Module: Omnibus::Util

Included in:
BuildVersion, Builder, Config, Fetcher, Fetcher, GitCache, GitRepository, HealthCheck, Packager::Base, Project
Defined in:
lib/omnibus/util.rb

Constant Summary collapse

SHELLOUT_OPTIONS =

The default shellout options.

{
  log_level: :internal,
  timeout: 7200, # 2 hours
  environment: {},
}.freeze

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 


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# File 'lib/omnibus/util.rb', line 21

def self.included(base)
  # This module requires logging is also available
  base.send(:include, Logging)
end

Instance Method Details

#copy_file(source, destination) ⇒ String

Copy the source file to the destination.


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# File 'lib/omnibus/util.rb', line 165

def copy_file(source, destination)
  log.debug(log_key) { "Copying `#{source}' to `#{destination}'" }
  FileUtils.cp(source, destination)
  destination
end

#create_directory(*paths) ⇒ String

Create a directory at the given path.


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# File 'lib/omnibus/util.rb', line 133

def create_directory(*paths)
  path = File.join(*paths)
  log.debug(log_key) { "Creating directory `#{path}'" }
  FileUtils.mkdir_p(path)
  path
end

#create_file(*paths, &block) ⇒ String

Create a file at the given path. If a block is given, the contents of the block are written to the file. If the block is not given, the file is simply “touched”.


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# File 'lib/omnibus/util.rb', line 198

def create_file(*paths, &block)
  path = File.join(*paths)
  log.debug(log_key) { "Creating file `#{path}'" }

  FileUtils.mkdir_p(File.dirname(path))

  if block
    File.open(path, 'wb') { |f| f.write(block.call) }
  else
    FileUtils.touch(path)
  end

  path
end

#create_link(a, b) ⇒ Object

Create a symlink from a to b


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# File 'lib/omnibus/util.rb', line 219

def create_link(a, b)
  log.debug(log_key) { "Linking `#{a}' to `#{b}'" }
  FileUtils.ln_s(a, b)
end

#remove_directory(*paths) ⇒ String

Remove the directory at the given path.


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# File 'lib/omnibus/util.rb', line 149

def remove_directory(*paths)
  path = File.join(*paths)
  log.debug(log_key) { "Remove directory `#{path}'" }
  FileUtils.rm_rf(path)
  path
end

#remove_file(*paths) ⇒ String

Remove the file at the given path.


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# File 'lib/omnibus/util.rb', line 180

def remove_file(*paths)
  path = File.join(*paths)
  log.debug(log_key) { "Removing file `#{path}'" }
  FileUtils.rm_f(path)
  path
end

#shellout(command, options = {}) ⇒ Mixlib::ShellOut #shellout(command_fragments, options = {}) ⇒ Mixlib::ShellOut

Shells out and runs command.


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# File 'lib/omnibus/util.rb', line 52

def shellout(*args)
  options = args.last.kind_of?(Hash) ? args.pop : {}
  options = SHELLOUT_OPTIONS.merge(options)

  # Grab the log_level
  log_level = options.delete(:log_level)

  # Set the live stream if one was not given
  options[:live_stream] ||= log.live_stream(:internal)

  # Since Mixlib::ShellOut supports :environment and :env, we want to
  # standardize here
  if options[:env]
    options[:environment] = options.fetch(:environment, {}).merge(options[:env])
  end

  # Log any environment options given
  unless options[:environment].empty?
    log.public_send(log_level, log_key)  { 'Environment:' }
    options[:environment].sort.each do |key, value|
      log.public_send(log_level, log_key)  { "  #{key}=#{value.inspect}" }
    end
  end

  # Log the actual command
  log.public_send(log_level, log_key) { "$ #{args.join(' ')}" }

  cmd = Mixlib::ShellOut.new(*args, options)
  cmd.environment['HOME'] = '/tmp' unless ENV['HOME']
  cmd.run_command
  cmd
end

#shellout!(*args) ⇒ Object

Similar to shellout method except it raises an exception if the command fails.

Raises:

See Also:


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# File 'lib/omnibus/util.rb', line 96

def shellout!(*args)
  cmd = shellout(*args)
  cmd.error!
  cmd
rescue Mixlib::ShellOut::ShellCommandFailed
  raise CommandFailed.new(cmd)
rescue Mixlib::ShellOut::CommandTimeout
  raise CommandTimeout.new(cmd)
end

#windows_safe_path(*pieces) ⇒ String

Convert the given path to be appropiate for shelling out on Windows.


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# File 'lib/omnibus/util.rb', line 114

def windows_safe_path(*pieces)
  path = File.join(*pieces)

  if File::ALT_SEPARATOR
    path.gsub(File::SEPARATOR, File::ALT_SEPARATOR)
  else
    path
  end
end