overleaf/services/clsi/app/js/LocalCommandRunner.js
Brian Gough 8e86f02c43 set encoding when reading from streams
using .toString() works most of the time but can lead to utf8 characters being
broken across chunk boundaries.

https://nodejs.org/api/stream.html#stream_readable_setencoding_encoding
2020-05-07 10:30:14 +01:00

91 lines
2.6 KiB
JavaScript

/* eslint-disable
camelcase,
handle-callback-err,
no-return-assign,
no-unused-vars,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
* decaffeinate suggestions:
* DS101: Remove unnecessary use of Array.from
* DS102: Remove unnecessary code created because of implicit returns
* DS207: Consider shorter variations of null checks
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
let CommandRunner
const { spawn } = require('child_process')
const logger = require('logger-sharelatex')
logger.info('using standard command runner')
module.exports = CommandRunner = {
run(project_id, command, directory, image, timeout, environment, callback) {
let key, value
if (callback == null) {
callback = function(error) {}
}
command = Array.from(command).map(arg =>
arg.toString().replace('$COMPILE_DIR', directory)
)
logger.log({ project_id, command, directory }, 'running command')
logger.warn('timeouts and sandboxing are not enabled with CommandRunner')
// merge environment settings
const env = {}
for (key in process.env) {
value = process.env[key]
env[key] = value
}
for (key in environment) {
value = environment[key]
env[key] = value
}
// run command as detached process so it has its own process group (which can be killed if needed)
const proc = spawn(command[0], command.slice(1), { cwd: directory, env })
let stdout = ''
proc.stdout.setEncoding('utf8').on('data', data => (stdout += data))
proc.on('error', function(err) {
logger.err(
{ err, project_id, command, directory },
'error running command'
)
return callback(err)
})
proc.on('close', function(code, signal) {
let err
logger.info({ code, signal, project_id }, 'command exited')
if (signal === 'SIGTERM') {
// signal from kill method below
err = new Error('terminated')
err.terminated = true
return callback(err)
} else if (code === 1) {
// exit status from chktex
err = new Error('exited')
err.code = code
return callback(err)
} else {
return callback(null, { stdout: stdout })
}
})
return proc.pid
}, // return process id to allow job to be killed if necessary
kill(pid, callback) {
if (callback == null) {
callback = function(error) {}
}
try {
process.kill(-pid) // kill all processes in group
} catch (err) {
return callback(err)
}
return callback()
}
}