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pr_history.go
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pr_history.go
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/*
Copyright 2018 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 (
"context"
"errors"
"fmt"
"net/url"
"path"
"regexp"
"sort"
"strconv"
"strings"
"time"
"github.com/sirupsen/logrus"
"k8s.io/apimachinery/pkg/util/sets"
v1 "k8s.io/test-infra/prow/apis/prowjobs/v1"
"k8s.io/test-infra/prow/config"
"k8s.io/test-infra/prow/gcsupload"
"k8s.io/test-infra/prow/git/v2"
"k8s.io/test-infra/prow/io"
"k8s.io/test-infra/prow/pod-utils/downwardapi"
)
var pullCommitRe = regexp.MustCompile(`^[-\.\w]+:\w{40},\d+:(\w{40})$`)
type prHistoryTemplate struct {
Link string
Name string
Jobs []prJobData
Commits []commitData
}
type prJobData struct {
Name string
Link string
Builds []buildData
}
type jobBuilds struct {
name string
buildPrefixes []string
}
type commitData struct {
Hash string
HashPrefix string // used only for display purposes, so don't worry about uniqueness
Link string
MaxWidth int
latest time.Time // time stamp of the job most recently started
}
type latestCommit []commitData
func (a latestCommit) Len() int { return len(a) }
func (a latestCommit) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a latestCommit) Less(i, j int) bool {
if len(a[i].Hash) != 40 {
return true
}
if len(a[j].Hash) != 40 {
return false
}
return a[i].latest.Before(a[j].latest)
}
type byStarted []buildData
func (a byStarted) Len() int { return len(a) }
func (a byStarted) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a byStarted) Less(i, j int) bool { return a[i].Started.Before(a[j].Started) }
func githubPRLink(githubHost, org, repo string, pr int) string {
return fmt.Sprintf("https://%s/%s/%s/pull/%d", githubHost, org, repo, pr)
}
func githubCommitLink(githubHost, org, repo, commitHash string) string {
return fmt.Sprintf("https://%s/%s/%s/commit/%s", githubHost, org, repo, commitHash)
}
func jobHistLink(storageProvider, bucketName, jobName string) string {
return fmt.Sprintf("/job-history/%s/%s/pr-logs/directory/%s", storageProvider, bucketName, jobName)
}
// gets the pull commit hash from metadata
func getPullCommitHash(pull string) (string, error) {
match := pullCommitRe.FindStringSubmatch(pull)
if len(match) != 2 {
expected := "branch:hash,pullNumber:hash"
return "", fmt.Errorf("unable to parse pull %q (expected %q)", pull, expected)
}
return match[1], nil
}
// listJobBuilds concurrently lists builds for the given job prefixes that have been run on a PR
func listJobBuilds(ctx context.Context, bucket storageBucket, jobPrefixes []string) []jobBuilds {
jobch := make(chan jobBuilds)
defer close(jobch)
for i, jobPrefix := range jobPrefixes {
go func(i int, jobPrefix string) {
buildPrefixes, err := bucket.listSubDirs(ctx, jobPrefix)
if err != nil {
logrus.WithError(err).Warningf("Error getting builds for job %s", jobPrefix)
}
jobch <- jobBuilds{
name: path.Base(jobPrefix),
buildPrefixes: buildPrefixes,
}
}(i, jobPrefix)
}
jobs := []jobBuilds{}
for range jobPrefixes {
job := <-jobch
jobs = append(jobs, job)
}
return jobs
}
// getPRBuildData concurrently fetches metadata on each build of each job run on a PR
func getPRBuildData(ctx context.Context, bucket storageBucket, jobs []jobBuilds) []buildData {
buildch := make(chan buildData)
defer close(buildch)
expected := 0
for _, job := range jobs {
for j, buildPrefix := range job.buildPrefixes {
go func(j int, jobName, buildPrefix string) {
build, err := getBuildData(ctx, bucket, buildPrefix)
if err != nil {
logrus.WithError(err).Warningf("build %s information incomplete", buildPrefix)
}
split := strings.Split(strings.TrimSuffix(buildPrefix, "/"), "/")
build.SpyglassLink = path.Join(spyglassPrefix, bucket.getStorageProvider(), bucket.getName(), buildPrefix)
build.ID = split[len(split)-1]
build.jobName = jobName
build.prefix = buildPrefix
build.index = j
buildch <- build
}(j, job.name, buildPrefix)
expected++
}
}
builds := []buildData{}
for k := 0; k < expected; k++ {
build := <-buildch
builds = append(builds, build)
}
return builds
}
func updateCommitData(commits map[string]*commitData, githubHost, org, repo, hash string, buildTime time.Time, width int) {
commit, ok := commits[hash]
if !ok {
commits[hash] = &commitData{
Hash: hash,
HashPrefix: hash,
}
commit = commits[hash]
if len(hash) == 40 {
commit.HashPrefix = hash[:7]
commit.Link = githubCommitLink(githubHost, org, repo, hash)
}
}
if buildTime.After(commit.latest) {
commit.latest = buildTime
}
if width > commit.MaxWidth {
commit.MaxWidth = width
}
}
// parsePullURL parses PR history URLs. Expects this format:
// .../pr-history?org=<org>&repo=<repo>&pr=<pr number>
func parsePullURL(u *url.URL) (org, repo string, pr int, err error) {
var prStr string
vals := u.Query()
if org = vals.Get("org"); org == "" {
return "", "", 0, fmt.Errorf("no value provided for org")
}
if repo = vals.Get("repo"); repo == "" {
return "", "", 0, fmt.Errorf("no value provided for repo")
}
prStr = vals.Get("pr")
pr, err = strconv.Atoi(prStr)
if err != nil {
return "", "", 0, fmt.Errorf("invalid PR number %q: %v", prStr, err)
}
return org, repo, pr, nil
}
// getStorageDirsForPR returns a map from bucket names -> set of "directories" containing presubmit data
func getStorageDirsForPR(c *config.Config, gitHubClient deckGitHubClient, gitClient git.ClientFactory, org, repo string, prNumber int) (map[string]sets.String, error) {
toSearch := make(map[string]sets.String)
fullRepo := org + "/" + repo
if c.InRepoConfigEnabled(fullRepo) && gitHubClient == nil {
return nil, errors.New("inrepoconfig is enabled but no --github-token-path configured on deck")
}
prRefGetter := config.NewRefGetterForGitHubPullRequest(gitHubClient, org, repo, prNumber)
presubmits, err := c.GetPresubmits(gitClient, org+"/"+repo, prRefGetter.BaseSHA, prRefGetter.HeadSHA)
if err != nil {
return nil, fmt.Errorf("failed to get Presubmits for pull request %s/%s#%d: %v", org, repo, prNumber, err)
}
if len(presubmits) == 0 {
return toSearch, fmt.Errorf("couldn't find presubmits for %q in config", fullRepo)
}
for _, presubmit := range presubmits {
var gcsConfig *v1.GCSConfiguration
if presubmit.DecorationConfig != nil && presubmit.DecorationConfig.GCSConfiguration != nil {
gcsConfig = presubmit.DecorationConfig.GCSConfiguration
} else {
// for undecorated jobs assume the default
def := c.Plank.GuessDefaultDecorationConfig(fullRepo, presubmit.Cluster)
if def == nil || def.GCSConfiguration == nil {
return toSearch, fmt.Errorf("failed to guess gcs config based on default decoration config: %w", err)
}
gcsConfig = def.GCSConfiguration
}
gcsPath, _, _ := gcsupload.PathsForJob(gcsConfig, &downwardapi.JobSpec{
Type: v1.PresubmitJob,
Job: presubmit.Name,
Refs: &v1.Refs{
Repo: repo,
Org: org,
Pulls: []v1.Pull{
{Number: prNumber},
},
},
}, "")
gcsPath, _ = path.Split(path.Clean(gcsPath))
bucketName := gcsConfig.Bucket
// bucket is the bucket field of the GCSConfiguration, which means it could be missing the
// storageProvider prefix (but it's deprecated to use a bucket name without <storage-type>:// prefix)
if !strings.Contains(bucketName, "://") {
bucketName = "gs://" + bucketName
}
if _, ok := toSearch[bucketName]; !ok {
toSearch[bucketName] = sets.String{}
}
toSearch[bucketName].Insert(gcsPath)
}
return toSearch, nil
}
func getPRHistory(ctx context.Context, prHistoryURL *url.URL, config *config.Config, opener io.Opener, gitHubClient deckGitHubClient, gitClient git.ClientFactory, githubHost string) (prHistoryTemplate, error) {
start := time.Now()
template := prHistoryTemplate{}
org, repo, pr, err := parsePullURL(prHistoryURL)
if err != nil {
return template, fmt.Errorf("failed to parse URL %s: %v", prHistoryURL.String(), err)
}
template.Name = fmt.Sprintf("%s/%s #%d", org, repo, pr)
template.Link = githubPRLink(githubHost, org, repo, pr) // TODO(ibzib) support Gerrit :/
toSearch, err := getStorageDirsForPR(config, gitHubClient, gitClient, org, repo, pr)
if err != nil {
return template, fmt.Errorf("failed to list directories for PR %s: %v", template.Name, err)
}
builds := []buildData{}
// job name -> commit hash -> list of builds
jobCommitBuilds := make(map[string]map[string][]buildData)
for bucket, storagePaths := range toSearch {
parsedBucket, err := url.Parse(bucket)
if err != nil {
return template, fmt.Errorf("parse bucket %s: %w", bucket, err)
}
bucketName := parsedBucket.Host
storageProvider := parsedBucket.Scheme
bucket, err := newBlobStorageBucket(bucketName, storageProvider, config, opener)
if err != nil {
return template, err
}
for storagePath := range storagePaths {
jobPrefixes, err := bucket.listSubDirs(ctx, storagePath)
if err != nil {
return template, fmt.Errorf("failed to get job names: %v", err)
}
// We assume job names to be unique, as enforced during config validation.
for _, jobPrefix := range jobPrefixes {
jobName := path.Base(jobPrefix)
jobData := prJobData{
Name: jobName,
Link: jobHistLink(storageProvider, bucketName, jobName),
}
template.Jobs = append(template.Jobs, jobData)
jobCommitBuilds[jobName] = make(map[string][]buildData)
}
jobs := listJobBuilds(ctx, bucket, jobPrefixes)
builds = append(builds, getPRBuildData(ctx, bucket, jobs)...)
}
}
commits := make(map[string]*commitData)
for _, build := range builds {
jobName := build.jobName
hash := build.commitHash
jobCommitBuilds[jobName][hash] = append(jobCommitBuilds[jobName][hash], build)
updateCommitData(commits, githubHost, org, repo, hash, build.Started, len(jobCommitBuilds[jobName][hash]))
}
for _, commit := range commits {
template.Commits = append(template.Commits, *commit)
}
// builds are grouped by commit, then sorted by build start time (newest-first)
sort.Sort(sort.Reverse(latestCommit(template.Commits)))
for i, job := range template.Jobs {
for _, commit := range template.Commits {
builds := jobCommitBuilds[job.Name][commit.Hash]
sort.Sort(sort.Reverse(byStarted(builds)))
template.Jobs[i].Builds = append(template.Jobs[i].Builds, builds...)
// pad empty spaces
for k := len(builds); k < commit.MaxWidth; k++ {
template.Jobs[i].Builds = append(template.Jobs[i].Builds, buildData{})
}
}
}
elapsed := time.Since(start)
logrus.WithField("duration", elapsed.String()).Infof("loaded %s", prHistoryURL.Path)
return template, nil
}