Module: WaterDrop::Producer::Sync

Included in:
WaterDrop::Producer
Defined in:
lib/waterdrop/producer/sync.rb

Overview

Component for synchronous producer operations

Instance Method Summary collapse

Instance Method Details

#produce_many_sync(messages) ⇒ Array<Rdkafka::Producer::DeliveryReport>

Produces many messages to Kafka and waits for them to be delivered

Parameters:

  • messages (Array<Hash>) —

    array with messages that comply with the Contracts::Message contract

Returns:

  • (Array<Rdkafka::Producer::DeliveryReport>) —

    delivery reports

Raises:

  • (Rdkafka::RdkafkaError) —

    When adding the messages to rdkafka’s queue failed

  • (Rdkafka::Producer::WaitTimeoutError) —

    When the timeout has been reached and the some handles are still pending

  • (Errors::MessageInvalidError) —

    When any of the provided messages details are invalid and the message could not be sent to Kafka



55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
 
# File 'lib/waterdrop/producer/sync.rb', line 55

def produce_many_sync(messages)
  messages = middleware.run_many(messages)
  messages.each { |message| validate_message!(message) }

  dispatched = []

  @monitor.instrument('messages.produced_sync', producer_id: id, messages: messages) do
    messages.each do |message|
      dispatched << produce(message)
    end

    dispatched.map! do |handler|
      wait(handler)
    end

    dispatched
  end
rescue *SUPPORTED_FLOW_ERRORS
  re_raised = Errors::ProduceManyError.new(dispatched)

  @monitor.instrument(
    'error.occurred',
    producer_id: id,
    messages: messages,
    dispatched: dispatched,
    error: re_raised,
    type: 'messages.produce_many_sync'
  )

  raise re_raised
end

#produce_sync(message) ⇒ Rdkafka::Producer::DeliveryReport

Produces a message to Kafka and waits for it to be delivered

Parameters:

Returns:

  • (Rdkafka::Producer::DeliveryReport) —

    delivery report

Raises:

  • (Rdkafka::RdkafkaError) —

    When adding the message to rdkafka’s queue failed

  • (Rdkafka::Producer::WaitTimeoutError) —

    When the timeout has been reached and the handle is still pending

  • (Errors::MessageInvalidError) —

    When provided message details are invalid and the message could not be sent to Kafka



18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
 
# File 'lib/waterdrop/producer/sync.rb', line 18

def produce_sync(message)
  message = middleware.run(message)
  validate_message!(message)

  @monitor.instrument(
    'message.produced_sync',
    producer_id: id,
    message: message
  ) do
    wait(produce(message))
  end
rescue *SUPPORTED_FLOW_ERRORS
  re_raised = Errors::ProduceError.new

  @monitor.instrument(
    'error.occurred',
    producer_id: id,
    message: message,
    error: re_raised,
    type: 'message.produce_sync'
  )

  raise re_raised
end