components/policy/core/common/cloud/cloud_policy_manager.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_POLICY_CORE_COMMON_CLOUD_CLOUD_POLICY_MANAGER_H_
   6 #define COMPONENTS_POLICY_CORE_COMMON_CLOUD_CLOUD_POLICY_MANAGER_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/prefs/pref_member.h"
  15 #include "components/policy/core/common/cloud/cloud_policy_constants.h"
  16 #include "components/policy/core/common/cloud/cloud_policy_core.h"
  17 #include "components/policy/core/common/cloud/cloud_policy_store.h"
  18 #include "components/policy/core/common/cloud/component_cloud_policy_service.h"
  19 #include "components/policy/core/common/configuration_policy_provider.h"
  20 #include "components/policy/policy_export.h"
  21
  22 namespace base {
  23 class FilePath;
  24 class SequencedTaskRunner;
  25 }
  26
  27 namespace net {
  28 class URLRequestContextGetter;
  29 }
  30
  31 namespace policy {
  32
  33 class PolicyMap;
  34
  35 // CloudPolicyManager is the main switching central between cloud policy and the
  36 // upper layers of the policy stack. It wires up a CloudPolicyCore to the
  37 // ConfigurationPolicyProvider interface.
  38 //
  39 // This class contains the base functionality, there are subclasses that add
  40 // functionality specific to user-level and device-level cloud policy, such as
  41 // blocking on initial user policy fetch or device enrollment.
  42 class POLICY_EXPORT CloudPolicyManager
  43     : public ConfigurationPolicyProvider,
  44       public CloudPolicyStore::Observer,
  45       public ComponentCloudPolicyService::Delegate {
  46  public:
  47   // |task_runner| is the runner for policy refresh tasks.
  48   // |file_task_runner| is used for file operations. Currently this must be the
  49   // FILE BrowserThread.
  50   // |io_task_runner| is used for network IO. Currently this must be the IO
  51   // BrowserThread.
  52   CloudPolicyManager(
  53       const PolicyNamespaceKey& policy_ns_key,
  54       CloudPolicyStore* cloud_policy_store,
  55       const scoped_refptr<base::SequencedTaskRunner>& task_runner,
  56       const scoped_refptr<base::SequencedTaskRunner>& file_task_runner,
  57       const scoped_refptr<base::SequencedTaskRunner>& io_task_runner);
  58   virtual ~CloudPolicyManager();
  59
  60   CloudPolicyCore* core() { return &core_; }
  61   const CloudPolicyCore* core() const { return &core_; }
  62
  63   // ConfigurationPolicyProvider:
  64   virtual void Shutdown() OVERRIDE;
  65   virtual bool IsInitializationComplete(PolicyDomain domain) const OVERRIDE;
  66   virtual void RefreshPolicies() OVERRIDE;
  67
  68   // CloudPolicyStore::Observer:
  69   virtual void OnStoreLoaded(CloudPolicyStore* cloud_policy_store) OVERRIDE;
  70   virtual void OnStoreError(CloudPolicyStore* cloud_policy_store) OVERRIDE;
  71
  72   // ComponentCloudPolicyService::Delegate:
  73   virtual void OnComponentCloudPolicyUpdated() OVERRIDE;
  74
  75  protected:
  76   // Check whether fully initialized and if so, publish policy by calling
  77   // ConfigurationPolicyStore::UpdatePolicy().
  78   void CheckAndPublishPolicy();
  79
  80   // Writes Chrome policy into |policy_map|. This is intended to be overridden
  81   // by subclasses that want to post-process policy before publishing it. The
  82   // default implementation just copies over |store()->policy_map()|.
  83   virtual void GetChromePolicy(PolicyMap* policy_map);
  84
  85   void CreateComponentCloudPolicyService(
  86       const base::FilePath& policy_cache_path,
  87       const scoped_refptr<net::URLRequestContextGetter>& request_context);
  88
  89   void ClearAndDestroyComponentCloudPolicyService();
  90
  91   // Convenience accessors to core() components.
  92   CloudPolicyClient* client() { return core_.client(); }
  93   const CloudPolicyClient* client() const { return core_.client(); }
  94   CloudPolicyStore* store() { return core_.store(); }
  95   const CloudPolicyStore* store() const { return core_.store(); }
  96   CloudPolicyService* service() { return core_.service(); }
  97   const CloudPolicyService* service() const { return core_.service(); }
  98   ComponentCloudPolicyService* component_policy_service() const {
  99     return component_policy_service_.get();
 100   }
 101
 102  private:
 103   // Completion handler for policy refresh operations.
 104   void OnRefreshComplete(bool success);
 105
 106   CloudPolicyCore core_;
 107   scoped_ptr<ComponentCloudPolicyService> component_policy_service_;
 108
 109   // Whether there's a policy refresh operation pending, in which case all
 110   // policy update notifications are deferred until after it completes.
 111   bool waiting_for_policy_refresh_;
 112
 113   scoped_refptr<base::SequencedTaskRunner> file_task_runner_;
 114   scoped_refptr<base::SequencedTaskRunner> io_task_runner_;
 115
 116   DISALLOW_COPY_AND_ASSIGN(CloudPolicyManager);
 117 };
 118
 119 }  // namespace policy
 120
 121 #endif  // COMPONENTS_POLICY_CORE_COMMON_CLOUD_CLOUD_POLICY_MANAGER_H_