Set layer to mesh relation. (#8424)

CHANGES.md

@@ -27,6 +27,7 @@ Release Notes.
 * Bump up grpc to 1.43.2 and protobuf to 3.19.2 to fix CVE-2021-22569.
 * Add source layer and dest layer to relation.
 * Follow protocol grammar fix `GCPhrase -> GCPhase`.
+* Set layer to mesh relation.
 
 #### UI
 

oap-server/server-receiver-plugin/skywalking-mesh-receiver-plugin/src/main/java/org/apache/skywalking/aop/server/receiver/mesh/TelemetryDataDispatcher.java

@@ -161,9 +161,11 @@ public class TelemetryDataDispatcher {
         ServiceRelation serviceRelation = new ServiceRelation();
         serviceRelation.setTimeBucket(minuteTimeBucket);
         serviceRelation.setSourceServiceName(metrics.getSourceServiceName());
+        serviceRelation.setSourceLayer(Layer.MESH);
         serviceRelation.setSourceNormal(true);
         serviceRelation.setSourceServiceInstanceName(metrics.getSourceServiceInstance());
         serviceRelation.setDestServiceName(metrics.getDestServiceName());
+        serviceRelation.setDestLayer(Layer.MESH);
         serviceRelation.setDestNormal(true);
         serviceRelation.setDestServiceInstanceName(metrics.getDestServiceInstance());
         serviceRelation.setEndpoint(metrics.getEndpoint());
@@ -207,8 +209,10 @@ public class TelemetryDataDispatcher {
         serviceRelation.setTimeBucket(minuteTimeBucket);
         serviceRelation.setSourceServiceInstanceName(metrics.getSourceServiceInstance());
         serviceRelation.setSourceServiceName(metrics.getSourceServiceName());
+        serviceRelation.setSourceServiceLayer(Layer.MESH);
         serviceRelation.setSourceServiceNormal(true);
         serviceRelation.setDestServiceInstanceName(metrics.getDestServiceInstance());
+        serviceRelation.setDestServiceLayer(Layer.MESH);
         serviceRelation.setDestServiceNormal(true);
         serviceRelation.setDestServiceName(metrics.getDestServiceName());
         serviceRelation.setEndpoint(metrics.getEndpoint());