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
|
# frozen_string_literal: true
module LooseForeignKeys
class BatchCleanerService
def initialize(parent_klass:, deleted_parent_records:, modification_tracker: LooseForeignKeys::ModificationTracker.new, models_by_table_name:)
@parent_klass = parent_klass
@deleted_parent_records = deleted_parent_records
@modification_tracker = modification_tracker
@models_by_table_name = models_by_table_name
@deleted_records_counter = Gitlab::Metrics.counter(
:loose_foreign_key_processed_deleted_records,
'The number of processed loose foreign key deleted records'
)
end
def execute
parent_klass.loose_foreign_key_definitions.each do |foreign_key_definition|
run_cleaner_service(foreign_key_definition, with_skip_locked: true)
break if modification_tracker.over_limit?
run_cleaner_service(foreign_key_definition, with_skip_locked: false)
break if modification_tracker.over_limit?
end
return if modification_tracker.over_limit?
# At this point, all associations are cleaned up, we can update the status of the parent records
update_count = LooseForeignKeys::DeletedRecord.mark_records_processed(deleted_parent_records)
deleted_records_counter.increment({ table: parent_klass.table_name, db_config_name: LooseForeignKeys::DeletedRecord.connection.pool.db_config.name }, update_count)
end
private
attr_reader :parent_klass, :deleted_parent_records, :modification_tracker, :models_by_table_name, :deleted_records_counter
def record_result(cleaner, result)
if cleaner.async_delete?
modification_tracker.add_deletions(result[:table], result[:affected_rows])
elsif cleaner.async_nullify?
modification_tracker.add_updates(result[:table], result[:affected_rows])
end
end
def run_cleaner_service(foreign_key_definition, with_skip_locked:)
cleaner = CleanerService.new(
model: models_by_table_name.fetch(foreign_key_definition.to_table),
foreign_key_definition: foreign_key_definition,
deleted_parent_records: deleted_parent_records,
with_skip_locked: with_skip_locked
)
loop do
result = cleaner.execute
record_result(cleaner, result)
break if modification_tracker.over_limit? || result[:affected_rows] == 0
end
end
end
end
|
