Class: Fluent::Rdkafka2Output
- Inherits:
-
Output
- Object
- Output
- Fluent::Rdkafka2Output
- Defined in:
- lib/fluent/plugin/out_rdkafka2.rb
Defined Under Namespace
Classes: EnqueueRate
Constant Summary
Constants included from KafkaPluginUtil::SSLSettings
KafkaPluginUtil::SSLSettings::DummyFormatter
Instance Method Summary collapse
- #build_config ⇒ Object
- #close_producer(producer) ⇒ Object
- #configure(conf) ⇒ Object
- #enqueue_with_retry(producer, topic, record_buf, message_key, partition, headers, time) ⇒ Object
- #get_producer ⇒ Object
-
#initialize ⇒ Rdkafka2Output
constructor
A new instance of Rdkafka2Output.
- #multi_workers_ready? ⇒ Boolean
- #setup_formatter(conf) ⇒ Object
- #shutdown ⇒ Object
- #shutdown_producers ⇒ Object
- #start ⇒ Object
- #wait_writing_threads ⇒ Object
- #write(chunk) ⇒ Object
Methods included from KafkaPluginUtil::SaslSettings
Methods included from KafkaPluginUtil::SSLSettings
included, #pickup_ssl_endpoint, #read_ssl_file
Constructor Details
#initialize ⇒ Rdkafka2Output
Returns a new instance of Rdkafka2Output.
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 164 def initialize super @producers = nil @producers_mutex = nil @shared_producer = nil @enqueue_rate = nil @writing_threads_mutex = Mutex.new @writing_threads = Set.new end |
Instance Method Details
#build_config ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 243 def build_config config = {:"bootstrap.servers" => @brokers} if @ssl_ca_cert && @ssl_ca_cert[0] ssl = true config[:"ssl.ca.location"] = @ssl_ca_cert[0] config[:"ssl.certificate.location"] = @ssl_client_cert if @ssl_client_cert config[:"ssl.key.location"] = @ssl_client_cert_key if @ssl_client_cert_key config[:"ssl.key.password"] = @ssl_client_cert_key_password if @ssl_client_cert_key_password end if @principal sasl = true config[:"sasl.mechanisms"] = "GSSAPI" config[:"sasl.kerberos.principal"] = @principal config[:"sasl.kerberos.service.name"] = @service_name if @service_name config[:"sasl.kerberos.keytab"] = @keytab if @keytab end if ssl && sasl security_protocol = "SASL_SSL" elsif ssl && !sasl security_protocol = "SSL" elsif !ssl && sasl security_protocol = "SASL_PLAINTEXT" else security_protocol = "PLAINTEXT" end config[:"security.protocol"] = security_protocol config[:"compression.codec"] = @compression_codec if @compression_codec config[:"message.send.max.retries"] = @max_send_retries if @max_send_retries config[:"request.required.acks"] = @required_acks if @required_acks config[:"request.timeout.ms"] = @ack_timeout * 1000 if @ack_timeout config[:"queue.buffering.max.ms"] = @rdkafka_buffering_max_ms if @rdkafka_buffering_max_ms config[:"queue.buffering.max.messages"] = @rdkafka_buffering_max_messages if @rdkafka_buffering_max_messages config[:"message.max.bytes"] = @rdkafka_message_max_bytes if @rdkafka_message_max_bytes config[:"batch.num.messages"] = @rdkafka_message_max_num if @rdkafka_message_max_num config[:"sasl.username"] = @username if @username config[:"sasl.password"] = @password if @password @rdkafka_options.each { |k, v| config[k.to_sym] = v } config end |
#close_producer(producer) ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 341 def close_producer(producer) unless producer.close(10) log.warn("Queue is forcefully closed after 10 seconds wait") end end |
#configure(conf) ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 175 def configure(conf) super log.instance_eval { def add(level, = nil) if .nil? if block_given? = yield else return end end # Follow rdkakfa's log level. See also rdkafka-ruby's bindings.rb: https://github.com/appsignal/rdkafka-ruby/blob/e5c7261e3f2637554a5c12b924be297d7dca1328/lib/rdkafka/bindings.rb#L117 case level when Logger::FATAL self.fatal() when Logger::ERROR self.error() when Logger::WARN self.warn() when Logger::INFO self.info() when Logger::DEBUG self.debug() else self.trace() end end } Rdkafka::Config.logger = log config = build_config @rdkafka = Rdkafka::Config.new(config) if @default_topic.nil? if @chunk_keys.include?(@topic_key) && !@chunk_key_tag log.warn "Use '#{@topic_key}' field of event record for topic but no fallback. Recommend to set default_topic or set 'tag' in buffer chunk keys like <buffer #{@topic_key},tag>" end else if @chunk_key_tag log.warn "default_topic is set. Fluentd's event tag is not used for topic" end end formatter_conf = conf.elements('format').first unless formatter_conf raise Fluent::ConfigError, "<format> section is required." end unless formatter_conf["@type"] raise Fluent::ConfigError, "format/@type is required." end @formatter_proc = setup_formatter(formatter_conf) @topic_key_sym = @topic_key.to_sym @headers_from_record_accessors = {} @headers_from_record.each do |key, value| @headers_from_record_accessors[key] = record_accessor_create(value) end @exclude_field_accessors = @exclude_fields.map do |field| record_accessor_create(field) end @enqueue_rate = EnqueueRate.new(@max_enqueue_bytes_per_second) unless @max_enqueue_bytes_per_second.nil? @record_field_accessor = nil @record_field_accessor = record_accessor_create(@record_key) unless @record_key.nil? end |
#enqueue_with_retry(producer, topic, record_buf, message_key, partition, headers, time) ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 440 def enqueue_with_retry(producer, topic, record_buf, , partition, headers, time) attempt = 0 loop do begin @enqueue_rate.raise_if_limit_exceeded(record_buf.bytesize) if @enqueue_rate return producer.produce(topic: topic, payload: record_buf, key: , partition: partition, headers: headers, timestamp: @use_event_time ? Time.at(time) : nil) rescue EnqueueRate::LimitExceeded => e @enqueue_rate.revert if @enqueue_rate duration = e.next_retry_clock - Fluent::Clock.now sleep(duration) if duration > 0.0 rescue Exception => e @enqueue_rate.revert if @enqueue_rate if e.respond_to?(:code) && e.code == :queue_full if attempt <= @max_enqueue_retries log.warn "Failed to enqueue message; attempting retry #{attempt} of #{@max_enqueue_retries} after #{@enqueue_retry_backoff}s" sleep @enqueue_retry_backoff attempt += 1 else raise "Failed to enqueue message although tried retry #{@max_enqueue_retries} times" end else raise e end end end end |
#get_producer ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 347 def get_producer if @share_producer @shared_producer else @producers_mutex.synchronize { producer = @producers[Thread.current.object_id] unless producer producer = @rdkafka.producer @producers[Thread.current.object_id] = producer end producer } end end |
#multi_workers_ready? ⇒ Boolean
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 302 def multi_workers_ready? true end |
#setup_formatter(conf) ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 362 def setup_formatter(conf) type = conf['@type'] case type when 'ltsv' require 'ltsv' Proc.new { |tag, time, record| LTSV.dump(record) } else @formatter = formatter_create(usage: 'rdkafka-plugin', conf: conf) @formatter.method(:format) end end |
#shutdown ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 316 def shutdown super wait_writing_threads shutdown_producers end |
#shutdown_producers ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 322 def shutdown_producers if @share_producer close_producer(@shared_producer) @shared_producer = nil else @producers_mutex.synchronize { shutdown_threads = @producers.map { |key, producer| th = Thread.new { close_producer(producer) } th.abort_on_exception = true th } shutdown_threads.each { |th| th.join } @producers = {} } end end |
#start ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 291 def start if @share_producer @shared_producer = @rdkafka.producer else @producers = {} @producers_mutex = Mutex.new end super end |
#wait_writing_threads ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 306 def wait_writing_threads done = false until done do @writing_threads_mutex.synchronize do done = true if @writing_threads.empty? end sleep(1) unless done end end |
#write(chunk) ⇒ Object
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# File 'lib/fluent/plugin/out_rdkafka2.rb', line 374 def write(chunk) @writing_threads_mutex.synchronize { @writing_threads.add(Thread.current) } tag = chunk..tag topic = if @topic extract_placeholders(@topic, chunk) else (chunk..variables && chunk..variables[@topic_key_sym]) || @default_topic || tag end handlers = [] headers = @headers.clone begin producer = get_producer chunk.msgpack_each { |time, record| begin record = inject_values_to_record(tag, time, record) record.delete(@topic_key) if @exclude_topic_key partition = (@exclude_partition ? record.delete(@partition_key) : record[@partition_key]) || @default_partition = (@exclude_message_key ? record.delete(@message_key_key) : record[@message_key_key]) || @default_message_key @headers_from_record_accessors.each do |key, header_accessor| headers[key] = header_accessor.call(record) end unless @exclude_fields.empty? @exclude_field_accessors.each do |exclude_field_acessor| exclude_field_acessor.delete(record) end end record = @record_field_accessor.call(record) unless @record_field_accessor.nil? record_buf = @formatter_proc.call(tag, time, record) record_buf_bytes = record_buf.bytesize if @max_send_limit_bytes && record_buf_bytes > @max_send_limit_bytes log.warn "record size exceeds max_send_limit_bytes. Skip event:", :time => time, :record_size => record_buf_bytes log.debug "Skipped event:", :record => record next end rescue StandardError => e log.warn "unexpected error during format record. Skip broken event:", :error => e.to_s, :error_class => e.class.to_s, :time => time, :record => record next end handler = enqueue_with_retry(producer, topic, record_buf, , partition, headers, time) if @rdkafka_delivery_handle_poll_timeout != 0 handlers << handler end } handlers.each { |handler| handler.wait(max_wait_timeout: @rdkafka_delivery_handle_poll_timeout) } end rescue Exception => e if @discard_kafka_delivery_failed log.warn "Delivery failed. Discard events:", :error => e.to_s, :error_class => e.class.to_s, :tag => tag else log.warn "Send exception occurred: #{e} at #{e.backtrace.first}" # Raise exception to retry sendind messages raise e end ensure @writing_threads_mutex.synchronize { @writing_threads.delete(Thread.current) } end |