Update Coordinator client, add datagram assembly.

milo/appengine/logdog/http.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 logdog
 
 import (
         "net/http"
         "strings"
 
         "github.com/julienschmidt/httprouter"
         "github.com/luci/luci-go/common/config"
         log "github.com/luci/luci-go/common/logging"
+        "github.com/luci/luci-go/grpc/prpc"
+        "github.com/luci/luci-go/logdog/client/coordinator"
         "github.com/luci/luci-go/logdog/common/types"
         "github.com/luci/luci-go/milo/appengine/settings"
         "github.com/luci/luci-go/milo/common/miloerror"
         "github.com/luci/luci-go/server/auth"
         "github.com/luci/luci-go/server/templates"
 
         "golang.org/x/net/context"
 )
 
 // AnnotationStream is a ThemedHandler that renders a LogDog Milo annotation
@@ skipping 22 matching lines @@
                         Code: http.StatusInternalServerError,
                 }
         }
 
         as := annotationStreamRequest{
                 AnnotationStream: s,
 
                 project: config.ProjectName(p.ByName("project")),
                 path:    types.StreamPath(strings.Trim(p.ByName("path"), "/")),
                 host:    req.FormValue("host"),
-
-                logDogClient: http.Client{
-                        Transport: t,
-                },
         }
         if err := as.normalize(); err != nil {
                 return nil, err
         }
 
+        // Setup our LogDog client.
+        as.logDogClient = coordinator.NewClient(&prpc.Client{

[martiniss, 2016/09/22 03:40:39]

why was this moved?

[dnj, 2016/09/22 16:00:05]

Previously, "logDogClient" was an http.Client. Now it's a coordinator.Client.
They are initialized differently.

+                C: &http.Client{
+                        Transport: t,
+                },
+                Host: as.host,
+        })
+
         // Load the Milo annotation protobuf from the annotation stream.
         if err := as.load(c); err != nil {
                 return nil, err
         }
 
         // Convert the Milo Annotation protobuf to Milo objects.
         return &templates.Args{
                 "Build": as.toMiloBuild(c),
         }, nil
 }