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# frozen_string_literal: true
module Gitlab
module Database
module Migrations
class Instrumentation
attr_reader :observations
def initialize(observers = ::Gitlab::Database::Migrations::Observers.all_observers)
@observers = observers
@observations = []
end
def observe(migration, &block)
observation = Observation.new(migration)
observation.success = true
exception = nil
on_each_observer { |observer| observer.before }
observation.walltime = Benchmark.realtime do
yield
rescue => e
exception = e
observation.success = false
end
on_each_observer { |observer| observer.after }
on_each_observer { |observer| observer.record(observation) }
record_observation(observation)
raise exception if exception
observation
end
private
attr_reader :observers
def record_observation(observation)
@observations << observation
end
def on_each_observer(&block)
observers.each do |observer|
yield observer
rescue => e
Gitlab::AppLogger.error("Migration observer #{observer.class} failed with: #{e}")
end
end
end
end
end
end
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