Class: Fluent::Plugin::SQSInput

Inherits:
Input
  • Object
show all
Defined in:
lib/fluent/plugin/in_sqs.rb

Instance Method Summary collapse

Instance Method Details

#client ⇒ Object 



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# File 'lib/fluent/plugin/in_sqs.rb', line 52

def client
  @client ||= Aws::SQS::Client.new(stub_responses: @stub_responses)
end

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/in_sqs.rb', line 28

def configure(conf)
  super

  if @tag == nil
    raise Fluent::ConfigError, "tag configuration key is mandatory"
  end

  if @sqs_url == nil
    raise Fluent::ConfigError, "sqs_url configuration key is mandatory"
  end

  Aws.config = {
    access_key_id: @aws_key_id,
    secret_access_key: @aws_sec_key,
    region: @region
  }
end

#parse_message(message) ⇒ Object 



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# File 'lib/fluent/plugin/in_sqs.rb', line 95

def parse_message(message)
  record = {}

  if @parse_body_as_json == true
    record['body'] = prase_json_string(message.body.to_s)
  else
    record['body'] = message.body.to_s
  end

  if @add_receipt_handle == true
    record['receipt_handle'] = message.receipt_handle.to_s
  end

  if @add_message_id == true
    record['message_id'] = message.message_id.to_s
  end

  if @add_md5_of_body == true
    record['md5_of_body'] = message.md5_of_body.to_s
  end

  if @add_queue_url == true
    record['queue_url'] = message.queue_url.to_s
  end

  if @attribute_name_to_extract.to_s.strip.length > 0
    record[@attribute_name_to_extract] = message.message_attributes[@attribute_name_to_extract].string_value.to_s
  end
  
  record
end

#prase_json_string(jsonStr) ⇒ Object 



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# File 'lib/fluent/plugin/in_sqs.rb', line 83

def prase_json_string(jsonStr)
  response = jsonStr

  begin
    response = JSON.parse(jsonStr)
  rescue => ex
    # unable to pase json str (str is not a valid json)
  end

  response
end

#queue ⇒ Object 



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# File 'lib/fluent/plugin/in_sqs.rb', line 56

def queue
  @queue ||= Aws::SQS::Resource.new(client: client).queue(@sqs_url)
end

#run ⇒ Object 



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# File 'lib/fluent/plugin/in_sqs.rb', line 64

def run
  queue.receive_messages(
    max_number_of_messages: @max_number_of_messages,
    wait_time_seconds: @wait_time_seconds,
    visibility_timeout: @visibility_timeout,
    attribute_names: ['All'], # Receive all available built-in message attributes.
    message_attribute_names: ['All'] # Receive any custom message attributes.
  ).each do |message|
    record = parse_message(message)

    message.delete if @delete_message

    router.emit(@tag, Fluent::Engine.now, record)
  end
rescue => ex
  log.error 'failed to emit or receive', error: ex.to_s, error_class: ex.class
  log.warn_backtrace ex.backtrace
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/in_sqs.rb', line 60

def shutdown
  super
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/in_sqs.rb', line 46

def start
  super

  timer_execute(:in_sqs_run_periodic_timer, @receive_interval, &method(:run))
end