c0e3907ba0
It's really ugly to have to keep repeating File.dirname(__FILE__), so we use a temporary variable, even in the case of a single require. This minimises long "requires" lines and "requires" statements with needing line-breaks, and should make search-and-replace a bit easier if we later want to migrate to __dir__ (Ruby >= 2.0) or require_relative. http://stackoverflow.com/questions/4333286/ruby-require-vs-require-relative-best-practice-to-workaround-running-in-both I've deliberately rejected the pattern: require File.expand_path('../relative/path', __FILE__) because it relies on inconsistent semantics and inconsistent documentation in File.expand_path: http://stackoverflow.com/questions/4333286/ruby-require-vs-require-relative-best-practice-to-workaround-running-in-both#comment34147297_4333552
124 lines
3.7 KiB
Ruby
124 lines
3.7 KiB
Ruby
# Author:: Robert Choi
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# Cookbook Name:: pacemaker
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# Provider:: primitive
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#
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# Copyright:: 2013, Robert Choi
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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this_dir = ::File.dirname(__FILE__)
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require ::File.expand_path('../libraries/pacemaker', this_dir)
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require ::File.expand_path('../libraries/chef/mixin/pacemaker', this_dir)
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include Chef::Mixin::Pacemaker::RunnableResource
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action :create do
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name = new_resource.name
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if @current_resource_definition.nil?
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create_resource(name)
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else
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if @current_resource.agent != new_resource.agent
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raise "Existing %s has agent '%s' " \
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"but recipe wanted '%s'" % \
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[ @current_cib_object, @current_resource.agent, new_resource.agent ]
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end
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maybe_modify_resource(name)
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end
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end
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action :delete do
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delete_runnable_resource
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end
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action :start do
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start_runnable_resource
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end
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action :stop do
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stop_runnable_resource
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end
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def cib_object_class
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::Pacemaker::Resource::Primitive
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end
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def load_current_resource
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standard_load_current_resource
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end
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def init_current_resource
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name = @new_resource.name
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@current_resource = Chef::Resource::PacemakerPrimitive.new(name)
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@current_cib_object.copy_attrs_to_chef_resource(@current_resource,
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:agent, :params, :meta)
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end
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def create_resource(name)
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standard_create_resource
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end
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def maybe_modify_resource(name)
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Chef::Log.info "Checking existing #{@current_cib_object} for modifications"
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cmds = []
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desired_primitive = cib_object_class.from_chef_resource(new_resource)
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if desired_primitive.op_string != @current_cib_object.op_string
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Chef::Log.debug "op changed from [#{@current_cib_object.op_string}] to [#{desired_primitive.op_string}]"
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cmds = [desired_primitive.reconfigure_command]
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else
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maybe_configure_params(name, cmds, :params)
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maybe_configure_params(name, cmds, :meta)
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end
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cmds.each do |cmd|
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execute cmd do
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action :nothing
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end.run_action(:run)
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end
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new_resource.updated_by_last_action(true) unless cmds.empty?
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end
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def maybe_configure_params(name, cmds, data_type)
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configure_cmd_prefix = "crm_resource --resource #{name}"
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new_resource.send(data_type).each do |param, new_value|
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current_value = @current_resource.send(data_type)[param]
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# Value from recipe might be a TrueClass instance, but the same
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# value would be retrieved from the cluster resource as the String
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# "true". So we force a string-wise comparison to adhere to
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# Postel's Law whilst minimising activity on the Chef client node.
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if current_value.to_s == new_value.to_s
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Chef::Log.info("#{name}'s #{param} #{data_type} didn't change")
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else
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Chef::Log.info("#{name}'s #{param} #{data_type} changed from #{current_value} to #{new_value}")
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cmd = configure_cmd_prefix + %' --set-parameter "#{param}" --parameter-value "#{new_value}"'
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cmd += " --meta" if data_type == :meta
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cmds << cmd
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end
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end
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@current_resource.send(data_type).each do |param, value|
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unless new_resource.send(data_type).has_key? param
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Chef::Log.info("#{name}'s #{param} #{data_type} was removed")
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cmd = configure_cmd_prefix + %' --delete-parameter "#{param}"'
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cmd += " --meta" if data_type == :meta
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cmds << cmd
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end
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end
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end
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