Messenger

Question 1

How can you ensure no message is being handled syncronously?

Answer 1

Add a async transport in the config and use the “*“-wildcard inside the routing for the async transport. Like this, all messages will be handled by the async transport.

Question 2

How can a message be dispatched to multiple senders?

Answer 2

Add both senders inside the config for the specific message:

'My\Message\ToBeSentToTwoSenders': [async, audit]

Question 3

How can the transport a message is using be changed at runtime?

Answer 3

Add the “TransportNamesStamp” to the envelope of the message

Question 4

How can 3rd-party transports be used?

Answer 4

Install the extension via composer:

composer require symfony/redis-messenger

composer require symfony/redis-messenger

and so on

Question 5

How can the “in memory” transport be used?

Answer 5

framework:
    messenger:
        transports:
            async_priority_normal: 'in-memory://'

Question 6

How long does the in-memory transport remain?

Answer 6

Just during the lifetime of the request

Question 7

How can symfony-commands be run in an easy way via a message?

Answer 7

use the RunCommandMessage

$this->bus->dispatch(new RunCommandMessage('app:my-cache:clean-up --dir=var/temp'))

Question 8

How can external processes be run via a message?

Answer 8

use the RunProcessMessage

$this->bus->dispatch(new RunProcessMessage(['rm', '-rf', 'var/log/temp/*'], cwd: '/my/custom/working-dir'));

Question 9

How can you ping external webservices via a message?

Answer 9

use the PingWebhookMessage

$this->bus->dispatch(new PingWebhookMessage('GET', 'https://example.com/status'));