Class: Gitlab::Database::TablesLocker

Inherits:
Object
  • Object
show all
Defined in:
lib/gitlab/database/tables_locker.rb

Constant Summary collapse

GITLAB_SCHEMAS_TO_IGNORE = 
i[gitlab_embedding gitlab_geo gitlab_jh].freeze

Instance Method Summary collapse

Constructor Details

#initialize(logger: nil, dry_run: false, include_partitions: true, options: {}) ⇒ TablesLocker

Returns a new instance of TablesLocker.



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# File 'lib/gitlab/database/tables_locker.rb', line 8

def initialize(logger: nil, dry_run: false, include_partitions: true, options: {})
  @logger = logger
  @dry_run = dry_run
  @result = []
  @include_partitions = include_partitions
  @scope_to_database = options[:scope_to_database].to_s

  validate_scopes
end

Instance Method Details

#lock_writes ⇒ Object

It locks the tables on the database where they don't belong. Also it unlocks the tables on the database where they belong



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# File 'lib/gitlab/database/tables_locker.rb', line 35

def lock_writes
  Gitlab::Database::EachDatabase.each_connection(include_shared: false) do |connection, database_name|
    next if skip_connection?(database_name)

    schemas_for_connection = Gitlab::Database.gitlab_schemas_for_connection(connection)

    tables_to_lock(connection) do |table_name, schema_name|
      # TODO: https://gitlab.com/gitlab-org/gitlab/-/issues/366834
      next if schema_name.in? GITLAB_SCHEMAS_TO_IGNORE

      if schemas_for_connection.include?(schema_name)
        unlock_writes_on_table(table_name, connection, database_name)
      else
        lock_writes_on_table(table_name, connection, database_name)
      end
    end
  end

  @result
end

#unlock_writes ⇒ Object 



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

def unlock_writes
  Gitlab::Database::EachDatabase.each_connection do |connection, database_name|
    next if skip_connection?(database_name)

    tables_to_lock(connection) do |table_name, schema_name|
      # TODO: https://gitlab.com/gitlab-org/gitlab/-/issues/366834
      next if schema_name.in? GITLAB_SCHEMAS_TO_IGNORE

      unlock_writes_on_table(table_name, connection, database_name)
    end
  end

  @result
end