Module: Semian::Redis

Includes:
Adapter
Defined in:
lib/semian/redis.rb

Constant Summary collapse

ResourceBusyError = 
::Redis::ResourceBusyError
CircuitOpenError = 
::Redis::CircuitOpenError
ResolveError = 
::Redis::ResolveError

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Adapter

#clear_semian_resource, #semian_resource

Class Method Details

.included(base) ⇒ Object

The naked methods are exposed as ‘raw_query` and `raw_connect` for instrumentation purpose



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# File 'lib/semian/redis.rb', line 58

def self.included(base)
  base.send(:alias_method, :raw_io, :io)
  base.send(:remove_method, :io)

  base.send(:alias_method, :raw_connect, :connect)
  base.send(:remove_method, :connect)
end

Instance Method Details

#connect ⇒ Object 



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# File 'lib/semian/redis.rb', line 82

def connect
  acquire_semian_resource(adapter: :redis, scope: :connection) do
    begin
      raw_connect
    rescue SocketError, RuntimeError => e
      raise ResolveError.new(semian_identifier) if e.message =~ /(can't resolve)|(name or service not known)/i
      raise
    end
  end
end

#io(&block) ⇒ Object 



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# File 'lib/semian/redis.rb', line 74

def io(&block)
  acquire_semian_resource(adapter: :redis, scope: :query) do
    reply = raw_io(&block)
    raise_if_out_of_memory(reply)
    reply
  end
end

#semian_identifier ⇒ Object 



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# File 'lib/semian/redis.rb', line 66

def semian_identifier
  @semian_identifier ||= begin
    name = semian_options && semian_options[:name]
    name ||= "#{location}/#{db}"
    :"redis_#{name}"
  end
end