| // Copyright 2015 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package main |
| |
| import ( |
| "bytes" |
| "encoding/json" |
| "errors" |
| "fmt" |
| "log" |
| "net/http" |
| "strconv" |
| "strings" |
| "text/template" |
| |
| "golang.org/x/build/types" |
| ) |
| |
| // handleDoSomeWork adds the last committed CL as work to do. |
| // |
| // Only available in dev mode. |
| func handleDoSomeWork(work chan<- builderRev) func(w http.ResponseWriter, r *http.Request) { |
| return func(w http.ResponseWriter, r *http.Request) { |
| if r.Method == "GET" { |
| w.Header().Set("Content-Type", "text/html; charset=utf-8") |
| buf := new(bytes.Buffer) |
| if err := tmplDoSomeWork.Execute(buf, reversePool.HostTypes()); err != nil { |
| http.Error(w, fmt.Sprintf("dosomework: %v", err), http.StatusInternalServerError) |
| } |
| buf.WriteTo(w) |
| return |
| } |
| if r.Method != "POST" { |
| http.Error(w, "dosomework only takes GET and POST", http.StatusBadRequest) |
| return |
| } |
| |
| mode := strings.TrimPrefix(r.URL.Path, "/dosomework/") |
| |
| count, err := strconv.Atoi(r.FormValue("count")) |
| if err != nil { |
| count = 1 |
| } |
| |
| // Cap number of jobs that can be scheduled from debug UI. If |
| // buildEnv.MaxBuilds is zero, there is no cap. |
| if buildEnv.MaxBuilds > 0 && count > buildEnv.MaxBuilds { |
| count = buildEnv.MaxBuilds |
| } |
| log.Printf("looking for %v work items for %q", count, mode) |
| |
| w.Header().Set("Content-Type", "text/plain; charset=utf-8") |
| fmt.Fprintf(w, "looking for work for %s...\n", mode) |
| if f, ok := w.(http.Flusher); ok { |
| f.Flush() |
| } |
| revs, err := latestBuildableGoRev(count) |
| if err != nil { |
| fmt.Fprintf(w, "cannot find revision: %v", err) |
| return |
| } |
| fmt.Fprintf(w, "found work: %v\n", revs) |
| for _, rev := range revs { |
| work <- builderRev{name: mode, rev: rev} |
| } |
| } |
| } |
| |
| // latestBuildableGoRev returns the specified number of most recent buildable |
| // revisions. If there are not enough buildable revisions available to satisfy |
| // the specified amount, unbuildable revisions will be used to meet the |
| // specified count. |
| func latestBuildableGoRev(count int) ([]string, error) { |
| var bs types.BuildStatus |
| var revisions []string |
| res, err := http.Get("https://build.golang.org/?mode=json") |
| if err != nil { |
| return nil, err |
| } |
| defer res.Body.Close() |
| if err := json.NewDecoder(res.Body).Decode(&bs); err != nil { |
| return nil, err |
| } |
| if res.StatusCode != 200 { |
| return nil, fmt.Errorf("unexpected build.golang.org http status %v", res.Status) |
| } |
| // Find first count "ok" revisions |
| for _, br := range bs.Revisions { |
| if br.Repo == "go" { |
| for _, res := range br.Results { |
| if res == "ok" { |
| revisions = append(revisions, br.Revision) |
| break |
| } |
| } |
| } |
| if len(revisions) == count { |
| return revisions, nil |
| } |
| } |
| |
| // If there weren't enough "ok" revisions, add enough "not ok" |
| // revisions to satisfy count. |
| for _, br := range bs.Revisions { |
| if br.Repo == "go" { |
| revisions = append(revisions, br.Revision) |
| if len(revisions) == count { |
| return revisions, nil |
| } |
| } |
| } |
| return nil, errors.New("no revisions on build.golang.org") |
| } |
| |
| var tmplDoSomeWork = template.Must(template.New("").Parse(` |
| <html><head><title>do some work</title></head><body> |
| <h1>do some work</h1> |
| {{range .}} |
| <form action="/dosomework/{{.}}" method="POST"><button>{{.}}</button></form><br\> |
| {{end}} |
| <form action="/dosomework/linux-amd64-kube" method="POST"><input type="text" name="count" id="count" value="1"></input><button>linux-amd64-kube</button></form><br\> |
| </body></html> |
| `)) |
