components/policy/core/common/schema_map.h

   1 // Copyright 2013 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_SCHEMA_MAP_H_
   6 #define COMPONENTS_POLICY_CORE_COMMON_SCHEMA_MAP_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/basictypes.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "components/policy/core/common/policy_namespace.h"
  14 #include "components/policy/core/common/schema.h"
  15 #include "components/policy/policy_export.h"
  16
  17 namespace policy {
  18
  19 class PolicyBundle;
  20
  21 typedef std::map<std::string, Schema> ComponentMap;
  22 typedef std::map<PolicyDomain, ComponentMap> DomainMap;
  23
  24 // Contains a mapping of policy namespaces (domain + component ID) to its
  25 // corresponding Schema.
  26 class POLICY_EXPORT SchemaMap : public base::RefCountedThreadSafe<SchemaMap> {
  27  public:
  28   SchemaMap();
  29   // Takes ownership of |map| (its contents will be swapped).
  30   explicit SchemaMap(DomainMap& map);
  31
  32   const DomainMap& GetDomains() const;
  33
  34   const ComponentMap* GetComponents(PolicyDomain domain) const;
  35
  36   const Schema* GetSchema(const PolicyNamespace& ns) const;
  37
  38   // Removes all the policies in |bundle| that don't match the known schemas.
  39   // Unknown components are also dropped.
  40   void FilterBundle(PolicyBundle* bundle) const;
  41
  42   // Returns true if this map contains at least one component of a domain other
  43   // than POLICY_DOMAIN_CHROME.
  44   bool HasComponents() const;
  45
  46   void GetChanges(const scoped_refptr<SchemaMap>& older,
  47                   PolicyNamespaceList* removed,
  48                   PolicyNamespaceList* added) const;
  49
  50  private:
  51   friend class base::RefCountedThreadSafe<SchemaMap>;
  52
  53   void GetNamespacesNotInOther(const SchemaMap* other,
  54                                PolicyNamespaceList* list) const;
  55
  56   ~SchemaMap();
  57
  58   DomainMap map_;
  59
  60   DISALLOW_COPY_AND_ASSIGN(SchemaMap);
  61 };
  62
  63 }  // namespace policy
  64
  65 #endif  // COMPONENTS_POLICY_CORE_COMMON_SCHEMA_MAP_H_