Class: Chef::Client
- Inherits:
-
Object
- Object
- Chef::Client
- Extended by:
- Mixin::Deprecation
- Includes:
- Mixin::Deprecation, Mixin::PathSanity
- Defined in:
- lib/chef/client.rb
Overview
Chef::Client
The main object in a Chef run. Preps a Chef::Node and Chef::RunContext, syncs cookbooks if necessary, and triggers convergence.
Direct Known Subclasses
Constant Summary collapse
- STDOUT_FD =
This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future.
IO stream that will be used as ‘STDOUT’ for formatters. Formatters are configured during ‘initialize`, so this provides a convenience for setting alternative IO stream during tests.
STDOUT
- STDERR_FD =
This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future.
IO stream that will be used as ‘STDERR’ for formatters. Formatters are configured during ‘initialize`, so this provides a convenience for setting alternative IO stream during tests.
STDERR
Instance Attribute Summary collapse
-
#events ⇒ EventDispatch::Dispatcher
readonly
The event dispatcher for the Chef run, including any configured output formatters and event loggers.
-
#json_attribs ⇒ Hash
readonly
Extra node attributes that were applied to the node.
-
#ohai ⇒ Ohai::System
readonly
The ohai system used by this client.
-
#rest ⇒ Chef::ServerAPI
readonly
The rest object used to communicate with the Chef server.
-
#rest_clean(client_name = node_name, config = Chef::Config) ⇒ Object
readonly
private
Rest client for use by API reporters.
-
#run_status ⇒ Chef::RunStatus
readonly
The status of the Chef run.
-
#runner ⇒ Chef::Runner
The runner used to converge.
Class Method Summary collapse
-
.clear_notifications ⇒ Object
private
Clears all listeners for client run status events.
-
.run_completed_successfully_notifications ⇒ Array<Proc>
private
Listeners to be run when the client run completes successfully.
-
.run_failed_notifications ⇒ Array<Proc>
private
Listeners to be run when the client run fails.
-
.run_start_notifications ⇒ Array<Proc>
private
Listeners to be run when the client run starts.
-
.when_run_completes_successfully(¬ification_block) {|run_status| ... } ⇒ Object
Add a listener for the ‘client run success’ event.
-
.when_run_fails(¬ification_block) {|run_status| ... } ⇒ Object
Add a listener for the ‘client run failed’ event.
-
.when_run_starts(¬ification_block) {|run_status| ... } ⇒ Object
Add a listener for the ‘client run started’ event.
Instance Method Summary collapse
-
#build_node ⇒ Chef::Node
private
Mutates the ‘node` object to prepare it for the chef run.
- #configure_event_loggers ⇒ Object private
- #configure_formatters ⇒ Object private
-
#converge(run_context) ⇒ Object
private
Converges all compiled resources.
-
#converge_and_save(run_context) ⇒ Object
private
Converge the node via and then save it if successful.
- #default_formatter ⇒ Object private
-
#do_windows_admin_check ⇒ Object
private
Check if the user has Administrator privileges on windows.
-
#expanded_run_list ⇒ Chef::RunListExpansion
Expands the run list.
- #formatters_for_run ⇒ Object private
-
#initialize(json_attribs = nil, args = {}) ⇒ Client
constructor
Creates a new Chef::Client.
-
#load_node ⇒ Chef::Node
private
Instantiates a Chef::Node object, possibly loading the node’s prior state when using chef-client.
-
#node ⇒ Chef::Node
The node represented by this client.
- #node=(value) ⇒ Object
-
#node_name ⇒ Object
private
Figure out the node name we are working with.
-
#policy_builder ⇒ Chef::PolicyBuilder::Policyfile, Chef::PolicyBuilder::ExpandNodeObject
private
The PolicyBuilder strategy for figuring out run list and cookbooks.
-
#register(client_name = node_name, config = Chef::Config) ⇒ Chef::ServerAPI
private
Determine our private key and set up the connection to the Chef server.
-
#register_reporters ⇒ Object
private
Resource reporters send event information back to the chef server for processing.
-
#run ⇒ Object
Do a full run for this Chef::Client.
-
#run_audits(run_context) ⇒ Object
private
Run the audit phase.
-
#run_completed_successfully ⇒ Object
private
Callback to fire notifications that the run completed successfully.
-
#run_failed ⇒ Object
private
Callback to fire notifications that the Chef run failed.
-
#run_ohai ⇒ Object
private
Run ohai plugins.
-
#run_started ⇒ Object
private
Callback to fire notifications that the Chef run is starting.
-
#save_updated_node ⇒ Object
private
Save the updated node to Chef.
-
#setup_run_context ⇒ Object
private
Sets up the run context.
-
#sync_cookbooks ⇒ Object
private
Sync cookbooks to local cache.
Methods included from Mixin::Deprecation
deprecated_attr, deprecated_attr_reader, deprecated_attr_writer, deprecated_ivar
Methods included from Mixin::PathSanity
Constructor Details
#initialize(json_attribs = nil, args = {}) ⇒ Client
Creates a new Chef::Client.
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# File 'lib/chef/client.rb', line 156 def initialize(json_attribs = nil, args = {}) @json_attribs = json_attribs || {} @ohai = Ohai::System.new event_handlers = configure_formatters + configure_event_loggers event_handlers += Array(Chef::Config[:event_handlers]) @events = EventDispatch::Dispatcher.new(*event_handlers) # TODO it seems like a bad idea to be deletin' other peoples' hashes. @override_runlist = args.delete(:override_runlist) @specific_recipes = args.delete(:specific_recipes) @run_status = Chef::RunStatus.new(nil, events) if new_runlist = args.delete(:runlist) @json_attribs["run_list"] = new_runlist end end |
Instance Attribute Details
#events ⇒ EventDispatch::Dispatcher (readonly)
The event dispatcher for the Chef run, including any configured output formatters and event loggers.
TODO add stdout, stderr, and default formatters to Chef::Config so the defaults aren’t calculated here. Remove force_logger and force_formatter from this code.
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# File 'lib/chef/client.rb', line 143 def events @events end |
#json_attribs ⇒ Hash (readonly)
Extra node attributes that were applied to the node.
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# File 'lib/chef/client.rb', line 121 def json_attribs @json_attribs end |
#ohai ⇒ Ohai::System (readonly)
The ohai system used by this client.
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# File 'lib/chef/client.rb', line 92 def ohai @ohai end |
#rest ⇒ Chef::ServerAPI (readonly)
The rest object used to communicate with the Chef server.
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# File 'lib/chef/client.rb', line 99 def rest @rest end |
#rest_clean(client_name = node_name, config = Chef::Config) ⇒ Object (readonly)
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Rest client for use by API reporters. This rest client will not fail with an exception if it is fed non-UTF8 data.
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# File 'lib/chef/client.rb', line 107 def rest_clean @rest_clean end |
#run_status ⇒ Chef::RunStatus (readonly)
The status of the Chef run.
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# File 'lib/chef/client.rb', line 72 def run_status @run_status end |
#runner ⇒ Chef::Runner
The runner used to converge.
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# File 'lib/chef/client.rb', line 114 def runner @runner end |
Class Method Details
.clear_notifications ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Clears all listeners for client run status events.
Primarily for testing purposes.
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# File 'lib/chef/client.rb', line 834 def clear_notifications @run_start_notifications = nil @run_completed_successfully_notifications = nil @run_failed_notifications = nil end |
.run_completed_successfully_notifications ⇒ Array<Proc>
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Listeners to be run when the client run completes successfully.
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# File 'lib/chef/client.rb', line 862 def run_completed_successfully_notifications @run_completed_successfully_notifications ||= [] end |
.run_failed_notifications ⇒ Array<Proc>
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Listeners to be run when the client run fails.
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# File 'lib/chef/client.rb', line 873 def run_failed_notifications @run_failed_notifications ||= [] end |
.run_start_notifications ⇒ Array<Proc>
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Listeners to be run when the client run starts.
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# File 'lib/chef/client.rb', line 851 def run_start_notifications @run_start_notifications ||= [] end |
.when_run_completes_successfully(¬ification_block) {|run_status| ... } ⇒ Object
Add a listener for the ‘client run success’ event.
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# File 'lib/chef/client.rb', line 813 def when_run_completes_successfully(¬ification_block) run_completed_successfully_notifications << notification_block end |
.when_run_fails(¬ification_block) {|run_status| ... } ⇒ Object
Add a listener for the ‘client run failed’ event.
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# File 'lib/chef/client.rb', line 823 def when_run_fails(¬ification_block) run_failed_notifications << notification_block end |
.when_run_starts(¬ification_block) {|run_status| ... } ⇒ Object
Add a listener for the ‘client run started’ event.
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# File 'lib/chef/client.rb', line 803 def when_run_starts(¬ification_block) run_start_notifications << notification_block end |
Instance Method Details
#build_node ⇒ Chef::Node
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Mutates the ‘node` object to prepare it for the chef run.
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# File 'lib/chef/client.rb', line 482 def build_node policy_builder.build_node run_status.node = node node end |
#configure_event_loggers ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
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# File 'lib/chef/client.rb', line 382 def configure_event_loggers if Chef::Config.disable_event_logger [] else Chef::Config.event_loggers.map do |evt_logger| case evt_logger when Symbol Chef::EventLoggers.new(evt_logger) when Class evt_logger.new else end end end end |
#configure_formatters ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
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# File 'lib/chef/client.rb', line 351 def configure_formatters formatters_for_run.map do |formatter_name, output_path| if output_path.nil? Chef::Formatters.new(formatter_name, STDOUT_FD, STDERR_FD) else io = File.open(output_path, "a+") io.sync = true Chef::Formatters.new(formatter_name, io, io) end end end |
#converge(run_context) ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Converges all compiled resources.
Fires the converge_start, converge_complete and converge_failed events.
If the exception ‘:end_client_run_early` is thrown during convergence, it does not mark the run complete or failed, and returns `nil`
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# File 'lib/chef/client.rb', line 662 def converge(run_context) converge_exception = nil catch(:end_client_run_early) do begin events.converge_start(run_context) Chef::Log.debug("Converging node #{node_name}") @runner = Chef::Runner.new(run_context) @runner.converge events.converge_complete rescue Exception => e events.converge_failed(e) raise e if Chef::Config[:audit_mode] == :disabled converge_exception = e end end converge_exception end |
#converge_and_save(run_context) ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Converge the node via and then save it if successful.
We don’t want to change the old API on the ‘converge` method to have it perform saving. So we wrap it in this method. TODO given this seems to be pretty internal stuff, how badly do we need to split this stuff up?
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# File 'lib/chef/client.rb', line 702 def converge_and_save(run_context) converge_exception = converge(run_context) unless converge_exception begin save_updated_node rescue Exception => e raise e if Chef::Config[:audit_mode] == :disabled converge_exception = e end end converge_exception end |
#default_formatter ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
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# File 'lib/chef/client.rb', line 373 def default_formatter if (STDOUT.tty? && !Chef::Config[:force_logger]) || Chef::Config[:force_formatter] [:doc] else [:null] end end |
#do_windows_admin_check ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Check if the user has Administrator privileges on windows.
Throws an error if the user is not an admin, and ‘Chef::Config.fatal_windows_admin_check` is true.
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# File 'lib/chef/client.rb', line 776 def do_windows_admin_check if Chef::Platform.windows? Chef::Log.debug("Checking for administrator privileges....") if !has_admin_privileges? = "chef-client doesn't have administrator privileges on node #{node_name}." if Chef::Config[:fatal_windows_admin_check] Chef::Log.fatal() Chef::Log.fatal("fatal_windows_admin_check is set to TRUE.") raise Chef::Exceptions::WindowsNotAdmin, else Chef::Log.warn("#{} This might cause unexpected resource failures.") end else Chef::Log.debug("chef-client has administrator privileges on node #{node_name}.") end end end |
#expanded_run_list ⇒ Chef::RunListExpansion
Expands the run list.
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# File 'lib/chef/client.rb', line 759 def policy_builder. end |
#formatters_for_run ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
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# File 'lib/chef/client.rb', line 364 def formatters_for_run if Chef::Config.formatters.empty? [default_formatter] else Chef::Config.formatters end end |
#load_node ⇒ Chef::Node
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Instantiates a Chef::Node object, possibly loading the node’s prior state when using chef-client. Sets Chef.node to the new node.
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# File 'lib/chef/client.rb', line 466 def load_node policy_builder.load_node run_status.node = policy_builder.node Chef.set_node(policy_builder.node) node end |
#node ⇒ Chef::Node
The node represented by this client.
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# File 'lib/chef/client.rb', line 79 def node run_status.node end |
#node=(value) ⇒ Object
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# File 'lib/chef/client.rb', line 83 def node=(value) run_status.node = value end |
#node_name ⇒ Object
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# File 'lib/chef/client.rb', line 580 def node_name name = Chef::Config[:node_name] || ohai[:fqdn] || ohai[:machinename] || ohai[:hostname] Chef::Config[:node_name] = name raise Chef::Exceptions::CannotDetermineNodeName unless name name end |
#policy_builder ⇒ Chef::PolicyBuilder::Policyfile, Chef::PolicyBuilder::ExpandNodeObject
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
The PolicyBuilder strategy for figuring out run list and cookbooks.
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# File 'lib/chef/client.rb', line 523 def policy_builder @policy_builder ||= Chef::PolicyBuilder::Dynamic.new(node_name, ohai.data, json_attribs, override_runlist, events) end |
#register(client_name = node_name, config = Chef::Config) ⇒ Chef::ServerAPI
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Determine our private key and set up the connection to the Chef server.
Skips registration and fires the ‘skipping_registration` event if Chef::Config.client_key is unspecified or already exists.
If Chef::Config.client_key does not exist, we register the client with the Chef server and fire the registration_start and registration_completed events.
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# File 'lib/chef/client.rb', line 610 def register(client_name = node_name, config = Chef::Config) if !config[:client_key] events.skipping_registration(client_name, config) Chef::Log.debug("Client key is unspecified - skipping registration") elsif File.exists?(config[:client_key]) events.skipping_registration(client_name, config) Chef::Log.debug("Client key #{config[:client_key]} is present - skipping registration") else events.registration_start(node_name, config) Chef::Log.info("Client key #{config[:client_key]} is not present - registering") Chef::ApiClient::Registration.new(node_name, config[:client_key]).run events.registration_completed end # We now have the client key, and should use it from now on. @rest = Chef::ServerAPI.new(config[:chef_server_url], client_name: client_name, signing_key_filename: config[:client_key]) # force initialization of the rest_clean API object rest_clean(client_name, config) register_reporters rescue Exception => e # TODO this should probably only ever fire if we *started* registration. # Move it to the block above. # TODO: munge exception so a semantic failure message can be given to the # user events.registration_failed(client_name, e, config) raise end |
#register_reporters ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Resource reporters send event information back to the chef server for processing. Can only be called after we have a @rest object
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# File 'lib/chef/client.rb', line 411 def register_reporters [ Chef::ResourceReporter.new(rest_clean), Chef::Audit::AuditReporter.new(rest_clean), ].each do |r| events.register(r) end end |
#run ⇒ Object
Do a full run for this Chef::Client.
Locks the run while doing its job.
Fires run_start before doing anything and fires run_completed or run_failed when finished. Also notifies client listeners of run_started at the beginning of Compile, and run_completed_successfully or run_failed when all is complete.
Phase 1: Setup
Gets information about the system and the run we are doing.
-
Run ohai to collect system information.
-
Register / connect to the Chef server (unless in solo mode).
-
Retrieve the node (or create a new one).
-
Merge in json_attribs, Chef::Config.environment, and override_run_list.
Phase 2: Compile
Decides what we plan to converge by compiling recipes.
-
Sync required cookbooks to the local cache.
-
Load libraries from all cookbooks.
-
Load attributes from all cookbooks.
-
Load LWRPs from all cookbooks.
-
Load resource definitions from all cookbooks.
-
Load recipes in the run list.
-
Load recipes from the command line.
Phase 3: Converge
Brings the system up to date.
-
Converge the resources built from recipes in Phase 2.
-
Save the node.
-
Reboot if we were asked to.
Phase 4: Audit
Runs ‘control_group’ audits in recipes. This entire section can be enabled or disabled with config.
-
‘control_group’ DSL collects audits during Phase 2
-
Audits are run using RSpec
-
Errors are collected and reported using the formatters
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# File 'lib/chef/client.rb', line 244 def run start_profiling run_error = nil runlock = RunLock.new(Chef::Config.lockfile) # TODO feels like acquire should have its own block arg for this runlock.acquire # don't add code that may fail before entering this section to be sure to release lock begin runlock.save_pid request_id = Chef::RequestID.instance.request_id run_context = nil events.run_start(Chef::VERSION) Chef::Log.info("*** Chef #{Chef::VERSION} ***") Chef::Log.info("Platform: #{RUBY_PLATFORM}") Chef::Log.info "Chef-client pid: #{Process.pid}" Chef::Log.debug("Chef-client request_id: #{request_id}") enforce_path_sanity run_ohai register unless Chef::Config[:solo_legacy_mode] register_data_collector_reporter load_node build_node run_status.run_id = request_id run_status.start_clock Chef::Log.info("Starting Chef Run for #{node.name}") run_started do_windows_admin_check run_context = setup_run_context if Chef::Config[:audit_mode] != :audit_only converge_error = converge_and_save(run_context) end if Chef::Config[:why_run] == true # why_run should probably be renamed to why_converge Chef::Log.debug("Not running controls in 'why-run' mode - this mode is used to see potential converge changes") elsif Chef::Config[:audit_mode] != :disabled audit_error = run_audits(run_context) end # Raise converge_error so run_failed reporters/events are processed. raise converge_error if converge_error run_status.stop_clock Chef::Log.info("Chef Run complete in #{run_status.elapsed_time} seconds") run_completed_successfully events.run_completed(node) # keep this inside the main loop to get exception backtraces end_profiling # rebooting has to be the last thing we do, no exceptions. Chef::Platform::Rebooter.reboot_if_needed!(node) rescue Exception => run_error # CHEF-3336: Send the error first in case something goes wrong below and we don't know why Chef::Log.debug("Re-raising exception: #{run_error.class} - #{run_error.}\n#{run_error.backtrace.join("\n ")}") # If we failed really early, we may not have a run_status yet. Too early for these to be of much use. if run_status run_status.stop_clock run_status.exception = run_error run_failed end events.run_failed(run_error) ensure Chef::RequestID.instance.reset_request_id @run_status = nil runlock.release end # Raise audit, converge, and other errors here so that we exit # with the proper exit status code and everything gets raised # as a RunFailedWrappingError if run_error || converge_error || audit_error error = if Chef::Config[:audit_mode] == :disabled run_error || converge_error else e = if run_error == converge_error Chef::Exceptions::RunFailedWrappingError.new(converge_error, audit_error) else Chef::Exceptions::RunFailedWrappingError.new(run_error, converge_error, audit_error) end e.fill_backtrace e end Chef::Application.debug_stacktrace(error) raise error end true end |
#run_audits(run_context) ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Run the audit phase.
Triggers the audit_phase_start, audit_phase_complete and audit_phase_failed events.
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# File 'lib/chef/client.rb', line 732 def run_audits(run_context) begin events.audit_phase_start(run_status) Chef::Log.info("Starting audit phase") auditor = Chef::Audit::Runner.new(run_context) auditor.run if auditor.failed? audit_exception = Chef::Exceptions::AuditsFailed.new(auditor.num_failed, auditor.num_total) @events.audit_phase_failed(audit_exception, Chef::Audit::Logger.read_buffer) else @events.audit_phase_complete(Chef::Audit::Logger.read_buffer) end rescue Exception => e Chef::Log.error("Audit phase failed with error message: #{e.}") @events.audit_phase_failed(e, Chef::Audit::Logger.read_buffer) audit_exception = e end audit_exception end |
#run_completed_successfully ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Callback to fire notifications that the run completed successfully
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# File 'lib/chef/client.rb', line 437 def run_completed_successfully success_handlers = self.class.run_completed_successfully_notifications success_handlers.each do |notification| notification.call(run_status) end end |
#run_failed ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Callback to fire notifications that the Chef run failed
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# File 'lib/chef/client.rb', line 449 def run_failed failure_handlers = self.class.run_failed_notifications failure_handlers.each do |notification| notification.call(run_status) end end |
#run_ohai ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Run ohai plugins. Runs all ohai plugins unless minimal_ohai is specified.
Sends the ohai_completed event when finished.
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# File 'lib/chef/client.rb', line 558 def run_ohai filter = Chef::Config[:minimal_ohai] ? %w{fqdn machinename hostname platform platform_version os os_version} : nil ohai.all_plugins(filter) events.ohai_completed(node) end |
#run_started ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Callback to fire notifications that the Chef run is starting
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# File 'lib/chef/client.rb', line 425 def run_started self.class.run_start_notifications.each do |notification| notification.call(run_status) end events.run_started(run_status) end |
#save_updated_node ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Save the updated node to Chef.
Does not save if we are in solo mode or using override_runlist.
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# File 'lib/chef/client.rb', line 537 def save_updated_node if Chef::Config[:solo_legacy_mode] # nothing to do elsif policy_builder.temporary_policy? Chef::Log.warn("Skipping final node save because override_runlist was given") else Chef::Log.debug("Saving the current state of node #{node_name}") node.save end end |
#setup_run_context ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Sets up the run context.
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# File 'lib/chef/client.rb', line 509 def setup_run_context run_context = policy_builder.setup_run_context(specific_recipes) assert_cookbook_path_not_empty(run_context) run_status.run_context = run_context run_context end |
#sync_cookbooks ⇒ Object
This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.
Sync cookbooks to local cache.
TODO this appears to be unused.
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# File 'lib/chef/client.rb', line 497 def sync_cookbooks policy_builder.sync_cookbooks end |