Class: PerconaMigrator::Command

Inherits:

Object

• Object
• PerconaMigrator::Command

Defined in:

lib/percona_migrator/command.rb

Overview

Executes the given command returning it’s status and errors

Constant Summary

COMMAND_NOT_FOUND =

127

Instance Method Summary

• #initialize(command_line, error_log_path, logger) ⇒ Command constructor

  Constructor.

• #run ⇒ Process::Status

  Executes the command returning its status.

Constructor Details

#initialize(command_line, error_log_path, logger) ⇒ Command

Constructor

Parameters:

• command_line (String)
• error_log_path (String)
• logger (#write_no_newline)

# File 'lib/percona_migrator/command.rb', line 11

def initialize(command_line, error_log_path, logger)
  @command_line = command_line
  @error_log_path = error_log_path
  @logger = logger
end

Instance Method Details

#run ⇒ Process::Status

Executes the command returning its status. It also prints its stdout to the logger and its stderr to the file specified in error_log_path.

Returns:

• (Process::Status)

Raises:

• (NoStatusError) —

  if the spawned process’ status can’t be retrieved

• (SignalError) —

  if the spawned process received a signal

• (CommandNotFoundError) —

  if pt-online-schema-change can’t be found

# File 'lib/percona_migrator/command.rb', line 25

def run
  log_deprecations
  log_started

  run_in_process

  log_finished

  validate_status!
  status
end