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Merge pull request #1336 from adamreese/feat/grpc-tracing

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feat(tiller): add optional grpc tracing
pull/1345/head
Adam Reese 8 years ago committed by GitHub
parent cd4069dd9b 995f7569c9
commit 3c98c512c9
2 changed files with 75 additions and 8 deletions
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23
cmd/tiller/tiller.go
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@ -46,9 +46,11 @@ var rootServer = grpc.NewServer()
var env = environment.New() var env = environment.New()
var ( var (
addr = ":44134" grpcAddr = ":44134"
probe = ":44135" probeAddr = ":44135"
store = storageConfigMap traceAddr = ":44136"
enableTracing = false
store = storageConfigMap
) )
const globalUsage = `The Kubernetes Helm server. const globalUsage = `The Kubernetes Helm server.
@ -67,8 +69,9 @@ var rootCommand = &cobra.Command{
func main() { func main() {
pf := rootCommand.PersistentFlags() 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.StringVar(&store, "storage", storageConfigMap, "The storage driver to use. One of 'configmap' or 'memory'")
pf.BoolVar(&enableTracing, "trace", false, "Enable rpc tracing")
rootCommand.Execute() rootCommand.Execute()
} }
@ -84,16 +87,20 @@ func start(c *cobra.Command, args []string) {
env.Releases = storage.Init(driver.NewConfigMaps(c.ConfigMaps(environment.TillerNamespace))) 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 { if err != nil {
fmt.Fprintf(os.Stderr, "Server died: %s\n", err) fmt.Fprintf(os.Stderr, "Server died: %s\n", err)
os.Exit(1) os.Exit(1)
} }
fmt.Printf("Tiller is running on %s\n", addr) fmt.Printf("Tiller is listening on %s\n", grpcAddr)
fmt.Printf("Tiller probes server is running on %s\n", probe) fmt.Printf("Probes server is listening on %s\n", probeAddr)
fmt.Printf("Storage driver is %s\n", env.Releases.Name()) fmt.Printf("Storage driver is %s\n", env.Releases.Name())
if enableTracing {
startTracing(traceAddr)
}
srvErrCh := make(chan error) srvErrCh := make(chan error)
probeErrCh := make(chan error) probeErrCh := make(chan error)
go func() { go func() {
@ -104,7 +111,7 @@ func start(c *cobra.Command, args []string) {
go func() { go func() {
mux := newProbesMux() mux := newProbesMux()
if err := http.ListenAndServe(probe, mux); err != nil { if err := http.ListenAndServe(probeAddr, mux); err != nil {
probeErrCh <- err probeErrCh <- err
} }
}() }()

60
cmd/tiller/trace.go
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@ -0,0 +1,60 @@
/*
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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