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feat: Enable ALTS hard bound token in Bigtable w/ direct access #2695

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feat: Enable ALTS hard bound token in Bigtable w/ direct access #2695

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c296c92
feat: Enable ALTS hard bound token in Bigtable w/ direct access
rockspore Oct 15, 2025
5d6fe37
add env var to allow disabling bound token
rockspore Oct 17, 2025
2f62b94
format
rockspore Oct 17, 2025
0764d0a
format
rockspore Oct 17, 2025
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5 changes: 5 additions & 0 deletions ...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 @@ -64,6 +64,7 @@
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Optional;
Expand Down Expand Up @@ -438,6 +439,10 @@ public static InstantiatingGrpcChannelProvider.Builder defaultGrpcTransportProvi
grpcTransportProviderBuilder
.setAttemptDirectPathXds()
.setAttemptDirectPath(true)
// Try to fetch a hard-bound access token for direct access if the runtime
// environment supports it.
.setAllowHardBoundTokenTypes(
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You can set it as default. Not a hard requirement, but could we add a env var to disable this incase we have any problem? Better to use env var rather than rollback client to prev version.

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This is a great point. Done. Thanks for the tip!

Collections.singletonList(InstantiatingGrpcChannelProvider.HardBoundTokenTypes.ALTS))
// Allow using non-default service account in DirectPath.
.setAllowNonDefaultServiceAccount(true);
}
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