Add server/cache support to gaeconfig.

logdog/appengine/coordinator/project.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 (
         "strings"
 
         "github.com/luci/gae/service/info"
-        luciConfig "github.com/luci/luci-go/common/config"
-        log "github.com/luci/luci-go/common/logging"
+        commonConfig "github.com/luci/luci-go/common/config"
         "github.com/luci/luci-go/logdog/api/config/svcconfig"
-        "github.com/luci/luci-go/logdog/appengine/coordinator/config"
+
         "golang.org/x/net/context"
 )
 
 const (
         // projectNamespacePrefix is the datastore namespace prefix for project
         // namespaces.
         projectNamespacePrefix = "luci."
 )
 
 // ProjectNamespace returns the AppEngine namespace for a given luci-config
 // project name.
-func ProjectNamespace(project luciConfig.ProjectName) string {
+func ProjectNamespace(project commonConfig.ProjectName) string {
         return projectNamespacePrefix + string(project)
 }
 
 // ProjectFromNamespace returns the current project installed in the supplied
 // Context's namespace.
 //
 // If the namespace does not have a project namespace prefix, this function
 // will return an empty string.
-func ProjectFromNamespace(ns string) luciConfig.ProjectName {
+func ProjectFromNamespace(ns string) commonConfig.ProjectName {
         if !strings.HasPrefix(ns, projectNamespacePrefix) {
                 return ""
         }
-        return luciConfig.ProjectName(ns[len(projectNamespacePrefix):])
+        return commonConfig.ProjectName(ns[len(projectNamespacePrefix):])
 }
 
 // CurrentProject returns the current project based on the currently-loaded
 // namespace.
 //
 // If there is no current namespace, or if the current namespace is not a valid
 // project namespace, an empty string will be returned.
-func CurrentProject(c context.Context) luciConfig.ProjectName {
+func CurrentProject(c context.Context) commonConfig.ProjectName {
         if ns := info.GetNamespace(c); ns != "" {
                 return ProjectFromNamespace(ns)
         }
         return ""
 }
 
 // CurrentProjectConfig returns the project-specific configuration for the
 // current project.
 //
 // If there is no current project namespace, or if the current project has no
 // configuration, config.ErrInvalidConfig will be returned.
 func CurrentProjectConfig(c context.Context) (*svcconfig.ProjectConfig, error) {
         return GetServices(c).ProjectConfig(c, CurrentProject(c))
 }
-
-// ActiveUserProjects returns a full list of all config service projects with
-// LogDog project configurations that the current user has READ access to.
-//
-// TODO: Load project configs and all project configs lists from datastore. Add
-// a background cron job to periodically update these lists from luci-config.
-// This should be a generic config service capability.
-func ActiveUserProjects(c context.Context) (map[luciConfig.ProjectName]*svcconfig.ProjectConfig, error) {
-        allPcfgs, err := config.AllProjectConfigs(c)
-        if err != nil {
-                return nil, err
-        }
-
-        for project, pcfg := range allPcfgs {
-                // Verify user READ access.
-                if err := IsProjectReader(c, pcfg); err != nil {
-                        delete(allPcfgs, project)
-
-                        // If it is a membership error, prune this project and continue.
-                        // Otherwise, forward the error.
-                        if !IsMembershipError(err) {
-                                // No configuration for this project, the configuration is invalid, or
-                                // the user didn't have access. Remove it from the list.
-                                log.Fields{
-                                        log.ErrorKey: err,
-                                        "project":    project,
-                                }.Errorf(c, "Failed to check project.")
-                                return nil, err
-                        }
-                }
-        }
-        return allPcfgs, nil
-}