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/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <FirebaseCore/FIRApp.h>
#import "FIRDatabaseConfig.h"
#import "FIRDatabaseConfig_Private.h"
#import "FIRNoopAuthTokenProvider.h"
#import "FAuthTokenProvider.h"
@interface FIRDatabaseConfig (Private)
@property (nonatomic, strong, readwrite) NSString *sessionIdentifier;
@end
@implementation FIRDatabaseConfig
- (id)init {
[NSException raise:NSInvalidArgumentException format:@"Can't create config objects!"];
return nil;
}
- (id)initWithSessionIdentifier:(NSString *)identifier authTokenProvider:(id<FAuthTokenProvider>)authTokenProvider {
self = [super init];
if (self != nil) {
self->_sessionIdentifier = identifier;
self->_callbackQueue = dispatch_get_main_queue();
self->_persistenceCacheSizeBytes = 10*1024*1024; // Default cache size is 10MB
self->_authTokenProvider = authTokenProvider;
}
return self;
}
- (void)assertUnfrozen {
if (self.isFrozen) {
[NSException raise:NSGenericException format:@"Can't modify config objects after they are in use for FIRDatabaseReferences."];
}
}
- (void)setAuthTokenProvider:(id<FAuthTokenProvider>)authTokenProvider {
[self assertUnfrozen];
self->_authTokenProvider = authTokenProvider;
}
- (void)setPersistenceEnabled:(BOOL)persistenceEnabled {
[self assertUnfrozen];
self->_persistenceEnabled = persistenceEnabled;
}
- (void)setPersistenceCacheSizeBytes:(NSUInteger)persistenceCacheSizeBytes {
[self assertUnfrozen];
// Can't be less than 1MB
if (persistenceCacheSizeBytes < 1024*1024) {
[NSException raise:NSInvalidArgumentException format:@"The minimum cache size must be at least 1MB"];
}
if (persistenceCacheSizeBytes > 100*1024*1024) {
[NSException raise:NSInvalidArgumentException format:@"Firebase Database currently doesn't support a cache size larger than 100MB"];
}
self->_persistenceCacheSizeBytes = persistenceCacheSizeBytes;
}
- (void)setCallbackQueue:(dispatch_queue_t)callbackQueue {
[self assertUnfrozen];
self->_callbackQueue = callbackQueue;
}
- (void)freeze {
self->_isFrozen = YES;
}
// TODO: Only used for tests. Migrate to FIRDatabase and remove.
+ (FIRDatabaseConfig *)defaultConfig {
static dispatch_once_t onceToken;
static FIRDatabaseConfig *defaultConfig;
dispatch_once(&onceToken, ^{
defaultConfig = [FIRDatabaseConfig configForName:@"default"];
});
return defaultConfig;
}
// TODO: This is only used for tests. We should fix them to go through FIRDatabase and remove
// this method and the sessionsConfigs dictionary (FIRDatabase automatically creates one config per app).
+ (FIRDatabaseConfig *)configForName:(NSString *)name {
NSRegularExpression *expression = [NSRegularExpression regularExpressionWithPattern:@"^[a-zA-Z0-9-_]+$" options:0 error:nil];
if ([expression numberOfMatchesInString:name options:0 range:NSMakeRange(0, name.length)] == 0) {
[NSException raise:NSInvalidArgumentException format:@"Name can only contain [a-zA-Z0-9-_]"];
}
static dispatch_once_t onceToken;
static NSMutableDictionary *sessionConfigs;
dispatch_once(&onceToken, ^{
sessionConfigs = [NSMutableDictionary dictionary];
});
@synchronized(sessionConfigs) {
if (!sessionConfigs[name]) {
id<FAuthTokenProvider> authTokenProvider = [FAuthTokenProvider authTokenProviderForApp:[FIRApp defaultApp]];
sessionConfigs[name] = [[FIRDatabaseConfig alloc] initWithSessionIdentifier:name
authTokenProvider:authTokenProvider];
}
return sessionConfigs[name];
}
}
@end
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