LogDog: Implement RegisterPrefix RPC.

appengine/logdog/coordinator/logPrefix.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package coordinator
 
 import (
         "errors"
         "fmt"
         "time"
@@ skipping 14 matching lines @@
         // stream's Prefix field.
         ID HashID `gae:"$id"`
 
         // Schema is the datastore schema version for this object. This can be used
         // to facilitate schema migrations.
         //
         // The current schema is currentSchemaVersion.
         Schema string
 
         // Created is the time when this stream was created.
-        Created time.Time
+        Created time.Time `gae:",noindex"`
 
         // Prefix is this log stream's prefix value. Log streams with the same prefix
         // are logically grouped.
         //
         // This value should not be changed once populated, as it will invalidate the
         // HashID.
-        Prefix string
+        Prefix string `gae:",noindex"`
+
+        // Source is the (indexed) set of source strings sent by the prefix registrar.
+        Source []string
 
         // Secret is the Butler secret value for this prefix. All streams within
         // the prefix share this secret value.
         //
         // This value may only be returned to LogDog services; it is not user-visible.
         Secret []byte `gae:",noindex"`
 
         // extra causes datastore to ignore unrecognized fields and strip them in
         // future writes.
         extra ds.PropertyMap `gae:"-,extra"`
@@ skipping 67 matching lines @@
                 return fmt.Errorf("invalid prefix: %s", err)
         }
         if err := types.PrefixSecret(p.Secret).Validate(); err != nil {
                 return fmt.Errorf("invalid prefix secret: %s", err)
         }
         if p.Created.IsZero() {
                 return errors.New("created time is not set")
         }
         return nil
 }