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

milo/appengine/job_source/buildbot/build.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 (
         "encoding/json"
         "errors"
         "fmt"
@@ skipping 429 matching lines @@
         }
         if got_revision != "" {
                 ss.Revision = resp.NewLink(got_revision, "")
                 if repository != "" {
                         ss.Revision.URL = repository + "/+/" + got_revision
                 }
         }
         return ss
 }
 
-func getDebugBuild(c context.Context, builder string, buildNum int) (*buildbotBuild, error) {
-        fname := fmt.Sprintf("%s.%d.json", builder, buildNum)
-        // ../buildbot below assumes that
-        // - this code is not executed by tests outside of this dir
-        // - this dir is a sibling of frontend dir
-        path := filepath.Join("..", "buildbot", "testdata", fname)
-        raw, err := ioutil.ReadFile(path)
-        if err != nil {
-                return nil, err
-        }
-        b := &buildbotBuild{}
-        return b, json.Unmarshal(raw, b)
-}
-
-// build fetches a buildbot build and translates it into a miloBuild.
-func Build(c context.Context, master, builder string, buildNum int) (*resp.MiloBuild, error) {
-        var b *buildbotBuild
-        var err error
-        if master == "debug" {
-                b, err = getDebugBuild(c, builder, buildNum)
-        } else {
-                b, err = getBuild(c, master, builder, buildNum)
-        }
-        if err != nil {
-                return nil, err
-        }
-
+func renderBuild(c context.Context, b *buildbotBuild) *resp.MiloBuild {
         // Modify the build for rendering.
         updatePostProcessBuild(b)
 
         // TODO(hinoka): Do all fields concurrently.
         return &resp.MiloBuild{
                 SourceStamp:   sourcestamp(c, b),
                 Summary:       summary(c, b),
                 Components:    components(b),
                 PropertyGroup: properties(b),
                 Blame:         blame(b),
-        }, nil
+        }
+}
+
+// DebugBuild fetches a debugging build for testing.
+func DebugBuild(c context.Context, relBuildbotDir string, builder string, buildNum int) (*resp.MiloBuild, error) {
+        fname := fmt.Sprintf("%s.%d.json", builder, buildNum)
+        // ../buildbot below assumes that
+        // - this code is not executed by tests outside of this dir
+        // - this dir is a sibling of frontend dir
+        path := filepath.Join(relBuildbotDir, "testdata", fname)
+        raw, err := ioutil.ReadFile(path)
+        if err != nil {
+                return nil, err
+        }
+        b := &buildbotBuild{}
+        if err := json.Unmarshal(raw, b); err != nil {
+                return nil, err
+        }
+        return renderBuild(c, b), nil
+}
+
+// Build fetches a buildbot build and translates it into a miloBuild.
+func Build(c context.Context, master, builder string, buildNum int) (*resp.MiloBuild, error) {
+        b, err := getBuild(c, master, builder, buildNum)
+        if err != nil {
+                return nil, err
+        }
+        return renderBuild(c, b), nil
 }
 
 // updatePostProcessBuild transforms a build from its raw JSON format into the
 // format that should be presented to users.
 //
 // Post-processing includes:
 //      - If the build is LogDog-only, promotes aliases (LogDog links) to
 //        first-class links in the build.
 func updatePostProcessBuild(b *buildbotBuild) {
         // If this is a LogDog-only build, we want to promote the LogDog links.
@@ skipping 127 matching lines @@
         var newAliases map[string][]*buildbotLinkAlias
         if l := remainingAliases.Len(); l > 0 {
                 newAliases = make(map[string][]*buildbotLinkAlias, l)
                 remainingAliases.Iter(func(v string) bool {
                         newAliases[v] = s.Aliases[v]
                         return true
                 })
         }
         s.Aliases = newAliases
 }