Policy providers all get a SchemaRegistry to work with.

chrome/browser/policy/cloud/component_cloud_policy_service.h

 // Copyright (c) 2013 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.
 
 #ifndef CHROME_BROWSER_POLICY_CLOUD_COMPONENT_CLOUD_POLICY_SERVICE_H_
 #define CHROME_BROWSER_POLICY_CLOUD_COMPONENT_CLOUD_POLICY_SERVICE_H_
 
-#include <map>
 #include <set>
-#include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "chrome/browser/policy/cloud/cloud_policy_client.h"
+#include "chrome/browser/policy/cloud/cloud_policy_constants.h"
 #include "chrome/browser/policy/cloud/cloud_policy_store.h"
 #include "chrome/browser/policy/policy_bundle.h"
 #include "components/policy/core/common/policy_namespace.h"
 
 namespace base {
 class SequencedTaskRunner;
 }
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 namespace policy {
 
 class ExternalPolicyDataFetcherBackend;
-class PolicyDomainDescriptor;
 class ResourceCache;
+class SchemaMap;
 
 // Manages cloud policy for components.
 //
 // This class takes care of fetching, validating, storing and updating policy
 // for components. The components to manage have to be explicitly registered.
 class ComponentCloudPolicyService : public CloudPolicyClient::Observer,
                                     public CloudPolicyStore::Observer,
                                     public base::NonThreadSafe {
  public:
   // Key for the ResourceCache where the list of known components is cached.
@@ skipping 40 matching lines @@
   // this object. Only cached policies will be served until a |client| is
   // connected.
   // |request_context| is used with the URLFetchers triggered by the updater.
   void Connect(CloudPolicyClient* client,
                scoped_refptr<net::URLRequestContextGetter> request_context);
 
   // Disconnects from the cloud policy service and stops trying to download
   // remote policy data.
   void Disconnect();
 
-  // |descriptor| lists the complete set of components to track for its domain.
+  // |schema_map| contains the schemas for all the components that this
+  // service should load policy for.
   // This purges unused components from the cache, and starts updating the
-  // components listed in the descriptor. It's only valid to call this for
-  // domains that are supported, i.e. SupportsDomain(domain) is true.
-  void RegisterPolicyDomain(
-      scoped_refptr<const PolicyDomainDescriptor> descriptor);
+  // components listed in the map.
+  // Unsupported domains in the map are ignored.
+  void OnSchemasUpdated(const scoped_refptr<SchemaMap>& schema_map);
 
   // CloudPolicyClient::Observer implementation:
   virtual void OnPolicyFetched(CloudPolicyClient* client) OVERRIDE;
   virtual void OnRegistrationStateChanged(CloudPolicyClient* client) OVERRIDE;
   virtual void OnClientError(CloudPolicyClient* client) OVERRIDE;
 
   // CloudPolicyStore::Observer implementation:
   virtual void OnStoreLoaded(CloudPolicyStore* store) OVERRIDE;
   virtual void OnStoreError(CloudPolicyStore* store) OVERRIDE;
 
  private:
   class Backend;
-  typedef std::set<std::string> StringSet;
-  typedef std::map<PolicyDomain, StringSet> ComponentMap;
+  typedef std::set<PolicyNamespaceKey> PolicyNamespaceKeys;
 
   void InitializeBackend();
-  void OnBackendInitialized(scoped_ptr<ComponentMap> components,
+  void OnBackendInitialized(scoped_ptr<PolicyNamespaceKeys> initial_keys,
                             scoped_ptr<PolicyBundle> initial_policy);
   void InitializeClient();
   void OnPolicyUpdated(scoped_ptr<PolicyBundle> policy);
 
   void SetCredentialsAndReloadClient();
-  bool UpdateClientNamespaces(PolicyDomain domain,
-                              const StringSet& old_set,
-                              const StringSet& new_set);
-  void AddNamespacesToFetch(PolicyDomain domain, const StringSet& set);
-  void RemoveNamespacesToFetch(PolicyDomain domain, const StringSet& set);
+  bool UpdateClientNamespaces(const PolicyNamespaceKeys& old_keys,
+                              const PolicyNamespaceKeys& new_keys);
+  void AddNamespacesToFetch(const PolicyNamespaceKeys& keys);
+  void RemoveNamespacesToFetch(const PolicyNamespaceKeys& keys);
 
   Delegate* delegate_;
 
   scoped_refptr<base::SequencedTaskRunner> backend_task_runner_;
   scoped_refptr<base::SequencedTaskRunner> io_task_runner_;
 
   // The |external_policy_data_fetcher_backend_| handles network I/O for the
   // |backend_| because URLRequestContextGetter and URLFetchers cannot be
   // referenced from background threads. It is instantiated on the thread |this|
   // runs on but after that, must only be accessed and eventually destroyed via
   // the |io_task_runner_|.
   scoped_ptr<ExternalPolicyDataFetcherBackend>
       external_policy_data_fetcher_backend_;
 
   // The |backend_| handles all download scheduling, validation and caching of
   // policies. It is instantiated on the thread |this| runs on but after that,
   // must only be accessed and eventually destroyed via the
   // |backend_task_runner_|.
   scoped_ptr<Backend> backend_;
 
   CloudPolicyClient* client_;
   CloudPolicyStore* store_;
 
-  // The currently registered components for each policy domain. If a policy
-  // domain doesn't have an entry in this map then it hasn't registered its
-  // component yet. A domain in this map with an empty set of components means
-  // that the domain is registered, but has no components.
-  ComponentMap registered_components_;
+  // The currently registered components for each policy domain.
+  PolicyNamespaceKeys keys_;
 
   // Contains all the current policies for components.
   PolicyBundle policy_;
 
   bool is_initialized_;
+  bool has_initial_keys_;
   base::WeakPtrFactory<ComponentCloudPolicyService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ComponentCloudPolicyService);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_CLOUD_COMPONENT_CLOUD_POLICY_SERVICE_H_