CODEWITHSUNDEEP
androidandroid-workmanager
Hector
Hector

Reputation: 5694

androidx.work.WorkManager : What is the root cause of E/WM-EnqueueRunnable: Prerequisite ... doesn't exist; not enqueuing

I am investigating Android work manager

implementation 'android.arch.work:work-runtime:1.0.0-rc01'

My experiments all complete fine, however when I try chaining work with a unique name my logcat messages contain this

2019-02-18 11:56:37.179 11272-11288/com.chainganger E/WM-EnqueueRunnable: Prerequisite 25d3729f-a7f0-4698-b80d-0fad8b22f5fe doesn't exist; not enqueuing
2019-02-18 11:56:37.367 11272-11288/com.chainganger E/WM-EnqueueRunnable: Prerequisite 73c59e35-f349-4a4d-b46c-9757be46c63b doesn't exist; not enqueuing
2019-02-18 11:56:37.550 11272-11288/com.chainganger E/WM-EnqueueRunnable: Prerequisite a64c6e5d-cdef-477f-a677-75939c1bd083 doesn't exist; not enqueuing
2019-02-18 11:56:37.726 11272-11288/com.chainganger E/WM-EnqueueRunnable: Prerequisite 99c75815-07dd-48fb-8b02-3705b57d9008 doesn't exist; not enqueuing
2019-02-18 11:56:37.926 11272-11288/com.chainganger E/WM-EnqueueRunnable: Prerequisite 2b108a20-3c78-4201-9294-44b0f1dfdc53 doesn't exist; not enqueuing

These messages appear when I attempt to start multiple occurrences of the same Unique work

Here is my code

final OneTimeWorkRequest syncStageOne = new OneTimeWorkRequest.Builder(SyncStageOne.class).addTag(SYNC_STAGE_ONE_IN_PROGRESS_TAG).build();
final OneTimeWorkRequest syncStageTwo = new OneTimeWorkRequest.Builder(SyncStageTwo.class).addTag(SYNC_STAGE_TWO_IN_PROGRESS_TAG).build();
mWorkManager.beginUniqueWork(SYNC_CHAINED_UNIQUE_NAME, ExistingWorkPolicy.KEEP, syncStageOne).then(syncStageTwo).enqueue();

The unique work actually completes OK.

What have I done wrong to get these error messages?

Upvotes: 3

Views: 592

Answers (1)

Rahul
Rahul

Reputation: 21104

They are not really errors. You are probably trying to chain on WorkRequests which no longer exist due to a Existing{Work|PeriodicWork}Policy.REPLACE.

I would not worry about them.

Upvotes: 3

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