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There is a newer version: 6.0.2

/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * 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
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog2.periodical;

import com.google.common.collect.ImmutableSortedSet;
import org.graylog2.migrations.Migration;
import org.graylog2.plugin.periodical.Periodical;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.inject.Inject;
import java.util.Set;
import java.util.SortedSet;

public class ConfigurationManagementPeriodical extends Periodical {
    private static final Logger LOG = LoggerFactory.getLogger(ConfigurationManagementPeriodical.class);
    private final SortedSet migrations;

    @Inject
    public ConfigurationManagementPeriodical(Set migrations) {
        this.migrations = ImmutableSortedSet.copyOf(migrations);
    }

    @Override
    public void doRun() {
        for(Migration migration : migrations) {
            try {
                migration.upgrade();
            } catch (Exception e) {
                LOG.error("Error while running migration <{}>", migration, e);
            }
        }
    }

    @Override
    public boolean runsForever() {
        return true;
    }

    @Override
    public boolean stopOnGracefulShutdown() {
        return false;
    }

    @Override
    public boolean masterOnly() {
        return true;
    }

    @Override
    public boolean startOnThisNode() {
        return true;
    }

    @Override
    public boolean isDaemon() {
        return true;
    }

    @Override
    public int getInitialDelaySeconds() {
        return 0;
    }

    @Override
    public int getPeriodSeconds() {
        return 0;
    }

    @Override
    protected Logger getLogger() {
        return LOG;
    }
}