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/*
 * Copyright 2014-2016 Red Hat, Inc, and individual contributors.
 *
 * 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 org.projectodd.wunderboss.scheduling;

import org.projectodd.wunderboss.Component;
import org.projectodd.wunderboss.Option;

import java.util.Map;
import java.util.Set;

public interface Scheduling extends Component {
    class CreateOption extends Option {
        public static final CreateOption NUM_THREADS = opt("num_threads", 5, CreateOption.class);
    }

    class ScheduleOption extends Option {
        public static final ScheduleOption CRON                  = opt("cron", ScheduleOption.class);
        public static final ScheduleOption AT                    = opt("at", ScheduleOption.class);
        public static final ScheduleOption EVERY                 = opt("every", ScheduleOption.class);
        public static final ScheduleOption IN                    = opt("in", ScheduleOption.class);
        public static final ScheduleOption LIMIT                 = opt("limit", ScheduleOption.class);
        public static final ScheduleOption UNTIL                 = opt("until", ScheduleOption.class);
        public static final ScheduleOption SINGLETON             = opt("singleton", true, ScheduleOption.class);
        public static final ScheduleOption ALLOW_CONCURRENT_EXEC = opt("allow_concurrent_exec", true, ScheduleOption.class);
    }

    /**
     *
     * @param name
     * @param lambda
     * @param options cron - String
     *                at - java.util.Date
     *                every - ms
     *                in - ms
     *                limit - int
     *                until - java.util.Date
     *                singleton
     * @return true if schedule replaced a job with the same name, throws on failure
     */
    boolean schedule(String name, Runnable lambda, Map options) throws Exception;

    /**
     *
     * @param name
     * @return true if the job exists
     */
    boolean unschedule(String name) throws Exception;


    Set scheduledJobs();
}