135 lines
5.3 KiB
Ruby
135 lines
5.3 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module Gitlab
|
|
module Database
|
|
module BackgroundMigration
|
|
class BatchedMigrationWrapper
|
|
extend Gitlab::Utils::StrongMemoize
|
|
|
|
# Wraps the execution of a batched_background_migration.
|
|
#
|
|
# Updates the job's tracking records with the status of the migration
|
|
# when starting and finishing execution, and optionally saves batch_metrics
|
|
# the migration provides, if any are given.
|
|
#
|
|
# The job's batch_metrics are serialized to JSON for storage.
|
|
def perform(batch_tracking_record)
|
|
start_tracking_execution(batch_tracking_record)
|
|
|
|
execute_batch(batch_tracking_record)
|
|
|
|
batch_tracking_record.status = :succeeded
|
|
rescue Exception # rubocop:disable Lint/RescueException
|
|
batch_tracking_record.status = :failed
|
|
|
|
raise
|
|
ensure
|
|
finish_tracking_execution(batch_tracking_record)
|
|
track_prometheus_metrics(batch_tracking_record)
|
|
end
|
|
|
|
private
|
|
|
|
def start_tracking_execution(tracking_record)
|
|
tracking_record.update!(attempts: tracking_record.attempts + 1, status: :running, started_at: Time.current, finished_at: nil, metrics: {})
|
|
end
|
|
|
|
def execute_batch(tracking_record)
|
|
job_instance = tracking_record.migration_job_class.new
|
|
|
|
job_instance.perform(
|
|
tracking_record.min_value,
|
|
tracking_record.max_value,
|
|
tracking_record.migration_table_name,
|
|
tracking_record.migration_column_name,
|
|
tracking_record.sub_batch_size,
|
|
tracking_record.pause_ms,
|
|
*tracking_record.migration_job_arguments)
|
|
|
|
if job_instance.respond_to?(:batch_metrics)
|
|
tracking_record.metrics = job_instance.batch_metrics
|
|
end
|
|
end
|
|
|
|
def finish_tracking_execution(tracking_record)
|
|
tracking_record.finished_at = Time.current
|
|
tracking_record.save!
|
|
end
|
|
|
|
def track_prometheus_metrics(tracking_record)
|
|
migration = tracking_record.batched_migration
|
|
base_labels = migration.prometheus_labels
|
|
|
|
metric_for(:gauge_batch_size).set(base_labels, tracking_record.batch_size)
|
|
metric_for(:gauge_sub_batch_size).set(base_labels, tracking_record.sub_batch_size)
|
|
metric_for(:gauge_interval).set(base_labels, tracking_record.batched_migration.interval)
|
|
metric_for(:gauge_job_duration).set(base_labels, (tracking_record.finished_at - tracking_record.started_at).to_i)
|
|
metric_for(:counter_updated_tuples).increment(base_labels, tracking_record.batch_size)
|
|
metric_for(:gauge_migrated_tuples).set(base_labels, tracking_record.batched_migration.migrated_tuple_count)
|
|
metric_for(:gauge_total_tuple_count).set(base_labels, tracking_record.batched_migration.total_tuple_count)
|
|
metric_for(:gauge_last_update_time).set(base_labels, Time.current.to_i)
|
|
|
|
if metrics = tracking_record.metrics
|
|
metrics['timings']&.each do |key, timings|
|
|
summary = metric_for(:histogram_timings)
|
|
labels = base_labels.merge(operation: key)
|
|
|
|
timings.each do |timing|
|
|
summary.observe(labels, timing)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
def metric_for(name)
|
|
self.class.metrics[name]
|
|
end
|
|
|
|
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',
|
|
{},
|
|
[0.1, 0.25, 0.5, 1, 5].freeze
|
|
),
|
|
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
|
|
end
|
|
end
|
|
end
|
|
end
|