storage upgrade from 1.2.1 to LEGACY branch doesn't upgrade correctly

Current behavior

when upgrading storage from 1.2.1 to the LEGACY branch, storage from an old directory is not being moved/copied over to the new directory… i believe this is happening because on init when RCTStorageDirectoryMigrate tries to migrate new data to [root]/data/Containers/Data/Application/[app id]/Library/Application Support/[bundle id]/RCTAsyncLocalStorage_V1 the folder doesn’t exist. when i try to run the below code right before the filemanager attempts to copy over the data, migration [NSFileManager copyItemAtPath: toPath: Error:] runs correctly:

    if (!RCTHasCreatedStorageDirectory) {
        NSString *storageDirectoryPath = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDomainMask, YES).firstObject;
        storageDirectoryPath = [storageDirectoryPath stringByAppendingPathComponent:[[NSBundle mainBundle] bundleIdentifier]];

      [[NSFileManager defaultManager] createDirectoryAtPath:storageDirectoryPath
                                withIntermediateDirectories:YES
                                                 attributes:nil
                                                      error:&error];
      RCTHasCreatedStorageDirectory = YES;
    }

Expected behavior

We shouldn’t get the warning and folder migration should happen correctly.

Repro steps

1. check out this repo: https://github.com/frankenthumbs/AsyncStorageUpgradePOC
2. run yarn on root
3. run pod install on /ios folder
4. run ios application
5. tap set storage to 'I Like to Save It' to save a string to async storage
6. in package json, upgrade @react-native-community/async-storage to git://github.com/react-native-community/async-storage.git#4e49db6308882515a284a183c8e9daf5a50b33ef
7. in change lines

pod 'react-native-async-storage', :path => '../node_modules/@react-native-community/async-storage'

to

pod 'RNCAsyncStorage', :path => '../node_modules/@react-native-community/async-storage'

1. run yarn and pod install described in step 2 and 3
2. run application and notice that async-storage is null (where it should be set to saved string) and we get aforementioned warning.

Environment

• Async Storage version: commit: 4e49db6308882515a284a183c8e9daf5a50b33ef
• React-Native version: 0.61.5
• Platform tested: iOS
• Logs/Error that are relevant: 2020-02-18 17:00:13.828 [warn][tid:com.facebook.react.JavaScript][RNCAsyncStorage.m:205] Failed to copy old storage directory to new storage directory location during migration: Error Domain=NSCocoaErrorDomain Code=4 "The file “RCTAsyncLocalStorage_V1” doesn’t exist." UserInfo={NSSourceFilePathErrorKey=/Users/joon.son/Library/Developer/CoreSimulator/Devices/A9A28D7F-CDD1-49EC-9138-356C0A9A7C4C/data/Containers/Data/Application/B8CAFA4D-89A5-4EE5-92F0-78B4406870D3/Documents/RCTAsyncLocalStorage_V1, NSUserStringVariant=( Copy ), NSDestinationFilePath=/Users/joon.son/Library/Developer/CoreSimulator/Devices/A9A28D7F-CDD1-49EC-9138-356C0A9A7C4C/data/Containers/Data/Application/B8CAFA4D-89A5-4EE5-92F0-78B4406870D3/Library/Application Support/com.nfl.mobile3/RCTAsyncLocalStorage_V1, NSFilePath=/Users/joon.son/Library/Developer/CoreSimulator/Devices/A9A28D7F-CDD1-49EC-9138-356C0A9A7C4C/data/Containers/Data/Application/B8CAFA4D-89A5-4EE5-92F0-78B4406870D3/Documents/RCTAsyncLocalStorage_V1, NSUnderlyingError=0x60000159a3a0 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}}

[frankenthumbs]

i put up a PR here. https://github.com/react-native-community/async-storage/pull/303 definitely not my finest work… would love feedback on it if possible.

[tranhoangduong1994]

I experienced the same issue when migrate from 1.6.2 to 1.8.0. For now, using 1.7.1 is my workaround.