chore: refactor otel integration#2794
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igorbernstein2 merged 2 commits intomainfrom Feb 22, 2026
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Previously bigtable client would construct 2 otel instances: - one for internal metrics not relevant for customers - another for user visible metrics The 2nd otel instance would be used for both exporting to cloud monitoring and to end user provided exporters. This was done by having the enduser provide a SdkMeterProviderBuilder and use a utility to inject the bigtable builtin exporter. This created a number of problems and overheads. This PR changes the split, now there is a builtin otel instance with a bigtable exporter preconfigured. This receives both internal and user visible cloud monitoring metrics. This exporter can be disabled via EnhancedStubSettings#disableInternalMetrics() In addition, if an enduser provides their own otel instance via CustomOpenTelemetryMetricsProvider, this will be dual written in parallel to the builtin one. Now the default case is that we have 1 otel instance and we dont have to inject our internal exporter into the use otel instance. Change-Id: Ic0b8efdcdf342aef8f589c2c9e05b7672a0e5d08
Change-Id: Id8a2052a4d49a9623a2b63debe1f8ef10210f84c
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igorbernstein2
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Feb 20, 2026
...ain/java/com/google/cloud/bigtable/data/v2/stub/metrics/BigtableCloudMonitoringExporter.java
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igorbernstein2
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Feb 20, 2026
| */ | ||
| @Deprecated | ||
| public class BuiltinMetricsView { | ||
|
|
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note to reviewer: this class not used anymore but since its marked public I left the bare minimum: just register the otel views and not try to register the exporter. So all exporter related args are just ignored now
igorbernstein2
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Feb 20, 2026
...igtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/metrics/BuiltinMetricsView.java
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igorbernstein2
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Feb 20, 2026
| * Convenient method to set up SdkMeterProviderBuilder with the default credential and endpoint. | ||
| */ | ||
| public static void setupSdkMeterProvider(SdkMeterProviderBuilder builder) throws IOException { | ||
| setupSdkMeterProvider(builder, null, null, null); |
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note to reviewer: this basically inlines the remainder of BuiltinMetricsView. Once we have typesafe metrics this will be stripped as well
igorbernstein2
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Feb 20, 2026
...ble/src/main/java/com/google/cloud/bigtable/data/v2/stub/metrics/DefaultMetricsProvider.java
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igorbernstein2
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Feb 20, 2026
...oud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/BigtableClientContext.java
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Previously bigtable client would construct 2 otel instances:
The 2nd otel instance would be used for both exporting to cloud monitoring and to end user provided exporters.
This was done by having the enduser provide a SdkMeterProviderBuilder and use a utility to inject the bigtable builtin exporter.
This created a number of problems and overheads.
This PR changes the split, now there is a builtin otel instance with a bigtable exporter preconfigured. This receives both internal and user visible cloud monitoring metrics.
This exporter can be disabled via EnhancedStubSettings#disableInternalMetrics()
In addition, if an enduser provides their own otel instance via CustomOpenTelemetryMetricsProvider, this will be dual written in parallel to the builtin one.
Now the default case is that we have 1 otel instance and we dont have to inject our internal exporter into the use otel instance.