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canal

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This commit is contained in:
xuelijun
2025-07-15 10:04:16 +08:00
parent c2adf5155f
commit 10f8e8251b
15 changed files with 773 additions and 2 deletions
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15
tashow-module/tashow-module-infra/pom.xml
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@@ -37,6 +37,14 @@
<version>${revision}</version>
</dependency>
<dependency>
<groupId>com.alibaba.otter</groupId>
<artifactId>canal.client</artifactId>
<version>1.1.0</version>
</dependency>
<!-- 业务组件 -->
<dependency>
<groupId>com.tashow.cloud</groupId>
@@ -69,6 +77,13 @@
<artifactId>tashow-data-redis</artifactId>
</dependency>
<dependency>
<groupId>com.tashow.cloud</groupId>
<artifactId>tashow-data-canal</artifactId>
<version>1.0.0</version>
<scope>compile</scope>
</dependency>
<!-- RPC 远程调用相关 -->
<dependency>
<groupId>com.tashow.cloud</groupId>

204
tashow-module/tashow-module-infra/src/main/java/com/tashow/cloud/infra/framework/CanalClient.java Normal file
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@@ -0,0 +1,204 @@
package com.tashow.cloud.infra.framework;
import com.alibaba.otter.canal.client.CanalConnector;
import com.alibaba.otter.canal.client.CanalConnectors;
import com.alibaba.otter.canal.protocol.CanalEntry.*;
import com.alibaba.otter.canal.protocol.Message;
import com.google.protobuf.InvalidProtocolBufferException;
import org.springframework.stereotype.Component;
import java.net.InetSocketAddress;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
@Component
public class CanalClient {
//sql队列
private Queue<String> SQL_QUEUE = new ConcurrentLinkedQueue<>();
/**
* canal入库方法
*/
public void run() {
CanalConnector connector = CanalConnectors.newSingleConnector(new InetSocketAddress("43.139.42.137",
11111), "example", "", "");
int batchSize = 1000;
try {
connector.connect();
// connector.subscribe(".*\\..*");
connector.subscribe("tashow-platform");
connector.rollback();
try {
while (true) {
//尝试从master那边拉去数据batchSize条记录，有多少取多少
Message message = connector.getWithoutAck(batchSize);
long batchId = message.getId();
int size = message.getEntries().size();
if (batchId == -1 || size == 0) {
Thread.sleep(1000);
} else {
dataHandle(message.getEntries());
}
connector.ack(batchId);
//当队列里面堆积的sql大于一定数值的时候就模拟执行
if (SQL_QUEUE.size() >= 1) {
executeQueueSql();
}
}
} catch (InterruptedException e) {
e.printStackTrace();
} catch (InvalidProtocolBufferException e) {
e.printStackTrace();
}
} finally {
connector.disconnect();
}
}
/**
* 模拟执行队列里面的sql语句
*/
public void executeQueueSql() {
int size = SQL_QUEUE.size();
for (int i = 0; i < size; i++) {
String sql = SQL_QUEUE.poll();
System.out.println("[sql]----> " + sql);
this.execute(sql);
}
}
/**
* 数据处理
*
* @param entrys
*/
private void dataHandle(List<Entry> entrys) throws InvalidProtocolBufferException {
for (Entry entry : entrys) {
if(entry.getHeader().getSchemaName().equals("hc")){
return;
}
if (EntryType.ROWDATA == entry.getEntryType()) {
RowChange rowChange = RowChange.parseFrom(entry.getStoreValue());
EventType eventType = rowChange.getEventType();
if (eventType == EventType.DELETE) {
saveDeleteSql(entry);
} else if (eventType == EventType.UPDATE) {
saveUpdateSql(entry);
} else if (eventType == EventType.INSERT) {
saveInsertSql(entry);
}
}
}
}
/**
* 保存更新语句
*
* @param entry
*/
private void saveUpdateSql(Entry entry) {
try {
RowChange rowChange = RowChange.parseFrom(entry.getStoreValue());
List<RowData> rowDatasList = rowChange.getRowDatasList();
for (RowData rowData : rowDatasList) {
List<Column> newColumnList = rowData.getAfterColumnsList();
StringBuffer sql = new StringBuffer("update " + entry.getHeader().getTableName() + " set ");
for (int i = 0; i < newColumnList.size(); i++) {
sql.append(" " + newColumnList.get(i).getName()
+ " = '" + newColumnList.get(i).getValue() + "'");
if (i != newColumnList.size() - 1) {
sql.append(",");
}
}
sql.append(" where ");
List<Column> oldColumnList = rowData.getBeforeColumnsList();
for (Column column : oldColumnList) {
if (column.getIsKey()) {
//暂时只支持单一主键
sql.append(column.getName() + "=" + column.getValue());
break;
}
}
SQL_QUEUE.add(sql.toString());
}
} catch (InvalidProtocolBufferException e) {
e.printStackTrace();
}
}
/**
* 保存删除语句
*
* @param entry
*/
private void saveDeleteSql(Entry entry) {
try {
RowChange rowChange = RowChange.parseFrom(entry.getStoreValue());
List<RowData> rowDatasList = rowChange.getRowDatasList();
for (RowData rowData : rowDatasList) {
List<Column> columnList = rowData.getBeforeColumnsList();
StringBuffer sql = new StringBuffer("delete from " + entry.getHeader().getTableName() + " where ");
for (Column column : columnList) {
if (column.getIsKey()) {
//暂时只支持单一主键
sql.append(column.getName() + "=" + column.getValue());
break;
}
}
SQL_QUEUE.add(sql.toString());
}
} catch (InvalidProtocolBufferException e) {
e.printStackTrace();
}
}
/**
* 保存插入语句
*
* @param entry
*/
private void saveInsertSql(Entry entry) {
try {
RowChange rowChange = RowChange.parseFrom(entry.getStoreValue());
List<RowData> rowDatasList = rowChange.getRowDatasList();
for (RowData rowData : rowDatasList) {
List<Column> columnList = rowData.getAfterColumnsList();
StringBuffer sql = new StringBuffer("insert into " + entry.getHeader().getTableName() + " (");
for (int i = 0; i < columnList.size(); i++) {
sql.append(columnList.get(i).getName());
if (i != columnList.size() - 1) {
sql.append(",");
}
}
sql.append(") VALUES (");
for (int i = 0; i < columnList.size(); i++) {
sql.append("'" + columnList.get(i).getValue() + "'");
if (i != columnList.size() - 1) {
sql.append(",");
}
}
sql.append(")");
SQL_QUEUE.add(sql.toString());
}
} catch (InvalidProtocolBufferException e) {
e.printStackTrace();
}
}
/**
* 入库
* @param sql
*/
public void execute(String sql) {
System.out.println("sql======="+sql);
}
}

5
tashow-module/tashow-module-infra/src/main/resources/application-local.yaml
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@@ -7,10 +7,11 @@ spring:
username: nacos # Nacos 账号
password: nacos # Nacos 密码
discovery: # 【配置中心】配置项
namespace: liwq # 命名空间。这里使用 dev 开发环境
namespace: 76667956-2ac2-4e05-906b-4bca4ebcc5f0 # 命名空间。这里使用 dev 开发环境
group: DEFAULT_GROUP # 使用的 Nacos 配置分组，默认为 DEFAULT_GROUP
metadata:
version: 1.0.0 # 服务实例的版本号，可用于灰度发布
config: # 【注册中心】配置项
namespace: liwq # 命名空间。这里使用 dev 开发环境
namespace: 76667956-2ac2-4e05-906b-4bca4ebcc5f0 # 命名空间。这里使用 dev 开发环境
group: DEFAULT_GROUP # 使用的 Nacos 配置分组，默认为 DEFAULT_GROUP