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configurer.rb
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configurer.rb
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# The client for interacting with the puppetmaster config server.
require 'sync'
require 'timeout'
require 'puppet/network/http_pool'
require 'puppet/util'
require 'puppet/util/config_timeout'
class Puppet::Configurer
require 'puppet/configurer/fact_handler'
require 'puppet/configurer/plugin_handler'
extend Puppet::Util::ConfigTimeout
include Puppet::Configurer::FactHandler
include Puppet::Configurer::PluginHandler
# For benchmarking
include Puppet::Util
attr_reader :compile_time, :environment
# Provide more helpful strings to the logging that the Agent does
def self.to_s
"Puppet configuration client"
end
class << self
# Puppetd should only have one instance running, and we need a way
# to retrieve it.
attr_accessor :instance
include Puppet::Util
end
# How to lock instances of this class.
def self.lockfile_path
Puppet[:puppetdlockfile]
end
def execute_postrun_command
execute_from_setting(:postrun_command)
end
def execute_prerun_command
execute_from_setting(:prerun_command)
end
# Initialize and load storage
def init_storage
Puppet::Util::Storage.load
@compile_time ||= Puppet::Util::Storage.cache(:configuration)[:compile_time]
rescue => detail
Puppet.log_exception(detail, "Removing corrupt state file #{Puppet[:statefile]}: #{detail}")
begin
::File.unlink(Puppet[:statefile])
retry
rescue => detail
raise Puppet::Error.new("Cannot remove #{Puppet[:statefile]}: #{detail}")
end
end
# Just so we can specify that we are "the" instance.
def initialize
Puppet.settings.use(:main, :ssl, :agent)
self.class.instance = self
@running = false
@splayed = false
@environment = Puppet[:environment]
end
# Get the remote catalog, yo. Returns nil if no catalog can be found.
def retrieve_catalog(fact_options)
fact_options ||= {}
# First try it with no cache, then with the cache.
unless (Puppet[:use_cached_catalog] and result = retrieve_catalog_from_cache(fact_options)) or result = retrieve_new_catalog(fact_options)
if ! Puppet[:usecacheonfailure]
Puppet.warning "Not using cache on failed catalog"
return nil
end
result = retrieve_catalog_from_cache(fact_options)
end
return nil unless result
convert_catalog(result, @duration)
end
# Convert a plain resource catalog into our full host catalog.
def convert_catalog(result, duration)
catalog = result.to_ral
catalog.finalize
catalog.retrieval_duration = duration
catalog.write_class_file
catalog.write_resource_file
catalog
end
def get_facts(options)
download_plugins unless options[:skip_plugin_download]
if Puppet::Resource::Catalog.indirection.terminus_class == :rest
# This is a bit complicated. We need the serialized and escaped facts,
# and we need to know which format they're encoded in. Thus, we
# get a hash with both of these pieces of information.
#
# facts_for_uploading may set Puppet[:node_name_value] as a side effect
return facts_for_uploading
end
end
def prepare_and_retrieve_catalog(options, fact_options)
# set report host name now that we have the fact
options[:report].host = Puppet[:node_name_value]
unless catalog = (options.delete(:catalog) || retrieve_catalog(fact_options))
Puppet.err "Could not retrieve catalog; skipping run"
return
end
catalog
end
# Retrieve (optionally) and apply a catalog. If a catalog is passed in
# the options, then apply that one, otherwise retrieve it.
def apply_catalog(catalog, options)
report = options[:report]
report.configuration_version = catalog.version
report.environment = @environment
benchmark(:notice, "Finished catalog run") do
catalog.apply(options)
end
report.finalize_report
report
end
# The code that actually runs the catalog.
# This just passes any options on to the catalog,
# which accepts :tags and :ignoreschedules.
def run(options = {})
options[:report] ||= Puppet::Transaction::Report.new("apply")
report = options[:report]
init_storage
Puppet::Util::Log.newdestination(report)
begin
unless Puppet[:node_name_fact].empty?
fact_options = get_facts(options)
end
if node = Puppet::Node.indirection.find(Puppet[:node_name_value])
if node.environment.to_s != @environment
Puppet.warning "Local environment: \"#{@environment}\" doesn't match server specified node environment \"#{node.environment}\", changing."
@environment = node.environment.to_s
fact_options = nil
end
end
fact_options = get_facts(options) unless fact_options
unless catalog = prepare_and_retrieve_catalog(options, fact_options)
return nil
end
# Here we set the local environment based on what we get from the
# catalog. Since a change in environment means a change in facts, and
# facts may be used to determine which catalog we get, we need to
# rerun the process if the environment is changed.
tries = 0
while catalog.environment and not catalog.environment.empty? and catalog.environment != @environment
if tries > 3
raise Puppet::Error, "Catalog environment didn't stabilize after #{tries} fetches, aborting run"
end
Puppet.warning "Local environment: \"#{@environment}\" doesn't match server specified environment \"#{catalog.environment}\", restarting agent run with new environment"
@environment = catalog.environment
return nil unless catalog = prepare_and_retrieve_catalog(options, fact_options)
tries += 1
end
execute_prerun_command or return nil
apply_catalog(catalog, options)
report.exit_status
rescue => detail
Puppet.log_exception(detail, "Failed to apply catalog: #{detail}")
return nil
ensure
execute_postrun_command or return nil
end
ensure
# Make sure we forget the retained module_directories of any autoload
# we might have used.
Thread.current[:env_module_directories] = nil
Puppet::Util::Log.close(report)
send_report(report)
end
def send_report(report)
puts report.summary if Puppet[:summarize]
save_last_run_summary(report)
Puppet::Transaction::Report.indirection.save(report) if Puppet[:report]
rescue => detail
Puppet.log_exception(detail, "Could not send report: #{detail}")
end
def save_last_run_summary(report)
mode = Puppet.settings.setting(:lastrunfile).mode
Puppet::Util.replace_file(Puppet[:lastrunfile], mode) do |fh|
fh.print YAML.dump(report.raw_summary)
end
rescue => detail
Puppet.log_exception(detail, "Could not save last run local report: #{detail}")
end
private
def execute_from_setting(setting)
return true if (command = Puppet[setting]) == ""
begin
Puppet::Util::Execution.execute([command])
true
rescue => detail
Puppet.log_exception(detail, "Could not run command from #{setting}: #{detail}")
false
end
end
def retrieve_catalog_from_cache(fact_options)
result = nil
@duration = thinmark do
result = Puppet::Resource::Catalog.indirection.find(Puppet[:node_name_value], fact_options.merge(:ignore_terminus => true))
end
Puppet.notice "Using cached catalog"
result
rescue => detail
Puppet.log_exception(detail, "Could not retrieve catalog from cache: #{detail}")
return nil
end
def retrieve_new_catalog(fact_options)
result = nil
@duration = thinmark do
result = Puppet::Resource::Catalog.indirection.find(Puppet[:node_name_value], fact_options.merge(:ignore_cache => true))
end
result
rescue SystemExit,NoMemoryError
raise
rescue Exception => detail
Puppet.log_exception(detail, "Could not retrieve catalog from remote server: #{detail}")
return nil
end
end

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