builder: send commit time to dashboard

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5489084

misc/dashboard/builder/http.go

@@ -8,10 +8,12 @@ import (
 	"bytes"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io"
 	"log"
 	"net/http"
 	"net/url"
+	"time"
 )
 
 type obj map[string]interface{}
@@ -147,20 +149,19 @@ func (b *Builder) updatePackage(pkg string, ok bool, buildLog, info string) erro
 	*/
 }
 
-func postCommit(key, pkg string, l *HgLog) bool {
-	err := dash("POST", "commit", url.Values{"key": {key}}, obj{
+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,
-		// TODO(adg): l.Date as int64 unix epoch secs in Time field
+		"Time":        t.Unix() * 1e6, // in microseconds, yuck!
 		"User":        l.Author,
 		"Desc":        l.Desc,
 	}, nil)
-	if err != nil {
-		log.Printf("failed to add %s to dashboard: %v", key, err)
-		return false
-	}
-	return true
 }
 
 func dashboardCommit(pkg, hash string) bool {

misc/dashboard/builder/main.go

@@ -536,7 +536,7 @@ const xmlLogTemplate = `
 	<hash>{node|escape}</hash>
 	<parent>{parent|escape}</parent>
 	<author>{author|escape}</author>
-	<date>{date}</date>
+	<date>{date|rfc3339date}</date>
 	<desc>{desc|escape}</desc>
 	</log>
 `
@@ -652,7 +652,11 @@ func addCommit(pkg, hash, key string) bool {
 	}
 
 	// Create commit.
-	return postCommit(key, pkg, l)
+	if err := postCommit(key, pkg, l); err != nil {
+		log.Printf("failed to add %s to dashboard: %v", key, err)
+		return false
+	}
+	return true
 }
 
 // fullHash returns the full hash for the given Mercurial revision.