/**
* 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.oodt.pcs.services;
//JDK imports
import java.net.MalformedURLException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Vector;
//JAX-RS imports
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
//JSON imports
import net.sf.json.JSONObject;
//OODT imports
import org.apache.oodt.pcs.pedigree.Pedigree;
import org.apache.oodt.pcs.pedigree.PedigreeTree;
import org.apache.oodt.pcs.pedigree.PedigreeTreeNode;
import org.apache.oodt.pcs.util.FileManagerUtils;
/**
*
* Exposes the {@link Pedigree} API of the PCS to provide an upstream and
* downstream lineage of a particular OODT {@link Product} using JAX-RS.
*
* @author mattmann
* @version $Revision$
*
*/
@Path("pedigree")
public class PedigreeResource extends PCSService {
private static final long serialVersionUID = 4851623546718112205L;
private Pedigree trace;
private FileManagerUtils fm;
public PedigreeResource() throws MalformedURLException {
this.fm = new FileManagerUtils(PCSService.conf.getFmUrl());
this.trace = new Pedigree(this.fm, PCSService.conf
.isTraceNotCatalogedFiles(), Arrays.asList(PCSService.conf
.getTraceProductTypeExcludeList().split(",")));
}
@GET
@Path("report/{filename}")
@Produces("text/plain")
public String generatePedigree(@PathParam("filename") String filename) {
PedigreeTree upstreamTree = this.trace.doPedigree(this.fm
.safeGetProductByName(filename), true);
PedigreeTree downstreamTree = this.trace.doPedigree(this.fm
.safeGetProductByName(filename), false);
return this.encodePedigreeAsJson(upstreamTree, downstreamTree);
}
@GET
@Path("report/{filename}/upstream")
@Produces("text/plain")
public String generateUpstreamPedigree(@PathParam("filename") String filename) {
PedigreeTree upstreamTree = this.trace.doPedigree(this.fm
.safeGetProductByName(filename), true);
return this.encodePedigreeAsJson(upstreamTree, null);
}
@GET
@Path("report/{filename}/downstream")
@Produces("text/plain")
public String generateDownstreamPedigree(
@PathParam("filename") String filename) {
PedigreeTree downstreamTree = this.trace.doPedigree(this.fm
.safeGetProductByName(filename), false);
return this.encodePedigreeAsJson(null, downstreamTree);
}
private String encodePedigreeAsJson(PedigreeTree up, PedigreeTree down) {
Map<String, Object> output = new HashMap<String, Object>();
if (up != null)
output.put("upstream", this.encodePedigreeTreeAsJson(up.getRoot()));
if (down != null)
output.put("downstream", this.encodePedigreeTreeAsJson(down.getRoot()));
JSONObject json = new JSONObject();
json.put("pedigree", output);
return json.toString();
}
private Object encodePedigreeTreeAsJson(PedigreeTreeNode node) {
if (node.getNumChildren() > 0) {
Map<String, Object> map = new HashMap<String, Object>();
List<Object> list = new Vector<Object>();
for (int i = 0; i < node.getNumChildren(); i++) {
list.add(this
.encodePedigreeTreeAsJson(node.getChildAt(i)));
}
map.put(node.getNodeProduct().getProductName(), list);
return map;
} else {
return node.getNodeProduct().getProductName();
}
}
}