[Feature] pecl-amqp integration

[redpanda]

Describe the feature you'd like

As a developer, I'd like to have traces for application that use the pecl-amqp extension.

Is your feature request related to a problem?

Some PHP applications that uses the php-amqplib library are natively instrumented (thanks to this request), but it is not the case on other applications that uses pecl-amqp extension.

Describe alternatives you've considered

I considered to implement an custom instrumentation for pecl-amqp extension, but I would like to know if this feature could be integrated in the dd-trace-php package.

About the feature considered, I'm seeing something similar to the native php-amqlib instrumentation, we could instrumented the following methods:

AMQPExchange

• AMQPExchange::declareExchange ?
• AMQPExchange::declare
• AMQPExchange::publish

AMQPQueue

• AMQPQueue::ack
• AMQPQueue::bind
• AMQPQueue::cancel
• AMQPQueue::consume
• AMQPQueue::declareQueue?
• AMQPQueue::declare
• AMQPQueue::get
• AMQPQueue::nack

AMQPConnection

• AMQPConnection::connect
• AMQPConnection::pconnect
• AMQPConnection::reconnect

Additional context

Thank you in advance for considering the request feature and let me know if we can give a hand to develop the feature. 👍

[bwoebi]

Hey @redpanda,

Would be certainly nice to have. It's right now not on top of the priority list, but we wouldn't object to a PR :-)

About the to be instrumented methods, it should basically mirror what the php-amqplib integration also instruments. So at a first glance, the list of to be instrumented methods looks correct.

It would need a comprehensive testsuite as well though, like https://github.com/DataDog/dd-trace-php/blob/master/tests/Integrations/AMQP/AMQPTest.php.