Class: Memcached::Client
- Inherits:
-
Connection
- Object
- EventMachine::Connection
- Connection
- Memcached::Client
- Defined in:
- lib/remcached/client.rb
Constant Summary
Constants inherited from Connection
Memcached::Connection::KEEPALIVE_INTERVAL, Memcached::Connection::RECEIVE_TIMEOUT, Memcached::Connection::RECONNECT_DELAY, Memcached::Connection::RECONNECT_JITTER
Instance Method Summary collapse
- #post_init ⇒ Object
-
#receive_packet(response) ⇒ Object
memcached responses possess the same order as their corresponding requests.
- #send_keepalive ⇒ Object
- #send_request(pkt, &callback) ⇒ Object
-
#stats(contents = {}, &callback) ⇒ Object
Callback will be called multiple times.
- #unbind ⇒ Object
Methods inherited from Connection
connect, #connected?, #connection_completed, #keepalive, #receive_data, #reconnect, #send_packet
Instance Method Details
#post_init ⇒ Object
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# File 'lib/remcached/client.rb', line 93 def post_init super @opaque_counter = 0 @pending = [] end |
#receive_packet(response) ⇒ Object
memcached responses possess the same order as their corresponding requests. Therefore quiet requests that have not yielded responses will be dropped silently to free memory from @pending
When a callback has been fired and returned :proceed
without a succeeding packet, we still keep it referenced around for commands such as STAT which has multiple response packets.
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# File 'lib/remcached/client.rb', line 127 def receive_packet(response) pending_pos = nil pending_callback = nil @pending.each_with_index do |(pending_opaque,pending_cb),i| if response[:opaque] == pending_opaque pending_pos = i pending_callback = pending_cb break end end if pending_pos @pending = @pending[pending_pos..-1] begin if pending_callback.call(response) != :proceed @pending.shift end rescue Exception => e $stderr.puts "#{e.class}: #{e}\n" + e.backtrace.join("\n") end end end |
#send_keepalive ⇒ Object
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# File 'lib/remcached/client.rb', line 150 def send_keepalive send_request Request::NoOp.new end |
#send_request(pkt, &callback) ⇒ Object
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# File 'lib/remcached/client.rb', line 107 def send_request(pkt, &callback) @opaque_counter += 1 @opaque_counter %= 1 << 32 pkt[:opaque] = @opaque_counter send_packet pkt if callback @pending << [@opaque_counter, callback] end end |
#stats(contents = {}, &callback) ⇒ Object
Callback will be called multiple times
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# File 'lib/remcached/client.rb', line 155 def stats(contents={}, &callback) send_request Request::Stats.new(contents) do |result| callback.call result if result[:status] == Errors::NO_ERROR && result[:key] != '' :proceed end end end |
#unbind ⇒ Object
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# File 'lib/remcached/client.rb', line 99 def unbind super @pending.each do |opaque, callback| callback.call :status => Errors::DISCONNECTED end @pending = [] end |