session-ios/SignalServiceKit/src/Storage/OWSStorage.h
2018-04-25 09:30:23 -04:00

109 lines
2.9 KiB
Objective-C

//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//
#import <YapDatabase/YapDatabase.h>
NS_ASSUME_NONNULL_BEGIN
extern NSString *const StorageIsReadyNotification;
@class YapDatabaseExtension;
@protocol OWSDatabaseConnectionDelegate <NSObject>
- (BOOL)areAllRegistrationsComplete;
@end
#pragma mark -
@interface OWSDatabaseConnection : YapDatabaseConnection
@property (atomic, weak) id<OWSDatabaseConnectionDelegate> delegate;
- (instancetype)init NS_UNAVAILABLE;
- (instancetype)initWithDatabase:(YapDatabase *)database
delegate:(id<OWSDatabaseConnectionDelegate>)delegate NS_DESIGNATED_INITIALIZER;
@end
#pragma mark -
@interface OWSDatabase : YapDatabase
- (instancetype)init NS_UNAVAILABLE;
- (id)initWithPath:(NSString *)inPath
serializer:(nullable YapDatabaseSerializer)inSerializer
deserializer:(YapDatabaseDeserializer)inDeserializer
options:(YapDatabaseOptions *)inOptions
delegate:(id<OWSDatabaseConnectionDelegate>)delegate NS_DESIGNATED_INITIALIZER;
@end
#pragma mark -
typedef void (^OWSStorageMigrationBlock)(void);
@interface OWSStorage : NSObject
- (instancetype)init NS_UNAVAILABLE;
- (instancetype)initStorage NS_DESIGNATED_INITIALIZER;
// Returns YES if _ALL_ storage classes have completed both their
// sync _AND_ async view registrations.
+ (BOOL)isStorageReady;
// This object can be used to filter database notifications.
@property (nonatomic, readonly, nullable) id dbNotificationObject;
+ (void)registerExtensionsWithMigrationBlock:(OWSStorageMigrationBlock)migrationBlock;
+ (void)resetAllStorage;
- (YapDatabaseConnection *)newDatabaseConnection;
#pragma mark - Extension Registration
+ (void)incrementVersionOfDatabaseExtension:(NSString *)extensionName;
- (BOOL)registerExtension:(YapDatabaseExtension *)extension withName:(NSString *)extensionName;
- (void)asyncRegisterExtension:(YapDatabaseExtension *)extension withName:(NSString *)extensionName;
- (void)asyncRegisterExtension:(YapDatabaseExtension *)extension
withName:(NSString *)extensionName
completion:(nullable dispatch_block_t)completion;
- (nullable id)registeredExtension:(NSString *)extensionName;
- (NSArray<NSString *> *)registeredExtensionNames;
#pragma mark -
- (unsigned long long)databaseFileSize;
- (unsigned long long)databaseWALFileSize;
- (unsigned long long)databaseSHMFileSize;
- (YapDatabaseConnection *)registrationConnection;
#pragma mark - Password
/**
* Returns NO if:
*
* - Keychain is locked because device has just been restarted.
* - Password could not be retrieved because of a keychain error.
*/
+ (BOOL)isDatabasePasswordAccessible;
+ (nullable NSData *)tryToLoadDatabaseLegacyPassphrase:(NSError **)errorHandle;
+ (void)removeLegacyPassphrase;
+ (void)storeDatabaseCipherKeySpec:(NSData *)cipherKeySpecData;
- (void)logFileSizes;
@end
NS_ASSUME_NONNULL_END