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// Copyright 2011 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"
"io"
"log"
"net/http"
"net/url"
"time"
)
type obj map[string]interface{}
// dash runs the given method and command on the dashboard.
// If args is non-nil it is encoded as the URL query string.
// If req is non-nil it is JSON-encoded and passed as the body of the HTTP POST.
// If resp is non-nil the server's response is decoded into the value pointed
// to by resp (resp must be a pointer).
func dash(meth, cmd string, args url.Values, req, resp interface{}) error {
var r *http.Response
var err error
if *verbose {
log.Println("dash", meth, cmd, args, req)
}
cmd = "http://" + *dashboard + "/" + cmd
if len(args) > 0 {
cmd += "?" + args.Encode()
}
switch meth {
case "GET":
if req != nil {
log.Panicf("%s to %s with req", meth, cmd)
}
r, err = http.Get(cmd)
case "POST":
var body io.Reader
if req != nil {
b, err := json.Marshal(req)
if err != nil {
return err
}
body = bytes.NewBuffer(b)
}
r, err = http.Post(cmd, "text/json", body)
default:
log.Panicf("%s: invalid method %q", cmd, meth)
panic("invalid method: " + meth)
}
if err != nil {
return err
}
defer r.Body.Close()
if r.StatusCode != http.StatusOK {
return fmt.Errorf("bad http response: %v", r.Status)
}
body := new(bytes.Buffer)
if _, err := body.ReadFrom(r.Body); err != nil {
return err
}
// Read JSON-encoded Response into provided resp
// and return an error if present.
var result = struct {
Response interface{}
Error string
}{
// Put the provided resp in here as it can be a pointer to
// some value we should unmarshal into.
Response: resp,
}
if err = json.Unmarshal(body.Bytes(), &result); err != nil {
log.Printf("json unmarshal %#q: %s\n", body.Bytes(), err)
return err
}
if result.Error != "" {
return errors.New(result.Error)
}
return nil
}
// todo returns the next hash to build.
func (b *Builder) todo(kind, pkg, goHash string) (rev string, err error) {
args := url.Values{
"kind": {kind},
"builder": {b.name},
"packagePath": {pkg},
"goHash": {goHash},
}
var resp *struct {
Kind string
Data struct {
Hash string
}
}
if err = dash("GET", "todo", args, nil, &resp); err != nil {
return "", err
}
if resp == nil {
return "", nil
}
if kind != resp.Kind {
return "", fmt.Errorf("expecting Kind %q, got %q", kind, resp.Kind)
}
return resp.Data.Hash, nil
}
// recordResult sends build results to the dashboard
func (b *Builder) recordResult(ok bool, pkg, hash, goHash, buildLog string, runTime time.Duration) error {
req := obj{
"Builder": b.name,
"PackagePath": pkg,
"Hash": hash,
"GoHash": goHash,
"OK": ok,
"Log": buildLog,
"RunTime": runTime,
}
args := url.Values{"key": {b.key}, "builder": {b.name}}
return dash("POST", "result", args, req, nil)
}
func postCommit(key, pkg string, l *HgLog) error {
t, err := time.Parse(time.RFC3339, l.Date)
if err != nil {
return fmt.Errorf("parsing %q: %v", l.Date, t)
}
return dash("POST", "commit", url.Values{"key": {key}}, obj{
"PackagePath": pkg,
"Hash": l.Hash,
"ParentHash": l.Parent,
"Time": t.Format(time.RFC3339),
"User": l.Author,
"Desc": l.Desc,
}, nil)
}
func dashboardCommit(pkg, hash string) bool {
err := dash("GET", "commit", url.Values{
"packagePath": {pkg},
"hash": {hash},
}, nil, nil)
return err == nil
}
func dashboardPackages(kind string) []string {
args := url.Values{"kind": []string{kind}}
var resp []struct {
Path string
}
if err := dash("GET", "packages", args, nil, &resp); err != nil {
log.Println("dashboardPackages:", err)
return nil
}
var pkgs []string
for _, r := range resp {
pkgs = append(pkgs, r.Path)
}
return pkgs
}
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