60 lines
1.8 KiB
Ruby
60 lines
1.8 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Database
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module Migrations
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class Instrumentation
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STATS_FILENAME = 'migration-stats.json'
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def initialize(result_dir:, observer_classes: ::Gitlab::Database::Migrations::Observers.all_observers)
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@observer_classes = observer_classes
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@result_dir = result_dir
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end
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def observe(version:, name:, connection:, &block)
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observation = Observation.new(version: version, name: name, success: false)
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per_migration_result_dir = File.join(@result_dir, name)
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FileUtils.mkdir_p(per_migration_result_dir)
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observers = observer_classes.map { |c| c.new(observation, per_migration_result_dir, connection) }
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on_each_observer(observers) { |observer| observer.before }
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start = Process.clock_gettime(Process::CLOCK_MONOTONIC)
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yield
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observation.success = true
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observation
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ensure
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observation.walltime = Process.clock_gettime(Process::CLOCK_MONOTONIC) - start
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on_each_observer(observers) { |observer| observer.after }
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on_each_observer(observers) { |observer| observer.record }
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record_observation(observation, destination_dir: per_migration_result_dir)
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end
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private
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attr_reader :observer_classes
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def record_observation(observation, destination_dir:)
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stats_file_location = File.join(destination_dir, STATS_FILENAME)
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File.write(stats_file_location, observation.to_json)
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end
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def on_each_observer(observers, &block)
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observers.each do |observer|
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yield observer
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rescue StandardError => e
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Gitlab::AppLogger.error("Migration observer #{observer.class} failed with: #{e}")
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end
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end
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end
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end
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end
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end
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