Add server/cache support to gaeconfig.

logdog/appengine/coordinator/context.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 coordinator
 
 import (
         "fmt"
 
         "github.com/luci/gae/service/info"
-        luciConfig "github.com/luci/luci-go/common/config"
         log "github.com/luci/luci-go/common/logging"
         "github.com/luci/luci-go/grpc/grpcutil"
         "github.com/luci/luci-go/logdog/api/config/svcconfig"
         "github.com/luci/luci-go/logdog/appengine/coordinator/config"
         "github.com/luci/luci-go/luci_config/common/cfgtypes"
+        "github.com/luci/luci-go/luci_config/server/cfgclient"
         "github.com/luci/luci-go/server/auth"
         "github.com/luci/luci-go/server/auth/identity"
 
         "golang.org/x/net/context"
         "google.golang.org/grpc/codes"
 )
 
 // NamespaceAccessType specifies the type of namespace access that is being
 // requested for WithProjectNamespace.
 type NamespaceAccessType int
@@ skipping 72 matching lines @@
 
         // Returns the project config, or "read denied" error if the project does not
         // exist.
         getProjectConfig := func() (*svcconfig.ProjectConfig, error) {
                 pcfg, err := GetServices(ctx).ProjectConfig(ctx, project)
                 switch err {
                 case nil:
                         // Successfully loaded project config.
                         return pcfg, nil
 
-                case luciConfig.ErrNoConfig, config.ErrInvalidConfig:
+                case cfgclient.ErrNoConfig, config.ErrInvalidConfig:
                         // If the configuration request was valid, but no configuration could be
                         // loaded, treat this as the user not having READ access to the project.
                         // Otherwise, the user could use this error response to confirm a
                         // project's existence.
                         log.Fields{
                                 log.ErrorKey: err,
                                 "project":    project,
                         }.Errorf(ctx, "Could not load config for project.")
                         return nil, getAccessDeniedError()
 
@@ skipping 70 matching lines @@
 // namespace conforming to ProjectNamespace. If this is not the case, this
 // method will panic.
 func Project(c context.Context) cfgtypes.ProjectName {
         ns := info.GetNamespace(c)
         project := ProjectFromNamespace(ns)
         if project != "" {
                 return project
         }
         panic(fmt.Errorf("current namespace %q does not begin with project namespace prefix (%q)", ns, projectNamespacePrefix))
 }