Module: ActiveRecord::ConnectionAdapters::QueryCache::ConnectionPoolConfiguration

Included in:
ConnectionPool
Defined in:
lib/active_record/connection_adapters/abstract/query_cache.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#checkout_and_verify(connection) ⇒ Object 



96
97
98
99
100
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 96

def checkout_and_verify(connection)
  super
  connection.query_cache ||= query_cache
  connection
end

#clear_query_cache ⇒ Object 



139
140
141
142
143
144
145
146
147
148
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 139

def clear_query_cache
  if @pinned_connection
    # With transactional fixtures, and especially systems test
    # another thread may use the same connection, but with a different
    # query cache. So we must clear them all.
    @thread_query_caches.each_value(&:clear)
  else
    query_cache.clear
  end
end

#dirties_query_cache ⇒ Object 



135
136
137
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 135

def dirties_query_cache
  query_cache.dirties
end

#disable_query_cache(dirties: true) ⇒ Object

Disable the query cache within the block.



103
104
105
106
107
108
109
110
111
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 103

def disable_query_cache(dirties: true)
  cache = query_cache
  old_enabled, cache.enabled, old_dirties, cache.dirties = cache.enabled, false, cache.dirties, dirties
  begin
    yield
  ensure
    cache.enabled, cache.dirties = old_enabled, old_dirties
  end
end

#disable_query_cache! ⇒ Object 



127
128
129
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 127

def disable_query_cache!
  query_cache.enabled, query_cache.dirties = false, true
end

#enable_query_cache ⇒ Object 



113
114
115
116
117
118
119
120
121
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 113

def enable_query_cache
  cache = query_cache
  old_enabled, cache.enabled, old_dirties, cache.dirties = cache.enabled, true, cache.dirties, true
  begin
    yield
  ensure
    cache.enabled, cache.dirties = old_enabled, old_dirties
  end
end

#enable_query_cache! ⇒ Object 



123
124
125
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 123

def enable_query_cache!
  query_cache.enabled, query_cache.dirties = true, true
end

#initialize ⇒ Object 



82
83
84
85
86
87
88
89
90
91
92
93
94
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 82

def initialize(...)
  super
  @thread_query_caches = Concurrent::Map.new(initial_capacity: @size)
  @query_cache_max_size = \
    case query_cache = db_config&.query_cache
    when 0, false
      nil
    when Integer
      query_cache
    when nil
      DEFAULT_SIZE
    end
end

#query_cache ⇒ Object 



150
151
152
153
154
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 150

def query_cache
  @thread_query_caches.compute_if_absent(ActiveSupport::IsolatedExecutionState.context) do
    Store.new(@query_cache_max_size)
  end
end

#query_cache_enabled ⇒ Object 



131
132
133
 
# File 'lib/active_record/connection_adapters/abstract/query_cache.rb', line 131

def query_cache_enabled
  query_cache.enabled
end