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// Copyright (c) 2012 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 CONTENT_BROWSER_STORAGE_PARTITION_IMPL_MAP_H_
#define CONTENT_BROWSER_STORAGE_PARTITION_IMPL_MAP_H_
#include <map>
#include <memory>
#include <string>
#include <unordered_set>
#include "base/callback_forward.h"
#include "base/gtest_prod_util.h"
#include "base/macros.h"
#include "base/supports_user_data.h"
#include "content/browser/storage_partition_impl.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/storage_partition_config.h"
namespace base {
class FilePath;
class SequencedTaskRunner;
} // namespace base
namespace content {
class BrowserContext;
// A std::string to StoragePartition map for use with SupportsUserData APIs.
class CONTENT_EXPORT StoragePartitionImplMap
: public base::SupportsUserData::Data {
public:
explicit StoragePartitionImplMap(BrowserContext* browser_context);
~StoragePartitionImplMap() override;
// This map retains ownership of the returned StoragePartition objects.
StoragePartitionImpl* Get(const StoragePartitionConfig& partition_config,
bool can_create);
// Starts an asynchronous best-effort attempt to delete all on-disk storage
// related to |partition_domain|, avoiding any directories that are known to
// be in use.
//
// |on_gc_required| is called if the AsyncObliterate() call was unable to
// fully clean the on-disk storage requiring a call to GarbageCollect() on
// the next browser start.
void AsyncObliterate(const std::string& partition_domain,
base::OnceClosure on_gc_required);
// Examines the on-disk storage and removes any entires that are not listed
// in the |active_paths|, or in use by current entries in the storage
// partition.
//
// The |done| closure is executed on the calling thread when garbage
// collection is complete.
void GarbageCollect(
std::unique_ptr<std::unordered_set<base::FilePath>> active_paths,
base::OnceClosure done);
void ForEach(BrowserContext::StoragePartitionCallback callback);
size_t size() const { return partitions_.size(); }
private:
FRIEND_TEST_ALL_PREFIXES(StoragePartitionConfigTest, OperatorLess);
FRIEND_TEST_ALL_PREFIXES(StoragePartitionImplMapTest, GarbageCollect);
typedef std::map<StoragePartitionConfig,
std::unique_ptr<StoragePartitionImpl>>
PartitionMap;
// Returns the relative path from the profile's base directory, to the
// directory that holds all the state for storage contexts in the given
// |partition_domain| and |partition_name|.
static base::FilePath GetStoragePartitionPath(
const std::string& partition_domain,
const std::string& partition_name);
// This must always be called *after* |partition| has been added to the
// partitions_.
//
// TODO(ajwong): Is there a way to make it so that Get()'s implementation
// doesn't need to be aware of this ordering? Revisit when refactoring
// ResourceContext and AppCache to respect storage partitions.
void PostCreateInitialization(StoragePartitionImpl* partition,
bool in_memory);
BrowserContext* browser_context_; // Not Owned.
scoped_refptr<base::SequencedTaskRunner> file_access_runner_;
PartitionMap partitions_;
// Set to true when the ResourceContext for the associated |browser_context_|
// is initialized. Can never return to false.
bool resource_context_initialized_;
DISALLOW_COPY_AND_ASSIGN(StoragePartitionImplMap);
};
} // namespace content
#endif // CONTENT_BROWSER_STORAGE_PARTITION_IMPL_MAP_H_
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