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127 lines
3.1 KiB
127 lines
3.1 KiB
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main // import "k8s.io/helm/cmd/tiller"
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import (
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"fmt"
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"net"
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"net/http"
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"os"
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"github.com/spf13/cobra"
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"google.golang.org/grpc"
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"k8s.io/helm/cmd/tiller/environment"
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"k8s.io/helm/pkg/storage"
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"k8s.io/helm/pkg/storage/driver"
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)
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const (
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storageMemory = "memory"
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storageConfigMap = "configmap"
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)
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// rootServer is the root gRPC server.
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//
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// Each gRPC service registers itself to this server during init().
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var rootServer = grpc.NewServer()
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// env is the default environment.
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//
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// Any changes to env should be done before rootServer.Serve() is called.
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var env = environment.New()
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var (
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grpcAddr = ":44134"
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probeAddr = ":44135"
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traceAddr = ":44136"
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enableTracing = false
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store = storageConfigMap
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)
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const globalUsage = `The Kubernetes Helm server.
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Tiller is the server for Helm. It provides in-cluster resource management.
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By default, Tiller listens for gRPC connections on port 44134.
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`
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var rootCommand = &cobra.Command{
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Use: "tiller",
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Short: "The Kubernetes Helm server.",
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Long: globalUsage,
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Run: start,
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}
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func main() {
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pf := rootCommand.PersistentFlags()
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pf.StringVarP(&grpcAddr, "listen", "l", ":44134", "The address:port to listen on")
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pf.StringVar(&store, "storage", storageConfigMap, "The storage driver to use. One of 'configmap' or 'memory'")
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pf.BoolVar(&enableTracing, "trace", false, "Enable rpc tracing")
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rootCommand.Execute()
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}
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func start(c *cobra.Command, args []string) {
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switch store {
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case storageMemory:
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env.Releases = storage.Init(driver.NewMemory())
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case storageConfigMap:
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c, err := env.KubeClient.APIClient()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Cannot initialize Kubernetes connection: %s", err)
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}
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env.Releases = storage.Init(driver.NewConfigMaps(c.ConfigMaps(environment.TillerNamespace)))
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}
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lstn, err := net.Listen("tcp", grpcAddr)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Server died: %s\n", err)
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os.Exit(1)
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}
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fmt.Printf("Tiller is listening on %s\n", grpcAddr)
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fmt.Printf("Probes server is listening on %s\n", probeAddr)
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fmt.Printf("Storage driver is %s\n", env.Releases.Name())
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if enableTracing {
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startTracing(traceAddr)
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}
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srvErrCh := make(chan error)
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probeErrCh := make(chan error)
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go func() {
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if err := rootServer.Serve(lstn); err != nil {
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srvErrCh <- err
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}
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}()
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go func() {
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mux := newProbesMux()
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if err := http.ListenAndServe(probeAddr, mux); err != nil {
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probeErrCh <- err
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}
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}()
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select {
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case err := <-srvErrCh:
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fmt.Fprintf(os.Stderr, "Server died: %s\n", err)
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os.Exit(1)
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case err := <-probeErrCh:
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fmt.Fprintf(os.Stderr, "Probes server died: %s\n", err)
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}
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}
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