AsyncStorage Couldn't read row 0, col 0 from CursorWindow

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This issue was originally created by @JAStanton as facebook/react-native#12529.

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Description

When reading values that are too large using AsyncStorage on Android I run into this error:

I wrote a large value with AsyncStorage and later tried to read it, but it crashed.

BaseError: Couldn't read row 0, col 0 from CursorWindow.  Make sure the Cursor is initialized correctly before accessing data from it.
  at e (/node_modules/react-native/Libraries/Storage/AsyncStorage.js:423:22)
  at None (/node_modules/react-native/Libraries/Storage/AsyncStorage.js:416:71)
  at map ([native code])
  at errors (/node_modules/react-native/Libraries/Storage/AsyncStorage.js:416:51)
  at slicedToArray (/node_modules/react-native/Libraries/Storage/AsyncStorage.js:54:33)

Reproduction

It looks like on iOS we write to disk when the value is above a threshold and on Android we write to sqllite always.

let x = 'x';
while (x.length <= 3194304) {
  x = `${x}${x}`;
}
await AsyncStorage.setItem('@@GARBAGE@@', x); // works
const garbage = await AsyncStorage.getItem('@@GARBAGE@@'); // throws

Solution

In order for me to fix this I’ll need to re-write AsyncStorage to write to disk instead of writing to sql. https://github.com/mvayngrib/react-native-safe-async-storage <— this guys has the right idea but his code is super old and broken.

Additional Information

• React Native version: 0.39.2
• Platform: Android
• Operating System: Samsung Galaxy S4

[sergiosbx]

Workaround:

async getSafeItem(key) {
  return new Promise((resolve, reject) => {
    if (!key) {
      reject('Invalid key');
    }
    AsyncStorage.getItem(createKey(key)).then((value) => {
      resolve(value);
    }, () => {// Couldn't read row 0, col 0 from CursorWindow
      resolve(null); // Force not to break
    });
  });
}

Additional Information

• React Native version: 0.57.0
• Platform: Android
• Operating System: All Motorola devices

[krizzu]

@juliopiubello Because this whole module is about AS. Since everything is related I just remove redundant labels