Class: Cocaine::CommandLine

Inherits:
Object
  • Object
show all
Defined in:
lib/cocaine/command_line.rb

Class Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(binary, params = "", options = {}) ⇒ CommandLine

Returns a new instance of CommandLine.



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# File 'lib/cocaine/command_line.rb', line 7

def initialize(binary, params = "", options = {})
  @binary            = binary.dup
  @params            = params.dup
  @options           = options.dup
  @logger            = @options.delete(:logger) || self.class.logger
  @swallow_stderr    = @options.delete(:swallow_stderr)
  @expected_outcodes = @options.delete(:expected_outcodes)
  @expected_outcodes ||= [0]
end

Class Attribute Details

.logger ⇒ Object

Returns the value of attribute logger.



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# File 'lib/cocaine/command_line.rb', line 4

def logger
  @logger
end

.path ⇒ Object

Returns the value of attribute path.



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# File 'lib/cocaine/command_line.rb', line 4

def path
  @path
end

Instance Method Details

#command ⇒ Object 



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# File 'lib/cocaine/command_line.rb', line 17

def command
  cmd = []
  cmd << @binary
  cmd << interpolate(@params, @options)
  cmd << bit_bucket if @swallow_stderr
  cmd.join(" ").strip
end

#run ⇒ Object 



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# File 'lib/cocaine/command_line.rb', line 25

def run
  output = ''
  begin
    with_modified_path do
      @logger.info("\e[32mCommand\e[0m :: #{command}") if @logger
      output = self.class.send(:'`', command)
    end
  rescue Errno::ENOENT
    raise Cocaine::CommandNotFoundError
  end
  if $?.exitstatus == 127
    raise Cocaine::CommandNotFoundError
  end
  unless @expected_outcodes.include?($?.exitstatus)
    raise Cocaine::ExitStatusError, "Command '#{command}' returned #{$?.exitstatus}. Expected #{@expected_outcodes.join(", ")}"
  end
  output
end