Milo: Add current builds to buildbot builder view

milo/appengine/buildbot/master.go

 // Copyright 2016 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package buildbot
 
 import (
         "bytes"
         "compress/gzip"
         "encoding/json"
         "fmt"
-        "net/http"
         "sort"
         "time"
 
         ds "github.com/luci/gae/service/datastore"
         "github.com/luci/luci-go/common/logging"
         "github.com/luci/luci-go/milo/api/resp"
         "github.com/luci/luci-go/milo/appengine/settings"
-        "github.com/luci/luci-go/milo/common/miloerror"
 
         "golang.org/x/net/context"
 )
 
 func decodeMasterEntry(
         c context.Context, entry *buildbotMasterEntry, master *buildbotMaster) error {
 
         reader, err := gzip.NewReader(bytes.NewReader(entry.Data))
         if err != nil {
                 return err
         }
         defer reader.Close()
         if err = json.NewDecoder(reader).Decode(master); err != nil {
                 return err
         }
         return nil
 }
 
-var errMasterNotFound = miloerror.Error{
-        Message: "Master not found",
-        Code:    http.StatusNotFound,
-}
-
 // getMasterEntry feches the named master and does an ACL check on the
 // current user.
 func getMasterEntry(c context.Context, name string) (*buildbotMasterEntry, error) {
         entry := buildbotMasterEntry{Name: name}
         err := ds.Get(c, &entry)
         switch {
         case err == ds.ErrNoSuchEntity:
                 return nil, errMasterNotFound
         case err != nil:
                 logging.WithError(err).Errorf(
@@ skipping 76 matching lines @@
                                 Label: bn,
                                 // Go templates escapes this for us, and also
                                 // slashes are not allowed in builder names.
                                 URL: fmt.Sprintf("/buildbot/%s/%s", entry.Name, bn),
                         })
                 }
                 result.Masters = append(result.Masters, ml)
         }
         return result, nil
 }