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feat: Adding TraceUtil interface and its implementation to enable Tra…
…cing controls via DatastoreOptions (#1431) * Adding EnabledTraceUtil, DisabledTraceUtil and TraceUtilTest * Annotating DatastoreOpenTelemetryOptions to be transient as they're not serializable * Adding google-auth-library-credentials dependency due to https://github.com/googleapis/java-datastore/actions/runs/8944472794/job/24571458116?pr=1431
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97 changes: 97 additions & 0 deletions
97
...oud-datastore/src/main/java/com/google/cloud/datastore/DatastoreOpenTelemetryOptions.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| /* | ||
| * Copyright 2024 Google LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package com.google.cloud.datastore; | ||
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| import io.opentelemetry.api.OpenTelemetry; | ||
| import javax.annotation.Nonnull; | ||
| import javax.annotation.Nullable; | ||
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| public class DatastoreOpenTelemetryOptions { | ||
| private final boolean enabled; | ||
| private final @Nullable OpenTelemetry openTelemetry; | ||
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| DatastoreOpenTelemetryOptions(Builder builder) { | ||
| this.enabled = builder.enabled; | ||
| this.openTelemetry = builder.openTelemetry; | ||
| } | ||
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| public boolean isEnabled() { | ||
| return enabled; | ||
| } | ||
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| @Nullable | ||
| public OpenTelemetry getOpenTelemetry() { | ||
| return openTelemetry; | ||
| } | ||
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| @Nonnull | ||
| public DatastoreOpenTelemetryOptions.Builder toBuilder() { | ||
| return new DatastoreOpenTelemetryOptions.Builder(this); | ||
| } | ||
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| @Nonnull | ||
| public static DatastoreOpenTelemetryOptions.Builder newBuilder() { | ||
| return new DatastoreOpenTelemetryOptions.Builder(); | ||
| } | ||
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| public static class Builder { | ||
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| private boolean enabled; | ||
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| @Nullable private OpenTelemetry openTelemetry; | ||
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| private Builder() { | ||
| enabled = false; | ||
| openTelemetry = null; | ||
| } | ||
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| private Builder(DatastoreOpenTelemetryOptions options) { | ||
| this.enabled = options.enabled; | ||
| this.openTelemetry = options.openTelemetry; | ||
| } | ||
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| @Nonnull | ||
| public DatastoreOpenTelemetryOptions build() { | ||
| return new DatastoreOpenTelemetryOptions(this); | ||
| } | ||
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| /** | ||
| * Sets whether tracing should be enabled. | ||
| * | ||
| * @param enabled Whether tracing should be enabled. | ||
| */ | ||
| @Nonnull | ||
| public DatastoreOpenTelemetryOptions.Builder setTracingEnabled(boolean enabled) { | ||
| this.enabled = enabled; | ||
| return this; | ||
| } | ||
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| /** | ||
| * Sets the {@link OpenTelemetry} to use with this Datastore instance. If telemetry collection | ||
| * is enabled, but an `OpenTelemetry` is not provided, the Datastore SDK will attempt to use the | ||
| * `GlobalOpenTelemetry`. | ||
| * | ||
| * @param openTelemetry The OpenTelemetry that should be used by this Datastore instance. | ||
| */ | ||
| @Nonnull | ||
| public DatastoreOpenTelemetryOptions.Builder setOpenTelemetry( | ||
| @Nonnull OpenTelemetry openTelemetry) { | ||
| this.openTelemetry = openTelemetry; | ||
| return this; | ||
| } | ||
| } | ||
| } |
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109 changes: 109 additions & 0 deletions
109
...cloud-datastore/src/main/java/com/google/cloud/datastore/telemetry/DisabledTraceUtil.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| /* | ||
| * Copyright 2024 Google LLC | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package com.google.cloud.datastore.telemetry; | ||
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| import com.google.api.core.ApiFunction; | ||
| import com.google.api.core.ApiFuture; | ||
| import com.google.api.core.InternalApi; | ||
| import io.grpc.ManagedChannelBuilder; | ||
| import java.util.Map; | ||
| import javax.annotation.Nonnull; | ||
| import javax.annotation.Nullable; | ||
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| /** | ||
| * Tracing utility implementation, used to stub out tracing instrumentation when tracing is | ||
| * disabled. | ||
| */ | ||
| @InternalApi | ||
| public class DisabledTraceUtil implements TraceUtil { | ||
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| static class Span implements TraceUtil.Span { | ||
| @Override | ||
| public void end() {} | ||
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| @Override | ||
| public void end(Throwable error) {} | ||
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| @Override | ||
| public <T> void endAtFuture(ApiFuture<T> futureValue) {} | ||
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| @Override | ||
| public TraceUtil.Span addEvent(String name) { | ||
| return this; | ||
| } | ||
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| @Override | ||
| public TraceUtil.Span addEvent(String name, Map<String, Object> attributes) { | ||
| return this; | ||
| } | ||
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| @Override | ||
| public TraceUtil.Span setAttribute(String key, int value) { | ||
| return this; | ||
| } | ||
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| @Override | ||
| public TraceUtil.Span setAttribute(String key, String value) { | ||
| return this; | ||
| } | ||
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| @Override | ||
| public Scope makeCurrent() { | ||
| return new Scope(); | ||
| } | ||
| } | ||
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| static class Context implements TraceUtil.Context { | ||
| @Override | ||
| public Scope makeCurrent() { | ||
| return new Scope(); | ||
| } | ||
| } | ||
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| static class Scope implements TraceUtil.Scope { | ||
| @Override | ||
| public void close() {} | ||
| } | ||
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| @Nullable | ||
| @Override | ||
| public ApiFunction<ManagedChannelBuilder, ManagedChannelBuilder> getChannelConfigurator() { | ||
| return null; | ||
| } | ||
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| @Override | ||
| public Span startSpan(String spanName) { | ||
| return new Span(); | ||
| } | ||
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| @Override | ||
| public TraceUtil.Span startSpan(String spanName, TraceUtil.Context parent) { | ||
| return new Span(); | ||
| } | ||
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| @Nonnull | ||
| @Override | ||
| public TraceUtil.Span currentSpan() { | ||
| return new Span(); | ||
| } | ||
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| @Nonnull | ||
| @Override | ||
| public TraceUtil.Context currentContext() { | ||
| return new Context(); | ||
| } | ||
| } |
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