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# frozen_string_literal: true
module Ci
class UpdateBuildQueueService
InvalidQueueTransition = Class.new(StandardError)
attr_reader :metrics
def initialize(metrics = ::Gitlab::Ci::Queue::Metrics)
@metrics = metrics
end
##
# Add a build to the pending builds queue
#
def push(build, transition)
return unless maintain_pending_builds_queue?
raise InvalidQueueTransition unless transition.to == 'pending'
transition.within_transaction do
result = build.create_queuing_entry!
unless result.empty?
metrics.increment_queue_operation(:build_queue_push)
result.rows.dig(0, 0)
end
end
end
##
# Remove a build from the pending builds queue
#
def pop(build, transition)
return unless maintain_pending_builds_queue?
raise InvalidQueueTransition unless transition.from == 'pending'
transition.within_transaction do
removed = build.all_queuing_entries.delete_all
if removed > 0
metrics.increment_queue_operation(:build_queue_pop)
build.id
end
end
end
##
# Add shared runner build tracking entry (used for queuing).
#
def track(build, transition)
return unless maintain_pending_builds_queue?
return unless build.shared_runner_build?
raise InvalidQueueTransition unless transition.to == 'running'
transition.within_transaction do
result = ::Ci::RunningBuild.upsert_shared_runner_build!(build)
unless result.empty?
metrics.increment_queue_operation(:shared_runner_build_new)
result.rows.dig(0, 0)
end
end
end
##
# Remove a runtime build tracking entry for a shared runner build (used for
# queuing).
#
def untrack(build, transition)
return unless maintain_pending_builds_queue?
return unless build.shared_runner_build?
raise InvalidQueueTransition unless transition.from == 'running'
transition.within_transaction do
removed = build.all_runtime_metadata.delete_all
if removed > 0
metrics.increment_queue_operation(:shared_runner_build_done)
build.id
end
end
end
##
# Unblock runner associated with given project / build
#
def tick(build)
tick_for(build, build.project.all_available_runners)
end
private
def tick_for(build, runners)
runners = runners.with_recent_runner_queue
runners = runners.with_tags
metrics.observe_active_runners(-> { runners.to_a.size })
runners.each do |runner|
metrics.increment_runner_tick(runner)
runner.pick_build!(build)
end
end
def maintain_pending_builds_queue?
::Ci::PendingBuild.maintain_denormalized_data?
end
end
end
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