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| 0b055a | 1 | package com.hz.canal.starter.container; |
| R | 2 | |
| 3 | import com.alibaba.otter.canal.protocol.CanalEntry; | |
| 4 | import com.hz.canal.starter.listener.ApplicationReadyListener; | |
| 5 | import org.springframework.context.SmartLifecycle; | |
| 6 | ||
| 7 | import java.util.Arrays; | |
| 8 | import java.util.List; | |
| 9 | import java.util.concurrent.TimeUnit; | |
| 10 | ||
| 11 | /** | |
| 12 | * 抽象的canal transponder ,实现SmartLifecycle接口,声明周期由spring进行管理 | |
| 13 | * | |
| 14 | * @author wuqiong 2022/4/11 | |
| 15 | */ | |
| 16 | public abstract class AbstractCanalTransponderContainer implements SmartLifecycle { | |
| 17 | protected boolean isRunning = false; | |
| 18 | protected final Long SLEEP_TIME_MILLI_SECONDS = 1000L; | |
| 19 | protected List<CanalEntry.EntryType> IGNORE_ENTRY_TYPES = | |
| 20 | Arrays.asList(CanalEntry.EntryType.TRANSACTIONBEGIN, | |
| 21 | CanalEntry.EntryType.TRANSACTIONEND, | |
| 22 | CanalEntry.EntryType.HEARTBEAT); | |
| 23 | ||
| 24 | protected abstract void doStart(); | |
| 25 | ||
| 26 | protected abstract void initConnect(); | |
| 27 | ||
| 28 | protected abstract void disconnect(); | |
| 29 | ||
| 30 | ||
| 31 | @Override | |
| 32 | public void start() { | |
| 33 | new Thread(() -> { | |
| 34 | // spring 启动后 才会进行canal数据拉取 | |
| 35 | while (!ApplicationReadyListener.START_LISTENER_CONTAINER.get()) | |
| 36 | sleep(5L * SLEEP_TIME_MILLI_SECONDS); | |
| 37 | initConnect(); | |
| 38 | while (isRunning() && !Thread.currentThread().isInterrupted()) doStart(); | |
| 39 | disconnect(); // 线程被终止或者容器已经停止,需要关闭连接 | |
| 40 | }).start(); | |
| 41 | setRunning(true); | |
| 42 | } | |
| 43 | ||
| 44 | @Override | |
| 45 | public void stop() { | |
| 46 | setRunning(false); | |
| 47 | } | |
| 48 | ||
| 49 | @Override | |
| 50 | public void stop(Runnable callback) { | |
| 51 | callback.run(); | |
| 52 | setRunning(false); | |
| 53 | sleep(SLEEP_TIME_MILLI_SECONDS); | |
| 54 | } | |
| 55 | ||
| 56 | @Override | |
| 57 | public boolean isRunning() { | |
| 58 | return isRunning; | |
| 59 | } | |
| 60 | ||
| 61 | protected void setRunning(boolean bool) { | |
| 62 | isRunning = bool; | |
| 63 | } | |
| 64 | ||
| 65 | protected void sleep(long sleepTimeMilliSeconds) { | |
| 66 | try { | |
| 67 | TimeUnit.MILLISECONDS.sleep(sleepTimeMilliSeconds); | |
| 68 | if (!isRunning()) Thread.currentThread().interrupt(); | |
| 69 | } catch (InterruptedException e) { | |
| 70 | } | |
| 71 | } | |
| 72 | ||
| 73 | ||
| 74 | } | |
