Package com.alibaba.otter.canal.instance.core

Examples of com.alibaba.otter.canal.instance.core.CanalInstance

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    }

    @Test
    public void testInstance() {
        CanalInstanceGenerator generator = (CanalInstanceGenerator) context.getBean("canalInstanceGenerator");
        CanalInstance canalInstance = generator.generate("instance");
        Assert.notNull(canalInstance);

        canalInstance.start();
        try {
            Thread.sleep(10 * 1000);
        } catch (InterruptedException e) {
        }
        canalInstance.stop();
    }
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    }

    @Test
    public void testInstance() {
        CanalInstanceGenerator generator = (CanalInstanceGenerator) context.getBean("canalInstanceGenerator");
        CanalInstance canalInstance = generator.generate("instance");
        Assert.notNull(canalInstance);

        canalInstance.start();
        try {
            Thread.sleep(10 * 1000);
        } catch (InterruptedException e) {
        }
        canalInstance.stop();
    }
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    }

    @Test
    public void testInstance() {
        CanalInstanceGenerator generator = (CanalInstanceGenerator) context.getBean("canalInstanceGenerator");
        CanalInstance canalInstance = generator.generate("instance");
        Assert.notNull(canalInstance);

        canalInstance.start();
        try {
            Thread.sleep(10 * 1000);
        } catch (InterruptedException e) {
        }
        canalInstance.stop();
    }
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        super.start();

        canalInstances = new MapMaker().makeComputingMap(new Function<String, CanalInstance>() {

            public CanalInstance apply(String destination) {
                CanalInstance canalInstance = canalInstanceGenerator.generate(destination);
                return canalInstance;
            }
        });

        // lastRollbackPostions = new MapMaker().makeMap();
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    public void stop() {
        super.stop();
        for (Map.Entry<String, CanalInstance> entry : canalInstances.entrySet()) {
            try {
                CanalInstance instance = entry.getValue();
                if (instance.isStart()) {
                    try {
                        String destination = entry.getKey();
                        MDC.put("destination", destination);
                        entry.getValue().stop();
                        logger.info("stop CanalInstances[{}] successfully", destination);
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            }
        }
    }

    public void start(final String destination) {
        final CanalInstance canalInstance = canalInstances.get(destination);
        if (!canalInstance.isStart()) {
            try {
                MDC.put("destination", destination);
                canalInstance.start();
                logger.info("start CanalInstances[{}] successfully", destination);
            } finally {
                MDC.remove("destination");
            }
        }
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            }
        }
    }

    public void stop(String destination) {
        CanalInstance canalInstance = canalInstances.remove(destination);
        if (canalInstance != null) {
            if (canalInstance.isStart()) {
                try {
                    MDC.put("destination", destination);
                    canalInstance.stop();
                    logger.info("stop CanalInstances[{}] successfully", destination);
                } finally {
                    MDC.remove("destination");
                }
            }
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    /**
     * 客户端订阅，重复订阅时会更新对应的filter信息
     */
    public void subscribe(ClientIdentity clientIdentity) throws CanalServerException {
        CanalInstance canalInstance = canalInstances.get(clientIdentity.getDestination());
        if (!canalInstance.getMetaManager().isStart()) {
            canalInstance.getMetaManager().start();
        }

        canalInstance.getMetaManager().subscribe(clientIdentity); // 执行一下meta订阅

        Position position = canalInstance.getMetaManager().getCursor(clientIdentity);
        if (position == null) {
            position = canalInstance.getEventStore().getFirstPosition();// 获取一下store中的第一条
            if (position != null) {
                canalInstance.getMetaManager().updateCursor(clientIdentity, position); // 更新一下cursor
            }
            logger.info("subscribe successfully, {} with first position:{} ", clientIdentity, position);
        } else {
            logger.info("subscribe successfully, use last cursor position:{} ", clientIdentity, position);
        }

        // 通知下订阅关系变化
        canalInstance.subscribeChange(clientIdentity);
    }
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    /**
     * 取消订阅
     */
    public void unsubscribe(ClientIdentity clientIdentity) throws CanalServerException {
        CanalInstance canalInstance = canalInstances.get(clientIdentity.getDestination());
        canalInstance.getMetaManager().unsubscribe(clientIdentity); // 执行一下meta订阅

        logger.info("unsubscribe successfully, {}", clientIdentity);
    }
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    /**
     * 查询所有的订阅信息
     */
    public List<ClientIdentity> listAllSubscribe(String destination) throws CanalServerException {
        CanalInstance canalInstance = canalInstances.get(destination);
        return canalInstance.getMetaManager().listAllSubscribeInfo(destination);
    }
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Related Classes of com.alibaba.otter.canal.instance.core.CanalInstance

  • com.alibaba.otter.canal.instance.spring.integrated.DefaultSpringInstanceTest
  • com.alibaba.otter.canal.instance.spring.integrated.GroupSpringInstanceTest
  • com.alibaba.otter.canal.instance.spring.integrated.MemorySpringInstanceTest
  • com.alibaba.otter.canal.server.embeded.CanalServerWithEmbeded
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