[milo] Add BuildSummary and common models.

milo/appengine/buildbucket/buckets.go

 // Copyright 2017 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 buildbucket
 
 import (
         "errors"
         "fmt"
 
         "golang.org/x/net/context"
 
         "github.com/luci/luci-go/milo/api/resp"
         "github.com/luci/luci-go/milo/appengine/common"
 )
 
 func GetAllBuilders(c context.Context) (*resp.CIService, error) {
         settings := common.GetSettings(c)
         bucketSettings := settings.Buildbucket
         if bucketSettings == nil {
                 return nil, errors.New("buildbucket settings missing in config")
         }
         result := &resp.CIService{
                 Name: "Swarmbucket",
-                Host: &resp.Link{
-                        Label: bucketSettings.Name,
-                        URL:   "https://" + bucketSettings.Host,
-                },
+                Host: resp.NewLink(bucketSettings.Name, "https://"+bucketSettings.Host),
         }
         client, err := newSwarmbucketClient(c, bucketSettings.Host)
         if err != nil {
                 return nil, err
         }
         // TODO(hinoka): Retries for transient errors
         r, err := client.GetBuilders().Do()
         if err != nil {
                 return nil, err
         }
 
         result.BuilderGroups = make([]resp.BuilderGroup, len(r.Buckets))
         for i, bucket := range r.Buckets {
                 group := resp.BuilderGroup{Name: bucket.Name}
                 group.Builders = make([]resp.Link, len(bucket.Builders))
                 for j, builder := range bucket.Builders {
-                        group.Builders[j] = resp.Link{
-                                Label: builder.Name,
-                                URL:   fmt.Sprintf("/buildbucket/%s/%s", bucket.Name, builder.Name),
-                        }
+                        group.Builders[j] = *resp.NewLink(
+                                builder.Name, fmt.Sprintf("/buildbucket/%s/%s", bucket.Name, builder.Name))
                 }
                 result.BuilderGroups[i] = group
         }
 
         return result, nil
 }