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26 lines
747 B
Objective-C
26 lines
747 B
Objective-C
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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#import <SignalServiceKit/TSYapDatabaseObject.h>
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NS_ASSUME_NONNULL_BEGIN
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typedef void (^OWSDatabaseMigrationCompletion)(void);
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@class OWSPrimaryStorage;
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@interface OWSDatabaseMigration : TSYapDatabaseObject
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@property (nonatomic, readonly) OWSPrimaryStorage *primaryStorage;
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// Prefer nonblocking (async) migrations by overriding `runUpWithTransaction:` in a subclass.
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// Blocking migrations running too long will crash the app, effectively bricking install
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// because the user will never get past it.
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// If you must write a launch-blocking migration, override runUp.
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- (void)runUpWithCompletion:(OWSDatabaseMigrationCompletion)completion;
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@end
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NS_ASSUME_NONNULL_END
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