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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_EXTENSIONS_API_STORAGE_POLICY_VALUE_STORE_H_
#define CHROME_BROWSER_EXTENSIONS_API_STORAGE_POLICY_VALUE_STORE_H_
#include <stddef.h>
#include <memory>
#include <string>
#include <vector>
#include "components/value_store/value_store.h"
#include "extensions/browser/api/storage/settings_observer.h"
#include "extensions/common/extension_id.h"
namespace policy {
class PolicyMap;
}
namespace extensions {
// A ValueStore that is backed by another, persistent ValueStore, and stores
// the policies for a specific extension there. This ValueStore is used to
// run the function of the storage.managed namespace; it's read-only for the
// extension. The ManagedValueStoreCache sends updated policy to this store
// and manages its lifetime.
class PolicyValueStore : public value_store::ValueStore {
public:
PolicyValueStore(const ExtensionId& extension_id,
SequenceBoundSettingsChangedCallback observer,
std::unique_ptr<value_store::ValueStore> delegate);
PolicyValueStore(const PolicyValueStore&) = delete;
PolicyValueStore& operator=(const PolicyValueStore&) = delete;
~PolicyValueStore() override;
// Stores `policy` in the persistent database represented by the `delegate_`
// and notifies observers with the changes from the previous policy.
void SetCurrentPolicy(const policy::PolicyMap& policy);
// Clears all the stored data and deletes the database.
void DeleteStorage();
// ValueStore implementation:
size_t GetBytesInUse(const std::string& key) override;
size_t GetBytesInUse(const std::vector<std::string>& keys) override;
size_t GetBytesInUse() override;
ReadResult GetKeys() override;
ReadResult Get(const std::string& key) override;
ReadResult Get(const std::vector<std::string>& keys) override;
ReadResult Get() override;
WriteResult Set(WriteOptions options,
const std::string& key,
const base::Value& value) override;
WriteResult Set(WriteOptions options,
const base::Value::Dict& values) override;
WriteResult Remove(const std::string& key) override;
WriteResult Remove(const std::vector<std::string>& keys) override;
WriteResult Clear() override;
// For unit tests.
value_store::ValueStore* delegate() { return delegate_.get(); }
private:
ExtensionId extension_id_;
SequenceBoundSettingsChangedCallback observer_;
std::unique_ptr<value_store::ValueStore> delegate_;
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_API_STORAGE_POLICY_VALUE_STORE_H_
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