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main.go
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/*
Copyright 2016 The Kubernetes Authors.
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 (
"bytes"
"context"
"crypto/sha256"
"encoding/base64"
"encoding/json"
"errors"
"flag"
"fmt"
"html/template"
"io/ioutil"
"net/http"
"net/url"
"os"
"path"
"strconv"
"strings"
"time"
"cloud.google.com/go/storage"
"github.com/NYTimes/gziphandler"
"github.com/gorilla/csrf"
"github.com/gorilla/sessions"
"github.com/prometheus/client_golang/prometheus"
"github.com/sirupsen/logrus"
"golang.org/x/oauth2"
"golang.org/x/oauth2/github"
"google.golang.org/api/option"
coreapi "k8s.io/api/core/v1"
kerrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
corev1 "k8s.io/client-go/kubernetes/typed/core/v1"
"k8s.io/test-infra/prow/interrupts"
"sigs.k8s.io/yaml"
prowapi "k8s.io/test-infra/prow/apis/prowjobs/v1"
prowv1 "k8s.io/test-infra/prow/client/clientset/versioned/typed/prowjobs/v1"
"k8s.io/test-infra/prow/config"
"k8s.io/test-infra/prow/config/secret"
"k8s.io/test-infra/prow/deck/jobs"
prowflagutil "k8s.io/test-infra/prow/flagutil"
"k8s.io/test-infra/prow/git"
prowgithub "k8s.io/test-infra/prow/github"
"k8s.io/test-infra/prow/githuboauth"
"k8s.io/test-infra/prow/kube"
"k8s.io/test-infra/prow/logrusutil"
"k8s.io/test-infra/prow/metrics"
"k8s.io/test-infra/prow/pjutil"
"k8s.io/test-infra/prow/pluginhelp"
"k8s.io/test-infra/prow/plugins"
"k8s.io/test-infra/prow/plugins/trigger"
"k8s.io/test-infra/prow/prstatus"
"k8s.io/test-infra/prow/spyglass"
// Import standard spyglass viewers
"k8s.io/test-infra/prow/spyglass/lenses"
_ "k8s.io/test-infra/prow/spyglass/lenses/buildlog"
_ "k8s.io/test-infra/prow/spyglass/lenses/coverage"
_ "k8s.io/test-infra/prow/spyglass/lenses/junit"
_ "k8s.io/test-infra/prow/spyglass/lenses/metadata"
)
// Omittable ProwJob fields.
const (
// Annotations maps to the serialized value of <ProwJob>.Annotations.
Annotations string = "annotations"
// Labels maps to the serialized value of <ProwJob>.Labels.
Labels string = "labels"
// DecorationConfig maps to the serialized value of <ProwJob>.Spec.DecorationConfig.
DecorationConfig string = "decoration_config"
// PodSpec maps to the serialized value of <ProwJob>.Spec.PodSpec.
PodSpec string = "pod_spec"
)
type options struct {
configPath string
jobConfigPath string
buildCluster string
kubernetes prowflagutil.KubernetesOptions
github prowflagutil.GitHubOptions
tideURL string
hookURL string
oauthURL string
githubOAuthConfigFile string
cookieSecretFile string
redirectHTTPTo string
hiddenOnly bool
pregeneratedData string
staticFilesLocation string
templateFilesLocation string
showHidden bool
spyglass bool
spyglassFilesLocation string
gcsCredentialsFile string
rerunCreatesJob bool
allowInsecure bool
dryRun bool
pluginConfig string
}
func (o *options) Validate() error {
if err := o.kubernetes.Validate(false); err != nil {
return err
}
if err := o.github.Validate(o.dryRun); err != nil {
return err
}
if o.configPath == "" {
return errors.New("required flag --config-path was unset")
}
// TODO(Katharine): remove this handling after 2019-10-31
// We used to set a default value for --cookie-secret-file, but we also have code that
// assumes we don't. If it's not set, but it is required that it is, and a file exists
// at the old default, we set it back to that default and emit an error.
if o.cookieSecretFile == "" && o.oauthURL != "" {
if _, err := os.Stat("/etc/cookie/secret"); err == nil {
o.cookieSecretFile = "/etc/cookie/secret"
logrus.Error("You haven't set --cookie-secret, but you're assuming it is set to '/etc/cookie/secret'. Add --cookie-secret=/etc/cookie/secret to your deck instance's arguments. Your configuration will stop working at the end of October 2019.")
}
}
if o.oauthURL != "" {
if o.githubOAuthConfigFile == "" {
return errors.New("an OAuth URL was provided but required flag --github-oauth-config-file was unset")
}
if o.cookieSecretFile == "" {
return errors.New("an OAuth URL was provided but required flag --cookie-secret was unset")
}
}
if o.hiddenOnly && o.showHidden {
return errors.New("'--hidden-only' and '--show-hidden' are mutually exclusive, the first one shows only hidden job, the second one shows both hidden and non-hidden jobs")
}
return nil
}
func gatherOptions(fs *flag.FlagSet, args ...string) options {
var o options
fs.StringVar(&o.configPath, "config-path", "", "Path to config.yaml.")
fs.StringVar(&o.jobConfigPath, "job-config-path", "", "Path to prow job configs.")
fs.StringVar(&o.tideURL, "tide-url", "", "Path to tide. If empty, do not serve tide data.")
fs.StringVar(&o.hookURL, "hook-url", "", "Path to hook plugin help endpoint.")
fs.StringVar(&o.oauthURL, "oauth-url", "", "Path to deck user dashboard endpoint.")
fs.StringVar(&o.githubOAuthConfigFile, "github-oauth-config-file", "/etc/github/secret", "Path to the file containing the GitHub App Client secret.")
fs.StringVar(&o.cookieSecretFile, "cookie-secret", "", "Path to the file containing the cookie secret key.")
// use when behind a load balancer
fs.StringVar(&o.redirectHTTPTo, "redirect-http-to", "", "Host to redirect http->https to based on x-forwarded-proto == http.")
// use when behind an oauth proxy
fs.BoolVar(&o.hiddenOnly, "hidden-only", false, "Show only hidden jobs. Useful for serving hidden jobs behind an oauth proxy.")
fs.StringVar(&o.pregeneratedData, "pregenerated-data", "", "Use API output from another prow instance. Used by the prow/cmd/deck/runlocal script")
fs.BoolVar(&o.showHidden, "show-hidden", false, "Show all jobs, including hidden ones")
fs.BoolVar(&o.spyglass, "spyglass", false, "Use Prow built-in job viewing instead of Gubernator")
fs.StringVar(&o.spyglassFilesLocation, "spyglass-files-location", "/lenses", "Location of the static files for spyglass.")
fs.StringVar(&o.staticFilesLocation, "static-files-location", "/static", "Path to the static files")
fs.StringVar(&o.templateFilesLocation, "template-files-location", "/template", "Path to the template files")
fs.StringVar(&o.gcsCredentialsFile, "gcs-credentials-file", "", "Path to the GCS credentials file")
fs.BoolVar(&o.rerunCreatesJob, "rerun-creates-job", false, "Change the re-run option in Deck to actually create the job. **WARNING:** Only use this with non-public deck instances, otherwise strangers can DOS your Prow instance")
fs.BoolVar(&o.allowInsecure, "allow-insecure", false, "Allows insecure requests for CSRF and GitHub oauth.")
fs.BoolVar(&o.dryRun, "dry-run", false, "Whether or not to make mutating API calls to GitHub.")
fs.StringVar(&o.pluginConfig, "plugin-config", "", "Path to plugin config file, probably /etc/plugins/plugins.yaml")
o.kubernetes.AddFlags(fs)
o.github.AddFlagsWithoutDefaultGitHubTokenPath(fs)
fs.Parse(args)
o.configPath = config.ConfigPath(o.configPath)
return o
}
func staticHandlerFromDir(dir string) http.Handler {
return gziphandler.GzipHandler(handleCached(http.FileServer(http.Dir(dir))))
}
var (
deckMetrics = struct {
httpRequestDuration *prometheus.HistogramVec
httpResponseSize *prometheus.HistogramVec
}{
httpRequestDuration: prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Name: "deck_http_request_duration_seconds",
Help: "http request duration in seconds",
Buckets: []float64{0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10, 20},
},
[]string{"path", "method", "status"},
),
httpResponseSize: prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Name: "deck_http_response_size_bytes",
Help: "http response size in bytes",
Buckets: []float64{16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304, 8388608, 16777216, 33554432},
},
[]string{"path", "method", "status"},
),
}
)
type authCfgGetter func() *prowapi.RerunAuthConfig
type traceResponseWriter struct {
http.ResponseWriter
statusCode int
size int
}
func (trw *traceResponseWriter) WriteHeader(code int) {
trw.statusCode = code
trw.ResponseWriter.WriteHeader(code)
}
func (trw *traceResponseWriter) Write(data []byte) (int, error) {
size, err := trw.ResponseWriter.Write(data)
trw.size += size
return size, err
}
func init() {
prometheus.MustRegister(deckMetrics.httpRequestDuration)
prometheus.MustRegister(deckMetrics.httpResponseSize)
}
func traceHandler(h http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
t := time.Now()
// Initialize the status to 200 in case WriteHeader is not called
trw := &traceResponseWriter{ResponseWriter: w, statusCode: http.StatusOK}
h.ServeHTTP(trw, r)
latency := time.Since(t)
labels := prometheus.Labels{"path": getPathPrefix(r.URL.Path), "method": r.Method, "status": strconv.Itoa(trw.statusCode)}
deckMetrics.httpRequestDuration.With(labels).Observe(latency.Seconds())
deckMetrics.httpResponseSize.With(labels).Observe(float64(trw.size))
})
}
func getPathPrefix(path string) string {
prefixes := []string{
"/tide",
"/plugin-help.js",
"/data.js",
"/prowjobs.js",
"/pr-data.js",
"/log",
"/rerun",
"/prowjob",
"/spyglass/",
"/view/",
"/job-history/",
"/pr-history/"}
for _, p := range prefixes {
if strings.HasPrefix(path, p) {
return p
}
}
// for other cases
return "others"
}
func main() {
logrusutil.ComponentInit("deck")
o := gatherOptions(flag.NewFlagSet(os.Args[0], flag.ExitOnError), os.Args[1:]...)
if err := o.Validate(); err != nil {
logrus.WithError(err).Fatal("Invalid options")
}
defer interrupts.WaitForGracefulShutdown()
pjutil.ServePProf()
// setup config agent, pod log clients etc.
configAgent := &config.Agent{}
if err := configAgent.Start(o.configPath, o.jobConfigPath); err != nil {
logrus.WithError(err).Fatal("Error starting config agent.")
}
cfg := configAgent.Config
var pluginAgent *plugins.ConfigAgent
if o.pluginConfig != "" {
pluginAgent = &plugins.ConfigAgent{}
if err := pluginAgent.Start(o.pluginConfig, false); err != nil {
logrus.WithError(err).Fatal("Error loading Prow plugin config.")
}
} else {
logrus.Info("No plugins configuration was provided to deck. You must provide one to reuse /test checks for rerun")
}
metrics.ExposeMetrics("deck", cfg().PushGateway)
// signal to the world that we are healthy
// this needs to be in a separate port as we don't start the
// main server with the main mux until we're ready
health := pjutil.NewHealth()
mux := http.NewServeMux()
// setup common handlers for local and deployed runs
mux.Handle("/static/", http.StripPrefix("/static", staticHandlerFromDir(o.staticFilesLocation)))
mux.Handle("/config", gziphandler.GzipHandler(handleConfig(cfg, logrus.WithField("handler", "/config"))))
mux.Handle("/plugin-config", gziphandler.GzipHandler(handlePluginConfig(pluginAgent, logrus.WithField("handler", "/plugin-config"))))
mux.Handle("/favicon.ico", gziphandler.GzipHandler(handleFavicon(o.staticFilesLocation, cfg)))
// Set up handlers for template pages.
mux.Handle("/pr", gziphandler.GzipHandler(handleSimpleTemplate(o, cfg, "pr.html", nil)))
mux.Handle("/command-help", gziphandler.GzipHandler(handleSimpleTemplate(o, cfg, "command-help.html", nil)))
mux.Handle("/plugin-help", http.RedirectHandler("/command-help", http.StatusMovedPermanently))
mux.Handle("/tide", gziphandler.GzipHandler(handleSimpleTemplate(o, cfg, "tide.html", nil)))
mux.Handle("/tide-history", gziphandler.GzipHandler(handleSimpleTemplate(o, cfg, "tide-history.html", nil)))
mux.Handle("/plugins", gziphandler.GzipHandler(handleSimpleTemplate(o, cfg, "plugins.html", nil)))
runLocal := o.pregeneratedData != ""
var fallbackHandler func(http.ResponseWriter, *http.Request)
if runLocal {
localDataHandler := staticHandlerFromDir(o.pregeneratedData)
fallbackHandler = localDataHandler.ServeHTTP
} else {
fallbackHandler = http.NotFound
}
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/" {
fallbackHandler(w, r)
return
}
indexHandler := handleSimpleTemplate(o, cfg, "index.html", struct {
SpyglassEnabled bool
ReRunCreatesJob bool
AllowAnyone bool
}{
SpyglassEnabled: o.spyglass,
ReRunCreatesJob: o.rerunCreatesJob,
AllowAnyone: cfg().Deck.RerunAuthConfig.AllowAnyone})
indexHandler(w, r)
})
if runLocal {
mux = localOnlyMain(cfg, o, mux)
} else {
mux = prodOnlyMain(cfg, pluginAgent, o, mux)
}
// signal to the world that we're ready
health.ServeReady()
// cookie secret will be used for CSRF protection and should be exactly 32 bytes
// we sometimes accept different lengths to stay backwards compatible
var csrfToken []byte
if o.cookieSecretFile != "" {
cookieSecretRaw, err := loadToken(o.cookieSecretFile)
if err != nil {
logrus.WithError(err).Fatal("Could not read cookie secret file")
}
decodedSecret, err := base64.StdEncoding.DecodeString(string(cookieSecretRaw))
if err != nil {
logrus.WithError(err).Fatal("Error decoding cookie secret")
}
if len(decodedSecret) == 32 {
csrfToken = decodedSecret
}
if len(decodedSecret) > 32 {
logrus.Warning("Cookie secret should be exactly 32 bytes. Consider truncating the existing cookie to that length")
hash := sha256.Sum256(decodedSecret)
csrfToken = hash[:]
}
if len(decodedSecret) < 32 {
if o.rerunCreatesJob {
logrus.Fatal("Cookie secret must be exactly 32 bytes")
return
}
logrus.Warning("Cookie secret should be exactly 32 bytes")
}
}
// if we allow direct reruns, we must protect against CSRF in all post requests using the cookie secret as a token
// for more information about CSRF, see https://github.com/kubernetes/test-infra/blob/master/prow/cmd/deck/csrf.md
if o.rerunCreatesJob && csrfToken == nil && !cfg().Deck.RerunAuthConfig.AllowAnyone {
logrus.Fatal("Rerun creates job cannot be enabled without CSRF protection, which requires --cookie-secret to be exactly 32 bytes")
return
}
if csrfToken != nil {
CSRF := csrf.Protect(csrfToken, csrf.Path("/"), csrf.Secure(!o.allowInsecure))
logrus.WithError(http.ListenAndServe(":8080", CSRF(traceHandler(mux)))).Fatal("ListenAndServe returned.")
return
}
// setup done, actually start the server
server := &http.Server{Addr: ":8080", Handler: traceHandler(mux)}
interrupts.ListenAndServe(server, 5*time.Second)
}
// localOnlyMain contains logic used only when running locally, and is mutually exclusive with
// prodOnlyMain.
func localOnlyMain(cfg config.Getter, o options, mux *http.ServeMux) *http.ServeMux {
mux.Handle("/github-login", gziphandler.GzipHandler(handleSimpleTemplate(o, cfg, "github-login.html", nil)))
if o.spyglass {
initSpyglass(cfg, o, mux, nil, nil, nil)
}
return mux
}
type podLogClient struct {
client corev1.PodInterface
}
func (c *podLogClient) GetLogs(name string, opts *coreapi.PodLogOptions) ([]byte, error) {
reader, err := c.client.GetLogs(name, &coreapi.PodLogOptions{Container: kube.TestContainerName}).Stream()
if err != nil {
return nil, err
}
defer reader.Close()
return ioutil.ReadAll(reader)
}
type filteringProwJobLister struct {
client prowv1.ProwJobInterface
hiddenRepos sets.String
hiddenOnly bool
showHidden bool
}
func (c *filteringProwJobLister) ListProwJobs(selector string) ([]prowapi.ProwJob, error) {
prowJobList, err := c.client.List(metav1.ListOptions{LabelSelector: selector})
if err != nil {
return nil, err
}
var filtered []prowapi.ProwJob
for _, item := range prowJobList.Items {
refs := item.Spec.Refs
if refs == nil {
if len(item.Spec.ExtraRefs) > 0 {
refs = &item.Spec.ExtraRefs[0]
} else {
refs = &prowapi.Refs{}
}
}
shouldHide := c.hiddenRepos.HasAny(fmt.Sprintf("%s/%s", refs.Org, refs.Repo), refs.Org) || item.Spec.Hidden
if shouldHide && c.showHidden {
filtered = append(filtered, item)
} else if shouldHide == c.hiddenOnly {
// this is a hidden job, show it if we're asked
// to only show hidden jobs otherwise hide it
filtered = append(filtered, item)
}
}
return filtered, nil
}
// prodOnlyMain contains logic only used when running deployed, not locally
func prodOnlyMain(cfg config.Getter, pluginAgent *plugins.ConfigAgent, o options, mux *http.ServeMux) *http.ServeMux {
prowJobClient, err := o.kubernetes.ProwJobClient(cfg().ProwJobNamespace, false)
if err != nil {
logrus.WithError(err).Fatal("Error getting ProwJob client for infrastructure cluster.")
}
buildClusterClients, err := o.kubernetes.BuildClusterClients(cfg().PodNamespace, false)
if err != nil {
logrus.WithError(err).Fatal("Error getting Kubernetes client.")
}
podLogClients := map[string]jobs.PodLogClient{}
for clusterContext, client := range buildClusterClients {
podLogClients[clusterContext] = &podLogClient{client: client}
}
ja := jobs.NewJobAgent(&filteringProwJobLister{
client: prowJobClient,
hiddenRepos: sets.NewString(cfg().Deck.HiddenRepos...),
hiddenOnly: o.hiddenOnly,
showHidden: o.showHidden,
}, podLogClients, cfg)
ja.Start()
cfgGetter := func() *prowapi.RerunAuthConfig { return &cfg().Deck.RerunAuthConfig }
// setup prod only handlers
mux.Handle("/data.js", gziphandler.GzipHandler(handleData(ja, logrus.WithField("handler", "/data.js"))))
mux.Handle("/prowjobs.js", gziphandler.GzipHandler(handleProwJobs(ja, logrus.WithField("handler", "/prowjobs.js"))))
mux.Handle("/badge.svg", gziphandler.GzipHandler(handleBadge(ja)))
mux.Handle("/log", gziphandler.GzipHandler(handleLog(ja, logrus.WithField("handler", "/log"))))
mux.Handle("/prowjob", gziphandler.GzipHandler(handleProwJob(prowJobClient, logrus.WithField("handler", "/prowjob"))))
// We use the GH client to resolve GH teams when determining who is permitted to rerun a job.
// When inrepoconfig is enabled, both the GitHubClient and the gitClient are used to resolve
// presubmits dynamically which we need for the PR history page.
var githubClient deckGitHubClient
var gitClient *git.Client
secretAgent := &secret.Agent{}
if o.github.TokenPath != "" {
if err := secretAgent.Start([]string{o.github.TokenPath}); err != nil {
logrus.WithError(err).Fatal("Error starting secrets agent.")
}
githubClient, err = o.github.GitHubClient(secretAgent, o.dryRun)
if err != nil {
logrus.WithError(err).Fatal("Error getting GitHub client.")
}
gitClient, err = o.github.GitClient(secretAgent, o.dryRun)
if err != nil {
logrus.WithError(err).Fatal("Error getting Git client.")
}
}
if o.spyglass {
initSpyglass(cfg, o, mux, ja, githubClient, gitClient)
}
if o.hookURL != "" {
mux.Handle("/plugin-help.js",
gziphandler.GzipHandler(handlePluginHelp(newHelpAgent(o.hookURL), logrus.WithField("handler", "/plugin-help.js"))))
}
if o.tideURL != "" {
ta := &tideAgent{
log: logrus.WithField("agent", "tide"),
path: o.tideURL,
updatePeriod: func() time.Duration {
return cfg().Deck.TideUpdatePeriod.Duration
},
hiddenRepos: cfg().Deck.HiddenRepos,
hiddenOnly: o.hiddenOnly,
showHidden: o.showHidden,
}
ta.start()
mux.Handle("/tide.js", gziphandler.GzipHandler(handleTidePools(cfg, ta, logrus.WithField("handler", "/tide.js"))))
mux.Handle("/tide-history.js", gziphandler.GzipHandler(handleTideHistory(ta, logrus.WithField("handler", "/tide-history.js"))))
}
// Enable Git OAuth feature if oauthURL is provided.
var goa *githuboauth.Agent
if o.oauthURL != "" {
githubOAuthConfigRaw, err := loadToken(o.githubOAuthConfigFile)
if err != nil {
logrus.WithError(err).Fatal("Could not read github oauth config file.")
}
cookieSecretRaw, err := loadToken(o.cookieSecretFile)
if err != nil {
logrus.WithError(err).Fatal("Could not read cookie secret file.")
}
var githubOAuthConfig config.GitHubOAuthConfig
if err := yaml.Unmarshal(githubOAuthConfigRaw, &githubOAuthConfig); err != nil {
logrus.WithError(err).Fatal("Error unmarshalling github oauth config")
}
if !isValidatedGitOAuthConfig(&githubOAuthConfig) {
logrus.Fatal("Error invalid github oauth config")
}
decodedSecret, err := base64.StdEncoding.DecodeString(string(cookieSecretRaw))
if err != nil {
logrus.WithError(err).Fatal("Error decoding cookie secret")
}
if len(decodedSecret) == 0 {
logrus.Fatal("Cookie secret should not be empty")
}
cookie := sessions.NewCookieStore(decodedSecret)
githubOAuthConfig.InitGitHubOAuthConfig(cookie)
goa = githuboauth.NewAgent(&githubOAuthConfig, logrus.WithField("client", "githuboauth"))
oauthClient := githuboauth.NewClient(&oauth2.Config{
ClientID: githubOAuthConfig.ClientID,
ClientSecret: githubOAuthConfig.ClientSecret,
RedirectURL: githubOAuthConfig.RedirectURL,
Scopes: githubOAuthConfig.Scopes,
Endpoint: github.Endpoint,
},
)
repos := cfg().AllRepos.List()
prStatusAgent := prstatus.NewDashboardAgent(
repos,
&githubOAuthConfig,
logrus.WithField("client", "pr-status"))
secure := !o.allowInsecure
mux.Handle("/pr-data.js", handleNotCached(
prStatusAgent.HandlePrStatus(prStatusAgent)))
// Handles login request.
mux.Handle("/github-login", goa.HandleLogin(oauthClient, secure))
// Handles redirect from GitHub OAuth server.
mux.Handle("/github-login/redirect", goa.HandleRedirect(oauthClient, githuboauth.NewGitHubClientGetter(), secure))
}
mux.Handle("/rerun", gziphandler.GzipHandler(handleRerun(prowJobClient, o.rerunCreatesJob, cfgGetter, goa, githuboauth.NewGitHubClientGetter(), githubClient, pluginAgent, logrus.WithField("handler", "/rerun"))))
// optionally inject http->https redirect handler when behind loadbalancer
if o.redirectHTTPTo != "" {
redirectMux := http.NewServeMux()
redirectMux.Handle("/", func(oldMux *http.ServeMux, host string) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
if r.Header.Get("x-forwarded-proto") == "http" {
redirectURL, err := url.Parse(r.URL.String())
if err != nil {
logrus.Errorf("Failed to parse URL: %s.", r.URL.String())
http.Error(w, "Failed to perform https redirect.", http.StatusInternalServerError)
return
}
redirectURL.Scheme = "https"
redirectURL.Host = host
http.Redirect(w, r, redirectURL.String(), http.StatusMovedPermanently)
} else {
oldMux.ServeHTTP(w, r)
}
}
}(mux, o.redirectHTTPTo))
mux = redirectMux
}
return mux
}
func initSpyglass(cfg config.Getter, o options, mux *http.ServeMux, ja *jobs.JobAgent, gitHubClient deckGitHubClient, gitClient *git.Client) {
var c *storage.Client
var err error
if o.gcsCredentialsFile == "" {
c, err = storage.NewClient(context.Background(), option.WithoutAuthentication())
} else {
c, err = storage.NewClient(context.Background(), option.WithCredentialsFile(o.gcsCredentialsFile))
}
if err != nil {
logrus.WithError(err).Fatal("Error getting GCS client")
}
sg := spyglass.New(ja, cfg, c, o.gcsCredentialsFile, context.Background())
sg.Start()
mux.Handle("/spyglass/static/", http.StripPrefix("/spyglass/static", staticHandlerFromDir(o.spyglassFilesLocation)))
mux.Handle("/spyglass/lens/", gziphandler.GzipHandler(http.StripPrefix("/spyglass/lens/", handleArtifactView(o, sg, cfg))))
mux.Handle("/view/", gziphandler.GzipHandler(handleRequestJobViews(sg, cfg, o, logrus.WithField("handler", "/view"))))
mux.Handle("/job-history/", gziphandler.GzipHandler(handleJobHistory(o, cfg, c, logrus.WithField("handler", "/job-history"))))
mux.Handle("/pr-history/", gziphandler.GzipHandler(handlePRHistory(o, cfg, c, gitHubClient, gitClient, logrus.WithField("handler", "/pr-history"))))
}
func loadToken(file string) ([]byte, error) {
raw, err := ioutil.ReadFile(file)
if err != nil {
return []byte{}, err
}
return bytes.TrimSpace(raw), nil
}
// copy a http.Request
// see: https://go-review.googlesource.com/c/go/+/36483/3/src/net/http/server.go
func dupeRequest(original *http.Request) *http.Request {
r2 := new(http.Request)
*r2 = *original
r2.URL = new(url.URL)
*r2.URL = *original.URL
return r2
}
func handleCached(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// This looks ridiculous but actually no-cache means "revalidate" and
// "max-age=0" just means there is no time in which it can skip
// revalidation. We also need to set must-revalidate because no-cache
// doesn't imply must-revalidate when using the back button
// https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.1
// TODO: consider setting a longer max-age
// setting it this way means the content is always revalidated
w.Header().Set("Cache-Control", "public, max-age=0, no-cache, must-revalidate")
next.ServeHTTP(w, r)
})
}
func setHeadersNoCaching(w http.ResponseWriter) {
// Note that we need to set both no-cache and no-store because only some
// browsers decided to (incorrectly) treat no-cache as "never store"
// IE "no-store". for good measure to cover older browsers we also set
// expires and pragma: https://stackoverflow.com/a/2068407
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
w.Header().Set("Pragma", "no-cache")
w.Header().Set("Expires", "0")
}
func writeJSONResponse(w http.ResponseWriter, r *http.Request, d []byte) {
// If we have a "var" query, then write out "var value = {...};".
// Otherwise, just write out the JSON.
if v := r.URL.Query().Get("var"); v != "" {
w.Header().Set("Content-Type", "application/javascript")
fmt.Fprintf(w, "var %s = %s;", v, string(d))
} else {
w.Header().Set("Content-Type", "application/json")
fmt.Fprint(w, string(d))
}
}
func handleNotCached(next http.Handler) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
setHeadersNoCaching(w)
next.ServeHTTP(w, r)
}
}
func handleProwJobs(ja *jobs.JobAgent, log *logrus.Entry) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
setHeadersNoCaching(w)
jobs := ja.ProwJobs()
omit := r.URL.Query().Get("omit")
if set := sets.NewString(strings.Split(omit, ",")...); set.Len() > 0 {
for i := range jobs {
if set.Has(Annotations) {
jobs[i].Annotations = nil
}
if set.Has(Labels) {
jobs[i].Labels = nil
}
if set.Has(DecorationConfig) {
jobs[i].Spec.DecorationConfig = nil
}
if set.Has(PodSpec) {
jobs[i].Spec.PodSpec = nil
}
}
}
jd, err := json.Marshal(struct {
Items []prowapi.ProwJob `json:"items"`
}{jobs})
if err != nil {
log.WithError(err).Error("Error marshaling jobs.")
jd = []byte("{}")
}
writeJSONResponse(w, r, jd)
}
}
func handleData(ja *jobs.JobAgent, log *logrus.Entry) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
setHeadersNoCaching(w)
jobs := ja.Jobs()
jd, err := json.Marshal(jobs)
if err != nil {
log.WithError(err).Error("Error marshaling jobs.")
jd = []byte("[]")
}
writeJSONResponse(w, r, jd)
}
}
// handleBadge handles requests to get a badge for one or more jobs
// The url must look like this, where `jobs` is a comma-separated
// list of globs:
//
// /badge.svg?jobs=<glob>[,<glob2>]
//
// Examples:
// - /badge.svg?jobs=pull-kubernetes-bazel-build
// - /badge.svg?jobs=pull-kubernetes-*
// - /badge.svg?jobs=pull-kubernetes-e2e*,pull-kubernetes-*,pull-kubernetes-integration-*
func handleBadge(ja *jobs.JobAgent) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
setHeadersNoCaching(w)
wantJobs := r.URL.Query().Get("jobs")
if wantJobs == "" {
http.Error(w, "missing jobs query parameter", http.StatusBadRequest)
return
}
w.Header().Set("Content-Type", "image/svg+xml")
allJobs := ja.ProwJobs()
_, _, svg := renderBadge(pickLatestJobs(allJobs, wantJobs))
w.Write(svg)
}
}
// handleJobHistory handles requests to get the history of a given job
// The url must look like this for presubmits:
//
// /job-history/<gcs-bucket-name>/pr-logs/directory/<job-name>
//
// Example:
// - /job-history/kubernetes-jenkins/pr-logs/directory/pull-test-infra-verify-gofmt
//
// For periodics or postsubmits, the url must look like this:
//
// /job-history/<gcs-bucket-name>/logs/<job-name>
//
// Example:
// - /job-history/kubernetes-jenkins/logs/ci-kubernetes-e2e-prow-canary
func handleJobHistory(o options, cfg config.Getter, gcsClient *storage.Client, log *logrus.Entry) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
setHeadersNoCaching(w)
tmpl, err := getJobHistory(r.URL, cfg(), gcsClient)
if err != nil {
msg := fmt.Sprintf("failed to get job history: %v", err)
log.WithField("url", r.URL).Error(msg)
http.Error(w, msg, http.StatusInternalServerError)
return
}
handleSimpleTemplate(o, cfg, "job-history.html", tmpl)(w, r)
}
}
// handlePRHistory handles requests to get the test history if a given PR
// The url must look like this:
//
// /pr-history?org=<org>&repo=<repo>&pr=<pr number>
func handlePRHistory(o options, cfg config.Getter, gcsClient *storage.Client, gitHubClient deckGitHubClient, gitClient *git.Client, log *logrus.Entry) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
setHeadersNoCaching(w)
tmpl, err := getPRHistory(r.URL, cfg(), gcsClient, gitHubClient, gitClient)
if err != nil {
msg := fmt.Sprintf("failed to get PR history: %v", err)
log.WithField("url", r.URL).Info(msg)
http.Error(w, msg, http.StatusInternalServerError)
return
}
handleSimpleTemplate(o, cfg, "pr-history.html", tmpl)(w, r)
}
}
// handleRequestJobViews handles requests to get all available artifact views for a given job.
// The url must specify a storage key type, such as "prowjob" or "gcs":
//
// /view/<key-type>/<key>
//
// Examples:
// - /view/gcs/kubernetes-jenkins/pr-logs/pull/test-infra/9557/pull-test-infra-verify-gofmt/15688/
// - /view/prowjob/echo-test/1046875594609922048
func handleRequestJobViews(sg *spyglass.Spyglass, cfg config.Getter, o options, log *logrus.Entry) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
start := time.Now()
setHeadersNoCaching(w)
src := strings.TrimPrefix(r.URL.Path, "/view/")
csrfToken := csrf.Token(r)
page, err := renderSpyglass(sg, cfg, src, o, csrfToken, log)
if err != nil {
log.WithError(err).Error("error rendering spyglass page")
message := fmt.Sprintf("error rendering spyglass page: %v", err)
http.Error(w, message, http.StatusInternalServerError)
return
}
fmt.Fprint(w, page)
elapsed := time.Since(start)
log.WithFields(logrus.Fields{
"duration": elapsed.String(),
"endpoint": r.URL.Path,
"source": src,
}).Info("Loading view completed.")
}
}
// renderSpyglass returns a pre-rendered Spyglass page from the given source string
func renderSpyglass(sg *spyglass.Spyglass, cfg config.Getter, src string, o options, csrfToken string, log *logrus.Entry) (string, error) {
renderStart := time.Now()
src = strings.TrimSuffix(src, "/")
realPath, err := sg.ResolveSymlink(src)
if err != nil {
return "", fmt.Errorf("error when resolving real path: %v", err)
}
src = realPath
artifactNames, err := sg.ListArtifacts(src)
if err != nil {
return "", fmt.Errorf("error listing artifacts: %v", err)
}
if len(artifactNames) == 0 {
return "", fmt.Errorf("found no artifacts for %s", src)
}
regexCache := cfg().Deck.Spyglass.RegexCache
lensCache := map[int][]string{}
var lensIndexes []int
lensesLoop:
for i, lfc := range cfg().Deck.Spyglass.Lenses {
matches := map[string]struct{}{}
for _, re := range lfc.RequiredFiles {
found := false
for _, a := range artifactNames {
if regexCache[re].MatchString(a) {
matches[a] = struct{}{}
found = true
}
}
if !found {
continue lensesLoop
}
}
for _, re := range lfc.OptionalFiles {
for _, a := range artifactNames {
if regexCache[re].MatchString(a) {
matches[a] = struct{}{}
}
}
}
matchSlice := make([]string, 0, len(matches))
for k := range matches {
matchSlice = append(matchSlice, k)
}
lensCache[i] = matchSlice
lensIndexes = append(lensIndexes, i)
}
lensIndexes, ls := sg.Lenses(lensIndexes)
jobHistLink := ""
jobPath, err := sg.JobPath(src)
if err == nil {
jobHistLink = path.Join("/job-history", jobPath)
}
var prowJobLink string
prowJobName, err := sg.ProwJobName(src)
if err == nil {
if prowJobName != "" {
u, err := url.Parse("/prowjob")
if err != nil {
return "", fmt.Errorf("error parsing prowjob path: %v", err)
}
query := url.Values{}
query.Set("prowjob", prowJobName)
u.RawQuery = query.Encode()
prowJobLink = u.String()
}
} else {
log.WithError(err).Warningf("Error getting ProwJob name for source %q.", src)
}
artifactsLink := ""
gcswebPrefix := cfg().Deck.Spyglass.GCSBrowserPrefix
if gcswebPrefix != "" {
runPath, err := sg.RunPath(src)
if err == nil {
artifactsLink = gcswebPrefix + runPath
// gcsweb wants us to end URLs with a trailing slash
if !strings.HasSuffix(artifactsLink, "/") {
artifactsLink += "/"
}
}
}
prHistLink := ""
org, repo, number, err := sg.RunToPR(src)
if err == nil {
prHistLink = "/pr-history?org=" + org + "&repo=" + repo + "&pr=" + strconv.Itoa(number)
}
jobName, buildID, err := sg.KeyToJob(src)
if err != nil {
return "", fmt.Errorf("error determining jobName / buildID: %v", err)
}
prLink := ""
j, err := sg.JobAgent.GetProwJob(jobName, buildID)
if err == nil && j.Spec.Refs != nil && len(j.Spec.Refs.Pulls) > 0 {
prLink = j.Spec.Refs.Pulls[0].Link
}
announcement := ""
if cfg().Deck.Spyglass.Announcement != "" {
announcementTmpl, err := template.New("announcement").Parse(cfg().Deck.Spyglass.Announcement)
if err != nil {
return "", fmt.Errorf("error parsing announcement template: %v", err)
}
runPath, err := sg.RunPath(src)
if err != nil {
runPath = ""
}
var announcementBuf bytes.Buffer
err = announcementTmpl.Execute(&announcementBuf, struct {
ArtifactPath string
}{
ArtifactPath: runPath,
})
if err != nil {
return "", fmt.Errorf("error executing announcement template: %v", err)
}
announcement = announcementBuf.String()
}