Class: Karafka::Web::Ui::Pro::Controllers::Messages

Inherits:
Controllers::Base show all
Defined in:
lib/karafka/web/ui/pro/controllers/messages.rb

Overview

Controller for working with messages While part of messages operations is done via explorer (exploring), this controller handles other cases not related to viewing data

Instance Method Summary collapse

Methods inherited from Controllers::Base

#initialize

Constructor Details

This class inherits a constructor from Karafka::Web::Ui::Controllers::Base

Instance Method Details

#download(topic_id, partition_id, offset) ⇒ Object

Dispatches the message raw payload to the browser as a file

Parameters:

  • topic_id (String)
  • partition_id (Integer)
  • offset (Integer) —

    offset of the message we want to download



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# File 'lib/karafka/web/ui/pro/controllers/messages.rb', line 50

def download(topic_id, partition_id, offset)
  message = Ui::Models::Message.find(topic_id, partition_id, offset)

  # Check if downloads are allowed
  return deny unless visibility_filter.download?(message)

  file(
    message.raw_payload,
    "#{topic_id}_#{partition_id}_#{offset}_payload.msg"
  )
end

#export(topic_id, partition_id, offset) ⇒ Object

Dispatches the message payload first deserialized and then serialized to JSON It differs from the raw payload in cases where raw payload is compressed or binary or contains data that the Web UI user should not see that was altered on the Web UI with the visibility filter.

Parameters:

  • topic_id (String)
  • partition_id (Integer)
  • offset (Integer) —

    offset of the message we want to export



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# File 'lib/karafka/web/ui/pro/controllers/messages.rb', line 70

def export(topic_id, partition_id, offset)
  message = Ui::Models::Message.find(topic_id, partition_id, offset)

  # Check if exports are allowed
  return deny unless visibility_filter.export?(message)

  file(
    message.payload.to_json,
    "#{topic_id}_#{partition_id}_#{offset}_payload.json"
  )
end

#republish(topic_id, partition_id, offset) ⇒ Object

Takes a requested message content and republishes it again

Parameters:

  • topic_id (String)
  • partition_id (Integer)
  • offset (Integer) —

    offset of the message we want to republish



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# File 'lib/karafka/web/ui/pro/controllers/messages.rb', line 28

def republish(topic_id, partition_id, offset)
  message = Ui::Models::Message.find(topic_id, partition_id, offset)

  delivery = ::Karafka::Web.producer.produce_sync(
    topic: topic_id,
    partition: partition_id,
    payload: message.raw_payload,
    headers: message.headers,
    key: message.key
  )

  redirect(
    :back,
    success: reproduced(message, delivery)
  )
end