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41 lines
1.1 KiB
CoffeeScript
41 lines
1.1 KiB
CoffeeScript
_ = require("underscore")
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logger = require("logger-sharelatex")
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child_process = require('child_process')
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# execute a command in the same way as 'exec' but with a timeout that
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# kills all child processes
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#
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# we spawn the command with 'detached:true' to make a new process
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# group, then we can kill everything in that process group.
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module.exports = (command, options, callback = (err, stdout, stderr) ->) ->
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[cmd, args...] = command.split(' ')
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child = child_process.spawn cmd, args, {detached:true}
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stdout = ""
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stderr = ""
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cleanup = _.once (err) ->
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clearTimeout killTimer if killTimer?
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callback err, stdout, stderr
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if options.timeout?
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killTimer = setTimeout () ->
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try
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process.kill -child.pid, options.killSignal || "SIGTERM"
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catch error
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logger.log process: child.pid, kill_error: error, "error killing process"
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, options.timeout
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child.on 'close', (code, signal) ->
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err = if code then new Error("exit status #{code}") else signal
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cleanup err
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child.on 'error', (err) ->
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cleanup err
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child.stdout.on 'data', (chunk) ->
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stdout += chunk
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child.stderr.on 'data', (chunk) ->
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stderr += chunk
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