[milo] {buildbucket,buildbot,swarming,logdog} -> backends/*.

milo/appengine/buildbucket/buckets.go

Index: milo/appengine/buildbucket/buckets.go
diff --git a/milo/appengine/buildbucket/buckets.go b/milo/appengine/buildbucket/buckets.go
deleted file mode 100644
index 0243b6170f2a7def91d4a8cc2f99c6fcfa9af1ed..0000000000000000000000000000000000000000
--- a/milo/appengine/buildbucket/buckets.go
+++ /dev/null
@@ -1,49 +0,0 @@
-// 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.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.NewLink(
-				builder.Name, fmt.Sprintf("/buildbucket/%s/%s", bucket.Name, builder.Name))
-		}
-		result.BuilderGroups[i] = group
-	}
-
-	return result, nil
-}