class Fluent::Plugin::MonitorAgentInput
Constants
- IGNORE_ATTRIBUTES
- MONITOR_INFO
Public Instance Methods
all_plugins()
click to toggle source
# File lib/fluent/plugin/in_monitor_agent.rb, line 258 def all_plugins array = [] # get all input plugins array.concat Fluent::Engine.root_agent.inputs # get all output plugins array.concat Fluent::Engine.root_agent.outputs # get all filter plugins array.concat Fluent::Engine.root_agent.filters Fluent::Engine.root_agent.labels.each { |name, l| # TODO: Add label name to outputs / filters for identifing plugins array.concat l.outputs array.concat l.filters } array end
fluentd_opts()
click to toggle source
# File lib/fluent/plugin/in_monitor_agent.rb, line 374 def fluentd_opts @fluentd_opts ||= get_fluentd_opts end
get_fluentd_opts()
click to toggle source
# File lib/fluent/plugin/in_monitor_agent.rb, line 378 def get_fluentd_opts opts = {} ObjectSpace.each_object(Fluent::Supervisor) { |obj| opts.merge!(obj.options) break } opts end
get_monitor_info(pe, opts={})
click to toggle source
get monitor info from the plugin `pe` and return a hash object
# File lib/fluent/plugin/in_monitor_agent.rb, line 325 def get_monitor_info(pe, opts={}) obj = {} # Common plugin information obj['plugin_id'] = pe.plugin_id obj['plugin_category'] = plugin_category(pe) obj['type'] = pe.config['@type'] obj['config'] = pe.config if !opts.has_key?(:with_config) || opts[:with_config] # run MONITOR_INFO in plugins' instance context and store the info to obj MONITOR_INFO.each_pair {|key,code| begin catch(:skip) do obj[key] = pe.instance_exec(&code) end rescue => e log.warn "unexpected error in monitoring plugins", key: key, plugin: pe.class, error: e end } # include all instance variables if :with_debug_info is set if opts[:with_debug_info] iv = {} pe.instance_eval do instance_variables.each {|sym| next if IGNORE_ATTRIBUTES.include?(sym) key = sym.to_s[1..-1] # removes first '@' iv[key] = instance_variable_get(sym) } end obj['instance_variables'] = iv end obj end
plugin_category(pe)
click to toggle source
# File lib/fluent/plugin/in_monitor_agent.rb, line 361 def plugin_category(pe) case pe when Fluent::Plugin::Input 'input'.freeze when Fluent::Plugin::Output, Fluent::Plugin::MultiOutput, Fluent::Plugin::BareOutput 'output'.freeze when Fluent::Plugin::Filter 'filter'.freeze else 'unknown'.freeze end end
plugin_info_by_id(plugin_id, opts={})
click to toggle source
search a plugin by plugin_id
# File lib/fluent/plugin/in_monitor_agent.rb, line 294 def plugin_info_by_id(plugin_id, opts={}) found = all_plugins.find {|pe| pe.respond_to?(:plugin_id) && pe.plugin_id.to_s == plugin_id } if found get_monitor_info(found, opts) else nil end end
plugin_info_by_tag(tag, opts={})
click to toggle source
try to match the tag and get the info from the matched output plugin TODO: Support output in label
# File lib/fluent/plugin/in_monitor_agent.rb, line 281 def plugin_info_by_tag(tag, opts={}) matches = Fluent::Engine.root_agent.event_router.instance_variable_get(:@match_rules) matches.each { |rule| if rule.match?(tag) if rule.collector.is_a?(Fluent::Plugin::Output) || rule.collector.is_a?(Fluent::Output) return get_monitor_info(rule.collector, opts) end end } nil end
plugins_info_all(opts={})
click to toggle source
# File lib/fluent/plugin/in_monitor_agent.rb, line 316 def plugins_info_all(opts={}) all_plugins.map {|pe| get_monitor_info(pe, opts) } end
plugins_info_by_type(type, opts={})
click to toggle source
This method returns an array because multiple plugins could have the same type
# File lib/fluent/plugin/in_monitor_agent.rb, line 307 def plugins_info_by_type(type, opts={}) array = all_plugins.select {|pe| (pe.config['@type'] == type) rescue nil } array.map {|pe| get_monitor_info(pe, opts) } end
shutdown()
click to toggle source
Calls superclass method
Fluent::Compat::Input#shutdown
# File lib/fluent/plugin/in_monitor_agent.rb, line 242 def shutdown if @srv @srv.shutdown @srv = nil end super end
start()
click to toggle source
Calls superclass method
Fluent::Compat::Input#start
# File lib/fluent/plugin/in_monitor_agent.rb, line 210 def start super log.debug "listening monitoring http server on http://#{@bind}:#{@port}/api/plugins" @srv = WEBrick::HTTPServer.new({ BindAddress: @bind, Port: @port, Logger: WEBrick::Log.new(STDERR, WEBrick::Log::FATAL), AccessLog: [], }) @srv.mount('/api/plugins', LTSVMonitorServlet, self) @srv.mount('/api/plugins.json', JSONMonitorServlet, self) @srv.mount('/api/config', LTSVConfigMonitorServlet, self) @srv.mount('/api/config.json', JSONConfigMonitorServlet, self) thread_create :in_monitor_agent_servlet do @srv.start end if @tag log.debug "tag parameter is specified. Emit plugins info to '#{@tag}'" opts = {with_config: false} timer_execute(:in_monitor_agent_emit, @emit_interval, repeat: true) { es = Fluent::MultiEventStream.new now = Fluent::Engine.now plugins_info_all(opts).each { |record| es.add(now, record) } router.emit_stream(@tag, es) } end end