Class: Gitlab::Database::Partitioning::PartitionManager

Inherits:
Object
  • Object
show all
Includes:
MigrationHelpers::LooseForeignKeyHelpers, Utils::StrongMemoize
Defined in:
lib/gitlab/database/partitioning/partition_manager.rb

Constant Summary collapse

UnsafeToDetachPartitionError = 
Class.new(StandardError)
LEASE_TIMEOUT = 
1.hour
STATEMENT_TIMEOUT = 
1.hour
MANAGEMENT_LEASE_KEY = 
'database_partition_management_%s'
RETAIN_DETACHED_PARTITIONS_FOR = 
1.week
MAX_PARTITION_SIZE = 
150.gigabytes

Constants included from MigrationHelpers::LooseForeignKeyHelpers

MigrationHelpers::LooseForeignKeyHelpers::INSERT_FUNCTION_NAME, MigrationHelpers::LooseForeignKeyHelpers::INSERT_FUNCTION_NAME_OVERRIDE_TABLE

Instance Method Summary collapse

Methods included from MigrationHelpers::LooseForeignKeyHelpers

#has_loose_foreign_key?, #track_record_deletions, #track_record_deletions_override_table_name, #untrack_record_deletions

Methods included from SchemaHelpers

#assert_not_in_transaction_block, #create_comment, #create_trigger, #create_trigger_function, #drop_function, #drop_trigger, #find_all_id_columns_sql, #function_exists?, #object_name, #reset_all_trigger_functions, #reset_trigger_function, #tmp_table_name, #trigger_exists?

Constructor Details

#initialize(model, connection: nil) ⇒ PartitionManager

Returns a new instance of PartitionManager.



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# File 'lib/gitlab/database/partitioning/partition_manager.rb', line 18

def initialize(model, connection: nil)
  @model = model
  @connection = connection || model.connection
  @connection_name = @connection.pool.db_config.name
end

Instance Method Details

#execute(sql) ⇒ Object 



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# File 'lib/gitlab/database/partitioning/partition_manager.rb', line 24

def execute(sql)
  @connection.execute(sql)
end

#sync_partitions(analyze: true) ⇒ Object 



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# File 'lib/gitlab/database/partitioning/partition_manager.rb', line 28

def sync_partitions(analyze: true)
  return skip_syncing_partitions unless table_partitioned?

  Gitlab::AppLogger.info(
    message: "Checking state of dynamic postgres partitions",
    table_name: model.table_name,
    connection_name: @connection_name
  )

  only_with_exclusive_lease(model, lease_key: MANAGEMENT_LEASE_KEY) do
    model.partitioning_strategy.validate_and_fix

    partitions_to_create = missing_partitions
    partitions_to_detach = extra_partitions

    create(partitions_to_create) unless partitions_to_create.empty?
    detach(partitions_to_detach) unless partitions_to_detach.empty?

    run_analyze_on_partitioned_table if analyze
  end
rescue ArgumentError => e
  Gitlab::ErrorTracking.track_and_raise_for_dev_exception(e)
rescue StandardError => e
  Gitlab::AppLogger.error(
    message: "Failed to create / detach partition(s)",
    table_name: model.table_name,
    exception_class: e.class,
    exception_message: e.message,
    connection_name: @connection_name
  )
end