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[FIX] Move the storage location on iOS to Application Support #274

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Merged
merged 7 commits into from
Feb 10, 2020
Merged

[FIX] Move the storage location on iOS to Application Support #274

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7cb5d27
Move the storage location on iOS to Application Support
HeyImChris Jan 3, 2020
ad83d34
remove unnecessary dispatch_once calls
HeyImChris Jan 7, 2020
0c4153d
Add sequential migration and optional clearData flags so we can opt i…
HeyImChris Feb 1, 2020
4e281b3
Merge branch 'LEGACY' into heyImChris/storageLocationFix_iOS
HeyImChris Feb 1, 2020
1f01ddc
Option to not overwrite ApplicationSupport data
HeyImChris Feb 6, 2020
a7a85ed
Merge branch 'heyImChris/storageLocationFix_iOS' of https://github.co…
HeyImChris Feb 6, 2020
17ac36a
merge two flags into one
HeyImChris Feb 8, 2020
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100 changes: 60 additions & 40 deletions ios/RNCAsyncStorage.m
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Original file line number Diff line number Diff line change
Expand Up @@ -79,13 +79,24 @@ static void RCTAppendError(NSDictionary *error, NSMutableArray<NSDictionary *> *
return nil;
}

// DO NOT USE
// This is used internally to migrate data from the old file location to the new one.
// Please use `RCTCreateStorageDirectoryPath` instead
static NSString *RCTCreateStorageDirectoryPath_deprecated(NSString *storageDir) {
NSString *storageDirectoryPath;
#if TARGET_OS_TV
storageDirectoryPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).firstObject;
#else
storageDirectoryPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;
#endif
storageDirectoryPath = [storageDirectoryPath stringByAppendingPathComponent:storageDir];
return storageDirectoryPath;
}

static NSString *RCTCreateStorageDirectoryPath(NSString *storageDir) {
NSString *storageDirectoryPath;
#if TARGET_OS_TV
storageDirectoryPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES).firstObject;
#else
storageDirectoryPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;
#endif
// We should use the "Application Support/[bundleID]" folder for persistent data storage that's hidden from users
NSString *storageDirectoryPath = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES).firstObject;
storageDirectoryPath = [storageDirectoryPath stringByAppendingPathComponent:[[NSBundle mainBundle] bundleIdentifier]]; // Per Apple's docs, all app content in Application Support must be within a subdirectory of the app's bundle identifier
storageDirectoryPath = [storageDirectoryPath stringByAppendingPathComponent:storageDir];
return storageDirectoryPath;
}
Expand All @@ -102,7 +113,7 @@ static void RCTAppendError(NSDictionary *error, NSMutableArray<NSDictionary *> *

static NSString *RCTCreateManifestFilePath(NSString *storageDirectory)
{
return [RCTCreateStorageDirectoryPath(storageDirectory) stringByAppendingPathComponent:RCTManifestFileName];
return [storageDirectory stringByAppendingPathComponent:RCTManifestFileName];
}

static NSString *RCTGetManifestFilePath()
Expand Down Expand Up @@ -194,58 +205,61 @@ static void RCTStorageDirectoryMigrationLogError(NSString *reason, NSError *erro
RCTLogWarn(@"%@: %@", reason, error ? error.description : @"");
}

static void RCTStorageDirectoryCleanupOld()
static void RCTStorageDirectoryCleanupOld(NSString *oldDirectoryPath)
{
NSError *error;
if (![[NSFileManager defaultManager] removeItemAtPath:RCTCreateStorageDirectoryPath(RCTOldStorageDirectory) error:&error]) {
if (![[NSFileManager defaultManager] removeItemAtPath:oldDirectoryPath error:&error]) {
RCTStorageDirectoryMigrationLogError(@"Failed to remove old storage directory during migration", error);
}
}

static void RCTStorageDirectoryMigrate()
static void RCTStorageDirectoryMigrate(NSString *oldDirectoryPath, NSString *newDirectoryPath, BOOL shouldCleanupOldDirectory)
{
NSError *error;
// Migrate data by copying old storage directory to new storage directory location
if (![[NSFileManager defaultManager] copyItemAtPath:RCTCreateStorageDirectoryPath(RCTOldStorageDirectory) toPath:RCTGetStorageDirectory() error:&error]) {
if (![[NSFileManager defaultManager] copyItemAtPath:oldDirectoryPath toPath:newDirectoryPath error:&error]) {
RCTStorageDirectoryMigrationLogError(@"Failed to copy old storage directory to new storage directory location during migration", error);
} else {
} else if (shouldCleanupOldDirectory) {
// If copying succeeds, remove old storage directory
RCTStorageDirectoryCleanupOld();
RCTStorageDirectoryCleanupOld(oldDirectoryPath);
}
}

/**
* This check is added to make sure that anyone coming from pre-1.2.2 does not lose cached data.
* Data is migrated from the "RNCAsyncLocalStorage_V1" directory to the "RCTAsyncLocalStorage_V1" directory.
* Check that data is migrated from the old location to the new location
* fromStorageDirectory: the directory where the older data lives
* toStorageDirectory: the directory where the new data should live
* shouldCleanupOldDirectoryAndOverwriteNewDirectory: YES if we should delete the old directory's contents and overwrite the new directory's contents during the migration to the new directory
*/
static void RCTStorageDirectoryMigrationCheck()
static void RCTStorageDirectoryMigrationCheck(NSString *fromStorageDirectory, NSString *toStorageDirectory, BOOL shouldCleanupOldDirectoryAndOverwriteNewDirectory)
{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
NSError *error;
BOOL isDir;
// If the old directory exists, it means we may need to migrate old data to the new directory
if ([[NSFileManager defaultManager] fileExistsAtPath:RCTCreateStorageDirectoryPath(RCTOldStorageDirectory) isDirectory:&isDir] && isDir) {
// Check if the new storage directory location already exists
if ([[NSFileManager defaultManager] fileExistsAtPath:RCTGetStorageDirectory()]) {
// If new storage location exists, check if the new storage has been modified sooner
if ([RCTManifestModificationDate(RCTGetManifestFilePath()) compare:RCTManifestModificationDate(RCTCreateManifestFilePath(RCTOldStorageDirectory))] == 1) {
// If new location has been modified more recently, simply clean out old data
RCTStorageDirectoryCleanupOld();
NSError *error;
BOOL isDir;
NSFileManager *fileManager = [NSFileManager defaultManager];
// If the old directory exists, it means we may need to migrate old data to the new directory
if ([fileManager fileExistsAtPath:fromStorageDirectory isDirectory:&isDir] && isDir) {
// Check if the new storage directory location already exists
if ([fileManager fileExistsAtPath:toStorageDirectory]) {
// If new storage location exists, check if the new storage has been modified sooner in which case we may want to cleanup the old location
if ([RCTManifestModificationDate(RCTCreateManifestFilePath(toStorageDirectory)) compare:RCTManifestModificationDate(RCTCreateManifestFilePath(fromStorageDirectory))] == 1) {
// If new location has been modified more recently, simply clean out old data
if (shouldCleanupOldDirectoryAndOverwriteNewDirectory) {
RCTStorageDirectoryCleanupOld(fromStorageDirectory);
}
} else if (shouldCleanupOldDirectoryAndOverwriteNewDirectory) {
// If old location has been modified more recently, remove new storage and migrate
if (![fileManager removeItemAtPath:toStorageDirectory error:&error]) {
RCTStorageDirectoryMigrationLogError(@"Failed to remove new storage directory during migration", error);
} else {
// If old location has been modified more recently, remove new storage and migrate
if (![[NSFileManager defaultManager] removeItemAtPath:RCTGetStorageDirectory() error:&error]) {
RCTStorageDirectoryMigrationLogError(@"Failed to remove new storage directory during migration", error);
} else {
RCTStorageDirectoryMigrate();
}
RCTStorageDirectoryMigrate(fromStorageDirectory, toStorageDirectory, shouldCleanupOldDirectoryAndOverwriteNewDirectory);
}
} else {
// If new storage location doesn't exist, migrate data
RCTStorageDirectoryMigrate();
}
} else {
// If new storage location doesn't exist, migrate data
RCTStorageDirectoryMigrate(fromStorageDirectory, toStorageDirectory, shouldCleanupOldDirectoryAndOverwriteNewDirectory);
}
});
}
}

#pragma mark - RNCAsyncStorage
Expand All @@ -269,7 +283,13 @@ - (instancetype)init
if (!(self = [super init])) {
return nil;
}
RCTStorageDirectoryMigrationCheck();

// First migrate our deprecated path "Documents/.../RNCAsyncLocalStorage_V1" to "Documents/.../RCTAsyncLocalStorage_V1"
RCTStorageDirectoryMigrationCheck(RCTCreateStorageDirectoryPath_deprecated(RCTOldStorageDirectory), RCTCreateStorageDirectoryPath_deprecated(RCTStorageDirectory), YES);

// Then migrate what's in "Documents/.../RCTAsyncLocalStorage_V1" to "Application Support/[bundleID]/RCTAsyncLocalStorage_V1"
RCTStorageDirectoryMigrationCheck(RCTCreateStorageDirectoryPath_deprecated(RCTStorageDirectory), RCTCreateStorageDirectoryPath(RCTStorageDirectory), NO);

return self;
}

Expand Down Expand Up @@ -346,7 +366,7 @@ - (NSDictionary *)_ensureSetup

if (!_haveSetup) {
NSDictionary *errorOut = nil;
NSString *serialized = RCTReadFile(RCTGetManifestFilePath(), RCTManifestFileName, &errorOut);
NSString *serialized = RCTReadFile(RCTCreateStorageDirectoryPath(RCTGetManifestFilePath()), RCTManifestFileName, &errorOut);
if (!serialized) {
if (errorOut) {
// We cannot simply create a new manifest in case the file does exist but we have no access to it.
Expand Down Expand Up @@ -377,7 +397,7 @@ - (NSDictionary *)_writeManifest:(NSMutableArray<NSDictionary *> **)errors
{
NSError *error;
NSString *serialized = RCTJSONStringify(_manifest, &error);
[serialized writeToFile:RCTGetManifestFilePath() atomically:YES encoding:NSUTF8StringEncoding error:&error];
[serialized writeToFile:RCTCreateStorageDirectoryPath(RCTGetManifestFilePath()) atomically:YES encoding:NSUTF8StringEncoding error:&error];
NSDictionary *errorOut;
if (error) {
errorOut = RCTMakeError(@"Failed to write manifest file.", error, nil);
Expand Down