module SwitchPoint::Connection
Constants
- DESTRUCTIVE_METHODS
See ActiveRecord::ConnectionAdapters::QueryCache
Public Class Methods
handle_base_connection(conn)
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# File lib/switch_point/connection.rb, line 23 def self.handle_base_connection(conn) switch_points = conn.pool.spec.config[:switch_points] if switch_points switch_points.each do |switch_point| proxy = ProxyRepository.find(switch_point[:name]) if switch_point[:mode] != :writable raise Error.new("ActiveRecord::Base's switch_points must be writable, but #{switch_point[:name]} is #{switch_point[:mode]}") end purge_readonly_query_cache(proxy) end end end
handle_generated_connection(conn, parent_method, method_name, *args, &block)
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# File lib/switch_point/connection.rb, line 37 def self.handle_generated_connection(conn, parent_method, method_name, *args, &block) switch_point = conn.pool.spec.config[:switch_point] if switch_point proxy = ProxyRepository.find(switch_point[:name]) case switch_point[:mode] when :readonly if SwitchPoint.config.auto_writable? proxy_to_writable(proxy, method_name, *args, &block) else raise ReadonlyError.new("#{switch_point[:name]} is readonly, but destructive method #{method_name} is called") end when :writable purge_readonly_query_cache(proxy) parent_method.call(*args, &block) else raise Error.new("Unknown mode #{switch_point[:mode]} is given with #{name}") end else parent_method.call(*args, &block) end end
proxy_to_writable(proxy, method_name, *args, &block)
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# File lib/switch_point/connection.rb, line 59 def self.proxy_to_writable(proxy, method_name, *args, &block) proxy.with_writable do proxy.connection.send(method_name, *args, &block) end end
purge_readonly_query_cache(proxy)
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# File lib/switch_point/connection.rb, line 65 def self.purge_readonly_query_cache(proxy) proxy.with_readonly do proxy.connection.clear_query_cache end end