操作功能板

granite.maintenance.isStoppable

布尔属性，定义用户是否可以停止任务。 如果任务声明它可停止，它必须在运行期间检查它是否被停止，然后相应地操作。 默认值为false。

true

可选

granite.maintenance.mandatory

布尔属性，定义任务是否为必需任务且必须定期运行。 如果任务是强制性的，但当前不在任何活动计划窗口中，则运行状况检查会报告此错误。 默认值为false。

true

可选

granite.maintenance.name

任务的唯一名称 — 该名称用于引用任务，只是简单名称。

MyMaintenanceTask

必填

granite.maintenance.title

为此任务显示的标题

我的特别维护任务

必填

job.topics

维护任务的唯一主题。
Apache Sling作业处理将启动一个与此主题完全相同的作业来运行维护任务，当针对此主题注册任务时，该任务将运行。
主题必须以 com/adobe/granite/maintenance/job/ 开头

com/adobe/granite/maintenance/job/MyMaintenanceTask

必填

/*

* #%L

* sample-maintenance-task

* %%

* Copyright (C) 2014 Adobe

* %%

* 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

*

* https://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.

* #L%

*/

``

package com.adobe.granite.samples.maintenance.impl;

``

import java.io.File;

import java.util.Calendar;

import java.util.Collection;

import java.util.Map;

``

import org.apache.commons.io.FileUtils;

import org.apache.commons.io.filefilter.IOFileFilter;

import org.apache.commons.io.filefilter.TrueFileFilter;

import org.apache.felix.scr.annotations.Activate;

import org.apache.felix.scr.annotations.Component;

import org.apache.felix.scr.annotations.Properties;

import org.apache.felix.scr.annotations.Property;

import org.apache.felix.scr.annotations.Service;

import org.apache.sling.commons.osgi.PropertiesUtil;

import org.apache.sling.event.jobs.Job;

import org.apache.sling.event.jobs.consumer.JobConsumer;

import org.apache.sling.event.jobs.consumer.JobExecutionContext;

import org.apache.sling.event.jobs.consumer.JobExecutionResult;

import org.apache.sling.event.jobs.consumer.JobExecutor;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

``

import com.adobe.granite.maintenance.MaintenanceConstants;

``

@Component(metatype = true,

label = "Delete Temp Files Maintenance Task",

description = "Maintatence Task which deletes files from a configurable temporary directory which have been modified in the last 24 hours.")

@Service

@Properties({

@Property(name = MaintenanceConstants.PROPERTY_TASK_NAME, value = "DeleteTempFilesTask", propertyPrivate = true),

@Property(name = MaintenanceConstants.PROPERTY_TASK_TITLE, value = "Delete Temp Files", propertyPrivate = true),

@Property(name = JobConsumer.PROPERTY_TOPICS, value = MaintenanceConstants.TASK_TOPIC_PREFIX

+ "DeleteTempFilesTask", propertyPrivate = true) })

public class DeleteTempFilesTask implements JobExecutor {

``

private static final Logger log = LoggerFactory.getLogger(DeleteTempFilesTask.class);

``

@Property(label = "Temporary Directory", description="Temporary Directory. Defaults to the java.io.tmpdir system property.")

private static final String PROP_TEMP_DIR = "temp.dir";

``

private File tempDir;

``

@Activate

private void activate(Map<string, object=""> properties) {

this.tempDir = new File(PropertiesUtil.toString(properties.get(PROP_TEMP_DIR),

System.getProperty("java.io.tmpdir")));

}

``

@Override

public JobExecutionResult process(Job job, JobExecutionContext context) {

log.info("Deleting old temp files from {}.", tempDir.getAbsolutePath());

Collection<file> files = FileUtils.listFiles(tempDir, new LastModifiedBeforeYesterdayFilter(),

TrueFileFilter.INSTANCE);

int counter = 0;

for (File file : files) {

log.debug("Deleting file {}.", file.getAbsolutePath());

counter++;

file.delete();

// TODO - capture the output of delete() and do something useful with it

}

return context.result().message(String.format("Deleted %s files.", counter)).succeeded();

}

``

/**

* IOFileFilter which filters out files which have been modified in the last 24 hours.

*

*/

private static class LastModifiedBeforeYesterdayFilter implements IOFileFilter {

``

private final long minTime;

``

private LastModifiedBeforeYesterdayFilter() {

Calendar cal = Calendar.getInstance();

cal.add(Calendar.DATE, -1);

this.minTime = cal.getTimeInMillis();

}

``

@Override

public boolean accept(File dir, String name) {

// this method is never actually called.

return false;

}

``

@Override

public boolean accept(File file) {

return file.lastModified() <= this.minTime;

}

}

``

}

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