Google Cloud Trace Client Library/Exporter

[HaGuesto]

Is your feature request related to a problem?
If so, provide a concise description of the problem.

We used opencensus to extend the tracing capabilities. In general, Google already creates traces for any incoming requests. However, if you want to enhance the data collected, like which subprocesses took how long, you need to include tracing libraries. To do this Google recommended opencensus when we started implementing the tracing.

opencensus was archived on Oct 4, 2023 and we get a warning in php8.2 that it has been deperecated with php7.4 . The tracing still works though at the moment. It still tracks the sub “spans” and traces correctly. However, we cannot count on it for long and a change in the Google infra-structure could mean that the tracing will not be working from one day to another. Since we still want to keep the tracing, we need to migrate.

Now in general, Google recommends OpenTelemetry for tracing, but there is no specific exporter/lib or documentation of OpenTelemetry that works for php and GoogleCloud.

Describe the solution you'd like
What do you want to happen instead? What is the expected behavior?

specific exporter/lib of OpenTelemetry that works for php and Google Cloud Trace or documentation how to use the OTLP exporter with Google Cloud trace

Describe alternatives you've considered
Which alternative solutions or features have you considered?

https://github.com/affordablemobiles/opentelemetry-operations-php

Additional context
Add any other context about the feature request here.

The Google documentation specific to php still recommends opencensus (here their php tracing sample) even though they also require at least php8.1 to be run on their servers.

[ynikitin-etsy]

Does this do what you need? https://github.com/opentelemetry-php/extension-propagator-cloudtrace

[HaGuesto]

Does this do what you need? https://github.com/opentelemetry-php/extension-propagator-cloudtrace

No. I rather need a way how to configure the OTLP exporter to report correctly to Google Cloud Trace similar to the python documentation

[brettmc]

@HaGuesto what is the OTLP exporter missing to be able to "report correctly to Google Cloud Trace" ? This hasn't come up before AFAIK. Does google cloud trace accept traces in the opentelemety format?

[idontusenumbers]

I believe the missing pieces to the puzzle are:

1. The OTLP endpoint
2. Authentication