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Commit 3c98c512 authored by Adam Reese's avatar Adam Reese Committed by GitHub
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Merge pull request #1336 from adamreese/feat/grpc-tracing 

feat(tiller): add optional grpc tracing
parents cd4069dd 995f7569
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Showing with 74 additions and 7 deletions
cmd/tiller/tiller.go
View file @ 3c98c512
......@@ -46,8 +46,10 @@ var rootServer = grpc.NewServer()
var env = environment.New()
var (
addr = ":44134"
probe = ":44135"
grpcAddr = ":44134"
probeAddr = ":44135"
traceAddr = ":44136"
enableTracing = false
store = storageConfigMap
)
......@@ -67,8 +69,9 @@ var rootCommand = &cobra.Command{
func main() {
pf := rootCommand.PersistentFlags()
pf.StringVarP(&addr, "listen", "l", ":44134", "The address:port to listen on")
pf.StringVarP(&grpcAddr, "listen", "l", ":44134", "The address:port to listen on")
pf.StringVar(&store, "storage", storageConfigMap, "The storage driver to use. One of 'configmap' or 'memory'")
pf.BoolVar(&enableTracing, "trace", false, "Enable rpc tracing")
rootCommand.Execute()
}
......@@ -84,16 +87,20 @@ func start(c *cobra.Command, args []string) {
env.Releases = storage.Init(driver.NewConfigMaps(c.ConfigMaps(environment.TillerNamespace)))
}
lstn, err := net.Listen("tcp", addr)
lstn, err := net.Listen("tcp", grpcAddr)
if err != nil {
fmt.Fprintf(os.Stderr, "Server died: %s\n", err)
os.Exit(1)
}
fmt.Printf("Tiller is running on %s\n", addr)
fmt.Printf("Tiller probes server is running on %s\n", probe)
fmt.Printf("Tiller is listening on %s\n", grpcAddr)
fmt.Printf("Probes server is listening on %s\n", probeAddr)
fmt.Printf("Storage driver is %s\n", env.Releases.Name())
if enableTracing {
startTracing(traceAddr)
}
srvErrCh := make(chan error)
probeErrCh := make(chan error)
go func() {
......@@ -104,7 +111,7 @@ func start(c *cobra.Command, args []string) {
go func() {
mux := newProbesMux()
if err := http.ListenAndServe(probe, mux); err != nil {
if err := http.ListenAndServe(probeAddr, mux); err != nil {
probeErrCh <- err
}
}()
......
cmd/tiller/trace.go 0 → 100644
View file @ 3c98c512
/*
Copyright 2016 The Kubernetes Authors All rights reserved.
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 "k8s.io/helm/cmd/tiller"
import (
"fmt"
"log"
"net/http"
_ "net/http/pprof"
"google.golang.org/grpc"
)
func startTracing(addr string) {
fmt.Printf("Tracing server is listening on %s\n", addr)
grpc.EnableTracing = true
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/" {
http.NotFound(w, r)
return
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
w.Write([]byte(traceIndexHTML))
})
go func() {
if err := http.ListenAndServe(addr, nil); err != nil {
log.Printf("tracing error: %s", err)
}
}()
}
const traceIndexHTML = `<!DOCTYPE html>
<html>
<body>
<ul>
<li><a href="/debug/requests">requests</a></li>
<li><a href="/debug/events">events</a></li>
<li><a href="/debug/pprof">pprof</a></li>
<li><a href="/debug/vars">vars</a></li>
</ul>
</body>
</html>
`
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