32 lines
1 KiB
Ruby
32 lines
1 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Database
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##
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# This class is used to make it possible to ensure read consistency in
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# GitLab EE without the need of overriding a lot of methods / classes /
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# classs.
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#
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# This is a CE class that does nothing in CE, because database load
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# balancing is EE-only feature, but you can still use it in CE. It will
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# start ensuring read consistency once it is overridden in EE.
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#
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# Using this class in CE helps to avoid creeping discrepancy between CE /
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# EE only to force usage of the primary database in EE.
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#
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class Consistency
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##
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# In CE there is no database load balancing, so all reads are expected to
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# be consistent by the ACID guarantees of a single PostgreSQL instance.
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#
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# This method is overridden in EE.
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#
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def self.with_read_consistency(&block)
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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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::Gitlab::Database::Consistency.singleton_class.prepend_if_ee('EE::Gitlab::Database::Consistency')
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