Class: LogStash::Runner
- Inherits:
-
Clamp::StrictCommand
- Object
- Command
- Clamp::StrictCommand
- LogStash::Runner
- Includes:
- Util::Loggable
- Defined in:
- lib/logstash/runner.rb
Instance Attribute Summary collapse
-
#agent ⇒ Object
readonly
Returns the value of attribute agent.
Instance Method Summary collapse
-
#cli_help?(args) ⇒ Boolean
is the user asking for CLI help subcommand?.
-
#configure_plugin_paths(paths) ⇒ Object
add the given paths for ungemified/bare plugins lookups.
- #create_agent(*args) ⇒ Object
- #execute ⇒ Object
-
#fail(message) ⇒ Object
Emit a failure message and abort.
-
#fetch_settings_path(cli_args) ⇒ Object
where can I find the logstash.yml file? 1.
-
#initialize(*args) ⇒ Runner
constructor
A new instance of Runner.
- #run(args) ⇒ Object
- #setting(key) ⇒ Object
-
#show_gems ⇒ Object
def show_version_java.
-
#show_short_help ⇒ Object
def fail.
-
#show_version ⇒ Object
def self.main.
-
#show_version_java ⇒ Object
def show_version_ruby.
-
#show_version_logstash ⇒ Object
def show_version.
-
#show_version_ruby ⇒ Object
def show_version_logstash.
- #start_shell(shell, start_binding) ⇒ Object
- #trap_sighup ⇒ Object
- #trap_sigint ⇒ Object
- #trap_sigterm ⇒ Object
Methods included from Util::Loggable
included, #logger, #slow_logger
Methods inherited from Clamp::StrictCommand
Methods included from Clamp::Option::StrictDeclaration
#define_deprecated_accessors_for, #define_deprecated_writer_for, #define_reader_for, #define_simple_writer_for
Constructor Details
Instance Attribute Details
#agent ⇒ Object (readonly)
Returns the value of attribute agent.
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# File 'lib/logstash/runner.rb', line 175 def agent @agent end |
Instance Method Details
#cli_help?(args) ⇒ Boolean
is the user asking for CLI help subcommand?
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# File 'lib/logstash/runner.rb', line 481 def cli_help?(args) # I know, double negative !(["--help", "-h"] & args).empty? end |
#configure_plugin_paths(paths) ⇒ Object
add the given paths for ungemified/bare plugins lookups
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# File 'lib/logstash/runner.rb', line 391 def configure_plugin_paths(paths) Array(paths).each do |path| fail(I18n.t("logstash.runner.configuration.plugin_path_missing", :path => path)) unless File.directory?(path) LogStash::Environment.add_plugin_path(path) end end |
#create_agent(*args) ⇒ Object
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# File 'lib/logstash/runner.rb', line 398 def create_agent(*args) LogStash::Agent.new(*args) end |
#execute ⇒ Object
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# File 'lib/logstash/runner.rb', line 207 def execute # Only when execute is have the CLI options been added to the @settings # We invoke post_process to apply extra logic to them. # The post_process callbacks have been added in environment.rb @settings.post_process require "logstash/util" require "logstash/util/java_version" require "stud/task" # Configure Logstash logging facility, this need to be done before everything else to # make sure the logger has the correct settings and the log level is correctly defined. java.lang.System.setProperty("ls.logs", setting("path.logs")) java.lang.System.setProperty("ls.log.format", setting("log.format")) java.lang.System.setProperty("ls.log.level", setting("log.level")) unless java.lang.System.getProperty("log4j.configurationFile") log4j_config_location = ::File.join(setting("path.settings"), "log4j2.properties") # Windows safe way to produce a file: URI. file_schema = "file://" + (LogStash::Environment.windows? ? "/" : "") LogStash::Logging::Logger::reconfigure(URI.join(file_schema + File.absolute_path(log4j_config_location)).to_s) end # override log level that may have been introduced from a custom log4j config file LogStash::Logging::Logger::configure_logging(setting("log.level")) if setting("config.debug") && !logger.debug? logger.warn("--config.debug was specified, but log.level was not set to \'debug\'! No config info will be logged.") end # Add local modules to the registry before everything else LogStash::Modules::Util.register_local_modules(LogStash::Environment::LOGSTASH_HOME) # We configure the registry and load any plugin that can register hooks # with logstash, this need to be done before any operation. LogStash::PLUGIN_REGISTRY.setup! @settings.validate_all LogStash::Util::set_thread_name(self.class.name) if RUBY_VERSION < "1.9.2" logger.fatal "Ruby 1.9.2 or later is required. (You are running: " + RUBY_VERSION + ")" return 1 end # Exit on bad java versions java_version = LogStash::Util::JavaVersion.version if LogStash::Util::JavaVersion.bad_java_version?(java_version) logger.fatal "Java version 1.8.0 or later is required. (You are running: #{java_version})" return 1 end module_parser = LogStash::Modules::CLIParser.new(@modules_list, @modules_variable_list) # Now populate Setting for modules.list with our parsed array. @settings.set("modules.cli", module_parser.output) LogStash::ShutdownWatcher.unsafe_shutdown = setting("pipeline.unsafe_shutdown") configure_plugin_paths(setting("path.plugins")) if version? show_version return 0 end return start_shell(setting("interactive"), binding) if setting("interactive") @settings.format_settings.each {|line| logger.debug(line) } module_configs = LogStash::Config::ModulesCommon.pipeline_configs(@settings) module_config_hash = module_configs.first if !module_config_hash.nil? @settings.set_value("config.string", module_config_hash["config_string"]) end if module_configs.size > 1 logger.warn "Multiple modules defined in logstash.yml - using the first one: #{module_config_hash["pipeline_id"]}" end if setting("config.string").nil? && setting("path.config").nil? fail(I18n.t("logstash.runner.missing-configuration")) end if setting("config.reload.automatic") && setting("path.config").nil? # there's nothing to reload signal_usage_error(I18n.t("logstash.runner.reload-without-config-path")) end if setting("config.test_and_exit") config_loader = LogStash::Config::Loader.new(logger) config_str = config_loader.format_config(setting("path.config"), setting("config.string")) begin LogStash::BasePipeline.new(config_str) puts "Configuration OK" logger.info "Using config.test_and_exit mode. Config Validation Result: OK. Exiting Logstash" return 0 rescue => e logger.fatal I18n.t("logstash.runner.invalid-configuration", :error => e.) return 1 end end # lock path.data before starting the agent @data_path_lock = FileLockFactory.obtainLock(java.nio.file.Paths.get(setting("path.data")).to_absolute_path, ".lock") @agent = create_agent(@settings) @agent.register_pipeline(@settings) # enable sigint/sigterm before starting the agent # to properly handle a stalled agent sigint_id = trap_sigint() sigterm_id = trap_sigterm() @agent_task = Stud::Task.new { @agent.execute } # no point in enabling config reloading before the agent starts # also windows doesn't have SIGHUP. we can skip it sighup_id = LogStash::Environment.windows? ? nil : trap_sighup() agent_return = @agent_task.wait @agent.shutdown # flush any outstanding log messages during shutdown org.apache.logging.log4j.LogManager.shutdown agent_return rescue org.logstash.LockException => e logger.fatal(I18n.t("logstash.runner.locked-data-path", :path => setting("path.data"))) return 1 rescue Clamp::UsageError => e $stderr.puts "ERROR: #{e.}" show_short_help return 1 rescue => e # if logger itself is not initialized if LogStash::Logging::Logger.get_logging_context.nil? $stderr.puts "#{I18n.t("oops")} :error => #{e}, :backtrace => #{e.backtrace}" else logger.fatal(I18n.t("oops"), :error => e, :backtrace => e.backtrace) end return 1 ensure Stud::untrap("INT", sigint_id) unless sigint_id.nil? Stud::untrap("TERM", sigterm_id) unless sigterm_id.nil? Stud::untrap("HUP", sighup_id) unless sighup_id.nil? FileLockFactory.releaseLock(@data_path_lock) if @data_path_lock @log_fd.close if @log_fd end |
#fail(message) ⇒ Object
Emit a failure message and abort.
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# File 'lib/logstash/runner.rb', line 403 def fail() signal_usage_error() end |
#fetch_settings_path(cli_args) ⇒ Object
where can I find the logstash.yml file?
-
look for a “–path.settings path”
-
look for a “–path.settings=path”
-
check if the LS_SETTINGS_DIR environment variable is set
-
return nil if not found
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# File 'lib/logstash/runner.rb', line 467 def fetch_settings_path(cli_args) if i=cli_args.find_index("--path.settings") cli_args[i+1] elsif settings_arg = cli_args.find {|v| v.match(/--path.settings=/) } match = settings_arg.match(/--path.settings=(.*)/) match[1] elsif ENV['LS_SETTINGS_DIR'] ENV['LS_SETTINGS_DIR'] else nil end end |
#run(args) ⇒ Object
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# File 'lib/logstash/runner.rb', line 182 def run(args) settings_path = fetch_settings_path(args) @settings.set("path.settings", settings_path) if settings_path begin LogStash::SETTINGS.from_yaml(LogStash::SETTINGS.get("path.settings")) rescue Errno::ENOENT $stderr.puts "WARNING: Could not find logstash.yml which is typically located in $LS_HOME/config or /etc/logstash. You can specify the path using --path.settings. Continuing using the defaults" rescue => e # abort unless we're just looking for the help unless cli_help?(args) if e.kind_of?(Psych::Exception) yaml_file_path = ::File.join(LogStash::SETTINGS.get("path.settings"), "logstash.yml") $stderr.puts "ERROR: Failed to parse YAML file \"#{yaml_file_path}\". Please confirm if the YAML structure is valid (e.g. look for incorrect usage of whitespace or indentation). Aborting... parser_error=>#{e.}" else $stderr.puts "ERROR: Failed to load settings file from \"path.settings\". Aborting... path.setting=#{LogStash::SETTINGS.get("path.settings")}, exception=#{e.class}, message=>#{e.}" end return 1 end end super(*[args]) end |
#setting(key) ⇒ Object
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# File 'lib/logstash/runner.rb', line 458 def setting(key) @settings.get_value(key) end |
#show_gems ⇒ Object
def show_version_java
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# File 'lib/logstash/runner.rb', line 382 def show_gems require "rubygems" Gem::Specification.each do |spec| puts "gem #{spec.name} #{spec.version}" end end |
#show_short_help ⇒ Object
def fail
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# File 'lib/logstash/runner.rb', line 407 def show_short_help puts I18n.t("logstash.runner.short-help") end |
#show_version ⇒ Object
def self.main
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# File 'lib/logstash/runner.rb', line 358 def show_version show_version_logstash if logger.info? show_version_ruby show_version_java if LogStash::Environment.jruby? show_gems if logger.debug? end end |
#show_version_java ⇒ Object
def show_version_ruby
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# File 'lib/logstash/runner.rb', line 376 def show_version_java properties = java.lang.System.getProperties puts "java #{properties["java.version"]} (#{properties["java.vendor"]})" puts "jvm #{properties["java.vm.name"]} / #{properties["java.vm.version"]}" end |
#show_version_logstash ⇒ Object
def show_version
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# File 'lib/logstash/runner.rb', line 368 def show_version_logstash puts "logstash #{LOGSTASH_VERSION}" end |
#show_version_ruby ⇒ Object
def show_version_logstash
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# File 'lib/logstash/runner.rb', line 372 def show_version_ruby puts RUBY_DESCRIPTION end |
#start_shell(shell, start_binding) ⇒ Object
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# File 'lib/logstash/runner.rb', line 411 def start_shell(shell, start_binding) case shell when "pry" require 'pry' start_binding.pry when "irb" require 'irb' ARGV.clear # TODO: set binding to this instance of Runner # currently bugged as per https://github.com/jruby/jruby/issues/384 IRB.start(__FILE__) else fail(I18n.t("logstash.runner.invalid-shell")) end end |
#trap_sighup ⇒ Object
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# File 'lib/logstash/runner.rb', line 427 def trap_sighup Stud::trap("HUP") do logger.warn(I18n.t("logstash.agent.sighup")) @agent.reload_state!(true) end end |
#trap_sigint ⇒ Object
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# File 'lib/logstash/runner.rb', line 441 def trap_sigint Stud::trap("INT") do if @interrupted_once logger.fatal(I18n.t("logstash.agent.forced_sigint")) # calling just Kernel.exit only raises SystemExit exception # and doesn't guarantee the process will terminate # We must call Kernel.exit! so java.lang.System.exit is called exit! else logger.warn(I18n.t("logstash.agent.sigint")) Thread.new(logger) {|lg| sleep 5; lg.warn(I18n.t("logstash.agent.slow_shutdown")) } @interrupted_once = true @agent_task.stop! end end end |
#trap_sigterm ⇒ Object
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# File 'lib/logstash/runner.rb', line 434 def trap_sigterm Stud::trap("TERM") do logger.warn(I18n.t("logstash.agent.sigterm")) @agent_task.stop! end end |