vendor files

vendor/google.golang.org/grpc/stress/metrics_client/main.go

@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io"
+
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/grpclog"
+	metricspb "google.golang.org/grpc/stress/grpc_testing"
+)
+
+var (
+	metricsServerAddress = flag.String("metrics_server_address", "", "The metrics server addresses in the fomrat <hostname>:<port>")
+	totalOnly            = flag.Bool("total_only", false, "If true, this prints only the total value of all gauges")
+)
+
+func printMetrics(client metricspb.MetricsServiceClient, totalOnly bool) {
+	stream, err := client.GetAllGauges(context.Background(), &metricspb.EmptyMessage{})
+	if err != nil {
+		grpclog.Fatalf("failed to call GetAllGuages: %v", err)
+	}
+
+	var (
+		overallQPS int64
+		rpcStatus  error
+	)
+	for {
+		gaugeResponse, err := stream.Recv()
+		if err != nil {
+			rpcStatus = err
+			break
+		}
+		if _, ok := gaugeResponse.GetValue().(*metricspb.GaugeResponse_LongValue); !ok {
+			panic(fmt.Sprintf("gauge %s is not a long value", gaugeResponse.Name))
+		}
+		v := gaugeResponse.GetLongValue()
+		if !totalOnly {
+			grpclog.Printf("%s: %d", gaugeResponse.Name, v)
+		}
+		overallQPS += v
+	}
+	if rpcStatus != io.EOF {
+		grpclog.Fatalf("failed to finish server streaming: %v", rpcStatus)
+	}
+	grpclog.Printf("overall qps: %d", overallQPS)
+}
+
+func main() {
+	flag.Parse()
+	if *metricsServerAddress == "" {
+		grpclog.Fatalf("Metrics server address is empty.")
+	}
+
+	conn, err := grpc.Dial(*metricsServerAddress, grpc.WithInsecure())
+	if err != nil {
+		grpclog.Fatalf("cannot connect to metrics server: %v", err)
+	}
+	defer conn.Close()
+
+	c := metricspb.NewMetricsServiceClient(conn)
+	printMetrics(c, *totalOnly)
+}