The interface for clients to access Blockstore.
Clients should call
storeBytes(StoreBytesData) to store authentication credentials byte[]
bytes to enable seamless sign-in on other devices.
Clients should call
retrieveBytes() to fetch the authentication credentials to seamlessly sign in
users on a newly setup device.
Constant Summary
| int | MAX_SIZE | Maximum allowed size of byte blobs that can be
stored using BlockstoreClient#storeBytes. |
Public Method Summary
| abstract Task<byte[]> |
retrieveBytes()
Returns a
Task
which asynchronously retrieves the previously-stored bytes, if any.
|
| abstract Task<Integer> |
storeBytes(StoreBytesData
storeBytesData)
Returns a
Task
which asynchronously stores the provided byte[] bytes.
|
Constants
public static final int MAX_SIZE
Maximum allowed size of byte blobs that can be stored using
BlockstoreClient#storeBytes.
Public Methods
public abstract Task<byte[]> retrieveBytes ()
Returns a Task which
asynchronously retrieves the previously-stored bytes, if any. The maximum size of the
byte[] is the
MAX_SIZE.
The byte[] may have been written on the same device or may have been
transferred during the device setup.
Use this API to seamlessly sign-in users to the apps on a new device.
If no data is found, returns an empty byte array. Note that the data may be cleared by Google Play Services on certain user actions, like user clearing app storage (among others).
public abstract Task<Integer> storeBytes (StoreBytesData storeBytesData)
Returns a Task which
asynchronously stores the provided byte[] bytes.
The relevant data is stored locally and will be transferred to a new device when during the device-to-device restore and if a google account is also transferred. In the future, this data may be backed up to cloud for cloud restore events.
The maximum size of the byte[] bytes allowed is
BlockstoreClient#MAX_SIZE, otherwise, the API will throw an
Exception.
The Integer return value is the size of byte[] bytes
successfully stored.
Use this API to store small data blobs that can enable seamless sign in for your apps. The API may be called periodically (for example, a few times per day) to refresh the data blob. Successive calls to this API would overwrite the existing bytes.