fr.gael.dhus.service.EvictionService.java Source code

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Here is the source code for fr.gael.dhus.service.EvictionService.java

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/*
 * Data Hub Service (DHuS) - For Space data distribution.
 * Copyright (C) 2013,2014,2015 GAEL Systems
 *
 * This file is part of DHuS software sources.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package fr.gael.dhus.service;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.joda.time.DateTime;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import fr.gael.dhus.database.dao.ProductDao;
import fr.gael.dhus.database.dao.interfaces.IEvictionDao;
import fr.gael.dhus.database.object.Eviction;
import fr.gael.dhus.database.object.Product;
import fr.gael.dhus.datastore.eviction.EvictionManager;
import fr.gael.dhus.datastore.eviction.EvictionStrategy;

@Service
public class EvictionService extends WebService {
    @Autowired
    private EvictionManager evictionMgr;

    @Autowired
    private IEvictionDao evictionDao;

    @Autowired
    private ProductDao productDao;

    @PreAuthorize("hasRole('ROLE_SYSTEM_MANAGER')")
    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public int getKeepPeriod() {
        return evictionDao.getEviction().getKeepPeriod();
    }

    @PreAuthorize("hasRole('ROLE_SYSTEM_MANAGER')")
    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public int getMaxDiskUsage() {
        return evictionDao.getEviction().getMaxDiskUsage();
    }

    @PreAuthorize("hasRole('ROLE_SYSTEM_MANAGER')")
    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public EvictionStrategy getStrategy() {
        return evictionDao.getEviction().getStrategy();
    }

    @PreAuthorize("hasRole('ROLE_SYSTEM_MANAGER')")
    @Transactional(readOnly = false, propagation = Propagation.REQUIRED)
    public void save(EvictionStrategy strategy, int keep_period, int max_disk_usage) {
        evictionDao.update(strategy, keep_period, max_disk_usage);
        evictionMgr.computeNextProducts();
    }

    @PreAuthorize("hasRole('ROLE_SYSTEM_MANAGER')")
    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    public List<Product> getEvictableProducts() {
        return new ArrayList<>(evictionMgr.getProducts());
    }

    @PreAuthorize("hasRole('ROLE_SYSTEM_MANAGER')")
    @Transactional(readOnly = false, propagation = Propagation.REQUIRED)
    public void doEvict() {
        evictionMgr.doEvict();
    }

    @PreAuthorize("isAuthenticated ()")
    @Transactional(readOnly = true, propagation = Propagation.REQUIRED)
    @Cacheable(value = "product_eviction_date", key = "#pid")
    public Date getEvictionDate(Long pid) {
        Eviction eviction = evictionDao.getEviction();
        if (eviction.getStrategy() == EvictionStrategy.NONE) {
            return null;
        }
        Product p = productDao.read(pid);
        DateTime dt = new DateTime(p.getIngestionDate());
        DateTime res = dt.plusDays(eviction.getKeepPeriod());
        return res.toDate();
    }

    // Methods for unit tests
    void setEvictionDao(IEvictionDao eviction_dao) {
        this.evictionDao = eviction_dao;
    }

    void setEvictionMgr(EvictionManager eviction_mgr) {
        this.evictionMgr = eviction_mgr;
    }
}