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671 lines
18 KiB
671 lines
18 KiB
/*
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Copyright 2015 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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"errors"
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"fmt"
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"io"
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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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"net/url"
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"os"
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"regexp"
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"strings"
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"github.com/ghodss/yaml"
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"github.com/gorilla/mux"
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"github.com/kubernetes/helm/cmd/manager/manager"
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"github.com/kubernetes/helm/cmd/manager/repository"
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"github.com/kubernetes/helm/cmd/manager/repository/persistent"
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"github.com/kubernetes/helm/cmd/manager/repository/transient"
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"github.com/kubernetes/helm/cmd/manager/router"
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"github.com/kubernetes/helm/pkg/common"
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"github.com/kubernetes/helm/pkg/httputil"
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"github.com/kubernetes/helm/pkg/registry"
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"github.com/kubernetes/helm/pkg/util"
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)
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// Deprecated. Use Context.Manager instead.
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var backend manager.Manager
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// Route defines a routing table entry to be registered with gorilla/mux.
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//
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// Route is deprecated. Use router.Routes instead.
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type Route struct {
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Name string
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Path string
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Methods string
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HandlerFunc http.HandlerFunc
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Type string
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}
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func registerDeploymentRoutes(c *router.Context, h *router.Handler) {
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h.Add("GET /healthz", healthz)
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h.Add("GET /deployments", listDeploymentsHandlerFunc)
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h.Add("GET /deployments/*", getDeploymentHandlerFunc)
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h.Add("POST /deployments", createDeploymentHandlerFunc)
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h.Add("DELETE /deployments/*", deleteDeploymentHandlerFunc)
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h.Add("PUT /deployments/*", putDeploymentHandlerFunc)
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h.Add("GET /deployments/*/manifests", listManifestsHandlerFunc)
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h.Add("GET /deployments/*/manifests/*", getManifestHandlerFunc)
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h.Add("POST /expand", expandHandlerFunc)
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h.Add("GET /types", listTypesHandlerFunc)
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h.Add("GET /types/*/instances", listTypeInstancesHandlerFunc)
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h.Add("GET /types/*/registry", getRegistryForTypeHandlerFunc)
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h.Add("GET /types/*/metadata", getMetadataForTypeHandlerFunc)
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h.Add("GET /registries", listRegistriesHandlerFunc)
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h.Add("GET /registries/*", getRegistryHandlerFunc)
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h.Add("POST /registries/*", createRegistryHandlerFunc)
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h.Add("GET /registries/*/types", listRegistryTypesHandlerFunc)
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h.Add("GET /registries/*/types/*", getDownloadURLsHandlerFunc)
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h.Add("GET /registries/*/download", getFileHandlerFunc)
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h.Add("POST /credentials/*", createCredentialHandlerFunc)
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h.Add("GET /credentials/*", getCredentialHandlerFunc)
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}
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func healthz(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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log.Println("manager: healthz checkpoint")
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// TODO: This should check the availability of the repository, and fail if it
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// cannot connect.
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fmt.Fprintln(w, "OK")
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return nil
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}
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func setupDependencies(c *router.Context) error {
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var credentialProvider common.CredentialProvider
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if c.Config.CredentialFile != "" {
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if c.Config.CredentialSecrets {
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return errors.New("Both credentialFile and credentialSecrets are set")
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}
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var err error
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credentialProvider, err = registry.NewFilebasedCredentialProvider(c.Config.CredentialFile)
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if err != nil {
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return fmt.Errorf("cannot create credential provider %s: %s", c.Config.CredentialFile, err)
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}
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} else if *credentialSecrets {
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credentialProvider = registry.NewSecretsCredentialProvider()
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} else {
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credentialProvider = registry.NewInmemCredentialProvider()
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}
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c.CredentialProvider = credentialProvider
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c.Manager = newManager(c)
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return nil
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}
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const expanderPort = "8080"
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const deployerPort = "8080"
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func newManager(c *router.Context) manager.Manager {
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cfg := c.Config
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service := registry.NewInmemRegistryService()
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registryProvider := registry.NewDefaultRegistryProvider(c.CredentialProvider, service)
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resolver := manager.NewTypeResolver(registryProvider, util.DefaultHTTPClient())
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expander := manager.NewExpander(getServiceURL(cfg.ExpanderURL, cfg.ExpanderName, expanderPort), resolver)
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deployer := manager.NewDeployer(getServiceURL(cfg.DeployerURL, cfg.DeployerName, deployerPort))
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address := strings.TrimPrefix(getServiceURL(cfg.MongoAddress, cfg.MongoName, cfg.MongoPort), "http://")
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repository := createRepository(address)
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return manager.NewManager(expander, deployer, repository, registryProvider, service, c.CredentialProvider)
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}
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func createRepository(address string) repository.Repository {
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r, err := persistent.NewRepository(address)
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if err != nil {
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r = transient.NewRepository()
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}
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return r
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}
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func getServiceURL(serviceURL, serviceName, servicePort string) string {
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if serviceURL == "" {
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serviceURL = makeEnvVariableURL(serviceName)
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if serviceURL == "" {
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addrs, err := net.LookupHost(serviceName)
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if err != nil || len(addrs) < 1 {
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log.Fatalf("cannot resolve service:%v. environment:%v\n", serviceName, os.Environ())
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}
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serviceURL = fmt.Sprintf("http://%s:%s", addrs[0], servicePort)
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}
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}
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return serviceURL
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}
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// makeEnvVariableURL takes a service name and returns the value of the
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// environment variable that identifies its URL, if it exists, or the empty
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// string, if it doesn't.
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func makeEnvVariableURL(str string) string {
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prefix := makeEnvVariableName(str)
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url := os.Getenv(prefix + "_PORT")
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return strings.Replace(url, "tcp", "http", 1)
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}
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// makeEnvVariableName is copied from the Kubernetes source,
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// which is referenced by the documentation for service environment variables.
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func makeEnvVariableName(str string) string {
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// TODO: If we simplify to "all names are DNS1123Subdomains" this
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// will need two tweaks:
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// 1) Handle leading digits
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// 2) Handle dots
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return strings.ToUpper(strings.Replace(str, "-", "_", -1))
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}
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func listDeploymentsHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: list deployments"
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util.LogHandlerEntry(handler, r)
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l, err := c.Manager.ListDeployments()
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if err != nil {
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util.LogAndReturnError(handler, http.StatusInternalServerError, err, w)
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return nil
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}
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var names []string
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for _, d := range l {
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names = append(names, d.Name)
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}
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util.LogHandlerExitWithJSON(handler, w, names, http.StatusOK)
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return nil
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}
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func getDeploymentHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: get deployment"
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util.LogHandlerEntry(handler, r)
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name, err := pos(w, r, 2)
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if err != nil {
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return nil
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}
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d, err := c.Manager.GetDeployment(name)
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if err != nil {
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util.LogAndReturnError(handler, http.StatusBadRequest, err, w)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, d, http.StatusOK)
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return nil
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}
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func createDeploymentHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: create deployment"
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util.LogHandlerEntry(handler, r)
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defer r.Body.Close()
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t := getTemplate(w, r, handler)
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if t != nil {
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d, err := c.Manager.CreateDeployment(t)
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if err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, d, http.StatusCreated)
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}
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return nil
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}
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func deleteDeploymentHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: delete deployment"
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util.LogHandlerEntry(handler, r)
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defer r.Body.Close()
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name, err := pos(w, r, 2)
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if err != nil {
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return err
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}
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d, err := c.Manager.DeleteDeployment(name, true)
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if err != nil {
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return err
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}
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util.LogHandlerExitWithJSON(handler, w, d, http.StatusOK)
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return nil
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}
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func putDeploymentHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: update deployment"
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util.LogHandlerEntry(handler, r)
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defer r.Body.Close()
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name, err := pos(w, r, 2)
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if err != nil {
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return err
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}
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t := getTemplate(w, r, handler)
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if t != nil {
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d, err := c.Manager.PutDeployment(name, t)
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if err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, d, http.StatusCreated)
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}
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return nil
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}
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// pos gets a path item by position.
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//
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// For example. the path "/foo/bar" has three positions: "" at 0, "foo" at
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// 1, and "bar" at 2.
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//
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// For verb/path combos, position 0 will be the verb: "GET /foo/bar" will have
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// "GET " at position 0.
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func pos(w http.ResponseWriter, r *http.Request, i int) (string, error) {
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parts := strings.Split(r.URL.Path, "/")
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if len(parts) < i-1 {
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return "", fmt.Errorf("No index for %d", i)
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}
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return parts[i], nil
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}
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func getPathVariable(w http.ResponseWriter, r *http.Request, variable, handler string) (string, error) {
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vars := mux.Vars(r)
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escaped, ok := vars[variable]
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if !ok {
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e := fmt.Errorf("%s name not found in URL", variable)
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util.LogAndReturnError(handler, http.StatusBadRequest, e, w)
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return "", e
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}
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unescaped, err := url.QueryUnescape(escaped)
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if err != nil {
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e := fmt.Errorf("cannot decode name (%v)", variable)
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util.LogAndReturnError(handler, http.StatusBadRequest, e, w)
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return "", e
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}
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return unescaped, nil
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}
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func getTemplate(w http.ResponseWriter, r *http.Request, handler string) *common.Template {
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util.LogHandlerEntry(handler, r)
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t := &common.Template{}
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if err := httputil.Decode(w, r, t); err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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return t
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}
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func listManifestsHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: list manifests"
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util.LogHandlerEntry(handler, r)
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deploymentName, err := pos(w, r, 2)
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if err != nil {
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return err
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}
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m, err := c.Manager.ListManifests(deploymentName)
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if err != nil {
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return err
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}
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var manifestNames []string
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for _, manifest := range m {
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manifestNames = append(manifestNames, manifest.Name)
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}
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util.LogHandlerExitWithJSON(handler, w, manifestNames, http.StatusOK)
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return nil
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}
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func getManifestHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: get manifest"
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util.LogHandlerEntry(handler, r)
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deploymentName, err := pos(w, r, 2)
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if err != nil {
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return err
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}
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manifestName, err := pos(w, r, 4)
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if err != nil {
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return err
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}
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m, err := c.Manager.GetManifest(deploymentName, manifestName)
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if err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, m, http.StatusOK)
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return nil
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}
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func expandHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: expand config"
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util.LogHandlerEntry(handler, r)
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defer r.Body.Close()
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t := getTemplate(w, r, handler)
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if t != nil {
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c, err := c.Manager.Expand(t)
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if err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, c, http.StatusCreated)
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}
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return nil
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}
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// Putting Type handlers here for now because deployments.go
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// currently owns its own Manager backend and doesn't like to share.
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func listTypesHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: list types"
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util.LogHandlerEntry(handler, r)
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types, err := c.Manager.ListTypes()
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if err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, types, http.StatusOK)
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return nil
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}
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func listTypeInstancesHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: list instances"
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util.LogHandlerEntry(handler, r)
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typeName, err := pos(w, r, 2)
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if err != nil {
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return err
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}
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instances, err := c.Manager.ListInstances(typeName)
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if err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, instances, http.StatusOK)
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return nil
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}
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func getRegistryForTypeHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: get type registry"
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util.LogHandlerEntry(handler, r)
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typeName, err := pos(w, r, 2)
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if err != nil {
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return err
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}
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registry, err := c.Manager.GetRegistryForType(typeName)
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if err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, registry, http.StatusOK)
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return nil
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}
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func getMetadataForTypeHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: get type metadata"
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util.LogHandlerEntry(handler, r)
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typeName, err := pos(w, r, 2)
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if err != nil {
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return err
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}
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metadata, err := c.Manager.GetMetadataForType(typeName)
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if err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, metadata, http.StatusOK)
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return nil
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}
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|
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// Putting Registry handlers here for now because deployments.go
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// currently owns its own Manager backend and doesn't like to share.
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func listRegistriesHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: list registries"
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util.LogHandlerEntry(handler, r)
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registries, err := c.Manager.ListRegistries()
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if err != nil {
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return err
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}
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util.LogHandlerExitWithJSON(handler, w, registries, http.StatusOK)
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return nil
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}
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|
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func getRegistryHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
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handler := "manager: get registry"
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util.LogHandlerEntry(handler, r)
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registryName, err := pos(w, r, 2)
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if err != nil {
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return err
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}
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|
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cr, err := c.Manager.GetRegistry(registryName)
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if err != nil {
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httputil.BadRequest(w, r, err)
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return nil
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}
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util.LogHandlerExitWithJSON(handler, w, cr, http.StatusOK)
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return nil
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}
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func getRegistry(w http.ResponseWriter, r *http.Request, handler string) *common.Registry {
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util.LogHandlerEntry(handler, r)
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t := &common.Registry{}
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if err := httputil.Decode(w, r, t); err != nil {
|
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httputil.BadRequest(w, r, err)
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return nil
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}
|
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return t
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}
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|
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func createRegistryHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
|
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handler := "manager: create registry"
|
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util.LogHandlerEntry(handler, r)
|
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defer r.Body.Close()
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registryName, err := pos(w, r, 2)
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if err != nil {
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return err
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}
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|
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reg := getRegistry(w, r, handler)
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if reg.Name != registryName {
|
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e := fmt.Errorf("Registry name does not match %s != %s", reg.Name, registryName)
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httputil.BadRequest(w, r, e)
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return nil
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}
|
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if reg != nil {
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err = c.Manager.CreateRegistry(reg)
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if err != nil {
|
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httputil.BadRequest(w, r, err)
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return nil
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}
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}
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util.LogHandlerExitWithJSON(handler, w, reg, http.StatusOK)
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return nil
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}
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|
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func listRegistryTypesHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
|
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handler := "manager: list registry types"
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util.LogHandlerEntry(handler, r)
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registryName, err := pos(w, r, 2)
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if err != nil {
|
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return err
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}
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|
|
values, err := url.ParseQuery(r.URL.RawQuery)
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|
if err != nil {
|
|
httputil.BadRequest(w, r, err)
|
|
return nil
|
|
}
|
|
|
|
var regex *regexp.Regexp
|
|
regexString := values.Get("regex")
|
|
if regexString != "" {
|
|
regex, err = regexp.Compile(regexString)
|
|
if err != nil {
|
|
httputil.BadRequest(w, r, err)
|
|
return nil
|
|
}
|
|
}
|
|
|
|
registryTypes, err := c.Manager.ListRegistryTypes(registryName, regex)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
util.LogHandlerExitWithJSON(handler, w, registryTypes, http.StatusOK)
|
|
return nil
|
|
}
|
|
|
|
func getDownloadURLsHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
|
|
handler := "manager: get download URLs"
|
|
util.LogHandlerEntry(handler, r)
|
|
registryName, err := pos(w, r, 2)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
typeName, err := pos(w, r, 4)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
tt, err := registry.ParseType(typeName)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
cr, err := c.Manager.GetDownloadURLs(registryName, tt)
|
|
if err != nil {
|
|
httputil.BadRequest(w, r, err)
|
|
return nil
|
|
}
|
|
|
|
urls := []string{}
|
|
for _, u := range cr {
|
|
urls = append(urls, u.String())
|
|
}
|
|
util.LogHandlerExitWithJSON(handler, w, urls, http.StatusOK)
|
|
return nil
|
|
}
|
|
|
|
func getFileHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
|
|
handler := "manager: get file"
|
|
util.LogHandlerEntry(handler, r)
|
|
registryName, err := pos(w, r, 2)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
file := r.FormValue("file")
|
|
if file == "" {
|
|
return err
|
|
}
|
|
|
|
b, err := c.Manager.GetFile(registryName, file)
|
|
if err != nil {
|
|
httputil.BadRequest(w, r, err)
|
|
return nil
|
|
}
|
|
|
|
util.LogHandlerExitWithJSON(handler, w, b, http.StatusOK)
|
|
return nil
|
|
}
|
|
|
|
func getCredential(w http.ResponseWriter, r *http.Request, handler string) *common.RegistryCredential {
|
|
util.LogHandlerEntry(handler, r)
|
|
t := &common.RegistryCredential{}
|
|
if err := httputil.Decode(w, r, t); err != nil {
|
|
httputil.BadRequest(w, r, err)
|
|
return nil
|
|
}
|
|
return t
|
|
}
|
|
|
|
func createCredentialHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
|
|
handler := "manager: create credential"
|
|
util.LogHandlerEntry(handler, r)
|
|
defer r.Body.Close()
|
|
credentialName, err := pos(w, r, 2)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
cr := getCredential(w, r, handler)
|
|
if cr != nil {
|
|
err = c.Manager.CreateCredential(credentialName, cr)
|
|
if err != nil {
|
|
httputil.BadRequest(w, r, err)
|
|
return nil
|
|
}
|
|
}
|
|
|
|
util.LogHandlerExitWithJSON(handler, w, c, http.StatusOK)
|
|
return nil
|
|
}
|
|
|
|
func getCredentialHandlerFunc(w http.ResponseWriter, r *http.Request, c *router.Context) error {
|
|
handler := "manager: get credential"
|
|
util.LogHandlerEntry(handler, r)
|
|
credentialName, err := pos(w, r, 2)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
cr, err := c.Manager.GetCredential(credentialName)
|
|
if err != nil {
|
|
httputil.BadRequest(w, r, err)
|
|
return nil
|
|
}
|
|
|
|
util.LogHandlerExitWithJSON(handler, w, cr, http.StatusOK)
|
|
return nil
|
|
}
|
|
|
|
func getJSONFromRequest(w http.ResponseWriter, r *http.Request, handler string) ([]byte, error) {
|
|
util.LogHandlerEntry(handler, r)
|
|
b := io.LimitReader(r.Body, *maxLength*1024)
|
|
y, err := ioutil.ReadAll(b)
|
|
if err != nil {
|
|
util.LogAndReturnError(handler, http.StatusBadRequest, err, w)
|
|
return []byte{}, err
|
|
}
|
|
|
|
// Reject the input if it exceeded the length limit,
|
|
// since we may not have read all of it into the buffer.
|
|
if _, err = b.Read(make([]byte, 0, 1)); err != io.EOF {
|
|
e := fmt.Errorf("template exceeds maximum length of %d KB", *maxLength)
|
|
util.LogAndReturnError(handler, http.StatusBadRequest, e, w)
|
|
return []byte{}, err
|
|
}
|
|
|
|
if err := r.Body.Close(); err != nil {
|
|
util.LogAndReturnError(handler, http.StatusInternalServerError, err, w)
|
|
return []byte{}, err
|
|
}
|
|
|
|
return yaml.YAMLToJSON(y)
|
|
}
|