org.opencastproject.email.template.impl.EmailTemplateScanner Maven / Gradle / Ivy
/*
* Licensed to The Apereo Foundation under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
*
*
* The Apereo Foundation licenses this file to you under the Educational
* Community 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://opensource.org/licenses/ecl2.txt
*
* 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.opencastproject.email.template.impl;
import org.apache.commons.io.IOUtils;
import org.apache.felix.fileinstall.ArtifactInstaller;
import org.osgi.framework.BundleContext;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileInputStream;
import java.nio.charset.StandardCharsets;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
@Component(
immediate = true,
service = { ArtifactInstaller.class,EmailTemplateScanner.class },
property = {
"service.description=Email Template Scanner"
}
)
public class EmailTemplateScanner implements ArtifactInstaller {
/** The templates map */
private final Map templates = new ConcurrentHashMap();
/** The logging instance */
private static final Logger logger = LoggerFactory.getLogger(EmailTemplateScanner.class);
/**
* Returns the list of templates.
*
* @return the email templates
*/
public Map getTemplates() {
return templates;
}
/**
* OSGi callback on component activation.
*
* @param ctx
* the bundle context
*/
@Activate
void activate(BundleContext ctx) {
logger.info("EmailTemplateScanner activated");
}
/**
* Returns the email template for the given file name or null if no such one.
*
* @param fileName
* the template file name
* @return the email template text
*/
public String getTemplate(String fileName) {
return templates.get(fileName);
}
/**
* {@inheritDoc}
*
* @see org.apache.felix.fileinstall.ArtifactListener#canHandle(java.io.File)
*/
@Override
public boolean canHandle(File artifact) {
return "email".equals(artifact.getParentFile().getName());
}
/**
* {@inheritDoc}
*
* @see org.apache.felix.fileinstall.ArtifactInstaller#install(java.io.File)
*/
@Override
public void install(File artifact) throws Exception {
try (FileInputStream is = new FileInputStream(artifact)) {
String template = IOUtils.toString(is, StandardCharsets.UTF_8);
templates.put(artifact.getName(), template);
logger.info("Template {} installed", artifact.getName());
}
}
/**
* {@inheritDoc}
*
* @see org.apache.felix.fileinstall.ArtifactInstaller#uninstall(java.io.File)
*/
@Override
public void uninstall(File artifact) throws Exception {
for (Iterator iter = templates.values().iterator(); iter.hasNext();) {
String temp = iter.next();
if (artifact.getName().equals(temp)) {
logger.info("Uninstalling template {}", temp);
iter.remove();
}
}
}
/**
* {@inheritDoc}
*
* @see org.apache.felix.fileinstall.ArtifactInstaller#update(java.io.File)
*/
@Override
public void update(File artifact) throws Exception {
uninstall(artifact);
install(artifact);
}
}