About Sync Statuses

To enable full control over “in-flight” sync operations, Mobile SDK 7.1 adds a new status that indicates that the operation has been stopped.

Before Mobile SDK 7.1, each sync operation progressed through a cycle of statuses: new, running, and either failed or done. Mobile SDK 7.1 adds a stopped status to the final step, changing the cycle as follows:

new
running
stopped | failed | done

When key events occur, sync statuses are updated as follows.

Event	Previous Status	Reported Status
App creates a sync object	—	new
Sync object is submitted for running by a call to a sync down or sync up method, or by a first call to `reSync`	new	running
Sync operation completes successfully	running	done
Sync operation fails to complete	running	failed
A sync manager stop request is detected	running	stopped
Sync manager restarts with the `restartStoppedSyncs` parameter set to true	stopped	running
`reSync` is called	stopped/failed/done	running

Flow chart showing how sync status changes at key events

Any call to a reSync method on a currently running sync operation fails.
Any call to a reSync, syncDown, syncUp, or cleanResyncGhosts method fails if the sync manager state is not in the accepting_syncs state.
If any sync operations are running when the sync manager is first initialized—for example, if the app recently crashed shortly after starting syncs—the sync manager sets their statuses to stopped.

Note

Getting Sync Objects by Status

Beginning with Mobile SDK 7.1, sync manager objects support a getSyncsWithStatus method that returns all sync state objects whose status matches a given value. You can use this method, for example, to iterate through all stopped syncs and restart them manually.

To assume manual restart control over stopped syncs, call the sync manager’s restart method with restartStoppedSyncs set to false.

Note

iOS

Swift

1open class func getSyncsWithStatus(_ store: SmartStore, 
2                                    status: SyncStatus) -> [SyncState]

Objective-C

1+ (NSArray<SFSyncState>) getSyncsWithStatus:(SFSmartStore*)store 
2                                     status:(SFSyncStateStatus)status;

Android (Java)

1public static List<SyncState> getSyncsWithStatus(SmartStore store, Status status)

Mobile SDK Development Guide

About Sync Statuses

Getting Sync Objects by Status