[CacheStorage] Give ownership of all CacheStorageCaches to CacheStorage

content/browser/cache_storage/cache_storage_cache.h

 // Copyright 2014 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_CACHE_STORAGE_CACHE_STORAGE_CACHE_H_
 #define CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_CACHE_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/id_map.h"
 #include "base/macros.h"
-#include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/cache_storage/cache_storage_types.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "net/base/io_buffer.h"
 #include "net/disk_cache/disk_cache.h"
 #include "storage/common/quota/quota_status_code.h"
 
 namespace net {
 class URLRequestContextGetter;
 class IOBufferWithSize;
 }
 
 namespace storage {
 class BlobDataHandle;
 class BlobStorageContext;
 class QuotaManagerProxy;
 }
 
 namespace content {
-
+class CacheStorage;
 class CacheStorageBlobToDiskCache;
+class CacheStorageCacheHandle;
 class CacheMetadata;
 class CacheStorageScheduler;
 class TestCacheStorageCache;
 
 // Represents a ServiceWorker Cache as seen in
 // https://slightlyoff.github.io/ServiceWorker/spec/service_worker/ The
 // asynchronous methods are executed serially. Callbacks to the public functions
 // will be called so long as the cache object lives.
-class CONTENT_EXPORT CacheStorageCache
-    : public base::RefCounted<CacheStorageCache> {
+class CONTENT_EXPORT CacheStorageCache {
  public:
   using ErrorCallback = base::Callback<void(CacheStorageError)>;
   using ResponseCallback =
       base::Callback<void(CacheStorageError,
                           std::unique_ptr<ServiceWorkerResponse>,
                           std::unique_ptr<storage::BlobDataHandle>)>;
   using Responses = std::vector<ServiceWorkerResponse>;
   using BlobDataHandles = std::vector<storage::BlobDataHandle>;
   using ResponsesCallback =
       base::Callback<void(CacheStorageError,
                           std::unique_ptr<Responses>,
                           std::unique_ptr<BlobDataHandles>)>;
   using Requests = std::vector<ServiceWorkerFetchRequest>;
   using RequestsCallback =
       base::Callback<void(CacheStorageError, std::unique_ptr<Requests>)>;
   using SizeCallback = base::Callback<void(int64_t)>;
 
   enum EntryIndex { INDEX_HEADERS = 0, INDEX_RESPONSE_BODY, INDEX_SIDE_DATA };
 
-  static scoped_refptr<CacheStorageCache> CreateMemoryCache(
+  static std::unique_ptr<CacheStorageCache> CreateMemoryCache(
       const GURL& origin,
       const std::string& cache_name,
+      CacheStorage* cache_storage,
       scoped_refptr<net::URLRequestContextGetter> request_context_getter,
       scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy,
       base::WeakPtr<storage::BlobStorageContext> blob_context);
-  static scoped_refptr<CacheStorageCache> CreatePersistentCache(
+  static std::unique_ptr<CacheStorageCache> CreatePersistentCache(
       const GURL& origin,
       const std::string& cache_name,
+      CacheStorage* cache_storage,
       const base::FilePath& path,
       scoped_refptr<net::URLRequestContextGetter> request_context_getter,
       scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy,
       base::WeakPtr<storage::BlobStorageContext> blob_context);
 
   // Returns ERROR_TYPE_NOT_FOUND if not found.
   void Match(std::unique_ptr<ServiceWorkerFetchRequest> request,
              const ResponseCallback& callback);
 
   // Returns CACHE_STORAGE_OK and matched responses in this cache. If there are
@@ skipping 49 matching lines @@
   // will exit early. Close should only be called once per CacheStorageCache.
   void Close(const base::Closure& callback);
 
   // The size of the cache's contents.
   void Size(const SizeCallback& callback);
 
   // Gets the cache's size, closes the backend, and then runs |callback| with
   // the cache's size.
   void GetSizeThenClose(const SizeCallback& callback);
 
+  // Async operations in progress will cancel and not run their callbacks.
+  virtual ~CacheStorageCache();
+
   base::FilePath path() const { return path_; }
 
+  std::string cache_name() const { return cache_name_; }
+
   base::WeakPtr<CacheStorageCache> AsWeakPtr();
 
  private:
   friend class base::RefCounted<CacheStorageCache>;
   friend class TestCacheStorageCache;
 
   struct OpenAllEntriesContext;
   struct MatchAllContext;
   struct KeysContext;
   struct PutContext;
@@ skipping 11 matching lines @@
   using BlobToDiskCacheIDMap =
       IDMap<CacheStorageBlobToDiskCache, IDMapOwnPointer>;
   using OpenAllEntriesCallback =
       base::Callback<void(std::unique_ptr<OpenAllEntriesContext>,
                           CacheStorageError)>;
 
   CacheStorageCache(
       const GURL& origin,
       const std::string& cache_name,
       const base::FilePath& path,
+      CacheStorage* cache_storage,
       scoped_refptr<net::URLRequestContextGetter> request_context_getter,
       scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy,
       base::WeakPtr<storage::BlobStorageContext> blob_context);
 
-  // Async operations in progress will cancel and not run their callbacks.
-  virtual ~CacheStorageCache();
-
   // Returns true if the backend is ready to operate.
   bool LazyInitialize();
 
   // Returns all entries in this cache.
   void OpenAllEntries(const OpenAllEntriesCallback& callback);
   void DidOpenNextEntry(std::unique_ptr<OpenAllEntriesContext> entries_context,
                         const OpenAllEntriesCallback& callback,
                         int rv);
 
   // Match callbacks
@@ skipping 78 matching lines @@
   void PutDidWriteHeaders(std::unique_ptr<PutContext> put_context,
                           int expected_bytes,
                           int rv);
   void PutDidWriteBlobToCache(std::unique_ptr<PutContext> put_context,
                               BlobToDiskCacheIDMap::KeyType blob_to_cache_key,
                               disk_cache::ScopedEntryPtr entry,
                               bool success);
 
   // Asynchronously calculates the current cache size, notifies the quota
   // manager of any change from the last report, and sets cache_size_ to the new
-  // size. Runs |callback| once complete.
+  // size.
   void UpdateCacheSize();
-  void UpdateCacheSizeGotSize(int current_cache_size);
+  void UpdateCacheSizeGotSize(std::unique_ptr<CacheStorageCacheHandle>,
+                              int current_cache_size);
 
   // Returns ERROR_NOT_FOUND if not found. Otherwise deletes and returns OK.
   void Delete(const CacheStorageBatchOperation& operation,
               const ErrorCallback& callback);
   void DeleteImpl(std::unique_ptr<ServiceWorkerFetchRequest> request,
                   const CacheStorageCacheQueryParams& match_params,
                   const ErrorCallback& callback);
   void DeleteDidOpenAllEntries(
       std::unique_ptr<ServiceWorkerFetchRequest> request,
       const ErrorCallback& callback,
@@ skipping 52 matching lines @@
                                CacheStorageError error,
                                std::unique_ptr<Requests> requests);
   void PendingSizeCallback(const SizeCallback& callback, int64_t size);
 
   void PopulateResponseMetadata(const CacheMetadata& metadata,
                                 ServiceWorkerResponse* response);
   std::unique_ptr<storage::BlobDataHandle> PopulateResponseBody(
       disk_cache::ScopedEntryPtr entry,
       ServiceWorkerResponse* response);
 
+  // Virtual for testing.
+  virtual std::unique_ptr<CacheStorageCacheHandle> CreateCacheHandle();
+
   // Be sure to check |backend_state_| before use.
   std::unique_ptr<disk_cache::Backend> backend_;
 
   GURL origin_;
   const std::string cache_name_;
   base::FilePath path_;
+
+  // Raw pointer is safe because CacheStorage owns this object.
+  CacheStorage* cache_storage_;
+
   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
   scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy_;
   base::WeakPtr<storage::BlobStorageContext> blob_storage_context_;
   BackendState backend_state_ = BACKEND_UNINITIALIZED;
   std::unique_ptr<CacheStorageScheduler> scheduler_;
   bool initializing_ = false;
   int64_t cache_size_ = 0;
 
   // Owns the elements of the list
   BlobToDiskCacheIDMap active_blob_to_disk_cache_writers_;
 
   // Whether or not to store data in disk or memory.
   bool memory_only_;
 
   base::WeakPtrFactory<CacheStorageCache> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CacheStorageCache);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_CACHE_H_