| /* |
| * |
| * Copyright 2016, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| 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) |
| } |