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/*
*
* 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)
}
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