/**
* 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.ambari.server.api.resources;
import java.util.Arrays;
import java.util.List;
import org.apache.ambari.server.api.services.Request;
import org.apache.ambari.server.api.util.TreeNode;
import org.apache.ambari.server.controller.internal.RequestResourceProvider;
import org.apache.ambari.server.controller.spi.Resource;
/**
* Request resource definition.
*/
public class RequestResourceDefinition extends BaseResourceDefinition {
/**
* Constructor.
*/
public RequestResourceDefinition() {
super(Resource.Type.Request, Resource.Type.Stage, Resource.Type.Task);
}
@Override
public String getPluralName() {
return "requests";
}
@Override
public String getSingularName() {
return "request";
}
@Override
public List<PostProcessor> getPostProcessors() {
return Arrays.asList(new RequestHrefPostProcessor(), new RequestSourceScheduleHrefPostProcessor());
}
private class RequestHrefPostProcessor implements PostProcessor {
@Override
public void process(Request request, TreeNode<Resource> resultNode,
String href) {
Object requestId = resultNode.getObject().getPropertyValue(
getClusterController().getSchema(Resource.Type.Request)
.getKeyPropertyId(Resource.Type.Request));
// sanity check for a trailing slash since this would cause problems
// with string-based URL matching
if (href.endsWith("/")) {
href = href.substring(0, href.length() - 1);
}
// if the original href was for a "request", then shortcut and just
// append the ID onto the URL
StringBuilder sb = new StringBuilder();
if (href.endsWith("/requests")) {
sb.append(href);
sb.append('/').append(requestId);
} else {
// split the href up into its parts, intercepting "clusters" in order
// to rewrite the href to be scoped for requests
String[] tokens = href.split("/");
Integer tokenCount = tokens.length;
for (int i = 0; i < tokenCount; ++i) {
String fragment = tokens[i];
sb.append(fragment);
if (i < tokenCount - 1 ) {
sb.append('/');
}
if ("clusters".equals(fragment) && i + 1 < tokenCount) {
String clusterName = getClusterName(tokens[i + 1]);
sb.append(clusterName).append("/");
sb.append("requests/").append(requestId);
break;
}
}
}
resultNode.setProperty("href", sb.toString());
}
/**
* Get cluster name
* Remove query paramter string if there is any
*
* @param token
* @return String
* */
private String getClusterName(String token){
int pos = token.indexOf('?');
if(pos > 0) { //cluster name requires to have at least one alphanumeric letter
return token.substring(0, pos);
} else {
return token;
}
}
}
private class RequestSourceScheduleHrefPostProcessor implements PostProcessor {
@Override
public void process(Request request, TreeNode<Resource> resultNode, String href) {
StringBuilder sb = new StringBuilder();
String[] toks = href.split("/");
for (int i = 0; i < toks.length; ++i) {
String s = toks[i];
sb.append(s).append('/');
if ("clusters".equals(s)) {
sb.append(toks[i + 1]).append('/');
break;
}
}
Object scheduleId = resultNode.getObject().getPropertyValue(RequestResourceProvider.REQUEST_SOURCE_SCHEDULE_ID);
if (scheduleId != null) {
sb.append("request_schedules/").append(scheduleId);
resultNode.getObject().setProperty(RequestResourceProvider.REQUEST_SOURCE_SCHEDULE_HREF, sb.toString());
}
}
}
}