| /* |
| * 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.interpreter.remote; |
| |
| import java.util.List; |
| |
| import org.apache.thrift.TException; |
| import org.apache.zeppelin.display.AngularObject; |
| import org.apache.zeppelin.display.AngularObjectRegistry; |
| import org.apache.zeppelin.display.AngularObjectRegistryListener; |
| import org.apache.zeppelin.interpreter.InterpreterGroup; |
| import org.apache.zeppelin.interpreter.thrift.RemoteInterpreterService.Client; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.gson.Gson; |
| |
| /** |
| * Proxy for AngularObjectRegistry that exists in remote interpreter process |
| */ |
| public class RemoteAngularObjectRegistry extends AngularObjectRegistry { |
| Logger logger = LoggerFactory.getLogger(RemoteAngularObjectRegistry.class); |
| private InterpreterGroup interpreterGroup; |
| |
| public RemoteAngularObjectRegistry(String interpreterId, |
| AngularObjectRegistryListener listener, |
| InterpreterGroup interpreterGroup) { |
| super(interpreterId, listener); |
| this.interpreterGroup = interpreterGroup; |
| } |
| |
| private RemoteInterpreterProcess getRemoteInterpreterProcess() { |
| return interpreterGroup.getRemoteInterpreterProcess(); |
| } |
| |
| /** |
| * When ZeppelinServer side code want to add angularObject to the registry, |
| * this method should be used instead of add() |
| * @param name |
| * @param o |
| * @param noteId |
| * @return |
| */ |
| public AngularObject addAndNotifyRemoteProcess(String name, Object o, String noteId, String |
| paragraphId) { |
| Gson gson = new Gson(); |
| RemoteInterpreterProcess remoteInterpreterProcess = getRemoteInterpreterProcess(); |
| if (!remoteInterpreterProcess.isRunning()) { |
| return super.add(name, o, noteId, paragraphId, true); |
| } |
| |
| Client client = null; |
| boolean broken = false; |
| try { |
| client = remoteInterpreterProcess.getClient(); |
| client.angularObjectAdd(name, noteId, paragraphId, gson.toJson(o)); |
| return super.add(name, o, noteId, paragraphId, true); |
| } catch (TException e) { |
| broken = true; |
| logger.error("Error", e); |
| } catch (Exception e) { |
| logger.error("Error", e); |
| } finally { |
| if (client != null) { |
| remoteInterpreterProcess.releaseClient(client, broken); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * When ZeppelinServer side code want to remove angularObject from the registry, |
| * this method should be used instead of remove() |
| * @param name |
| * @param noteId |
| * @param paragraphId |
| * @return |
| */ |
| public AngularObject removeAndNotifyRemoteProcess(String name, String noteId, String |
| paragraphId) { |
| RemoteInterpreterProcess remoteInterpreterProcess = getRemoteInterpreterProcess(); |
| if (remoteInterpreterProcess == null || !remoteInterpreterProcess.isRunning()) { |
| return super.remove(name, noteId, paragraphId); |
| } |
| |
| Client client = null; |
| boolean broken = false; |
| try { |
| client = remoteInterpreterProcess.getClient(); |
| client.angularObjectRemove(name, noteId, paragraphId); |
| return super.remove(name, noteId, paragraphId); |
| } catch (TException e) { |
| broken = true; |
| logger.error("Error", e); |
| } catch (Exception e) { |
| logger.error("Error", e); |
| } finally { |
| if (client != null) { |
| remoteInterpreterProcess.releaseClient(client, broken); |
| } |
| } |
| return null; |
| } |
| |
| public void removeAllAndNotifyRemoteProcess(String noteId, String paragraphId) { |
| List<AngularObject> all = getAll(noteId, paragraphId); |
| for (AngularObject ao : all) { |
| removeAndNotifyRemoteProcess(ao.getName(), noteId, paragraphId); |
| } |
| } |
| |
| @Override |
| protected AngularObject createNewAngularObject(String name, Object o, String noteId, String |
| paragraphId) { |
| return new RemoteAngularObject(name, o, noteId, paragraphId, interpreterGroup, |
| getAngularObjectListener()); |
| } |
| } |