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#
# Author:: AJ Christensen (<aj@opscode.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
require 'chef/config'
require 'chef/exceptions'
require 'chef/log'
require 'mixlib/cli'
class Chef::Application
include Mixlib::CLI
def initialize
super
trap("TERM") do
Chef::Application.fatal!("SIGTERM received, stopping", 1)
end
trap("INT") do
Chef::Application.fatal!("SIGINT received, stopping", 2)
end
trap("HUP") do
Chef::Log.info("SIGHUP received, reconfiguring")
reconfigure
end
at_exit do
# tear down the logger
end
end
# Reconfigure the application. You'll want to override and super this method.
def reconfigure
configure_chef
configure_logging
end
# Get this party started
def run
reconfigure
setup_application
run_application
end
# Parse the configuration file
def configure_chef
parse_options
Chef::Config.from_file(config[:config_file]) if !config[:config_file].nil? && File.exists?(config[:config_file]) && File.readable?(config[:config_file])
Chef::Config.merge!(config)
end
# Initialize and configure the logger
def configure_logging
Chef::Log.init(Chef::Config[:log_location])
Chef::Log.level(Chef::Config[:log_level])
end
# Called prior to starting the application, by the run method
def setup_application
raise Chef::Exceptions::Application, "#{self.to_s}: you must override setup_application"
end
# Actually run the application
def run_application
raise Chef::Exceptions::Application, "#{self.to_s}: you must override run_application"
end
class << self
# Log a fatal error message to both STDERR and the Logger, exit the application
def fatal!(msg, err = -1)
STDERR.puts("FATAL: #{msg}")
Chef::Log.fatal(msg)
Process.exit err
end
def exit!(msg, err = -1)
Chef::Log.debug(msg)
Process.exit err
end
end
end