/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. 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.
*/
package org.apache.sling.installer.core.impl;
import java.util.HashMap;
import java.util.Map;
import org.apache.sling.installer.api.InstallableResource;
import org.apache.sling.installer.api.ResourceChangeListener;
import org.apache.sling.installer.api.tasks.RegisteredResource;
import org.apache.sling.installer.api.tasks.ResourceTransformer;
import org.apache.sling.installer.api.tasks.RetryHandler;
import org.apache.sling.installer.api.tasks.TransformationResult;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.Version;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The default transformer transforms:
* - file resources containing a bundle into OSGI bundle resources
*/
public class DefaultTransformer
implements InternalService, ResourceTransformer {
/** Logger */
private final Logger logger = LoggerFactory.getLogger(this.getClass());
/**
* @see org.apache.sling.installer.core.impl.InternalService#init(org.osgi.framework.BundleContext, org.apache.sling.installer.api.ResourceChangeListener, RetryHandler)
*/
public void init(final BundleContext bctx, final ResourceChangeListener rcl, RetryHandler retryHandler) {
// nothing to do
}
/**
* @see org.apache.sling.installer.core.impl.InternalService#deactivate()
*/
public void deactivate() {
// nothing to do
}
/**
* @see org.apache.sling.installer.core.impl.InternalService#getDescription()
*/
public String getDescription() {
return "Apache Sling Installer - Default Resource Transformer";
}
/**
* @see org.apache.sling.installer.api.tasks.ResourceTransformer#transform(org.apache.sling.installer.api.tasks.RegisteredResource)
*/
public TransformationResult[] transform(final RegisteredResource resource) {
if ( resource.getType().equals(InstallableResource.TYPE_FILE) ) {
return checkBundle(resource);
}
return null;
}
/**
* Check if the registered resource is a bundle.
* @return
*/
private TransformationResult[] checkBundle(final RegisteredResource resource) {
final Util.BundleHeaders headers = Util.readBundleHeaders(resource, logger);
if ( headers != null ) {
// check the version for validity
boolean validVersion = true;
try {
new Version(headers.version);
} catch (final IllegalArgumentException iae) {
logger.info("Rejecting bundle {} from {} due to invalid version information: {}.",
new Object[] {headers.symbolicName, resource, headers.version});
validVersion = false;
}
if ( validVersion ) {
final Map<String, Object> attr = new HashMap<String, Object>();
attr.put(Constants.BUNDLE_SYMBOLICNAME, headers.symbolicName);
attr.put(Constants.BUNDLE_VERSION, headers.version);
// check for activation policy
if ( headers.activationPolicy != null ) {
attr.put(Constants.BUNDLE_ACTIVATIONPOLICY, headers.activationPolicy);
}
final TransformationResult tr = new TransformationResult();
tr.setId(headers.symbolicName);
tr.setResourceType(InstallableResource.TYPE_BUNDLE);
tr.setAttributes(attr);
return new TransformationResult[] {tr};
}
}
return null;
}
}