84 lines
2.9 KiB
Ruby
84 lines
2.9 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Database
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module EachDatabase
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class << self
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def each_database_connection(only: nil, include_shared: true)
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selected_names = Array.wrap(only)
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base_models = select_base_models(selected_names)
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base_models.each_pair do |connection_name, model|
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next if !include_shared && Gitlab::Database.db_config_share_with(model.connection_db_config)
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connection = model.connection
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with_shared_connection(connection, connection_name) do
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yield connection, connection_name
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end
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end
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end
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def each_model_connection(models, only_on: nil, &blk)
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selected_databases = Array.wrap(only_on).map(&:to_sym)
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models.each do |model|
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# If model is shared, iterate all available base connections
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# Example: `LooseForeignKeys::DeletedRecord`
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if model < ::Gitlab::Database::SharedModel
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with_shared_model_connections(model, selected_databases, &blk)
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else
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with_model_connection(model, selected_databases, &blk)
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end
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end
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end
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private
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def select_base_models(names)
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base_models = Gitlab::Database.database_base_models_with_gitlab_shared
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return base_models if names.empty?
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names.each_with_object(HashWithIndifferentAccess.new) do |name, hash|
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raise ArgumentError, "#{name} is not a valid database name" unless base_models.key?(name)
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hash[name] = base_models[name]
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end
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end
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def with_shared_model_connections(shared_model, selected_databases, &blk)
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Gitlab::Database.database_base_models_with_gitlab_shared.each_pair do |connection_name, connection_model|
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if shared_model.limit_connection_names
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next unless shared_model.limit_connection_names.include?(connection_name.to_sym)
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end
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next if selected_databases.present? && !selected_databases.include?(connection_name.to_sym)
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with_shared_connection(connection_model.connection, connection_name) do
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yield shared_model, connection_name
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end
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end
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end
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def with_model_connection(model, selected_databases, &blk)
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connection_name = model.connection_db_config.name
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return if selected_databases.present? && !selected_databases.include?(connection_name.to_sym)
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with_shared_connection(model.connection, connection_name) do
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yield model, connection_name
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end
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end
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def with_shared_connection(connection, connection_name)
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Gitlab::Database::SharedModel.using_connection(connection) do
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Gitlab::AppLogger.debug(message: 'Switched database connection', connection_name: connection_name)
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yield
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end
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end
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end
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end
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end
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end
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