Code for the Medium article: "Customizing WorkManager"

ConferenceDataWorker.kt

/* Copyright 2019 Google LLC.	
   SPDX-License-Identifier: Apache-2.0 */
/**
 * A Job that refreshes the conference data in the repository (if the app is active) and
 * in the cache (if the app is not active).
 */
class ConferenceDataWorker(
    ctx: Context,
    params: WorkerParameters,
    private val refreshEventDataUseCase: RefreshConferenceDataUseCase
) : CoroutineWorker(ctx, params) {

    override suspend fun doWork(): Result {

        Timber.i("ConferenceDataService triggering refresh conference data.")

        return try {
            refreshEventDataUseCase(Unit)
            Timber.d("ConferenceDataService finished successfully.")
            // Finishing indicating this job doesn't need to be rescheduled.
            Result.success()
        } catch (e: Exception) {
            Timber.e("ConferenceDataService failed. It will retry.")
            // Indicating worker should be retried
            if (runAttemptCount < MAX_NUMBER_OF_RETRY) {
                Result.retry()
            } else {
                Result.failure()
            }
        }
    }
}