| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. The ASF licenses this file to You |
| * 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. For additional information regarding |
| * copyright in this work, please see the NOTICE file in the top level |
| * directory of this distribution. |
| */ |
| |
| package org.apache.roller.weblogger.pojos; |
| |
| import java.io.Serializable; |
| import java.util.Calendar; |
| import java.util.Date; |
| import org.apache.roller.util.UUIDGenerator; |
| |
| |
| /** |
| * Represents locking information about a specific RollerTask. |
| */ |
| public class TaskLock implements Serializable { |
| |
| private String id = UUIDGenerator.generateUUID(); |
| private String name = null; |
| private Date timeAcquired = null; |
| private int timeLeased = 0; |
| private Date lastRun = null; |
| private String clientId = null; |
| |
| |
| public TaskLock() {} |
| |
| |
| /** |
| * Calculate the next allowed time this task is allowed to run allowed to run. |
| * i.e. lastRun + interval |
| */ |
| public Date getNextAllowedRun(int interval) { |
| |
| Date previousRun = getLastRun(); |
| if(previousRun == null) { |
| return new Date(0); |
| } |
| |
| // calculate next run time |
| Calendar cal = Calendar.getInstance(); |
| cal.setTime(previousRun); |
| cal.add(Calendar.MINUTE, interval); |
| |
| return cal.getTime(); |
| } |
| |
| |
| /** |
| * Get the time the last/current lease for this lock expires. |
| * |
| * expireTime = timeAcquired + (timeLeased * 60sec/min) - 1 sec |
| * we remove 1 second to adjust for precision differences |
| */ |
| public Date getLeaseExpiration() { |
| |
| Date leaseAcquisitionTime = new Date(0); |
| if(getTimeAcquired() != null) { |
| leaseAcquisitionTime = getTimeAcquired(); |
| } |
| |
| // calculate lease expiration time |
| Calendar cal = Calendar.getInstance(); |
| cal.setTime(leaseAcquisitionTime); |
| cal.add(Calendar.MINUTE, getTimeLeased()); |
| |
| return cal.getTime(); |
| } |
| |
| //------------------------------------------------------- Good citizenship |
| |
| @Override |
| public String toString() { |
| StringBuilder buf = new StringBuilder(); |
| buf.append("{"); |
| buf.append(getId()); |
| buf.append(", ").append(getName()); |
| buf.append(", ").append(getTimeAcquired()); |
| buf.append(", ").append(getTimeLeased()); |
| buf.append("}"); |
| return buf.toString(); |
| } |
| |
| @Override |
| public boolean equals(Object other) { |
| |
| if(this == other) { |
| return true; |
| } |
| if( !(other instanceof TaskLock) ) { |
| return false; |
| } |
| // our natural key, or business key, is our name |
| final TaskLock that = (TaskLock) other; |
| return this.getName().equals(that.getName()); |
| } |
| |
| @Override |
| public int hashCode() { |
| // our natural key, or business key, is our name |
| return this.getName().hashCode(); |
| } |
| |
| |
| public String getId() { |
| return id; |
| } |
| |
| public void setId(String id) { |
| this.id = id; |
| } |
| |
| |
| public String getName() { |
| return name; |
| } |
| |
| public void setName(String name) { |
| this.name = name; |
| } |
| |
| |
| public Date getTimeAcquired() { |
| return timeAcquired; |
| } |
| |
| public void setTimeAcquired(Date timeAcquired) { |
| this.timeAcquired = timeAcquired; |
| } |
| |
| |
| public Date getLastRun() { |
| return lastRun; |
| } |
| |
| public void setLastRun(Date lastRun) { |
| this.lastRun = lastRun; |
| } |
| |
| |
| public int getTimeLeased() { |
| return timeLeased; |
| } |
| |
| public void setTimeLeased(int timeLeased) { |
| this.timeLeased = timeLeased; |
| } |
| |
| |
| public String getClientId() { |
| return clientId; |
| } |
| |
| public void setClientId(String clientId) { |
| this.clientId = clientId; |
| } |
| |
| } |