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fix SIGPIPE and race condition causing dropping of final output ( "command not found" error) on cloudtops (#429)

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Olcan 2025-05-19 13:16:11 -07:00 committed by GitHub
parent 750649eb64
commit e1e59bf0cd
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GPG Key ID: B5690EEEBB952194
1 changed files with 10 additions and 7 deletions
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17
packages/server/src/tools/shell.ts
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@ -141,7 +141,7 @@ export class ShellTool extends BaseTool<ShellToolParams, ToolResult> {
let command = params.command.trim();
if (!command.endsWith('&')) command += ';';
// note the final echo is only to trigger the stderr handler below
command = `{ ${command} }; pgrep -g 0 >${tempFilePath} 2>&1; echo >&2`;
command = `{ ${command} }; pgrep -g 0 >${tempFilePath} 2>&1; ( trap '' PIPE ; echo >&2 )`;
// spawn command in specified directory (or project root if not specified)
const shell = spawn('bash', ['-c', command], {
@ -160,16 +160,19 @@ export class ShellTool extends BaseTool<ShellToolParams, ToolResult> {
let stderr = '';
shell.stderr.on('data', (data: Buffer) => {
// if the temporary file exists, close the streams and ignore any remaining output
// otherwise the streams can remain connected to background processes
let str = data.toString();
// if the temporary file exists, close the streams and finalize stdout/stderr
// otherwise these streams can delay termination ('close' event) until all background processes exit
if (fs.existsSync(tempFilePath)) {
shell.stdout.destroy();
shell.stderr.destroy();
} else {
const str = data.toString();
stderr += str;
output += str;
// exclude final \n, which should be from echo >&2 unless there are background processes writing to stderr
if (str.endsWith('\n')) {
str = str.slice(0, -1);
}
}
stderr += str;
output += str;
});
let error: Error | null = null;