| /* |
| * |
| * 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. |
| * |
| */ |
| |
| // Binary metrics_client is a client to retrieve metrics from the server. |
| package main |
| |
| import ( |
| "context" |
| "flag" |
| "fmt" |
| "io" |
| |
| "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 format <hostname>:<port>") |
| totalOnly = flag.Bool("total_only", false, "If true, this prints only the total value of all gauges") |
| |
| logger = grpclog.Component("stress") |
| ) |
| |
| func printMetrics(client metricspb.MetricsServiceClient, totalOnly bool) { |
| stream, err := client.GetAllGauges(context.Background(), &metricspb.EmptyMessage{}) |
| if err != nil { |
| logger.Fatalf("failed to call GetAllGauges: %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 { |
| logger.Infof("%s: %d", gaugeResponse.Name, v) |
| } |
| overallQPS += v |
| } |
| if rpcStatus != io.EOF { |
| logger.Fatalf("failed to finish server streaming: %v", rpcStatus) |
| } |
| logger.Infof("overall qps: %d", overallQPS) |
| } |
| |
| func main() { |
| flag.Parse() |
| if *metricsServerAddress == "" { |
| logger.Fatalf("Metrics server address is empty.") |
| } |
| |
| conn, err := grpc.Dial(*metricsServerAddress, grpc.WithInsecure()) |
| if err != nil { |
| logger.Fatalf("cannot connect to metrics server: %v", err) |
| } |
| defer conn.Close() |
| |
| c := metricspb.NewMetricsServiceClient(conn) |
| printMetrics(c, *totalOnly) |
| } |