Class: Management::RunScript

Inherits:
Command
  • Object
show all
Defined in:
lib/management/commands/run_script.rb

Instance Method Summary collapse

Methods inherited from Command

all, #cloud, command_name, #config, #get_env, #get_script, #get_server, #get_type, help_string, inherited

Instance Method Details

#call(server_name, script_name) ⇒ Object 



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# File 'lib/management/commands/run_script.rb', line 11

def call(server_name, script_name)
  server = get_server(server_name)
  script = get_script(script_name)

  server.private_key_path = config[:types][server.type.to_sym][:ssh_key_path]

  missing = missing_local_files(script)
  abort "The following files are missing:" + (["\n"] + missing).join("\n - ") if !missing.empty?

  script.each do |tuple|
    type, data = *tuple.first

    case type.to_sym
    when :copy
      copy_file(server, *data)
    when :run
      run_command(server, data)
    end

  end

end

#copy_file(server, local_path, remote_path, opts = nil) ⇒ Object 



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# File 'lib/management/commands/run_script.rb', line 34

def copy_file(server, local_path, remote_path, opts = nil)
  should_template = opts && opts[:template]
  custom_chown = opts && opts[:chown]

  puts "Copying #{local_path} -> #{remote_path}"

  Dir.mktmpdir('management-file-dir') do |file_tmpdir|

    # copy to the fake "remote" path locally
    remote_looking_path = File.join(file_tmpdir, remote_path)
    FileUtils.mkdir_p File.dirname(remote_looking_path)
    FileUtils.cp_r local_path, remote_looking_path, preserve: true

    # overwrite the fake "remote" file with its own templated contents if necessary
    if should_template
      new_contents = ERB.new(File.read(remote_looking_path)).result(binding)
      File.write(remote_looking_path, new_contents)
    end

    Dir.mktmpdir('management-tar-dir') do |tar_tmpdir|

      # zip this file up, starting from its absolute path
      local_tar_path = File.join(tar_tmpdir, "__management__.tar.gz")
      zip_relevant_files(file_tmpdir, local_tar_path)

      # copy tar file to remote and extract
      remote_tar_path = "/tmp/__management__.tar.gz"
      server.copy_file(local_tar_path, remote_tar_path)
      server.extract_tar(remote_tar_path)
      server.chown_r(remote_path, custom_chown) if custom_chown

    end

  end

end

#missing_local_files(script) ⇒ Object 



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# File 'lib/management/commands/run_script.rb', line 87

def missing_local_files(script)
  script.find_all do |tuple|
    type, data = *tuple.first
    if type == :copy
      local, remote = *data
      ! File.exists?(local)
    end
  end.map do |tuple|
    type, data = *tuple.first
    local, remote = *data
    local
  end
end

#relevant_files(at_dir) ⇒ Object 



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# File 'lib/management/commands/run_script.rb', line 101

def relevant_files(at_dir)
  abort unless at_dir.start_with? "/"

  Dir[File.join(at_dir, "**/*")].select do |path|
    File.file?(path) || (File.directory?(path) && Dir.entries(path) == [".", ".."])
  end.map do |path|
    path.slice! at_dir.end_with?("/") ? at_dir : "#{at_dir}/"
    "./#{path}"
  end
end

#run_command(server, cmd) ⇒ Object 



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# File 'lib/management/commands/run_script.rb', line 71

def run_command(server, cmd)
  puts "Running #{cmd}"

  result = server.ssh("#{cmd}").first

  if result.respond_to?(:status)
    puts
    puts "---------------------------"
    if result.status == 0
      puts "Success!"
    else
      puts "Failed. Exit code: #{result.status}"
    end
  end
end