mirror of https://github.com/helm/helm
Adam Reese
8 years ago
parent
dbf1ed0ba4
commit
61a9003a97
@ -1,43 +0,0 @@
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/*
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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
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import (
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"net/http"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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func readinessProbe(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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}
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func livenessProbe(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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}
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func newProbesMux() *http.ServeMux {
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mux := http.NewServeMux()
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mux.HandleFunc("/readiness", readinessProbe)
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mux.HandleFunc("/liveness", livenessProbe)
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return mux
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}
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func addPrometheusHandler(mux *http.ServeMux) {
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// Register HTTP handler for the global Prometheus registry.
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mux.Handle("/metrics", promhttp.Handler())
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}
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@ -1,58 +0,0 @@
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/*
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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
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import (
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"net/http"
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"net/http/httptest"
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"testing"
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)
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func TestProbesServer(t *testing.T) {
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mux := newProbesMux()
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srv := httptest.NewServer(mux)
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defer srv.Close()
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resp, err := http.Get(srv.URL + "/readiness")
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if err != nil {
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t.Fatalf("GET /readiness returned an error (%s)", err)
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}
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("GET /readiness returned status code %d, expected %d", resp.StatusCode, http.StatusOK)
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}
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resp, err = http.Get(srv.URL + "/liveness")
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if err != nil {
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t.Fatalf("GET /liveness returned an error (%s)", err)
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}
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("GET /liveness returned status code %d, expected %d", resp.StatusCode, http.StatusOK)
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}
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}
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func TestPrometheus(t *testing.T) {
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mux := http.NewServeMux()
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addPrometheusHandler(mux)
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srv := httptest.NewServer(mux)
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defer srv.Close()
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resp, err := http.Get(srv.URL + "/metrics")
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if err != nil {
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t.Fatalf("GET /metrics returned an error (%s)", err)
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}
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if resp.StatusCode != http.StatusOK {
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t.Fatalf("GET /metrics returned status code %d, expected %d", resp.StatusCode, http.StatusOK)
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}
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}
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@ -1,288 +0,0 @@
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/*
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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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"crypto/tls"
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"flag"
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"fmt"
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"io/ioutil"
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"log"
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"net"
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"net/http"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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goprom "github.com/grpc-ecosystem/go-grpc-prometheus"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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"google.golang.org/grpc/health"
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healthpb "google.golang.org/grpc/health/grpc_health_v1"
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"google.golang.org/grpc/keepalive"
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"k8s.io/helm/pkg/kube"
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"k8s.io/helm/pkg/proto/hapi/services"
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"k8s.io/helm/pkg/storage"
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"k8s.io/helm/pkg/storage/driver"
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"k8s.io/helm/pkg/tiller"
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"k8s.io/helm/pkg/tiller/environment"
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"k8s.io/helm/pkg/tlsutil"
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"k8s.io/helm/pkg/version"
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)
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const (
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// tlsEnableEnvVar names the environment variable that enables TLS.
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tlsEnableEnvVar = "TILLER_TLS_ENABLE"
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// tlsVerifyEnvVar names the environment variable that enables
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// TLS, as well as certificate verification of the remote.
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tlsVerifyEnvVar = "TILLER_TLS_VERIFY"
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// tlsCertsEnvVar names the environment variable that points to
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// the directory where Tiller's TLS certificates are located.
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tlsCertsEnvVar = "TILLER_TLS_CERTS"
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// historyMaxEnvVar is the name of the env var for setting max history.
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historyMaxEnvVar = "TILLER_HISTORY_MAX"
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storageMemory = "memory"
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storageConfigMap = "configmap"
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storageSecret = "secret"
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probeAddr = ":44135"
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traceAddr = ":44136"
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// defaultMaxHistory sets the maximum number of releases to 0: unlimited
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defaultMaxHistory = 0
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)
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var (
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grpcAddr = flag.String("listen", ":44134", "address:port to listen on")
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enableTracing = flag.Bool("trace", false, "enable rpc tracing")
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store = flag.String("storage", storageConfigMap, "storage driver to use. One of 'configmap', 'memory', or 'secret'")
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remoteReleaseModules = flag.Bool("experimental-release", false, "enable experimental release modules")
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tlsEnable = flag.Bool("tls", tlsEnableEnvVarDefault(), "enable TLS")
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tlsVerify = flag.Bool("tls-verify", tlsVerifyEnvVarDefault(), "enable TLS and verify remote certificate")
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keyFile = flag.String("tls-key", tlsDefaultsFromEnv("tls-key"), "path to TLS private key file")
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certFile = flag.String("tls-cert", tlsDefaultsFromEnv("tls-cert"), "path to TLS certificate file")
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caCertFile = flag.String("tls-ca-cert", tlsDefaultsFromEnv("tls-ca-cert"), "trust certificates signed by this CA")
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maxHistory = flag.Int("history-max", historyMaxFromEnv(), "maximum number of releases kept in release history, with 0 meaning no limit")
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printVersion = flag.Bool("version", false, "print the version number")
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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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rootServer *grpc.Server
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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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env = environment.New()
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logger *log.Logger
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)
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func main() {
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// TODO: use spf13/cobra for tiller instead of flags
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flag.Parse()
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if *printVersion {
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fmt.Println(version.GetVersion())
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os.Exit(0)
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}
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if *enableTracing {
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log.SetFlags(log.Lshortfile)
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}
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logger = newLogger("main")
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start()
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}
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func start() {
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healthSrv := health.NewServer()
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healthSrv.SetServingStatus("Tiller", healthpb.HealthCheckResponse_NOT_SERVING)
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clientset, err := kube.New(nil).ClientSet()
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if err != nil {
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logger.Fatalf("Cannot initialize Kubernetes connection: %s", err)
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}
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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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cfgmaps := driver.NewConfigMaps(clientset.Core().ConfigMaps(namespace()))
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cfgmaps.Log = newLogger("storage/driver").Printf
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env.Releases = storage.Init(cfgmaps)
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env.Releases.Log = newLogger("storage").Printf
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case storageSecret:
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secrets := driver.NewSecrets(clientset.Core().Secrets(namespace()))
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secrets.Log = newLogger("storage/driver").Printf
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env.Releases = storage.Init(secrets)
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env.Releases.Log = newLogger("storage").Printf
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}
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if *maxHistory > 0 {
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env.Releases.MaxHistory = *maxHistory
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}
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kubeClient := kube.New(nil)
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kubeClient.Log = newLogger("kube").Printf
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env.KubeClient = kubeClient
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if *tlsEnable || *tlsVerify {
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opts := tlsutil.Options{CertFile: *certFile, KeyFile: *keyFile}
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if *tlsVerify {
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opts.CaCertFile = *caCertFile
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}
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}
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var opts []grpc.ServerOption
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if *tlsEnable || *tlsVerify {
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cfg, err := tlsutil.ServerConfig(tlsOptions())
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if err != nil {
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logger.Fatalf("Could not create server TLS configuration: %v", err)
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}
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opts = append(opts, grpc.Creds(credentials.NewTLS(cfg)))
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}
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opts = append(opts, grpc.KeepaliveParams(keepalive.ServerParameters{
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MaxConnectionIdle: 10 * time.Minute,
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// If needed, we can configure the max connection age
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}))
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opts = append(opts, grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{
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MinTime: time.Duration(20) * time.Second, // For compatibility with the client keepalive.ClientParameters
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}))
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rootServer = tiller.NewServer(opts...)
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healthpb.RegisterHealthServer(rootServer, healthSrv)
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lstn, err := net.Listen("tcp", *grpcAddr)
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if err != nil {
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logger.Fatalf("Server died: %s", err)
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}
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logger.Printf("Starting Tiller %s (tls=%t)", version.GetVersion(), *tlsEnable || *tlsVerify)
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logger.Printf("GRPC listening on %s", *grpcAddr)
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logger.Printf("Probes listening on %s", probeAddr)
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logger.Printf("Storage driver is %s", env.Releases.Name())
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logger.Printf("Max history per release is %d", *maxHistory)
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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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svc := tiller.NewReleaseServer(env, clientset, *remoteReleaseModules)
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svc.Log = newLogger("tiller").Printf
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services.RegisterReleaseServiceServer(rootServer, svc)
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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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// Register gRPC server to prometheus to initialized matrix
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goprom.Register(rootServer)
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addPrometheusHandler(mux)
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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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healthSrv.SetServingStatus("Tiller", healthpb.HealthCheckResponse_SERVING)
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select {
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case err := <-srvErrCh:
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logger.Fatalf("Server died: %s", err)
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case err := <-probeErrCh:
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logger.Printf("Probes server died: %s", err)
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}
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}
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func newLogger(prefix string) *log.Logger {
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if len(prefix) > 0 {
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prefix = fmt.Sprintf("[%s] ", prefix)
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}
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return log.New(os.Stderr, prefix, log.Flags())
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}
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// namespace returns the namespace of tiller
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func namespace() string {
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if ns := os.Getenv("TILLER_NAMESPACE"); ns != "" {
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return ns
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}
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// Fall back to the namespace associated with the service account token, if available
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if data, err := ioutil.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace"); err == nil {
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if ns := strings.TrimSpace(string(data)); len(ns) > 0 {
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return ns
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}
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}
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return environment.DefaultTillerNamespace
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}
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func tlsOptions() tlsutil.Options {
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opts := tlsutil.Options{CertFile: *certFile, KeyFile: *keyFile}
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if *tlsVerify {
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opts.CaCertFile = *caCertFile
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// We want to force the client to not only provide a cert, but to
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// provide a cert that we can validate.
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// http://www.bite-code.com/2015/06/25/tls-mutual-auth-in-golang/
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opts.ClientAuth = tls.RequireAndVerifyClientCert
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}
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return opts
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}
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func tlsDefaultsFromEnv(name string) (value string) {
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switch certsDir := os.Getenv(tlsCertsEnvVar); name {
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case "tls-key":
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return filepath.Join(certsDir, "tls.key")
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case "tls-cert":
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return filepath.Join(certsDir, "tls.crt")
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case "tls-ca-cert":
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return filepath.Join(certsDir, "ca.crt")
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}
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return ""
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}
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func historyMaxFromEnv() int {
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val := os.Getenv(historyMaxEnvVar)
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if val == "" {
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return defaultMaxHistory
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}
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ret, err := strconv.Atoi(val)
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if err != nil {
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log.Printf("Invalid max history %q. Defaulting to 0.", val)
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return defaultMaxHistory
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}
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return ret
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}
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|
||||||
func tlsEnableEnvVarDefault() bool { return os.Getenv(tlsEnableEnvVar) != "" }
|
|
||||||
func tlsVerifyEnvVarDefault() bool { return os.Getenv(tlsVerifyEnvVar) != "" }
|
|
||||||
@ -1,47 +0,0 @@
|
|||||||
/*
|
|
||||||
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 (
|
|
||||||
"testing"
|
|
||||||
|
|
||||||
"k8s.io/helm/pkg/engine"
|
|
||||||
"k8s.io/helm/pkg/tiller/environment"
|
|
||||||
)
|
|
||||||
|
|
||||||
// These are canary tests to make sure that the default server actually
|
|
||||||
// fulfills its requirements.
|
|
||||||
var _ environment.Engine = &engine.Engine{}
|
|
||||||
|
|
||||||
func TestInit(t *testing.T) {
|
|
||||||
defer func() {
|
|
||||||
if recover() != nil {
|
|
||||||
t.Fatalf("Panic trapped. Check EngineYard.Default()")
|
|
||||||
}
|
|
||||||
}()
|
|
||||||
|
|
||||||
// This will panic if it is not correct.
|
|
||||||
env.EngineYard.Default()
|
|
||||||
|
|
||||||
e, ok := env.EngineYard.Get(environment.GoTplEngine)
|
|
||||||
if !ok {
|
|
||||||
t.Fatalf("Could not find GoTplEngine")
|
|
||||||
}
|
|
||||||
if e == nil {
|
|
||||||
t.Fatalf("Template engine GoTplEngine returned nil.")
|
|
||||||
}
|
|
||||||
}
|
|
||||||
@ -1,58 +0,0 @@
|
|||||||
/*
|
|
||||||
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 (
|
|
||||||
"net/http"
|
|
||||||
|
|
||||||
_ "net/http/pprof"
|
|
||||||
|
|
||||||
"google.golang.org/grpc"
|
|
||||||
)
|
|
||||||
|
|
||||||
func startTracing(addr string) {
|
|
||||||
logger.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 {
|
|
||||||
logger.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>
|
|
||||||
`
|
|
||||||
Loading…
Reference in new issue