org.apache.zeppelin.socket.NotebookWebSocketCreator Maven / Gradle / Ivy
/*
* 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.zeppelin.socket;
import org.eclipse.jetty.websocket.servlet.ServletUpgradeRequest;
import org.eclipse.jetty.websocket.servlet.ServletUpgradeResponse;
import org.eclipse.jetty.websocket.servlet.WebSocketCreator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.zeppelin.conf.ZeppelinConfiguration.ConfVars.ZEPPELIN_ALLOWED_ORIGINS;
/**
* Responsible to create the WebSockets for the NotebookServer.
*/
public class NotebookWebSocketCreator implements WebSocketCreator {
private static final Logger LOG = LoggerFactory.getLogger(NotebookWebSocketCreator.class);
private NotebookServer notebookServer;
public NotebookWebSocketCreator(NotebookServer notebookServer) {
this.notebookServer = notebookServer;
}
public Object createWebSocket(ServletUpgradeRequest request, ServletUpgradeResponse response) {
String origin = request.getHeader("Origin");
if (notebookServer.checkOrigin(request.getHttpServletRequest(), origin)) {
return new NotebookSocket(request.getHttpServletRequest(), "", notebookServer);
} else {
LOG.error("Websocket request is not allowed by {} settings. Origin: {}",
ZEPPELIN_ALLOWED_ORIGINS, origin);
return null;
}
}
}