forked from uber/tchannel-go
/
external_client.go
100 lines (85 loc) · 2.82 KB
/
external_client.go
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// Copyright (c) 2015 Uber Technologies, Inc.
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package benchmark
import (
"fmt"
"strconv"
"strings"
"time"
)
// externalClient represents a benchmark client running out-of-process.
type externalClient struct {
*externalCmd
opts *options
}
func newExternalClient(hosts []string, opts *options) Client {
benchArgs := []string{
"--service", opts.svcName,
"--timeout", opts.timeout.String(),
"--request-size", strconv.Itoa(opts.reqSize),
"--num-clients", strconv.Itoa(opts.numClients),
}
if opts.noDurations {
benchArgs = append(benchArgs, "--no-durations")
}
if opts.noLibrary {
benchArgs = append(benchArgs, "--no-library")
}
benchArgs = append(benchArgs, hosts...)
cmd, initial := newExternalCmd("benchclient/main.go", benchArgs)
if !strings.Contains(initial, "started") {
panic("bench-client did not start, got: " + initial)
}
return &externalClient{cmd, opts}
}
func (c *externalClient) Warmup() error {
out, err := c.writeAndRead("warmup")
if err != nil {
return err
}
if out != "success" {
return fmt.Errorf("warmup failed: %v", out)
}
return nil
}
func (c *externalClient) callAndParse(cmd string) ([]time.Duration, error) {
out, err := c.writeAndRead(cmd)
if err != nil {
return nil, err
}
if out == "" {
return nil, nil
}
durationStrs := strings.Split(out, " ")
durations := make([]time.Duration, len(durationStrs))
for i, s := range durationStrs {
d, err := time.ParseDuration(s)
if err != nil {
return nil, fmt.Errorf("calls failed: %v", out)
}
durations[i] = d
}
return durations, nil
}
func (c *externalClient) RawCall(n int) ([]time.Duration, error) {
return c.callAndParse(fmt.Sprintf("rcall %v", n))
}
func (c *externalClient) ThriftCall(n int) ([]time.Duration, error) {
return c.callAndParse(fmt.Sprintf("tcall %v", n))
}