Add server/cache support to gaeconfig.

logdog/server/archivist/storageSource.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 archivist
 
 import (
         "io"
 
         log "github.com/luci/luci-go/common/logging"
         "github.com/luci/luci-go/logdog/api/logpb"
         "github.com/luci/luci-go/logdog/common/storage"
         "github.com/luci/luci-go/logdog/common/types"
         "github.com/luci/luci-go/luci_config/common/cfgtypes"
+
         "golang.org/x/net/context"
 )
 
 // storageSource is a renderer.Source that pulls log entries from intermediate
 // storage via its storage.Storage instance.
 type storageSource struct {
         context.Context
 
         st            storage.Storage      // the storage instance to read from
         project       cfgtypes.ProjectName // the path of the log stream
@@ skipping 71 matching lines @@
                         "index":         sidx,
                         "terminalIndex": s.terminalIndex,
                 }.Warningf(s, "Discarding log entries beyond expected terminal index.")
                 return nil, io.EOF
         }
 
         s.lastIndex = sidx
         s.logEntryCount++
         return le, nil
 }