcess.on('close', (code) => {
cleanup(cleanupFiles);
// Handle completion
child.on('close', (code) => {
clearTimeout(timeout);
if (code !== 0) {
reject(new Error(errorOutput || 'C++ execution failed'));
reject(new Error(error || 'Container execution failed'));
} else {
resolve({ output: output.trim() });
resolve(output.trim());
}
});

if (input) {
executeProcess.stdin.write(input + '\n');
executeProcess.stdin.end();
}
});
}

// Cleanup function
function cleanup(files) {
files.forEach(file => {
try {
if (fs.existsSync(file)) {
if (fs.lstatSync(file).isDirectory()) {
fs.rmSync(file, { recursive: true, force: true });
} else {
fs.unlinkSync(file);
}
fs.unlinkSync(file);
}
} catch (e) {
console.error('Error cleaning up file:', e);
console.error('Cleanup error:', e);
}
});
}
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