services: add qps in orca api (#9866)

repositories.bzl

@@ -95,10 +95,10 @@ def grpc_java_repositories():
     if not native.existing_rule("com_github_cncf_xds"):
         http_archive(
             name = "com_github_cncf_xds",
-            strip_prefix = "xds-d92e9ce0af512a73a3a126b32fa4920bee12e180",
-            sha256 = "27be88b1ff2844885d3b2d0d579546f3a8b3f26b4871eed89082c9709e49a4bd",
+            strip_prefix = "xds-06c439db220b89134a8a49bad41994560d6537c6",
+            sha256 = "41ea212940ab44bf7f8a8b4169cfbc612ed2166dafabc0a56a8820ef665fc6a4",
             urls = [
-                "https://github.com/cncf/xds/archive/d92e9ce0af512a73a3a126b32fa4920bee12e180.tar.gz",
+                "https://github.com/cncf/xds/archive/06c439db220b89134a8a49bad41994560d6537c6.tar.gz",
             ],
         )
     if not native.existing_rule("com_github_grpc_grpc"):

services/src/main/java/io/grpc/services/CallMetricRecorder.java

@@ -43,6 +43,7 @@ public final class CallMetricRecorder {
       new AtomicReference<>();
   private double cpuUtilizationMetric = 0;
   private double memoryUtilizationMetric = 0;
+  private double qps = 0;
   private volatile boolean disabled;
 
   /**
@@ -158,6 +159,23 @@ public final class CallMetricRecorder {
     return this;
   }
 
+  /**
+   * Records a call metric measurement for qps.
+   * If RPC has already finished, this method is no-op.
+   *
+   * <p>A latter record will overwrite its former name-sakes.
+   *
+   * @return this recorder object
+   * @since 1.54.0
+   */
+  public CallMetricRecorder recordQpsMetric(double value) {
+    if (disabled) {
+      return this;
+    }
+    qps = value;
+    return this;
+  }
+
 
   /**
    * Returns all request cost metric values. No more metric values will be recorded after this
@@ -187,8 +205,8 @@ public final class CallMetricRecorder {
     if (savedUtilizationMetrics == null) {
       savedUtilizationMetrics = Collections.emptyMap();
     }
-    return new MetricReport(cpuUtilizationMetric,
-        memoryUtilizationMetric, Collections.unmodifiableMap(savedRequestCostMetrics),
+    return new MetricReport(cpuUtilizationMetric, memoryUtilizationMetric, qps,
+        Collections.unmodifiableMap(savedRequestCostMetrics),
         Collections.unmodifiableMap(savedUtilizationMetrics)
     );
   }

services/src/main/java/io/grpc/services/InternalCallMetricRecorder.java

@@ -46,8 +46,8 @@ public final class InternalCallMetricRecorder {
   }
 
   public static MetricReport createMetricReport(double cpuUtilization, double memoryUtilization,
-      Map<String, Double> requestCostMetrics, Map<String, Double> utilizationMetrics) {
-    return new MetricReport(cpuUtilization, memoryUtilization,
-        requestCostMetrics, utilizationMetrics);
+      double qps, Map<String, Double> requestCostMetrics, Map<String, Double> utilizationMetrics) {
+    return new MetricReport(cpuUtilization, memoryUtilization, qps, requestCostMetrics,
+        utilizationMetrics);
   }
 }

services/src/main/java/io/grpc/services/MetricRecorder.java

@@ -30,6 +30,7 @@ public final class MetricRecorder {
   private volatile ConcurrentHashMap<String, Double> metricsData = new ConcurrentHashMap<>();
   private volatile double cpuUtilization;
   private volatile double memoryUtilization;
+  private volatile double qps;
 
   public static MetricRecorder newInstance() {
     return new MetricRecorder();
@@ -86,8 +87,22 @@ public final class MetricRecorder {
     memoryUtilization = 0;
   }
 
+  /**
+   * Update the QPS metrics data.
+   */
+  public void setQps(double value) {
+    qps = value;
+  }
+
+  /**
+   * Clear the QPS metrics data.
+   */
+  public void clearQps() {
+    qps = 0;
+  }
+
   MetricReport getMetricReport() {
-    return new MetricReport(cpuUtilization, memoryUtilization,
+    return new MetricReport(cpuUtilization, memoryUtilization, qps,
         Collections.emptyMap(), Collections.unmodifiableMap(metricsData));
   }
 }

services/src/main/java/io/grpc/services/MetricReport.java

@@ -30,14 +30,16 @@ import java.util.Map;
 public final class MetricReport {
   private double cpuUtilization;
   private double memoryUtilization;
+  private double qps;
   private Map<String, Double> requestCostMetrics;
   private Map<String, Double> utilizationMetrics;
 
-  MetricReport(double cpuUtilization, double memoryUtilization,
-                   Map<String, Double> requestCostMetrics,
-                   Map<String, Double> utilizationMetrics) {
+  MetricReport(double cpuUtilization, double memoryUtilization, double qps,
+               Map<String, Double> requestCostMetrics,
+               Map<String, Double> utilizationMetrics) {
     this.cpuUtilization = cpuUtilization;
     this.memoryUtilization = memoryUtilization;
+    this.qps = qps;
     this.requestCostMetrics = checkNotNull(requestCostMetrics, "requestCostMetrics");
     this.utilizationMetrics = checkNotNull(utilizationMetrics, "utilizationMetrics");
   }
@@ -58,6 +60,10 @@ public final class MetricReport {
     return utilizationMetrics;
   }
 
+  public double getQps() {
+    return qps;
+  }
+
   @Override
   public String toString() {
     return MoreObjects.toStringHelper(this)
@@ -65,6 +71,7 @@ public final class MetricReport {
         .add("memoryUtilization", memoryUtilization)
         .add("requestCost", requestCostMetrics)
         .add("utilization", utilizationMetrics)
+        .add("qps", qps)
         .toString();
   }
 }

services/src/test/java/io/grpc/services/CallMetricRecorderTest.java

@@ -46,6 +46,7 @@ public class CallMetricRecorderTest {
     recorder.recordRequestCostMetric("cost3", 1.0);
     recorder.recordCpuUtilizationMetric(0.1928);
     recorder.recordMemoryUtilizationMetric(47.4);
+    recorder.recordQpsMetric(2522.54);
 
     MetricReport dump = recorder.finalizeAndDump2();
     Truth.assertThat(dump.getUtilizationMetrics())
@@ -54,6 +55,7 @@ public class CallMetricRecorderTest {
         .containsExactly("cost1", 37465.12, "cost2", 10293.0, "cost3", 1.0);
     Truth.assertThat(dump.getCpuUtilization()).isEqualTo(0.1928);
     Truth.assertThat(dump.getMemoryUtilization()).isEqualTo(47.4);
+    Truth.assertThat(dump.getQps()).isEqualTo(2522.54);
   }
 
   @Test
@@ -75,6 +77,8 @@ public class CallMetricRecorderTest {
     recorder.recordUtilizationMetric("util1", 28374.21);
     recorder.recordMemoryUtilizationMetric(9384.0);
     recorder.recordUtilizationMetric("util1", 84323.3);
+    recorder.recordQpsMetric(1928.3);
+    recorder.recordQpsMetric(100.8);
 
     MetricReport dump = recorder.finalizeAndDump2();
     Truth.assertThat(dump.getRequestCostMetrics())
@@ -83,6 +87,7 @@ public class CallMetricRecorderTest {
     Truth.assertThat(dump.getUtilizationMetrics())
         .containsExactly("util1", 84323.3);
     Truth.assertThat(dump.getCpuUtilization()).isEqualTo(0);
+    Truth.assertThat(dump.getQps()).isEqualTo(100.8);
   }
 
   @Test

xds/src/main/java/io/grpc/xds/orca/OrcaPerRequestUtil.java

@@ -254,8 +254,8 @@ public abstract class OrcaPerRequestUtil {
 
   static MetricReport fromOrcaLoadReport(OrcaLoadReport loadReport) {
     return InternalCallMetricRecorder.createMetricReport(loadReport.getCpuUtilization(),
-        loadReport.getMemUtilization(), loadReport.getRequestCostMap(),
-        loadReport.getUtilizationMap());
+        loadReport.getMemUtilization(), loadReport.getRpsFractional(),
+        loadReport.getRequestCostMap(), loadReport.getUtilizationMap());
   }
 
   /**

xds/src/main/java/io/grpc/xds/orca/OrcaServiceImpl.java

@@ -150,6 +150,7 @@ public final class OrcaServiceImpl implements BindableService {
         InternalMetricRecorder.getMetricReport(metricRecorder);
     return OrcaLoadReport.newBuilder().setCpuUtilization(internalReport.getCpuUtilization())
         .setMemUtilization(internalReport.getMemoryUtilization())
+        .setRpsFractional(internalReport.getQps())
         .putAllUtilization(internalReport.getUtilizationMetrics())
         .build();
   }

xds/src/test/java/io/grpc/xds/orca/OrcaServiceImplTest.java

@@ -143,19 +143,23 @@ public class OrcaServiceImplTest {
     ClientCall<OrcaLoadReportRequest, OrcaLoadReport> call = channel.newCall(
         OpenRcaServiceGrpc.getStreamCoreMetricsMethod(), CallOptions.DEFAULT);
     defaultTestService.putUtilizationMetric("buffer", 0.2);
+    defaultTestService.setQps(1.9);
     call.start(listener, new Metadata());
     call.sendMessage(OrcaLoadReportRequest.newBuilder()
         .setReportInterval(Duration.newBuilder().setSeconds(0).setNanos(500).build()).build());
     call.halfClose();
     call.request(1);
-    OrcaLoadReport expect = OrcaLoadReport.newBuilder().putUtilization("buffer", 0.2).build();
+    OrcaLoadReport expect = OrcaLoadReport.newBuilder().putUtilization("buffer", 0.2)
+            .setRpsFractional(1.9).build();
     verify(listener).onMessage(eq(expect));
     reset(listener);
     defaultTestService.removeUtilizationMetric("buffer0");
+    defaultTestService.clearQps();
     assertThat(fakeClock.forwardTime(500, TimeUnit.NANOSECONDS)).isEqualTo(0);
     verifyNoInteractions(listener);
     assertThat(fakeClock.forwardTime(1, TimeUnit.SECONDS)).isEqualTo(1);
     call.request(1);
+    expect = OrcaLoadReport.newBuilder().putUtilization("buffer", 0.2).build();
     verify(listener).onMessage(eq(expect));
   }
 
@@ -245,17 +249,20 @@ public class OrcaServiceImplTest {
         .setMemUtilization(random.nextDouble())
         .putAllUtilization(firstUtilization)
         .putUtilization("queue", 1.0)
+        .setRpsFractional(1239.01)
         .build();
     defaultTestService.setCpuUtilizationMetric(goldenReport.getCpuUtilization());
     defaultTestService.setMemoryUtilizationMetric(goldenReport.getMemUtilization());
     defaultTestService.setAllUtilizationMetrics(firstUtilization);
     defaultTestService.putUtilizationMetric("queue", 1.0);
+    defaultTestService.setQps(1239.01);
     Iterator<OrcaLoadReport> reports = OpenRcaServiceGrpc.newBlockingStub(channel)
         .streamCoreMetrics(OrcaLoadReportRequest.newBuilder().build());
     assertThat(reports.next()).isEqualTo(goldenReport);
 
     defaultTestService.clearCpuUtilizationMetric();
     defaultTestService.clearMemoryUtilizationMetric();
+    defaultTestService.clearQps();
     fakeClock.forwardTime(1, TimeUnit.SECONDS);
     goldenReport = OrcaLoadReport.newBuilder()
         .putAllUtilization(firstUtilization)