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#
# Author:: Jay Mundrawala (<jdm@getchef.com>)
#
# Copyright:: 2014, Chef Software, Inc.
#
# 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/event_dispatch/base'
class Chef
module EventLoggers
class UnknownEventLogger < StandardError; end
class UnavailableEventLogger < StandardError; end
def self.event_loggers_by_name
@event_loggers_by_name ||= {}
end
def self.register(name, logger)
event_loggers_by_name[name.to_s] = logger
end
def self.by_name(name)
event_loggers_by_name[name]
end
def self.available_event_loggers
event_loggers_by_name.select do |key, val|
val.available?
end.keys
end
def self.new(name)
event_logger_class = by_name(name.to_s) or
raise UnknownEventLogger, "No event logger found for #{name} (available: #{available_event_loggers.join(', ')})"
raise UnavailableEventLogger unless available_event_loggers.include? name.to_s
event_logger_class.new
end
class Base < EventDispatch::Base
def self.short_name(name)
Chef::EventLoggers.register(name, self)
end
# Returns true if this implementation of EventLoggers can be used
def self.available?
false
end
end
end
end
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