Milo: pRPC endpoint for getting Buildbot master data

milo/appengine/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"
         "fmt"
         "io/ioutil"
@@ skipping 104 matching lines @@
 // getBanner fetches the banner information about the bot that the build
 // ran on.  This is best effort and:
 // * Will return an empty list of banners if the master is not found.
 // * May return incorrect data if the platform of the slave of the same name
 //   was changed recently, and this build was older than before the slave
 //   changed platforms.
 func getBanner(c context.Context, b *buildbotBuild, m *buildbotMaster) *resp.LogoBanner {
         logos := &resp.LogoBanner{}
         // Fetch the master info from datastore if not provided.
         if m == nil {
-                m1, _, _, err := getMasterJSON(c, b.Master)
+                m1, _, err := getMasterJSON(c, b.Master)
                 m = m1
                 if err != nil {
                         logging.Warningf(c, "Failed to fetch master information for banners on master %s", b.Master)
                         return nil
                 }
         }
 
         s, ok := m.Slaves[b.Slave]
         if !ok {
                 logging.Warningf(c, "Could not find slave %s in master %s", b.Slave, b.Master)
@@ skipping 340 matching lines @@
 
         // 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
 }