canal实现MySQL和ES同步实践

以下是一个简化的示例，展示了如何使用Canal将MySQL数据变化同步到Elasticsearch。

import com.alibaba.otter.canal.client.CanalConnector;
import com.alibaba.otter.canal.client.CanalConnectors;
import com.alibaba.otter.canal.protocol.Message;
import com.alibaba.otter.canal.protocol.CanalEntry;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.stereotype.Component;
 
@Component
public class DataSyncToES {
 
    private final RestHighLevelClient client;
 
    public DataSyncToES(RestHighLevelClient client) {
        this.client = client;
    }
 
    public void sync() {
        CanalConnector connector = CanalConnectors.newSingleConnector(
                new InetSocketAddress(AddressUtils.getHostIp(),
                11111), "example", "", "");
 
        int batchSize = 1000;
        try {
            connector.connect();
            connector.subscribe(".*\\..*");
            connector.rollback();
            while (true) {
                Message message = connector.getWithoutAck(batchSize); // 获取指定数量的数据
                long batchId = message.getId();
                if (batchId == -1 || message.getEntries().isEmpty()) {
                    Thread.sleep(1000);
                } else {
                    dataHandler(message.getEntries());
                    connector.ack(batchId); // 确认消息消费成功
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            connector.disconnect();
        }
    }
 
    private void dataHandler(List<CanalEntry.Entry> entrys) throws IOException {
        for (CanalEntry.Entry entry : entrys) {
            if (entry.getEntryType() == CanalEntry.EntryType.TRANSACTIONBEGIN || entry.getEntryType() == CanalEntry.EntryType.TRANSACTIONEND) {
                continue;
            }
            CanalEntry.RowChange rowChage = CanalEntry.RowChange.parseFrom(entry.getStoreValue());
            String tableName = entry.getHeader().getTableName();
            for (CanalEntry.RowData rowData : rowChage.getRowDatasList()) {
                if (rowData.getEventType() == CanalEntry.EventType.DELETE) {
                    // 处理删除事件
                } else if (rowData.getEventType() == CanalEntry.EventType.INSERT) {
                    // 处理插入事件
                    IndexRequest request = new Ind