Split up chrome/browser/policy subdirectory

chrome/browser/policy/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_COMPONENT_CLOUD_POLICY_SERVICE_H_
-#define CHROME_BROWSER_POLICY_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 "chrome/browser/policy/cloud_policy_client.h"
-#include "chrome/browser/policy/cloud_policy_store.h"
-#include "chrome/browser/policy/policy_bundle.h"
-#include "chrome/browser/policy/policy_service.h"
-
-namespace base {
-class SequencedTaskRunner;
-}
-
-namespace net {
-class URLRequestContextGetter;
-}
-
-namespace policy {
-
-class ResourceCache;
-
-// 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:
-  // Key for the ResourceCache where the list of known components is cached.
-  static const char kComponentNamespaceCache[];
-
-  class Delegate {
-   public:
-    virtual ~Delegate();
-
-    // Invoked whenever the service has appended new namespaces to fetch to
-    // the CloudPolicyClient, signaling that a policy fetch should be done soon.
-    virtual void OnComponentCloudPolicyRefreshNeeded() = 0;
-
-    // Invoked whenever the policy served by policy() changes. This is also
-    // invoked for the first time once the backend is initialized, and
-    // is_initialized() becomes true.
-    virtual void OnComponentCloudPolicyUpdated() = 0;
-  };
-
-  // |store| is used to get the current DMToken and the username.
-  // |cache| is used to load and store local copies of the downloaded policies.
-  ComponentCloudPolicyService(Delegate* delegate,
-                              CloudPolicyStore* store,
-                              scoped_ptr<ResourceCache> cache);
-  virtual ~ComponentCloudPolicyService();
-
-  // Returns true if |domain| is supported by the service.
-  static bool SupportsDomain(PolicyDomain domain);
-
-  // Returns true if the backend is initialized, and the initial policies and
-  // components are being served.
-  bool is_initialized() const { return is_initialized_; }
-
-  // Returns the current policies for components.
-  const PolicyBundle& policy() const { return policy_; }
-
-  // Connects to the cloud policy service using |client|. |client| must outlive
-  // 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();
-
-  // |component_ids| is the complete set of components to track for the given
-  // |domain|. This purges unused components from the cache, and starts
-  // updating the components in |component_ids|.
-  // It's only valid to call this for domains that are supported, i.e.
-  // SupportsDomain(domain) is true.
-  void RegisterPolicyDomain(PolicyDomain domain,
-                            const std::set<std::string>& component_ids);
-
-  // 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;
-
-  void InitializeBackend();
-  void OnBackendInitialized(scoped_ptr<ComponentMap> components,
-                            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);
-
-  Delegate* delegate_;
-
-  // This class manages others that live on a background thread; those are
-  // managed by |backend_|. |backend_| lives in the thread that backs
-  // |backend_task_runner_|, but is owned by |this|. It is created on UI, but
-  // from then on it only receives calls on the background thread, including
-  // destruction. So it's always safe to post tasks to |backend_|, since its
-  // deletion is posted after the deletion of |this|.
-  Backend* backend_;
-  scoped_refptr<base::SequencedTaskRunner> backend_task_runner_;
-
-  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_;
-
-  // Contains all the current policies for components.
-  PolicyBundle policy_;
-
-  bool is_initialized_;
-  base::WeakPtrFactory<ComponentCloudPolicyService> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ComponentCloudPolicyService);
-};
-
-}  // namespace policy
-
-#endif  // CHROME_BROWSER_POLICY_COMPONENT_CLOUD_POLICY_SERVICE_H_