| /* |
| * Copyright 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.work.worker; |
| |
| import static androidx.work.Worker.Result.SUCCESS; |
| |
| import android.support.annotation.NonNull; |
| |
| import androidx.work.Data; |
| import androidx.work.Worker; |
| import androidx.work.impl.Scheduler; |
| import androidx.work.impl.WorkManagerImpl; |
| import androidx.work.impl.model.WorkSpec; |
| |
| import java.util.List; |
| |
| public class CheckLimitsWorker extends Worker { |
| /* The limit to enforce */ |
| public static final String KEY_LIMIT_TO_ENFORCE = "limit"; |
| |
| /* The output key which tells us if we exceeded the scheduler limits. */ |
| public static final String KEY_EXCEEDS_SCHEDULER_LIMIT = "exceed_scheduler_limit"; |
| |
| @NonNull |
| @Override |
| public Result doWork() { |
| Data input = getInputData(); |
| int limitToEnforce = input.getInt(KEY_LIMIT_TO_ENFORCE, Scheduler.MAX_SCHEDULER_LIMIT); |
| WorkManagerImpl workManager = WorkManagerImpl.getInstance(); |
| List<WorkSpec> eligibleWorkSpecs = workManager.getWorkDatabase() |
| .workSpecDao() |
| .getEligibleWorkForScheduling(limitToEnforce); |
| int size = eligibleWorkSpecs != null ? eligibleWorkSpecs.size() : 0; |
| boolean exceedsLimits = size > limitToEnforce; |
| Data output = new Data.Builder() |
| .putBoolean(KEY_EXCEEDS_SCHEDULER_LIMIT, exceedsLimits) |
| .build(); |
| |
| setOutputData(output); |
| return SUCCESS; |
| } |
| } |