Class: Gitlab::Database::BackgroundMigration::PrometheusMetrics

Inherits:
Object
  • Object
show all
Extended by:
Utils::StrongMemoize
Defined in:
lib/gitlab/database/background_migration/prometheus_metrics.rb

Constant Summary collapse

QUERY_TIMING_BUCKETS = 
[0.1, 0.25, 0.5, 1, 5].freeze

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.metrics ⇒ Object 



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# File 'lib/gitlab/database/background_migration/prometheus_metrics.rb', line 27

def self.metrics
  strong_memoize(:metrics) do
    {
      gauge_batch_size: Gitlab::Metrics.gauge(
        :batched_migration_job_batch_size,
        'Batch size for a batched migration job'
      ),
      gauge_sub_batch_size: Gitlab::Metrics.gauge(
        :batched_migration_job_sub_batch_size,
        'Sub-batch size for a batched migration job'
      ),
      gauge_interval: Gitlab::Metrics.gauge(
        :batched_migration_job_interval_seconds,
        'Interval for a batched migration job'
      ),
      gauge_job_duration: Gitlab::Metrics.gauge(
        :batched_migration_job_duration_seconds,
        'Duration for a batched migration job'
      ),
      counter_updated_tuples: Gitlab::Metrics.counter(
        :batched_migration_job_updated_tuples_total,
        'Number of tuples updated by batched migration job'
      ),
      gauge_migrated_tuples: Gitlab::Metrics.gauge(
        :batched_migration_migrated_tuples_total,
        'Total number of tuples migrated by a batched migration'
      ),
      histogram_timings: Gitlab::Metrics.histogram(
        :batched_migration_job_query_duration_seconds,
        'Query timings for a batched migration job',
        {},
        QUERY_TIMING_BUCKETS
      ),
      gauge_total_tuple_count: Gitlab::Metrics.gauge(
        :batched_migration_total_tuple_count,
        'Total tuple count the migration needs to touch'
      ),
      gauge_last_update_time: Gitlab::Metrics.gauge(
        :batched_migration_last_update_time_seconds,
        'Unix epoch time in seconds'
      )
    }
  end
end

Instance Method Details

#track(job_record) ⇒ Object 



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# File 'lib/gitlab/database/background_migration/prometheus_metrics.rb', line 11

def track(job_record)
  migration_record = job_record.batched_migration
  base_labels = migration_record.prometheus_labels

  metric_for(:gauge_batch_size).set(base_labels, job_record.batch_size)
  metric_for(:gauge_sub_batch_size).set(base_labels, job_record.sub_batch_size)
  metric_for(:gauge_interval).set(base_labels, job_record.batched_migration.interval)
  metric_for(:gauge_job_duration).set(base_labels, (job_record.finished_at - job_record.started_at).to_i)
  metric_for(:counter_updated_tuples).increment(base_labels, job_record.batch_size)
  metric_for(:gauge_migrated_tuples).set(base_labels, migration_record.migrated_tuple_count)
  metric_for(:gauge_total_tuple_count).set(base_labels, migration_record.total_tuple_count)
  metric_for(:gauge_last_update_time).set(base_labels, Time.current.to_i)

  track_timing_metrics(base_labels, job_record.metrics)
end