PHP: Deprecation message for "return_immediately" is thrown which is impossible to fix

[bshaffer]

See googleapis/google-cloud-php#5350

@pkruithof has reported the following, which seems to be an error in the Protobuf package. The function getReturnImmediately is being called internally without any way (as far as we can tell) to prevent it from happening:

Because the return_immediately option has been deprecated some time ago, this produces a deprecation log on every pull request:

[2022-06-17T06:57:33.459907+00:00] deprecation.INFO: User Deprecated: return_immediately is deprecated. {"exception":"[object] (ErrorException(code: 0): User Deprecated: return_immediately is deprecated. at /app/vendor/google/cloud-pubsub/src/V1/PullRequest.php:138)"} []
[2022-06-17T06:57:33.460273+00:00] deprecation.INFO: User Deprecated: return_immediately is deprecated. {"exception":"[object] (ErrorException(code: 0): User Deprecated: return_immediately is deprecated. at /app/vendor/google/cloud-pubsub/src/V1/PullRequest.php:118)"} []
[2022-06-17T06:57:33.460353+00:00] deprecation.INFO: User Deprecated: return_immediately is deprecated. {"exception":"[object] (ErrorException(code: 0): User Deprecated: return_immediately is deprecated. at /app/vendor/google/cloud-pubsub/src/V1/PullRequest.php:118)"} []

At first I thought to submit a workaround for this, so that the deprecation is only shown when the option is set to true (false is the default):

    public function getReturnImmediately()
    {
        if ($this->return_immediately === true) {
            @trigger_error('return_immediately is deprecated.', E_USER_DEPRECATED);
        }
        return $this->return_immediately;
    }

The setter should still always trigger the deprecation, so you still see it when you use the option and set it to false.

However, then I noticed that this code is generated. So I don't think this is possible, unless there's a way to customize generated classes like this?

In any case, I would very much like to be able to remove this deprecation from our processes, as it's polluting our logs, making them harder to read. Is there another way to go here?

Here is the stack trace

PHP Fatal error:  Uncaught ErrorException: return_immediately is deprecated. in /app/vendor/google/cloud-pubsub/src/V1/PullRequest.php:167
Stack trace:
#0 [internal function]: {closure}(16384, 'return_immediat...', '/app/vendor/goo...', 167)
#1 /app/vendor/google/cloud-pubsub/src/V1/PullRequest.php(167): trigger_error('return_immediat...', 16384)
#2 /app/vendor/google/protobuf/src/Google/Protobuf/Internal/Message.php(1598): Google\Cloud\PubSub\V1\PullRequest->getReturnImmediately()
#3 /app/vendor/google/protobuf/src/Google/Protobuf/Internal/Message.php(1842): Google\Protobuf\Internal\Message->existField(Object(Google\Protobuf\Internal\FieldDescriptor))
#4 /app/vendor/google/protobuf/src/Google/Protobuf/Internal/Message.php(1931): Google\Protobuf\Internal\Message->fieldByteSize(Object(Google\Protobuf\Internal\FieldDescriptor))
#5 /app/vendor/google/protobuf/src/Google/Protobuf/Internal/Message.php(1564): Google\Protobuf\Internal\Message->byteSize()
#6 /app/vendor/grpc/grpc/src/lib/AbstractCall.php(117): Google\Protobuf\Internal\Message->serializeToString()
#7 /app/vendor/grpc/grpc/src/lib/UnaryCall.php(39): Grpc\AbstractCall->_serializeMessage(Object(Google\Cloud\PubSub\V1\PullRequest))
#8 /app/vendor/grpc/grpc/src/lib/BaseStub.php(295): Grpc\UnaryCall->start(Object(Google\Cloud\PubSub\V1\PullRequest), Array, Array)
#9 /app/vendor/grpc/grpc/src/lib/BaseStub.php(545): Grpc\BaseStub->Grpc\{closure}('/google.pubsub....', Object(Google\Cloud\PubSub\V1\PullRequest), Array, Array, Array)
#10 /app/vendor/google/gax/src/Transport/GrpcTransport.php(218): Grpc\BaseStub->_simpleRequest('/google.pubsub....', Object(Google\Cloud\PubSub\V1\PullRequest), Array, Array, Array)
#11 /app/vendor/google/gax/src/GapicClientTrait.php(751): Google\ApiCore\Transport\GrpcTransport->startUnaryCall(Object(Google\ApiCore\Call), Array)
#12 /app/vendor/google/gax/src/Middleware/CredentialsWrapperMiddleware.php(59): Google\Cloud\PubSub\V1\Gapic\SubscriberGapicClient->Google\ApiCore\{closure}(Object(Google\ApiCore\Call), Array)
#13 /app/vendor/google/gax/src/Middleware/FixedHeaderMiddleware.php(68): Google\ApiCore\Middleware\CredentialsWrapperMiddleware->__invoke(Object(Google\ApiCore\Call), Array)
#14 /app/vendor/google/gax/src/Middleware/RetryMiddleware.php(85): Google\ApiCore\Middleware\FixedHeaderMiddleware->__invoke(Object(Google\ApiCore\Call), Array)
#15 /app/vendor/google/gax/src/Middleware/OptionsFilterMiddleware.php(62): Google\ApiCore\Middleware\RetryMiddleware->__invoke(Object(Google\ApiCore\Call), Array)
#16 /app/vendor/google/gax/src/GapicClientTrait.php(725): Google\ApiCore\Middleware\OptionsFilterMiddleware->__invoke(Object(Google\ApiCore\Call), Array)
#17 /app/vendor/google/cloud-pubsub/src/V1/Gapic/SubscriberGapicClient.php(1264): Google\Cloud\PubSub\V1\Gapic\SubscriberGapicClient->startCall('Pull', 'Google\\Cloud\\Pu...', Array, Object(Google\Cloud\PubSub\V1\PullRequest))
#18 [internal function]: Google\Cloud\PubSub\V1\Gapic\SubscriberGapicClient->pull('projects/dev-pk...', 1000, Array)
#19 /app/vendor/google/cloud-core/src/ExponentialBackoff.php(97): call_user_func_array(Array, Array)
#20 /app/vendor/google/cloud-core/src/GrpcRequestWrapper.php(148): Google\Cloud\Core\ExponentialBackoff->execute(Array, Array)
#21 /app/vendor/google/cloud-core/src/GrpcTrait.php(82): Google\Cloud\Core\GrpcRequestWrapper->send(Array, Array, Array)
#22 /app/vendor/google/cloud-pubsub/src/Connection/Grpc.php(411): Google\Cloud\PubSub\Connection\Grpc->send(Array, Array)
#23 /app/vendor/google/cloud-pubsub/src/Subscription.php(688): Google\Cloud\PubSub\Connection\Grpc->pull(Array)
#24 /app/bin/pubsub.php(18): Google\Cloud\PubSub\Subscription->pull()
#25 {main}
  thrown in /app/vendor/google/cloud-pubsub/src/V1/PullRequest.php on line 167

[fowles]

https://github.com/googleapis/googleapis/blob/master/google/pubsub/v1/pubsub.proto#L1227-L1228 this field is marked deprecated. If you wish to not have the deprecation warning, you need to mark the field as non-deprecated.

[pkruithof]

The issue is not that the field is deprecated, but that some internal call is being done which triggers the deprecation warning, without any way to avoid that.

Please consider reopening the issue, as it is not fixed.

[fowles]

Ah, I misunderstood. Is there a way to suppress specific calls to deprecated methods at the callsite?

[pkruithof]

Well you can suppress these kinds of warnings in PHP, but that would either mean disabling all deprecated warnings, or doing some hacks to only disable them for this particular use case. Neither are really preferable IMO: I think when you're specifically not using this option, the library should not warn about using it.

[s2x]

Maybe it's not the best way, but I got rid of this error from the logs by setting the transport method to rest

$client = new PubSubClient(['transport'=>'rest']);

[github-actions]

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This issue is labeled inactive because the last activity was over 90 days ago.

[pkruithof]

Issue is still active.

[bshaffer]

I see two potential solutions here:

1. Since this call is used internally, we could just remove the trigger_error warning, and say that the @deprecated tag in phpdoc will suffice
2. Similar to @pkruithof's suggestion, we can wrap trigger_error in a conditional so it only happens if the field has been set. This would look something like this:

    public function getSomeDeprecatedField()
    {
        if ($this->some_deprecated_field !== null) {
            @trigger_error('some_deprecated_field is deprecated.', E_USER_DEPRECATED);
        }
        return $this->some_deprecated_field;
    }

@fowles I'm happy to submit a PR for either of these if you think they're acceptable.