Class: Karafka::Web::Ui::Models::Status::Checks::InitialConsumersMetrics

Inherits:
Base
  • Object
show all
Defined in:
lib/karafka/web/ui/models/status/checks/initial_consumers_metrics.rb

Overview

Checks if the initial consumers metrics are present and can be deserialized.

The consumers metrics topic must contain valid data that can be parsed. This check fetches the current metrics and attempts to deserialize it.

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

depends_on, independent!, independent?, #initialize

Constructor Details

This class inherits a constructor from Karafka::Web::Ui::Models::Status::Checks::Base

Class Method Details

.halted_details ⇒ Hash

Returns details indicating presence issue for halted state.

Returns:

  • (Hash) —

    details indicating presence issue for halted state



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# File 'lib/karafka/web/ui/models/status/checks/initial_consumers_metrics.rb', line 18

def halted_details
  { issue_type: :presence }
end

Instance Method Details

#call ⇒ Status::Step

Executes the initial consumers metrics check.

Fetches the current consumers metrics from Kafka and verifies it can be deserialized. Caches the result in context for subsequent checks.

Returns:



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# File 'lib/karafka/web/ui/models/status/checks/initial_consumers_metrics.rb', line 29

def call
  details = { issue_type: :presence }

  begin
    context.current_metrics ||= Models::ConsumersMetrics.current
    status = context.current_metrics ? :success : :failure
  rescue JSON::ParserError
    status = :failure
    details[:issue_type] = :deserialization
  end

  step(status, details)
end