debian-mirror-gitlab/db/migrate/20161019190736_migrate_sidekiq_queues_from_default.rb

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require 'json'
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
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class MigrateSidekiqQueuesFromDefault < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
DOWNTIME = true
DOWNTIME_REASON = <<-EOF
Moving Sidekiq jobs from queues requires Sidekiq to be stopped. Not stopping
Sidekiq will result in the loss of jobs that are scheduled after this
migration completes.
EOF
disable_ddl_transaction!
# Jobs for which the queue names have been changed (e.g. multiple workers
# using the same non-default queue).
#
# The keys are the old queue names, the values the jobs to move and their new
# queue names.
RENAMED_QUEUES = {
gitlab_shell: {
'GitGarbageCollectorWorker' => :git_garbage_collector,
'ProjectExportWorker' => :project_export,
'RepositoryForkWorker' => :repository_fork,
'RepositoryImportWorker' => :repository_import
},
project_web_hook: {
'ProjectServiceWorker' => :project_service
},
incoming_email: {
'EmailReceiverWorker' => :email_receiver
},
mailers: {
'EmailsOnPushWorker' => :emails_on_push
},
default: {
'AdminEmailWorker' => :cronjob,
'BuildCoverageWorker' => :build,
'BuildEmailWorker' => :build,
'BuildFinishedWorker' => :build,
'BuildHooksWorker' => :build,
'BuildSuccessWorker' => :build,
'ClearDatabaseCacheWorker' => :clear_database_cache,
'DeleteUserWorker' => :delete_user,
'ExpireBuildArtifactsWorker' => :cronjob,
'ExpireBuildInstanceArtifactsWorker' => :expire_build_instance_artifacts,
'GroupDestroyWorker' => :group_destroy,
'ImportExportProjectCleanupWorker' => :cronjob,
'IrkerWorker' => :irker,
'MergeWorker' => :merge,
'NewNoteWorker' => :new_note,
'PipelineHooksWorker' => :pipeline,
'PipelineMetricsWorker' => :pipeline,
'PipelineProcessWorker' => :pipeline,
'PipelineSuccessWorker' => :pipeline,
'PipelineUpdateWorker' => :pipeline,
'ProjectCacheWorker' => :project_cache,
'ProjectDestroyWorker' => :project_destroy,
'PruneOldEventsWorker' => :cronjob,
'RemoveExpiredGroupLinksWorker' => :cronjob,
'RemoveExpiredMembersWorker' => :cronjob,
'RepositoryArchiveCacheWorker' => :cronjob,
'RepositoryCheck::BatchWorker' => :cronjob,
'RepositoryCheck::ClearWorker' => :repository_check,
'RepositoryCheck::SingleRepositoryWorker' => :repository_check,
'RequestsProfilesWorker' => :cronjob,
'StuckCiBuildsWorker' => :cronjob,
'UpdateMergeRequestsWorker' => :update_merge_requests
}
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}.freeze
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def up
Sidekiq.redis do |redis|
RENAMED_QUEUES.each do |queue, jobs|
migrate_from_queue(redis, queue, jobs)
end
end
end
def down
Sidekiq.redis do |redis|
RENAMED_QUEUES.each do |dest_queue, jobs|
jobs.each do |worker, from_queue|
migrate_from_queue(redis, from_queue, worker => dest_queue)
end
end
end
end
def migrate_from_queue(redis, queue, job_mapping)
while job = redis.lpop("queue:#{queue}")
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payload = JSON.parse(job)
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new_queue = job_mapping[payload['class']]
# If we have no target queue to migrate to we're probably dealing with
# some ancient job for which the worker no longer exists. In that case
# there's no sane option we can take, other than just dropping the job.
next unless new_queue
payload['queue'] = new_queue
redis.lpush("queue:#{new_queue}", JSON.dump(payload))
end
end
end