Package com.alibaba.otter.canal.protocol

Examples of com.alibaba.otter.canal.protocol.Message

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                if (!p.getCompression().equals(Compression.NONE)) {
                    throw new CanalClientException("compression is not supported in this connector");
                }

                Messages messages = Messages.parseFrom(p.getBody());
                Message result = new Message(messages.getBatchId());
                for (ByteString byteString : messages.getMessagesList()) {
                    result.addEntry(Entry.parseFrom(byteString));
                }
                return result;
            }
            case ACK: {
                Ack ack = Ack.parseFrom(p.getBody());
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    public Message get(int batchSize) throws CanalClientException {
        int times = 0;
        while (times < retryTimes) {
            try {
                Message msg = currentConnector.get(batchSize);
                return msg;
            } catch (Throwable t) {
                logger.warn("something goes wrong when getting data from server:{}\n{}",
                    currentConnector.getAddress(),
                    ExceptionUtils.getFullStackTrace(t));
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    public Message get(int batchSize, Long timeout, TimeUnit unit) throws CanalClientException {
        int times = 0;
        while (times < retryTimes) {
            try {
                Message msg = currentConnector.get(batchSize, timeout, unit);
                return msg;
            } catch (Throwable t) {
                logger.warn("something goes wrong when getting data from server:{}\n{}",
                    currentConnector.getAddress(),
                    ExceptionUtils.getFullStackTrace(t));
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    public Message getWithoutAck(int batchSize) throws CanalClientException {
        int times = 0;
        while (times < retryTimes) {
            try {
                Message msg = currentConnector.getWithoutAck(batchSize);
                return msg;
            } catch (Throwable t) {
                logger.warn("something goes wrong when getWithoutAck data from server:{}\n{}",
                    currentConnector.getAddress(),
                    ExceptionUtils.getFullStackTrace(t));
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    public Message getWithoutAck(int batchSize, Long timeout, TimeUnit unit) throws CanalClientException {
        int times = 0;
        while (times < retryTimes) {
            try {
                Message msg = currentConnector.getWithoutAck(batchSize, timeout, unit);
                return msg;
            } catch (Throwable t) {
                logger.warn("something goes wrong when getWithoutAck data from server:{}\n{}",
                    currentConnector.getAddress(),
                    ExceptionUtils.getFullStackTrace(t));
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        int maxEmptyCount = 10;
        int emptyCount = 0;
        int totalCount = 0;
        server.subscribe(clientIdentity);
        while (emptyCount < maxEmptyCount) {
            Message message = server.getWithoutAck(clientIdentity, 11);
            if (CollectionUtils.isEmpty(message.getEntries())) {
                emptyCount++;
                try {
                    Thread.sleep(emptyCount * 300L);
                } catch (InterruptedException e) {
                    Assert.fail();
                }

                System.out.println("empty count : " + emptyCount);
            } else {
                emptyCount = 0;
                totalCount += message.getEntries().size();
                server.ack(clientIdentity, message.getId());
            }
        }

        System.out.println("!!!!!! testGetWithoutAck totalCount : " + totalCount);
        server.unsubscribe(clientIdentity);
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        int maxEmptyCount = 10;
        int emptyCount = 0;
        int totalCount = 0;
        server.subscribe(clientIdentity);
        while (emptyCount < maxEmptyCount) {
            Message message = server.get(clientIdentity, 11);
            if (CollectionUtils.isEmpty(message.getEntries())) {
                emptyCount++;
                try {
                    Thread.sleep(emptyCount * 300L);
                } catch (InterruptedException e) {
                    Assert.fail();
                }

                System.out.println("empty count : " + emptyCount);
            } else {
                emptyCount = 0;
                totalCount += message.getEntries().size();
            }
        }

        System.out.println("!!!!!! testGet totalCount : " + totalCount);
        server.unsubscribe(clientIdentity);
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        int maxEmptyCount = 10;
        int emptyCount = 0;
        int totalCount = 0;
        server.subscribe(clientIdentity);
        while (emptyCount < maxEmptyCount) {
            Message message = server.getWithoutAck(clientIdentity, 11);
            if (CollectionUtils.isEmpty(message.getEntries())) {
                emptyCount++;
                try {
                    Thread.sleep(emptyCount * 300L);
                } catch (InterruptedException e) {
                    Assert.fail();
                }

                System.out.println("empty count : " + emptyCount);
            } else {
                emptyCount = 0;
                totalCount += message.getEntries().size();
            }
        }
        System.out.println("!!!!!! testRollback totalCount : " + totalCount);

        server.rollback(clientIdentity);// 直接rollback掉，再取一次
        emptyCount = 0;
        totalCount = 0;
        while (emptyCount < maxEmptyCount) {
            Message message = server.getWithoutAck(clientIdentity, 11);
            if (CollectionUtils.isEmpty(message.getEntries())) {
                emptyCount++;
                try {
                    Thread.sleep(emptyCount * 300L);
                } catch (InterruptedException e) {
                    Assert.fail();
                }

                System.out.println("empty count : " + emptyCount);
            } else {
                emptyCount = 0;
                totalCount += message.getEntries().size();
            }
        }

        System.out.println("!!!!!! testRollback after rollback ,  totalCount : " + totalCount);
        server.unsubscribe(clientIdentity);
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        int thresold = 50;
        int batchSize = 11;
        server.subscribe(clientIdentity);
        while (emptyCount < maxEmptyCount) {
            Message message = server.get(clientIdentity, batchSize);
            if (CollectionUtils.isEmpty(message.getEntries())) {
                emptyCount++;
                try {
                    Thread.sleep(emptyCount * 300L);
                } catch (InterruptedException e) {
                    Assert.fail();
                }

                System.out.println("empty count : " + emptyCount);
            } else {
                emptyCount = 0;
                totalCount += message.getEntries().size();

                if ((totalCount + 1) % 100 >= thresold && (totalCount + 1) % 100 <= thresold + batchSize) {
                    CanalEventParser eventParser = server.getCanalInstances().get(DESTINATION).getEventParser();
                    if (eventParser instanceof CanalHASwitchable) {
                        ((CanalHASwitchable) eventParser).doSwitch();// 执行切换
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            try {
                MDC.put("destination", destination);
                connector.connect();
                connector.subscribe();
                while (running) {
                    Message message = connector.getWithoutAck(batchSize); // 获取指定数量的数据
                    long batchId = message.getId();
                    int size = message.getEntries().size();
                    if (batchId == -1 || size == 0) {
                        // try {
                        // Thread.sleep(1000);
                        // } catch (InterruptedException e) {
                        // }
                    } else {
                        printSummary(message, batchId, size);
                        printEntry(message.getEntries());
                    }

                    connector.ack(batchId); // 提交确认
                    // connector.rollback(batchId); // 处理失败, 回滚数据
                }
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Related Classes of com.alibaba.otter.canal.protocol.Message

  • com.alibaba.otter.canal.client.impl.ClusterCanalConnector
  • com.alibaba.otter.canal.client.impl.SimpleCanalConnector
  • com.alibaba.otter.canal.example.AbstractCanalClientTest
  • com.alibaba.otter.canal.server.BaseCanalServerWithEmbededTest
  • com.alibaba.otter.canal.server.embeded.CanalServerWithEmbeded
  • com.alibaba.otter.canal.server.netty.handler.SessionHandler
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