This adds compile-time checking that the type of the value and the size of the labels and optional labels passed when recording a metric must match with the type and the size specified when the metric is registered.
The RegistrationBuilder API idea is credited to @ctiller.
<!--
If you know who should review your pull request, please assign it to that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the appropriate
lang label.
-->
Closes#36449
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36449 from yijiem:registration-builder-api a727810136
PiperOrigin-RevId: 632271022
As per https://github.com/grpc/proposal/pull/419, the experimental optional label `grpc.lb.locality` is added to the follow per-call metrics -
* grpc.client.attempt.duration
* grpc.client.attempt.sent_total_compressed_message_size
* grpc.client.attempt.rcvd_total_compressed_message_size
Closes#36254
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36254 from yashykt:OTelOptionalLabelsOnPerCall c5390c99a1
PiperOrigin-RevId: 622973959
<!--
If you know who should review your pull request, please assign it to that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the appropriate
lang label.
-->
Closes#36182
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36182 from yijiem:grpc-metrics-async-gauge 8614485f3d
PiperOrigin-RevId: 622182710
Also addressing a TODO from previous PRs where `authority` is not being populated in the `ChannelScope`.
Closes#36189
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36189 from yashykt:OTelChannelScope e76f9ce0ca
PiperOrigin-RevId: 621231764
<!--
If you know who should review your pull request, please assign it to that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the appropriate
lang label.
-->
Closes#36070
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36070 from yijiem:grpc-metrics 72653727b1
PiperOrigin-RevId: 618529035
Changes -
* Add CMake build support to `grpcpp_otel_plugin`. Currently, we are only supporting the `find_package CONFIG` method for depending on `opentelemetry-cpp`.
* Since, `grpcpp_otel_plugin` is an extension of gRPC, it will not be built by default. To enable building of this target, a new CMake option `gRPC_BUILD_GRPCPP_OTEL_PLUGIN` is being added.
* Also add `CMakeLists.txt` to the otel example.
The `otel_plugin_test` can also be built through cmake but, for the CI to work, there are some additional changes. Those will be made in an upcoming PR.
Closes#36063
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36063 from yashykt:OTelCMakeSupport 3bc783823b
PiperOrigin-RevId: 613734473
Changes -
* `CsmObservability` API will now use the `CsmOpenTelemetryPluginOption` internally. After this change, `CsmObservability` will enable observability for all channels and servers. (Earlier, `CsmObservability` only enabled observability for CSM-enabled channels and servers.) CSM labels will still be added just for CSM-enabled channels and servers.
* Also, we no longer need the ability to set `LabelInjector` on the `OpenTelemetryPluginBuilder` directly. Instead, we always use `PluginOption` to inject the `LabelInjector`. This simplifies the code as well.
Note that `SetTargetSelector` and `SetServerSelector` APIs on the `OpenTelemetryPluginBuilderImpl` are not being deleted yet since we might need them shortly. This is also why `OpenTelemetryPluginBuilderImpl` is not being deleted right now.
Closes#35803
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35803 from yashykt:CsmO11yApisUsePluginOption cf3d65900d
PiperOrigin-RevId: 604323898
<!--
If you know who should review your pull request, please assign it to that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the appropriate
lang label.
-->
Closes#35633
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35633 from yijiem:labels-injector-patch 6876243943
PiperOrigin-RevId: 600931754
It looks like this ended up getting deleted in https://github.com/grpc/grpc/pull/34350 probably when merging.
Also, the `Init` method in the otel test library is getting unwieldy. I'm going to send out a follow-up PR to convert this into a builder instead.
Closes#35532
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35532 from yashykt:OTelPluginBuilderFix 372bf26338
PiperOrigin-RevId: 597846622
<!--
If you know who should review your pull request, please assign it to that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the appropriate
lang label.
-->
Closes#35210
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35210 from yijiem:csm-service-label 6a6a7d1774
PiperOrigin-RevId: 597641393
Provide a public experimental API and bazel compatible build target for OpenTelemetry metrics.
Details -
* New `OpenTelemetryPluginBuilder` class that provides the API specified in https://github.com/grpc/proposal/blob/master/A66-otel-stats.md
* The existing `grpc::internal::OpenTelemetryPluginBuilder` class is moved to `grpc::internal::OpenTelemetryPluginBuilderImpl` for disambiguation.
* Renamed `OTel` in some instances to `OpenTelemetry` for consistency.
Closes#35348
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35348 from yashykt:OTelPublicApi e32328825e
PiperOrigin-RevId: 594271246
Earlier, the grpc message-length prefix for outgoing data messages was
incorrectly being counted towards `data_bytes` instead of
`framing_bytes`. This PR fixes it.
Note that the incoming stats collection properly attributes the grpc
message-length prefix to `framing_bytes`.
This change will affect all stats plugins (OpenCensus and OpenTelemetry)
that make use of this information for metrics.
<!--
If you know who should review your pull request, please assign it to
that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the
appropriate
lang label.
-->
@ctiller PTAL for core configuration changes. I converted the type from
std::function to absl::AnyInvocable. Do you think the functor in
RegisteredBuilder should be callable just once or multiple times?
<!--
If you know who should review your pull request, please assign it to
that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the
appropriate
lang label.
-->
A new metadata type `x-envoy-peer-metadata` is being introduced. We
don't have a better way to do this at the moment compared to just adding
it in `metadata_batch.h`.
The GSM Observability plugin uses this metadata to send topology
information to peers in the form of serialized and base64 encoded
`google::protobuf::Struct`. The individual keys being used inside the
struct are subject to change.
<!--
If you know who should review your pull request, please assign it to
that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the
appropriate
lang label.
-->
Based on updates at https://github.com/grpc/proposal/pull/380
<!--
If you know who should review your pull request, please assign it to
that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the
appropriate
lang label.
-->
Based on updates at https://github.com/grpc/proposal/pull/380
<!--
If you know who should review your pull request, please assign it to
that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the
appropriate
lang label.
-->
<!--
If you know who should review your pull request, please assign it to
that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the
appropriate
lang label.
-->
Note that the plugin is still under `grpc::internal` namespace and not
under `experimental` intentionally.
<!--
If you know who should review your pull request, please assign it to
that
person, otherwise the pull request would get assigned randomly.
If your pull request is for a specific language, please add the
appropriate
lang label.
-->
Yash Tibrewal
Mark D. Roth
Yijie Ma
Eugene Ostroukhov