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chore: Use AltContext to check DirectPath Used attribute #4221

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Merged
merged 4 commits into from
Nov 17, 2025
Merged

chore: Use AltContext to check DirectPath Used attribute #4221

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7997766
chore: Use AltContext to check DirectPath Used attribute
surbhigarg92 Nov 14, 2025
ea3d27b
Merge branch 'main' into directpath_used_attr
surbhigarg92 Nov 14, 2025
55446a0
Merge branch 'main' into directpath_used_attr
surbhigarg92 Nov 17, 2025
1851a65
Merge branch 'main' into directpath_used_attr
rahul2393 Nov 17, 2025
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20 changes: 3 additions & 17 deletions google-cloud-spanner/src/main/java/com/google/cloud/spanner/spi/v1/HeaderInterceptor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -34,9 +34,9 @@
import io.grpc.ClientInterceptor;
import io.grpc.ForwardingClientCall.SimpleForwardingClientCall;
import io.grpc.ForwardingClientCallListener.SimpleForwardingClientCallListener;
import io.grpc.Grpc;
import io.grpc.Metadata;
import io.grpc.MethodDescriptor;
import io.grpc.alts.AltsContextUtil;
import io.opencensus.stats.MeasureMap;
import io.opencensus.stats.Stats;
import io.opencensus.stats.StatsRecorder;
Expand All @@ -47,9 +47,6 @@
import io.opentelemetry.api.common.Attributes;
import io.opentelemetry.api.common.AttributesBuilder;
import io.opentelemetry.api.trace.Span;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutionException;
Expand Down Expand Up @@ -127,10 +124,9 @@ public void start(Listener<RespT> responseListener, Metadata headers) {
new SimpleForwardingClientCallListener<RespT>(responseListener) {
@Override
public void onHeaders(Metadata metadata) {
Boolean isDirectPathUsed =
isDirectPathUsed(getAttributes().get(Grpc.TRANSPORT_ATTR_REMOTE_ADDR));
// Check if the call uses DirectPath by inspecting the ALTS context.
boolean isDirectPathUsed = AltsContextUtil.check(getAttributes());
addDirectPathUsedAttribute(compositeTracer, isDirectPathUsed);

processHeader(
metadata, tagContext, attributes, span, compositeTracer, isDirectPathUsed);
super.onHeaders(metadata);
Expand Down Expand Up @@ -316,14 +312,4 @@ private void addDirectPathUsedAttribute(
BuiltInMetricsConstant.DIRECT_PATH_USED_KEY.getKey(), Boolean.toString(isDirectPathUsed));
}
}

private Boolean isDirectPathUsed(SocketAddress remoteAddr) {
if (remoteAddr instanceof InetSocketAddress) {
InetAddress inetAddress = ((InetSocketAddress) remoteAddr).getAddress();
String addr = inetAddress.getHostAddress();
return addr.startsWith(BuiltInMetricsConstant.DP_IPV4_PREFIX)
|| addr.startsWith(BuiltInMetricsConstant.DP_IPV6_PREFIX);
}
return false;
}
}
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