ca.uhn.fhir.jpa.search.StaleSearchDeletingSvc.java Source code

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Here is the source code for ca.uhn.fhir.jpa.search.StaleSearchDeletingSvc.java

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package ca.uhn.fhir.jpa.search;

/*
 * #%L
 * HAPI FHIR JPA Server
 * %%
 * Copyright (C) 2014 - 2016 University Health Network
 * %%
 * 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.
 * #L%
 */

import java.util.Collection;
import java.util.Date;

import org.apache.commons.lang3.time.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.transaction.support.TransactionCallbackWithoutResult;
import org.springframework.transaction.support.TransactionTemplate;

import ca.uhn.fhir.jpa.dao.DaoConfig;
import ca.uhn.fhir.jpa.dao.data.ISearchDao;
import ca.uhn.fhir.jpa.dao.data.ISearchIncludeDao;
import ca.uhn.fhir.jpa.dao.data.ISearchResultDao;
import ca.uhn.fhir.jpa.entity.Search;

/**
 * Deletes old searches
 */
public class StaleSearchDeletingSvc {
    private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(StaleSearchDeletingSvc.class);

    @Autowired
    private ISearchDao mySearchDao;

    @Autowired
    private DaoConfig myDaoConfig;

    @Autowired
    private ISearchResultDao mySearchResultDao;

    @Autowired
    private ISearchIncludeDao mySearchIncludeDao;

    @Autowired
    private PlatformTransactionManager myTransactionManager;

    @Scheduled(fixedDelay = 10 * DateUtils.MILLIS_PER_SECOND)
    @Transactional(propagation = Propagation.NOT_SUPPORTED)
    public synchronized void pollForStaleSearches() {
        Date cutoff = new Date(System.currentTimeMillis() - myDaoConfig.getExpireSearchResultsAfterMillis());
        ourLog.debug("Searching for searches which are before {}", cutoff);

        Collection<Search> toDelete = mySearchDao.findWhereCreatedBefore(cutoff);
        if (toDelete.isEmpty()) {
            return;
        }

        TransactionTemplate tt = new TransactionTemplate(myTransactionManager);
        for (final Search next : toDelete) {
            tt.execute(new TransactionCallbackWithoutResult() {
                @Override
                protected void doInTransactionWithoutResult(TransactionStatus theArg0) {
                    Search searchToDelete = mySearchDao.findOne(next.getId());
                    ourLog.info("Expiring stale search {} / {}", searchToDelete.getId(), searchToDelete.getUuid());
                    mySearchIncludeDao.deleteForSearch(searchToDelete.getId());
                    mySearchResultDao.deleteForSearch(searchToDelete.getId());
                    mySearchDao.delete(searchToDelete);
                }
            });
        }

        ourLog.info("Deleted {} searches, {} remaining", toDelete.size(), mySearchDao.count());

    }

}