54 lines
2.1 KiB
Ruby
54 lines
2.1 KiB
Ruby
# frozen_string_literal: true
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def log_pool_size(db, previous_pool_size, current_pool_size)
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log_message = ["#{db} connection pool size: #{current_pool_size}"]
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if previous_pool_size && current_pool_size > previous_pool_size
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log_message << "(increased from #{previous_pool_size} to match thread count)"
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end
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Gitlab::AppLogger.debug(log_message.join(' '))
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end
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Gitlab.ee do
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# We need to initialize the Geo database before
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# setting the Geo DB connection pool size.
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if File.exist?(Rails.root.join('config/database_geo.yml'))
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Rails.application.configure do
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config.geo_database = config_for(:database_geo)
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end
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end
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end
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# Because of the way Ruby on Rails manages database connections, it is
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# important that we have at least as many connections as we have
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# threads. While there is a 'pool' setting in database.yml, it is not
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# very practical because you need to maintain it in tandem with the
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# number of application threads. Because of this we override the number
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# of allowed connections in the database connection pool based on the
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# configured number of application threads.
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#
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# Gitlab::Runtime.max_threads is the number of "user facing" application
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# threads the process has been configured with. We also have auxiliary
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# threads that use database connections. Because it is not practical to
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# keep an accurate count of the number auxiliary threads as the
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# application evolves over time, we just add a fixed headroom to the
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# number of user-facing threads. It is OK if this number is too large
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# because connections are instantiated lazily.
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headroom = (ENV["DB_POOL_HEADROOM"].presence || 10).to_i
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calculated_pool_size = Gitlab::Runtime.max_threads + headroom
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db_config = Gitlab::Database.config ||
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Rails.application.config.database_configuration[Rails.env]
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db_config['pool'] = calculated_pool_size
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ActiveRecord::Base.establish_connection(db_config)
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Gitlab.ee do
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if Gitlab::Runtime.sidekiq? && Gitlab::Geo.geo_database_configured?
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Rails.configuration.geo_database['pool'] = calculated_pool_size
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Geo::TrackingBase.establish_connection(Rails.configuration.geo_database)
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end
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end
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