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    1   package org.apache.turbine.services.schedule;
    2
    3
    4   /*
    5    * Licensed to the Apache Software Foundation (ASF) under one
    6    * or more contributor license agreements.  See the NOTICE file
    7    * distributed with this work for additional information
    8    * regarding copyright ownership.  The ASF licenses this file
    9    * to you under the Apache License, Version 2.0 (the
    10   * "License"); you may not use this file except in compliance
    11   * with the License.  You may obtain a copy of the License at
    12   *
    13   *   http://www.apache.org/licenses/LICENSE-2.0
    14   *
    15   * Unless required by applicable law or agreed to in writing,
    16   * software distributed under the License is distributed on an
    17   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    18   * KIND, either express or implied.  See the License for the
    19   * specific language governing permissions and limitations
    20   * under the License.
    21   */
    22
    23
    24  import java.util.List;
    25
    26  import org.apache.turbine.services.Service;
    27  import org.apache.turbine.util.TurbineException;
    28
    29  /**
    30   * ScheduleService interface.
    31   *
    32   * @author <a href="mailto:mbryson@mont.mindspring.com">Dave Bryson</a>
    33   * @author <a href="mailto:quintonm@bellsouth.net">Quinton McCombs</a>
    34   * @version $Id: ScheduleService.java 1692651 2015-07-25 20:33:08Z tv $
    35   */
    36  public interface ScheduleService
    37          extends Service
    38  {
    39      /** Name of service */
    40      String SERVICE_NAME = "SchedulerService";
    41
    42      /** TR.props key for initially activating the scheduler thread */
    43      String INTIALLY_ACTIVE = "enabled";
    44
    45      /** TR.props key for the logger */
    46      String LOGGER_NAME = "scheduler";
    47
    48      /**
    49       * Factory method for a new Job
    50       *
    51       * Schedule a job to run on a certain point of time.<br>
    52       *
    53       * Example 1: Run the DefaultScheduledJob at 8:00am every 15th of
    54       * the month - <br>
    55       *
    56       * JobEntry je = newJob(0,0,8,-1,15,"DefaultScheduledJob");<br>
    57       *
    58       * Example 2: Run the DefaultScheduledJob at 8:00am every day -
    59       * <br>
    60       *
    61       * JobEntry je = newJob(0,0,8,-1,-1,"DefaultScheduledJob");<br>
    62       *
    63       * Example 3: Run the DefaultScheduledJob every 2 hours. - <br>
    64       *
    65       * JobEntry je = newJob(0,120,-1,-1,-1,"DefaultScheduledJob");<br>
    66       *
    67       * Example 4: Run the DefaultScheduledJob every 30 seconds. - <br>
    68       *
    69       * JobEntry je = newJob(30,-1,-1,-1,-1,"DefaultScheduledJob");<br>
    70       *
    71       * @param sec Value for entry "seconds".
    72       * @param min Value for entry "minutes".
    73       * @param hour Value for entry "hours".
    74       * @param wd Value for entry "week days".
    75       * @param day_mo Value for entry "month days".
    76       * @param task Task to execute.
    77       *
    78       * @return A JobEntry.
    79       * @exception TurbineException could not create job
    80       */
    81      JobEntry newJob(int sec,
    82              int min,
    83              int hour,
    84              int wd,
    85              int day_mo,
    86              String task) throws TurbineException;
    87
    88      /**
    89       * Get a specific Job from Storage.
    90       *
    91       * @param oid The int id for the job.
    92       * @return A JobEntry.
    93       * @exception TurbineException could not retrieve job
    94       */
    95      JobEntry getJob(int oid)
    96              throws TurbineException;
    97
    98      /**
    99       * Add a new job to the queue.
    100      *
    101      * @param je A JobEntry with the job to add.
    102      * @throws TurbineException job could not be added
    103      */
    104     void addJob(JobEntry je)
    105             throws TurbineException;
    106
    107     /**
    108      * Modify a Job.
    109      *
    110      * @param je A JobEntry with the job to modify
    111      * @throws TurbineException job could not be updated
    112      */
    113     void updateJob(JobEntry je)
    114             throws TurbineException;
    115
    116     /**
    117      * Remove a job from the queue.
    118      *
    119      * @param je A JobEntry with the job to remove.
    120      * @exception TurbineException job could not be removed
    121      */
    122     void removeJob(JobEntry je)
    123             throws TurbineException;
    124
    125     /**
    126      * List jobs in the queue.  This is used by the scheduler UI.
    127      *
    128      * @return A List of jobs.
    129      */
    130     List<? extends JobEntry> listJobs();
    131
    132     /**
    133      * Determines if the scheduler service is currently active.
    134      *
    135      * @return Status of the scheduler service.
    136      */
    137     boolean isEnabled();
    138
    139     /**
    140      * Starts the scheduler if not already running.
    141      */
    142     void startScheduler();
    143
    144     /**
    145      * Stops the scheduler if ti is currently running.
    146      */
    147     void stopScheduler();
    148
    149 }