124 lines
2.8 KiB
Ruby
124 lines
2.8 KiB
Ruby
require 'open3'
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module Pipeline::Util
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class ExternalCommand
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BLOCK_SIZE = 1024
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attr_accessor :cmd_string, :status, :stdout, :stderr, :suppress_output,
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:stderr_limit, :stdout_limit
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def initialize(cmd_string)
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@cmd_string = cmd_string
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@stdout_limit = -1
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@stderr_limit = -1
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end
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def call!
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call
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raise "Failed #{cmd_string}" unless status.success?
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end
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def call
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invoke_process
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puts "status: #{status}" unless suppress_output
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puts "stdout: #{stdout}" unless suppress_output
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puts "stderr: #{stderr}" unless suppress_output
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end
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def cmd
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if @timeout
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"/usr/bin/timeout -s 9 -k #{@timeout + 1} #{@timeout} #{cmd_string}"
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else
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cmd_string
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end
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end
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def success?
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status && status.success?
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end
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def killed?
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!! @killed
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end
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def exit_status
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status.exitstatus
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end
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def timeout=(timeout)
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@timeout = timeout
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end
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def report
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{
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cmd: cmd_string,
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success: success?,
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stdout: stdout,
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stderr: stderr
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}
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end
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private
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def invoke_process
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c = cmd
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captured_stdout = []
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captured_stderr = []
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stdout_size = 0
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stderr_size = 0
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puts "> #{c}" unless suppress_output
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Open3.popen3(c) do |_stdin, _stdout, _stderr, wait_thr|
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pid = wait_thr.pid
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_stdin.close_write
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begin
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files = [_stdout, _stderr]
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until files.find { |f| !f.eof }.nil? || @killed do
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ready = IO.select(files)
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if ready
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readable = ready[0]
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readable.each do |f|
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begin
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data = f.read_nonblock(BLOCK_SIZE)
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if f == _stdout
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unless @killed
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captured_stdout << data
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stdout_size += data.size
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if stdout_limit > 0 && stdout_size > stdout_limit
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Process.kill("KILL", wait_thr.pid)
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@killed = true
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end
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end
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end
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if f == _stderr
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unless @killed
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captured_stderr << data
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stderr_size += data.size
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if stderr_limit > 0 && stderr_size > stderr_limit
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Process.kill("KILL", wait_thr.pid)
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@killed = true
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end
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end
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end
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rescue EOFError => e
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end
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end
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end
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end
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rescue IOError => e
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puts "IOError: #{e}"
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ensure
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@stdout = captured_stdout.join
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@stderr = captured_stderr.join
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@status = wait_thr.value
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end
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end
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end
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end
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end
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