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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 "Firestore/Source/Local/FSTMemoryPersistence.h"
#include <unordered_map>
#import "Firestore/Source/Local/FSTMemoryMutationQueue.h"
#import "Firestore/Source/Local/FSTMemoryQueryCache.h"
#import "Firestore/Source/Local/FSTMemoryRemoteDocumentCache.h"
#include "Firestore/core/src/firebase/firestore/auth/user.h"
#include "Firestore/core/src/firebase/firestore/util/hard_assert.h"
using firebase::firestore::auth::HashUser;
using firebase::firestore::auth::User;
NS_ASSUME_NONNULL_BEGIN
@interface FSTMemoryPersistence ()
@property(nonatomic, assign, getter=isStarted) BOOL started;
@end
@implementation FSTMemoryPersistence {
/**
* The FSTQueryCache representing the persisted cache of queries.
*
* Note that this is retained here to make it easier to write tests affecting both the in-memory
* and LevelDB-backed persistence layers. Tests can create a new FSTLocalStore wrapping this
* FSTPersistence instance and this will make the in-memory persistence layer behave as if it
* were actually persisting values.
*/
FSTMemoryQueryCache *_queryCache;
/** The FSTRemoteDocumentCache representing the persisted cache of remote documents. */
FSTMemoryRemoteDocumentCache *_remoteDocumentCache;
std::unordered_map<User, id<FSTMutationQueue>, HashUser> _mutationQueues;
FSTTransactionRunner _transactionRunner;
}
+ (instancetype)persistence {
return [[FSTMemoryPersistence alloc] init];
}
- (instancetype)init {
if (self = [super init]) {
_queryCache = [[FSTMemoryQueryCache alloc] initWithPersistence:self];
_remoteDocumentCache = [[FSTMemoryRemoteDocumentCache alloc] init];
}
return self;
}
- (BOOL)start:(NSError **)error {
// No durable state to read on startup.
HARD_ASSERT(!self.isStarted, "FSTMemoryPersistence double-started!");
self.started = YES;
return YES;
}
- (void)shutdown {
// No durable state to ensure is closed on shutdown.
HARD_ASSERT(self.isStarted, "FSTMemoryPersistence shutdown without start!");
self.started = NO;
}
- (_Nullable id<FSTReferenceDelegate>)referenceDelegate {
return nil;
}
- (const FSTTransactionRunner &)run {
return _transactionRunner;
}
- (id<FSTMutationQueue>)mutationQueueForUser:(const User &)user {
id<FSTMutationQueue> queue = _mutationQueues[user];
if (!queue) {
queue = [[FSTMemoryMutationQueue alloc] initWithPersistence:self];
_mutationQueues[user] = queue;
}
return queue;
}
- (id<FSTQueryCache>)queryCache {
return _queryCache;
}
- (id<FSTRemoteDocumentCache>)remoteDocumentCache {
return _remoteDocumentCache;
}
@end
NS_ASSUME_NONNULL_END
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