blob: f73f8fd751be05a13b372e5321e8a53a5fc2dcf5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
# frozen_string_literal: true
module Database
module BatchedBackgroundMigration
module SingleDatabaseWorker
extend ActiveSupport::Concern
include ApplicationWorker
include CronjobQueue # rubocop:disable Scalability/CronWorkerContext
include Gitlab::Utils::StrongMemoize
LEASE_TIMEOUT_MULTIPLIER = 3
MINIMUM_LEASE_TIMEOUT = 10.minutes.freeze
INTERVAL_VARIANCE = 5.seconds.freeze
included do
data_consistency :always
feature_category :database
idempotent!
end
class_methods do
# :nocov:
def tracking_database
raise NotImplementedError, "#{self.name} does not implement #{__method__}"
end
# :nocov:
def enabled?
return false if Feature.enabled?(:disallow_database_ddl_feature_flags, type: :ops)
Feature.enabled?(:execute_batched_migrations_on_schedule, type: :ops)
end
def lease_key
name.demodulize.underscore
end
end
def perform
unless base_model
Sidekiq.logger.info(
class: self.class.name,
database: tracking_database,
message: 'skipping migration execution for unconfigured database')
return
end
if shares_db_config?
Sidekiq.logger.info(
class: self.class.name,
database: tracking_database,
message: 'skipping migration execution for database that shares database configuration with another database')
return
end
Gitlab::Database::SharedModel.using_connection(base_model.connection) do
break unless self.class.enabled?
migrations = Gitlab::Database::BackgroundMigration::BatchedMigration
.active_migrations_distinct_on_table(connection: base_model.connection, limit: max_running_migrations).to_a
queue_migrations_for_execution(migrations) if migrations.any?
end
end
private
def max_running_migrations
execution_worker_class.max_running_jobs
end
def tracking_database
self.class.tracking_database
end
def queue_migrations_for_execution(migrations)
jobs_arguments = migrations.map { |migration| [tracking_database.to_s, migration.id] }
execution_worker_class.perform_with_capacity(jobs_arguments)
end
def base_model
strong_memoize(:base_model) do
Gitlab::Database.database_base_models[tracking_database]
end
end
def shares_db_config?
base_model && Gitlab::Database.db_config_share_with(base_model.connection_db_config).present?
end
def with_exclusive_lease(interval)
timeout = [interval * LEASE_TIMEOUT_MULTIPLIER, MINIMUM_LEASE_TIMEOUT].max
lease = Gitlab::ExclusiveLease.new(self.class.lease_key, timeout: timeout)
yield if lease.try_obtain
ensure
lease&.cancel
end
end
end
end
|
