| /* |
| * 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.asterix.translator; |
| |
| import org.apache.asterix.common.api.IClientRequest; |
| import org.apache.asterix.common.api.IRequestReference; |
| import org.apache.asterix.common.api.RequestReference; |
| import org.apache.asterix.common.dataflow.ICcApplicationContext; |
| import org.apache.asterix.om.base.ADateTime; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.util.JSONUtil; |
| |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| |
| public abstract class BaseClientRequest implements IClientRequest { |
| |
| private boolean complete; |
| private final IRequestReference requestReference; |
| private boolean cancellable = false; |
| private volatile long completionTime = -1; |
| protected volatile State state = State.RECEIVED; |
| |
| public BaseClientRequest(IRequestReference requestReference) { |
| this.requestReference = requestReference; |
| } |
| |
| @Override |
| public synchronized void complete() { |
| if (complete) { |
| return; |
| } |
| complete = true; |
| state = State.COMPLETED; |
| completionTime = System.currentTimeMillis(); |
| } |
| |
| @Override |
| public synchronized void cancel(ICcApplicationContext appCtx) throws HyracksDataException { |
| if (complete) { |
| return; |
| } |
| complete(); |
| state = State.CANCELLED; |
| if (cancellable) { |
| doCancel(appCtx); |
| } |
| } |
| |
| @Override |
| public synchronized void markCancellable() { |
| cancellable = true; |
| } |
| |
| @Override |
| public synchronized boolean isCancelled() { |
| return state == State.CANCELLED; |
| } |
| |
| @Override |
| public String getId() { |
| // the uuid is generated by the node which received the request |
| // so there is a chance this might not be unique now |
| return requestReference.getUuid(); |
| } |
| |
| @Override |
| public synchronized boolean isCancellable() { |
| return cancellable; |
| } |
| |
| public void setRunning() { |
| state = State.RUNNING; |
| } |
| |
| @Override |
| public String toJson() { |
| return JSONUtil.convertNodeUnchecked(asJson()); |
| } |
| |
| protected ObjectNode asJson() { |
| ObjectNode json = JSONUtil.createObject(); |
| json.put("uuid", requestReference.getUuid()); |
| json.put("requestTime", new ADateTime(requestReference.getTime()).toSimpleString()); |
| json.put("elapsedTime", getElapsedTimeInSecs()); |
| json.put("node", requestReference.getNode()); |
| json.put("state", state.getLabel()); |
| json.put("userAgent", ((RequestReference) requestReference).getUserAgent()); |
| json.put("remoteAddr", ((RequestReference) requestReference).getRemoteAddr()); |
| json.put("cancellable", cancellable); |
| return json; |
| } |
| |
| private double getElapsedTimeInSecs() { |
| // this is just an estimation as the request might have been received on a node with a different system time |
| long runningTime = completionTime > 0 ? completionTime : System.currentTimeMillis(); |
| return (runningTime - requestReference.getTime()) / 1000d; |
| } |
| |
| protected abstract void doCancel(ICcApplicationContext appCtx) throws HyracksDataException; |
| } |