Class: Fluent::Plugin::GcloudPubSubOutput

Inherits:
Output
  • Object
show all
Defined in:
lib/fluent/plugin/out_gcloud_pubsub.rb

Constant Summary collapse

DEFAULT_BUFFER_TYPE = 
"memory"
DEFAULT_FORMATTER_TYPE = 
"json"

Instance Method Summary collapse

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_gcloud_pubsub.rb', line 41

def configure(conf)
  compat_parameters_convert(conf, :buffer, :formatter)
  super
  @formatter = formatter_create
end

#format(tag, time, record) ⇒ Object 



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# File 'lib/fluent/plugin/out_gcloud_pubsub.rb', line 53

def format(tag, time, record)
  @formatter.format(tag, time, record).to_msgpack
end

#formatted_to_msgpack_binary? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluent/plugin/out_gcloud_pubsub.rb', line 57

def formatted_to_msgpack_binary?
  true
end

#multi_workers_ready? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluent/plugin/out_gcloud_pubsub.rb', line 61

def multi_workers_ready?
  true
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/out_gcloud_pubsub.rb', line 47

def start
  super
  @publisher = Fluent::GcloudPubSub::Publisher.new @project, @key, @topic, @skip_lookup
  log.debug "connected topic:#{@topic} in project #{@project}"
end

#write(chunk) ⇒ Object 



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# File 'lib/fluent/plugin/out_gcloud_pubsub.rb', line 65

def write(chunk)
  messages = []
  size = 0

  chunk.msgpack_each do |msg|
    if msg.bytesize > @max_message_size
      log.warn 'Drop a message because its size exceeds `max_message_size`', size: msg.bytesize
      next
    end
    if messages.length + 1 > @max_messages || size + msg.bytesize > @max_total_size
      publish messages
      messages = []
      size = 0
    end
    messages << msg
    size += msg.bytesize
  end

  if messages.length > 0
    publish messages
  end
rescue Fluent::GcloudPubSub::RetryableError => ex
  log.warn "Retryable error occurs. Fluentd will retry.", error_message: ex.to_s, error_class: ex.class.to_s
  raise ex
rescue Google::Cloud::UnauthenticatedError => ex
  log.warn "Encountered UnauthenticatedError, renewing @publisher instance", error_message: ex.to_s, error_class: ex.class.to_s
  @publisher = Fluent::GcloudPubSub::Publisher.new @project, @key, @topic, @skip_lookup
  raise ex
rescue => ex
  log.error "unexpected error", error_message: ex.to_s, error_class: ex.class.to_s
  log.error_backtrace
  raise ex
end