class Cocaine::CommandLine::ProcessRunner

Public Class Methods

available?() click to toggle source
# File lib/cocaine/command_line/runners/process_runner.rb, line 5
def self.available?
  Process.respond_to?(:spawn)
end
supported?() click to toggle source
# File lib/cocaine/command_line/runners/process_runner.rb, line 9
def self.supported?
  available? && !Cocaine::CommandLine.java?
end

Public Instance Methods

call(command, env = {}, options = {}) click to toggle source
# File lib/cocaine/command_line/runners/process_runner.rb, line 17
def call(command, env = {}, options = {})
  input, output = IO.pipe
  options[:out] = output
  with_modified_environment(env) do
    pid = spawn(env, command, options)
    output.close
    result = input.read
    waitpid(pid)
    input.close
    result
  end
end
supported?() click to toggle source
# File lib/cocaine/command_line/runners/process_runner.rb, line 13
def supported?
  self.class.supported?
end

Private Instance Methods

spawn(*args) click to toggle source
# File lib/cocaine/command_line/runners/process_runner.rb, line 32
def spawn(*args)
  Process.spawn(*args)
end
waitpid(pid) click to toggle source
# File lib/cocaine/command_line/runners/process_runner.rb, line 36
def waitpid(pid)
  Process.waitpid(pid)
rescue Errno::ECHILD
  # In JRuby, waiting on a finished pid raises.
end
with_modified_environment(env, &block) click to toggle source
# File lib/cocaine/command_line/runners/process_runner.rb, line 42
def with_modified_environment(env, &block)
  ClimateControl.modify(env, &block)
end