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Bigtable: enable JWT tokens #3351

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Jun 8, 2018
Merged

Bigtable: enable JWT tokens #3351

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23 changes: 22 additions & 1 deletion ...le/src/main/java/com/google/cloud/bigtable/data/v2/stub/EnhancedBigtableStubSettings.java
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
import com.google.api.gax.batching.BatchingSettings;
import com.google.api.gax.batching.FlowControlSettings;
import com.google.api.gax.batching.FlowController.LimitExceededBehavior;
import com.google.api.gax.core.GoogleCredentialsProvider;
import com.google.api.gax.grpc.InstantiatingGrpcChannelProvider;
import com.google.api.gax.retrying.RetrySettings;
import com.google.api.gax.rpc.BatchingCallSettings;
Expand All @@ -35,6 +36,7 @@
import com.google.cloud.bigtable.data.v2.models.Row;
import com.google.cloud.bigtable.data.v2.models.RowMutation;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import java.util.List;
import java.util.Set;
Expand Down Expand Up @@ -92,6 +94,19 @@ public class EnhancedBigtableStubSettings extends StubSettings<EnhancedBigtableS
.setTotalTimeout(Duration.ofMillis(600000L))
.build();

/**
* Scopes that are equivalent to JWT's audience.
*
* <p>When the credentials provider contains any of these scopes (default behavior) and the
* application default credentials point to a service account, then OAuth2 tokens will be replaced
* with JWT tokens. This removes the need for access token refreshes. */
private static final ImmutableList<String> JWT_ENABLED_SCOPES =
ImmutableList.<String>builder()
.add("https://www.googleapis.com/auth/bigtable.data")
.add("https://www.googleapis.com/auth/cloud-bigtable.data")
.add("https://www.googleapis.com/auth/cloud-platform")
.build();

private final InstanceName instanceName;
private final String appProfileId;

Expand Down Expand Up @@ -131,6 +146,12 @@ public String getAppProfileId() {
return appProfileId;
}

/** Returns a builder for the default credentials for this service. */
public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
return BigtableStubSettings.defaultCredentialsProviderBuilder()
.setJwtEnabledScopes(JWT_ENABLED_SCOPES);
}

/** Returns the object with the settings used for calls to ReadRows. */
public ServerStreamingCallSettings<Query, Row> readRowsSettings() {
return readRowsSettings;
Expand Down Expand Up @@ -195,12 +216,12 @@ public static class Builder extends StubSettings.Builder<EnhancedBigtableStubSet
*/
private Builder() {
this.appProfileId = SERVER_DEFAULT_APP_PROFILE_ID;
setCredentialsProvider(defaultCredentialsProviderBuilder().build());

// Defaults provider
BigtableStubSettings.Builder baseDefaults = BigtableStubSettings.newBuilder();

setEndpoint(baseDefaults.getEndpoint());
setCredentialsProvider(baseDefaults.getCredentialsProvider());
setTransportChannelProvider(
InstantiatingGrpcChannelProvider.newBuilder()
// TODO: tune channels
Expand Down