LogDog: BigTable batching schema.

appengine/logdog/coordinator/config/bigTable.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 config
 
 import (
         gaeauthClient "github.com/luci/luci-go/appengine/gaeauth/client"
         "github.com/luci/luci-go/common/errors"
         log "github.com/luci/luci-go/common/logging"
@@ skipping 61 matching lines @@
         if err != nil {
                 log.WithError(err).Errorf(c, "Failed to create BigTable authenticator.")
                 return nil, errors.New("failed to create BigTable authenticator")
         }
 
         // Explicitly clear gRPC metadata from the Context. It is forwarded to
         // delegate calls by default, and standard request metadata can break BigTable
         // calls.
         c = metadata.NewContext(c, nil)
 
-        return bigtable.New(c, bigtable.Options{
+        st, err := bigtable.New(c, bigtable.Options{
                 Project:  bt.Project,
                 Zone:     bt.Zone,
                 Cluster:  bt.Cluster,
                 LogTable: bt.LogTableName,
                 ClientOptions: []cloud.ClientOption{
                         cloud.WithTokenSource(a.TokenSource()),
                 },
-        }), nil
+        })
+        if err != nil {
+                log.WithError(err).Errorf(c, "Failed to create BigTable instance.")
+                return nil, err
+        }
+        return st, nil
 }