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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/FSTWriteGroupTracker.h"
#import "Firestore/Source/Local/FSTWriteGroup.h"
#import "Firestore/Source/Util/FSTAssert.h"
NS_ASSUME_NONNULL_BEGIN
@interface FSTWriteGroupTracker ()
@property(nonatomic, strong, nullable) FSTWriteGroup *activeGroup;
@end
@implementation FSTWriteGroupTracker
+ (instancetype)tracker {
return [[FSTWriteGroupTracker alloc] init];
}
- (FSTWriteGroup *)startGroupWithAction:(NSString *)action {
// NOTE: We can relax this to allow nesting if/when we find we need it.
FSTAssert(!self.activeGroup,
@"Attempt to create write group (%@) while existing write group (%@) still active.",
action, self.activeGroup.action);
self.activeGroup = [FSTWriteGroup groupWithAction:action];
return self.activeGroup;
}
- (FSTWriteGroup *)startGroupWithAction:(NSString *)action
transaction:
(firebase::firestore::local::LevelDbTransaction *)transaction {
// NOTE: We can relax this to allow nesting if/when we find we need it.
FSTAssert(!self.activeGroup,
@"Attempt to create write group (%@) while existing write group (%@) still active.",
action, self.activeGroup.action);
self.activeGroup = [FSTWriteGroup groupWithAction:action transaction:transaction];
return self.activeGroup;
}
- (void)endGroup:(FSTWriteGroup *)group {
FSTAssert(self.activeGroup == group,
@"Attempted to end write group (%@) which is different from active group (%@)",
group.action, self.activeGroup.action);
self.activeGroup = nil;
}
@end
NS_ASSUME_NONNULL_END
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