LogDog: Add Storage-layer data caching.

logdog/common/storage/bigtable/initialize.go

 // Copyright 2015 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 bigtable
 
 import (
         "fmt"
         "time"
 
@@ skipping 53 matching lines @@
 // If, however, the table or table's schema doesn't exist, Initialize will
 // create and configure it.
 //
 // If nil is returned, the table is ready for use as a Storage via New.
 func Initialize(ctx context.Context, o Options) error {
         adminClient, err := o.adminClient(ctx)
         if err != nil {
                 return err
         }
 
-        st := newBTStorage(ctx, o, nil, adminClient)
+        st := newBTStorage(ctx, o, nil, adminClient, nil)
         defer st.Close()
 
         exists, err := tableExists(ctx, st.adminClient, o.LogTable)
         if err != nil {
                 return fmt.Errorf("failed to test for table: %s", err)
         }
         if !exists {
                 log.Fields{
                         "table": o.LogTable,
                 }.Infof(ctx, "Storage table does not exist. Creating...")
@@ skipping 41 matching lines @@
         cfg := storage.Config{
                 MaxLogAge: DefaultMaxLogAge,
         }
         if err := st.Config(cfg); err != nil {
                 log.WithError(err).Errorf(ctx, "Failed to push default configuration.")
                 return err
         }
 
         return nil
 }