org.graylog2.jersey.PrefixAddingModelProcessor Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog2.jersey;
import com.google.common.collect.ImmutableMap;
import org.glassfish.jersey.server.model.ModelProcessor;
import org.glassfish.jersey.server.model.Resource;
import org.glassfish.jersey.server.model.ResourceModel;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.ext.Provider;
import java.util.Map;
import java.util.Optional;
@Provider
public class PrefixAddingModelProcessor implements ModelProcessor {
private final Map packagePrefixes;
public PrefixAddingModelProcessor(Map packagePrefixes) {
this.packagePrefixes = ImmutableMap.copyOf(packagePrefixes);
}
@Override
public ResourceModel processResourceModel(ResourceModel model, Configuration config) {
// Create new resource model.
final ResourceModel.Builder resourceModelBuilder = new ResourceModel.Builder(false);
for (final Resource resource : model.getResources()) {
for (Class handlerClass : resource.getHandlerClasses()) {
final String packageName = handlerClass.getPackage().getName();
final Optional packagePrefix = packagePrefixes.entrySet().stream()
.filter(entry -> packageName.startsWith(entry.getKey()))
.sorted((o1, o2) -> -o1.getKey().compareTo(o2.getKey()))
.map(Map.Entry::getValue)
.findFirst();
if (packagePrefix.isPresent()) {
final String prefixedPath = prefixPath(packagePrefix.get(), resource.getPath());
final Resource newResource = Resource.builder(resource)
.path(prefixedPath)
.build();
resourceModelBuilder.addResource(newResource);
} else {
resourceModelBuilder.addResource(resource);
}
}
}
return resourceModelBuilder.build();
}
private String prefixPath(String prefix, String path) {
final String sanitizedPrefix = prefix.endsWith("/") ? prefix : prefix + "/";
final String sanitizedPath = path.startsWith("/") ? path.substring(1) : path;
return sanitizedPrefix + sanitizedPath;
}
@Override
public ResourceModel processSubResource(ResourceModel model, Configuration config) {
return model;
}
}