athenz.shade.zts.org.jvnet.hk2.internal.PopulatorImpl Maven / Gradle / Ivy
/*
* Copyright (c) 2013, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package athenz.shade.zts.athenz.shade.zts.org.jvnet.hk2.internal;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.List;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.ActiveDescriptor;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.DescriptorFileFinder;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.DescriptorFileFinderInformation;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.DynamicConfiguration;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.DynamicConfigurationService;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.MultiException;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.Populator;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.PopulatorPostProcessor;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.ServiceLocator;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.utilities.ClasspathDescriptorFileFinder;
import athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.utilities.DescriptorImpl;
/**
* Implementation of the Populator for DynamicConfigurationService
*
* @author jwells
*/
public class PopulatorImpl implements Populator {
private final ServiceLocator serviceLocator;
private final DynamicConfigurationService dcs;
/* package */ PopulatorImpl(ServiceLocator serviceLocator,
DynamicConfigurationService dcs) {
this.serviceLocator = serviceLocator;
this.dcs = dcs;
}
@Override
public List> populate(DescriptorFileFinder fileFinder,
PopulatorPostProcessor... postProcessors) throws IOException {
List> descriptors = new LinkedList> ();
if (fileFinder == null) {
fileFinder = serviceLocator.getService(DescriptorFileFinder.class);
if (fileFinder == null) return descriptors;
}
if (postProcessors == null) postProcessors = new PopulatorPostProcessor[0];
List descriptorFileInputStreams;
List descriptorInformation = null;
try {
descriptorFileInputStreams = fileFinder.findDescriptorFiles();
if (fileFinder instanceof DescriptorFileFinderInformation) {
DescriptorFileFinderInformation dffi = (DescriptorFileFinderInformation) fileFinder;
descriptorInformation = dffi.getDescriptorFileInformation();
if (descriptorInformation != null &&
(descriptorInformation.size() != descriptorFileInputStreams.size())) {
throw new IOException("The DescriptorFileFinder implementation " +
fileFinder.getClass().getName() + " also implements DescriptorFileFinderInformation, " +
"however the cardinality of the list returned from getDescriptorFileInformation (" +
descriptorInformation.size() + ") does not equal the cardinality of the list " +
"returned from findDescriptorFiles (" + descriptorFileInputStreams.size() + ")");
}
}
}
catch (IOException ioe) {
throw ioe;
}
catch (Throwable th) {
throw new MultiException(th);
}
Collector collector = new Collector();
DynamicConfiguration config = dcs.createDynamicConfiguration();
int lcv = 0;
for (InputStream is : descriptorFileInputStreams) {
String identifier = (descriptorInformation == null) ? null : descriptorInformation.get(lcv) ;
lcv++;
BufferedReader br = new BufferedReader(new InputStreamReader(is));
try {
boolean readOne = false;
do {
DescriptorImpl descriptorImpl = new DescriptorImpl();
try {
readOne = descriptorImpl.readObject(br);
}
catch (IOException ioe) {
if (identifier != null) {
collector.addThrowable(new IOException("InputStream with identifier \"" + identifier + "\" failed", ioe));
}
else {
collector.addThrowable(ioe);
}
}
if (readOne) {
for (PopulatorPostProcessor pp : postProcessors) {
try {
descriptorImpl = pp.process(serviceLocator, descriptorImpl);
}
catch (Throwable th) {
if (identifier != null) {
collector.addThrowable(new IOException("InputStream with identifier \"" + identifier + "\" failed", th));
}
else {
collector.addThrowable(th);
}
descriptorImpl = null;
}
if (descriptorImpl == null) {
break;
}
}
if (descriptorImpl != null) {
descriptors.add(config.bind(descriptorImpl, false));
}
}
} while (readOne);
} finally {
br.close();
}
}
// Prior to commit!
collector.throwIfErrors();
config.commit();
return descriptors;
}
/* (non-Javadoc)
* @see athenz.shade.zts.athenz.shade.zts.org.glassfish.hk2.api.Populator#populate()
*/
@Override
public List> populate() throws IOException {
return populate(new ClasspathDescriptorFileFinder());
}
}