OpenWireMessageConverter::toAMQMessage on bytes messages is lazy
allocating a write buffer with a default size of 1024 even when
it won't be used to write anything.
It avoid an useless allocation by reducing it to new byte[0].
messageAcknowledged plugin callback methods
Knowing the consumer that expired or acked a message (if available) is
useful and right now a message reference only contains a consumer id
which by itself is not unique so the actual consumer needs to be passed
It includes:
- Message References: no longer uses boxed primitives and AtomicInteger
- Node: intrusive nodes no longer need a reference field holding itself
- RefCountMessage: no longer uses AtomicInteger, but AtomicIntegerFieldUpdater
connection
To prevent a socket from hanging open by a bad client the broker should
make sure to stop the transport if a connection attempt fails by an
OpenWire client
Check for AMQSession being null before handling various TX state checks
in order to ensure the correct errors are thrown and TX rollback is
handled properly.
OpenWireFormat instances are shared between OpenWire connections/sessions/consumers, preventing the clients to scale due to the synchronized marshal/unmarshal on it.
It includes:
- direct transport buffer pooling
- groupId SimpleString pooling
- clientId SimpleString pooling
- reduced ActiveMQDestination[] and AtomicLong allocations on AMQSession:send
- reduced ActiveMQDestination allocations
- refactored shouldBlockProducer path of AMQPSession::send to reduce method size
- exclusive OpenWireFormat per session and connection (in/out) to avoid contention
- refactored trace log to favour inlining
- changed lastSent volatile set into lazy set to avoid full barrier cost on x86
- stateless OpenWireMessageConverter
- send's lock removal thanks to thread-safe NettyConnection
Adding new metrics for tracking message counts and sizes on a Queue.
This includes tracking metrics for pending, delivering and scheduled
messages. The paging store also tracks message size now.
* Move byte util code into ByteUtil
* Re-use the new equals method in SimpleString
* Apply same pools/interners to client decode
* Create String to SimpleString pools/interners for property access via String keys (producer and consumer benefits)
* Lazy init the pools on withing the get methods of CoreMessageObjectPools to get the specific pool, to avoid having this scattered every where.
* reduce SimpleString creation in conversion to/from core message methods with JMS wrapper.
* reduce SimpleString creation in conversion to/from Core in OpenWire, AMQP, MQTT.
When openwire client uses compressed option to send messages
(jms.useCompression=true) openwire client failed to receive them.
The reason is in OpenwireMessageConverter.toAMQMessage():
1. message.setContent() should be called after setting properties
(It will cause the compressed content to decompressed before delivering to clients)
2. message.onSend() should not be called here (it should be used
by producers. If used here it changes the internal flags of the
message and cause receive to fail).
Openwire clients create consumers to advisory topics to receive
notifications. As a result there are internal queues created
on advisory topics. Those consumer shouldn't be exposed via
management APIs which are used by the Console
To fix that the broker doesn't register any queues from
advisory addresses.
Also refactors a code to remove Openwire specific contants
from AddressInfo class.
If message senders and receivers uses different
wireformat.tightEncodingEnabled options, broker will get marshalling
problem. This is because when openwire messages are converted to
core messages, and later these core messages converted to openwire
messages, the broker uses a mashaller that comes with the connection
used to carry the messages.
For example, if a producer sents a message using option "wireformat
.tightEncodingEnabled=false" and a receiver tries to receive it
using 'true' for the same option, it'll never get it because the
broker will fail to use a "tight encoding" marshaller to
decode a 'loose encoded' message.
To fix the problem, we always use 'tight encoding' for internal
message converters.
Remove some redundant code in the processing of the OpenWire Destination
name, both in the topic handler and in the method in general the
destination name only needs to be converted once and only one
SimpleString instance needs to be created from that which will then feed
all the places that either the String form or the SimpleString form of
the result is needed.
By default, every openwire connection will create a queue
under the multicast address ActiveMQ.Advisory.TempQueue.
If a openwire client is create temporary queues these queues
will fill up with messages for as long as the associated
openwire connection is alive. It appears these messages
do not get consumed from the queues.
The reason behind is that advisory messages don't require
acknowledgement so the messages stay at the queue.
Clebert Suconic
Benjamin Graf
Justin Bertram
Francesco Nigro
Christopher L. Shannon (cshannon)
Stanislav Knot
Timothy Bish
gtully
Michael André Pearce
Howard Gao
Pat Fox
saurabhrai