| 1 | /* |
| 2 | * Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. |
| 3 | * |
| 4 | * WSO2 Inc. licenses this file to you under the Apache License, |
| 5 | * Version 2.0 (the "License"); you may not use this file except |
| 6 | * in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, |
| 12 | * software distributed under the License is distributed on an |
| 13 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 14 | * KIND, either express or implied. See the License for the |
| 15 | * specific language governing permissions and limitations |
| 16 | * under the License. |
| 17 | */ |
| 18 | package org.wso2.siddhi.core.stream.output; |
| 19 | |
| 20 | import org.wso2.siddhi.core.event.Event; |
| 21 | import org.wso2.siddhi.core.event.StreamEvent; |
| 22 | import org.wso2.siddhi.core.event.in.InStream; |
| 23 | import org.wso2.siddhi.core.event.remove.RemoveStream; |
| 24 | import org.wso2.siddhi.core.stream.recevier.StreamReceiver; |
| 25 | import org.wso2.siddhi.core.util.SchedulerQueue; |
| 26 | |
| 27 | import java.util.Arrays; |
| 28 | import java.util.concurrent.ThreadPoolExecutor; |
| 29 | |
| 30 | public abstract class Callback implements Runnable, StreamReceiver { |
| 31 | |
| 32 | private SchedulerQueue<StreamEvent> inputQueue = new SchedulerQueue<StreamEvent>(); |
| 33 | private ThreadPoolExecutor threadPoolExecutor; |
| 34 | private String streamId; |
| 35 | |
| 36 | public void setThreadPoolExecutor(ThreadPoolExecutor threadPoolExecutor) { |
| 37 | this.threadPoolExecutor = threadPoolExecutor; |
| 38 | } |
| 39 | |
| 40 | public String toString(long timeStamp, Object[] newEventData, Object[] removeEventData, |
| 41 | Object[] faultEventData) { |
| 42 | String value = "Events{" + |
| 43 | " @timeStamp=" + timeStamp + |
| 44 | ", newEventData="; |
| 45 | if (newEventData == null) { |
| 46 | value += null; |
| 47 | } else { |
| 48 | for (Object data : newEventData) { |
| 49 | value += Arrays.asList((Object[]) data).toString(); |
| 50 | } |
| 51 | } |
| 52 | value += ", removeEventData="; |
| 53 | if (removeEventData == null) { |
| 54 | value += null; |
| 55 | } else { |
| 56 | for (Object data : removeEventData) { |
| 57 | value += Arrays.asList((Object[]) data).toString(); |
| 58 | } |
| 59 | } |
| 60 | value += ", faultEventData="; |
| 61 | if (faultEventData == null) { |
| 62 | value += null; |
| 63 | } else { |
| 64 | for (Object data : faultEventData) { |
| 65 | value += Arrays.asList((Object[]) data).toString(); |
| 66 | } |
| 67 | } |
| 68 | value += '}'; |
| 69 | return value; |
| 70 | } |
| 71 | |
| 72 | public Object getData(Object[] eventData, int eventPosition, int dataPosition) { |
| 73 | return ((Object[]) eventData[eventPosition])[dataPosition]; |
| 74 | } |
| 75 | |
| 76 | public void receive(StreamEvent event) throws InterruptedException { |
| 77 | if (!inputQueue.put(event)) { |
| 78 | threadPoolExecutor.submit(this); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public void run() { |
| 84 | int eventCounter = 0; |
| 85 | while (true) { |
| 86 | StreamEvent event = inputQueue.poll(); |
| 87 | if (event == null) { |
| 88 | break; |
| 89 | } else if (eventCounter > 10) { |
| 90 | threadPoolExecutor.submit(this); |
| 91 | break; |
| 92 | } |
| 93 | if (event instanceof Event) { |
| 94 | try { |
| 95 | if (event instanceof InStream) { |
| 96 | receive(event.getTimeStamp(), new Object[]{((Event) event).getData()}, null, null); |
| 97 | } else if (event instanceof RemoveStream) { |
| 98 | receive(event.getTimeStamp(), null, new Object[]{((Event) event).getData()}, null); |
| 99 | } |
| 100 | } catch (Throwable e) { |
| 101 | e.printStackTrace(); |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | public abstract void receive(long timeStamp, Object[] newEventData, |
| 108 | Object[] removeEventData, Object[] faultEventData); |
| 109 | |
| 110 | public void setStreamId(String streamId) { |
| 111 | this.streamId = streamId; |
| 112 | } |
| 113 | |
| 114 | public String getStreamId() { |
| 115 | return streamId; |
| 116 | } |
| 117 | } |