001/*-
002 * #%L
003 * HAPI FHIR JPA Server
004 * %%
005 * Copyright (C) 2014 - 2024 Smile CDR, Inc.
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 *
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020package ca.uhn.fhir.jpa.search;
021
022import ca.uhn.fhir.jpa.api.svc.ISearchUrlJobMaintenanceSvc;
023import ca.uhn.fhir.jpa.model.sched.HapiJob;
024import ca.uhn.fhir.jpa.model.sched.IHasScheduledJobs;
025import ca.uhn.fhir.jpa.model.sched.ISchedulerService;
026import ca.uhn.fhir.jpa.model.sched.ScheduledJobDefinition;
027import org.apache.commons.lang3.time.DateUtils;
028import org.quartz.JobExecutionContext;
029import org.quartz.JobExecutionException;
030import org.springframework.beans.factory.annotation.Autowired;
031
032import java.util.Date;
033
034/**
035 * The purpose of this service is to define and register a job that will clean up
036 * entries created by an instance of {@link ResourceSearchUrlSvc}.
037 */
038public class SearchUrlJobMaintenanceSvcImpl implements ISearchUrlJobMaintenanceSvc, IHasScheduledJobs {
039
040        private ResourceSearchUrlSvc myResourceSearchUrlSvc;
041
042        /**
043         * An hour at 3k resources/second is ~10M resources.  That's easy to manage with deletes by age.
044         * We can shorten this if we have memory or storage pressure.  MUST be longer that longest transaction
045         * possible to work.
046         */
047        public static final long OUR_CUTOFF_IN_MILLISECONDS = 1 * DateUtils.MILLIS_PER_HOUR;
048
049        public SearchUrlJobMaintenanceSvcImpl(ResourceSearchUrlSvc theResourceSearchUrlSvc) {
050                myResourceSearchUrlSvc = theResourceSearchUrlSvc;
051        }
052
053        @Override
054        public void removeStaleEntries() {
055                final Date cutoffDate = calculateCutoffDate();
056                myResourceSearchUrlSvc.deleteEntriesOlderThan(cutoffDate);
057        }
058
059        @Override
060        public void scheduleJobs(ISchedulerService theSchedulerService) {
061                ScheduledJobDefinition jobDetail = new ScheduledJobDefinition();
062                jobDetail.setId(SearchUrlMaintenanceJob.class.getName());
063                jobDetail.setJobClass(SearchUrlMaintenanceJob.class);
064                theSchedulerService.scheduleClusteredJob(10 * DateUtils.MILLIS_PER_MINUTE, jobDetail);
065        }
066
067        private Date calculateCutoffDate() {
068                return new Date(System.currentTimeMillis() - OUR_CUTOFF_IN_MILLISECONDS);
069        }
070
071        public static class SearchUrlMaintenanceJob implements HapiJob {
072
073                @Autowired
074                private ISearchUrlJobMaintenanceSvc mySearchUrlJobMaintenanceSvc;
075
076                @Override
077                public void execute(JobExecutionContext theJobExecutionContext) throws JobExecutionException {
078                        mySearchUrlJobMaintenanceSvc.removeStaleEntries();
079                }
080        }
081}