gecko/netwerk/cache/nsDiskCacheDeviceSQL.h

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/* vim:set ts=2 sw=2 sts=2 et cin: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla.
*
* The Initial Developer of the Original Code is IBM Corporation.
* Portions created by IBM Corporation are Copyright (C) 2004
* IBM Corporation. All Rights Reserved.
*
* Contributor(s):
* Darin Fisher <darin@meer.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsOfflineCacheDevice_h__
#define nsOfflineCacheDevice_h__
#include "nsCacheDevice.h"
#include "nsIApplicationCache.h"
#include "nsIApplicationCacheService.h"
#include "nsILocalFile.h"
#include "nsIObserver.h"
#include "mozIStorageConnection.h"
#include "mozIStorageFunction.h"
#include "nsIFile.h"
#include "nsAutoPtr.h"
#include "nsCOMPtr.h"
#include "nsCOMArray.h"
#include "nsInterfaceHashtable.h"
#include "nsClassHashtable.h"
#include "nsHashSets.h"
#include "nsWeakReference.h"
class nsIURI;
class nsOfflineCacheDevice;
class nsApplicationCacheNamespace : public nsIApplicationCacheNamespace
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIAPPLICATIONCACHENAMESPACE
nsApplicationCacheNamespace() : mItemType(0) {}
private:
PRUint32 mItemType;
nsCString mNamespaceSpec;
nsCString mData;
};
class nsOfflineCacheEvictionFunction : public mozIStorageFunction {
public:
NS_DECL_ISUPPORTS
NS_DECL_MOZISTORAGEFUNCTION
nsOfflineCacheEvictionFunction(nsOfflineCacheDevice *device)
: mDevice(device)
{}
void Reset() { mItems.Clear(); }
void Apply();
private:
nsOfflineCacheDevice *mDevice;
nsCOMArray<nsIFile> mItems;
};
class nsOfflineCacheDevice : public nsCacheDevice
, public nsIApplicationCacheService
{
public:
nsOfflineCacheDevice();
NS_DECL_ISUPPORTS
NS_DECL_NSIAPPLICATIONCACHESERVICE
/**
* nsCacheDevice methods
*/
virtual ~nsOfflineCacheDevice();
static nsOfflineCacheDevice *GetInstance();
virtual nsresult Init();
virtual nsresult Shutdown();
virtual const char * GetDeviceID(void);
virtual nsCacheEntry * FindEntry(nsCString * key, PRBool *collision);
virtual nsresult DeactivateEntry(nsCacheEntry * entry);
virtual nsresult BindEntry(nsCacheEntry * entry);
virtual void DoomEntry( nsCacheEntry * entry );
virtual nsresult OpenInputStreamForEntry(nsCacheEntry * entry,
nsCacheAccessMode mode,
PRUint32 offset,
nsIInputStream ** result);
virtual nsresult OpenOutputStreamForEntry(nsCacheEntry * entry,
nsCacheAccessMode mode,
PRUint32 offset,
nsIOutputStream ** result);
virtual nsresult GetFileForEntry(nsCacheEntry * entry,
nsIFile ** result);
virtual nsresult OnDataSizeChange(nsCacheEntry * entry, PRInt32 deltaSize);
virtual nsresult Visit(nsICacheVisitor * visitor);
virtual nsresult EvictEntries(const char * clientID);
/* Entry ownership */
nsresult GetOwnerDomains(const char * clientID,
PRUint32 * count,
char *** domains);
nsresult GetOwnerURIs(const char * clientID,
const nsACString & ownerDomain,
PRUint32 * count,
char *** uris);
nsresult SetOwnedKeys(const char * clientID,
const nsACString & ownerDomain,
const nsACString & ownerUrl,
PRUint32 count,
const char ** keys);
nsresult GetOwnedKeys(const char * clientID,
const nsACString & ownerDomain,
const nsACString & ownerUrl,
PRUint32 * count,
char *** keys);
nsresult AddOwnedKey(const char * clientID,
const nsACString & ownerDomain,
const nsACString & ownerURI,
const nsACString & key);
nsresult RemoveOwnedKey(const char * clientID,
const nsACString & ownerDomain,
const nsACString & ownerURI,
const nsACString & key);
nsresult KeyIsOwned(const char * clientID,
const nsACString & ownerDomain,
const nsACString & ownerURI,
const nsACString & key,
PRBool * isOwned);
nsresult ClearKeysOwnedByDomain(const char *clientID,
const nsACString &ownerDomain);
nsresult EvictUnownedEntries(const char *clientID);
nsresult ActivateCache(const nsCSubstring &group,
const nsCSubstring &clientID);
PRBool IsActiveCache(const nsCSubstring &group,
const nsCSubstring &clientID);
nsresult GetGroupForCache(const nsCSubstring &clientID,
nsCString &out);
/**
* Preference accessors
*/
void SetCacheParentDirectory(nsILocalFile * parentDir);
void SetCapacity(PRUint32 capacity);
nsILocalFile * CacheDirectory() { return mCacheDirectory; }
PRUint32 CacheCapacity() { return mCacheCapacity; }
PRUint32 CacheSize();
PRUint32 EntryCount();
private:
friend class nsApplicationCache;
static PLDHashOperator ShutdownApplicationCache(const nsACString &key,
nsIWeakReference *weakRef,
void *ctx);
static PRBool GetStrictFileOriginPolicy();
PRBool Initialized() { return mDB != nsnull; }
nsresult InitActiveCaches();
nsresult UpdateEntry(nsCacheEntry *entry);
nsresult UpdateEntrySize(nsCacheEntry *entry, PRUint32 newSize);
nsresult DeleteEntry(nsCacheEntry *entry, PRBool deleteData);
nsresult DeleteData(nsCacheEntry *entry);
nsresult EnableEvictionObserver();
nsresult DisableEvictionObserver();
PRBool CanUseCache(nsIURI *keyURI, const nsCString &clientID);
nsresult MarkEntry(const nsCString &clientID,
const nsACString &key,
PRUint32 typeBits);
nsresult UnmarkEntry(const nsCString &clientID,
const nsACString &key,
PRUint32 typeBits);
nsresult CacheOpportunistically(const nsCString &clientID,
const nsACString &key);
nsresult GetTypes(const nsCString &clientID,
const nsACString &key,
PRUint32 *typeBits);
nsresult GetMatchingNamespace(const nsCString &clientID,
const nsACString &key,
nsIApplicationCacheNamespace **out);
nsresult GatherEntries(const nsCString &clientID,
PRUint32 typeBits,
PRUint32 *count,
char *** values);
nsresult AddNamespace(const nsCString &clientID,
nsIApplicationCacheNamespace *ns);
nsresult GetUsage(const nsACString &clientID,
PRUint32 *usage);
nsresult RunSimpleQuery(mozIStorageStatement *statment,
PRUint32 resultIndex,
PRUint32 * count,
char *** values);
nsCOMPtr<mozIStorageConnection> mDB;
nsRefPtr<nsOfflineCacheEvictionFunction> mEvictionFunction;
nsCOMPtr<mozIStorageStatement> mStatement_CacheSize;
nsCOMPtr<mozIStorageStatement> mStatement_ApplicationCacheSize;
nsCOMPtr<mozIStorageStatement> mStatement_EntryCount;
nsCOMPtr<mozIStorageStatement> mStatement_UpdateEntry;
nsCOMPtr<mozIStorageStatement> mStatement_UpdateEntrySize;
nsCOMPtr<mozIStorageStatement> mStatement_UpdateEntryFlags;
nsCOMPtr<mozIStorageStatement> mStatement_DeleteEntry;
nsCOMPtr<mozIStorageStatement> mStatement_FindEntry;
nsCOMPtr<mozIStorageStatement> mStatement_BindEntry;
nsCOMPtr<mozIStorageStatement> mStatement_ClearDomain;
nsCOMPtr<mozIStorageStatement> mStatement_MarkEntry;
nsCOMPtr<mozIStorageStatement> mStatement_UnmarkEntry;
nsCOMPtr<mozIStorageStatement> mStatement_GetTypes;
nsCOMPtr<mozIStorageStatement> mStatement_FindNamespaceEntry;
nsCOMPtr<mozIStorageStatement> mStatement_InsertNamespaceEntry;
nsCOMPtr<mozIStorageStatement> mStatement_CleanupUnmarked;
nsCOMPtr<mozIStorageStatement> mStatement_GatherEntries;
nsCOMPtr<mozIStorageStatement> mStatement_ActivateClient;
nsCOMPtr<mozIStorageStatement> mStatement_DeactivateGroup;
nsCOMPtr<mozIStorageStatement> mStatement_FindClient;
nsCOMPtr<mozIStorageStatement> mStatement_FindClientByNamespace;
nsCOMPtr<mozIStorageStatement> mStatement_EnumerateGroups;
nsCOMPtr<nsILocalFile> mCacheDirectory;
PRUint32 mCacheCapacity; // in bytes
PRInt32 mDeltaCounter;
nsInterfaceHashtable<nsCStringHashKey, nsIWeakReference> mCaches;
nsClassHashtable<nsCStringHashKey, nsCString> mActiveCachesByGroup;
nsCStringHashSet mActiveCaches;
nsCOMPtr<nsIThread> mInitThread;
};
#endif // nsOfflineCacheDevice_h__