nacos编写瀚高数据库插件

1、下载nacos源码

git clone git@github.com:alibaba/nacos.git

2、引入瀚高驱动

 <dependency>
      <groupId>com.highgo</groupId>
      <artifactId>jdbc</artifactId>
      <version>${highgo.version}</version>
 </dependency>

3、DataSourceConstant定义瀚高数据库类型

 public static final String HIGHGO = "highgo";

4、新增TrustedHighgoFunctionEnum枚举，定义相关函数

/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.enums.highgo;

import java.util.HashMap;
import java.util.Map;

/**
 * The TrustedSqlFunctionEnum enum class is used to enumerate and manage a list of trusted built-in SQL functions.
 * By using this enum, you can verify whether a given SQL function is part of the trusted functions list
 * to avoid potential SQL injection risks.
 *
 * @author blake.qiu
 */
public enum TrustedHighgoFunctionEnum {

    /**
     * NOW().
     */
    NOW("NOW()", "CURRENT_TIMESTAMP(3)");

    private static final Map<String, TrustedHighgoFunctionEnum> LOOKUP_MAP = new HashMap<>();

    static {
        for (TrustedHighgoFunctionEnum entry : TrustedHighgoFunctionEnum.values()) {
            LOOKUP_MAP.put(entry.functionName, entry);
        }
    }

    private final String functionName;

    private final String function;

    TrustedHighgoFunctionEnum(String functionName, String function) {
        this.functionName = functionName;
        this.function = function;
    }

    /**
     * Get the function name.
     *
     * @param functionName function name
     * @return function
     */
    public static String getFunctionByName(String functionName) {
        TrustedHighgoFunctionEnum entry = LOOKUP_MAP.get(functionName);
        if (entry != null) {
            return entry.function;
        }
        throw new IllegalArgumentException(String.format("Invalid function name: %s", functionName));
    }
}

5、编写瀚高实现类

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.plugin.datasource.enums.highgo.TrustedHighgoFunctionEnum;
import com.alibaba.nacos.plugin.datasource.mapper.AbstractMapper;

/**
 * The abstract highgo mapper contains CRUD methods.
 *
 * @author blake.qiu
 **/
public abstract class AbstractMapperByHighgo extends AbstractMapper {

    @Override
    public String getFunction(String functionName) {
        return TrustedHighgoFunctionEnum.getFunctionByName(functionName);
    }
}

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.mapper.ConfigInfoBetaMapper;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

import java.util.ArrayList;
import java.util.List;

/**
 * The highgo implementation of ConfigInfoBetaMapper.
 *
 * @author hyx
 **/

public class ConfigInfoBetaMapperByHighgo extends AbstractMapperByHighgo implements ConfigInfoBetaMapper {

    @Override
    public MapperResult findAllConfigInfoBetaForDumpAllFetchRows(MapperContext context) {
        int startRow = context.getStartRow();
        int pageSize = context.getPageSize();
        String sql = " SELECT t.id,data_id,group_id,tenant_id,app_name,content,md5,gmt_modified,beta_ips,encrypted_data_key "
                + " FROM ( SELECT id FROM config_info_beta  ORDER BY id LIMIT " + startRow + "," + pageSize + " )"
                + "  g, config_info_beta t WHERE g.id = t.id ";
        List<Object> paramList = new ArrayList<>();
        paramList.add(startRow);
        paramList.add(pageSize);
        
        return new MapperResult(sql, paramList);
    }

    @Override
    public String getDataSource() {
        return DataSourceConstant.HIGHGO;
    }
}

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.mapper.ConfigInfoGrayMapper;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

import java.util.Collections;

/**
 * The highgo implementation of ConfigInfoGrayMapper.
 *
 * @author rong
 **/

public class ConfigInfoGrayMapperByHighgo extends AbstractMapperByHighgo implements ConfigInfoGrayMapper {
    
    @Override
    public MapperResult findAllConfigInfoGrayForDumpAllFetchRows(MapperContext context) {
        String sql = " SELECT id,data_id,group_id,tenant_id,gray_name,gray_rule,app_name,content,md5,gmt_modified "
                + " FROM  config_info_gray  ORDER BY id LIMIT " + context.getStartRow() + "," + context.getPageSize();
        return new MapperResult(sql, Collections.emptyList());
    }
    
    @Override
    public String getDataSource() {
        return DataSourceConstant.HIGHGO;
    }
}

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.common.utils.ArrayUtils;
import com.alibaba.nacos.common.utils.CollectionUtils;
import com.alibaba.nacos.common.utils.NamespaceUtil;
import com.alibaba.nacos.common.utils.StringUtils;
import com.alibaba.nacos.plugin.datasource.constants.ContextConstant;
import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
import com.alibaba.nacos.plugin.datasource.mapper.ConfigInfoMapper;
import com.alibaba.nacos.plugin.datasource.mapper.ext.WhereBuilder;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * The highgo implementation of ConfigInfoMapper.
 *
 * @author hyx
 **/

public class ConfigInfoMapperByHighgo extends AbstractMapperByHighgo implements ConfigInfoMapper {
    
    private static final String DATA_ID = "dataId";
    
    private static final String GROUP = "group";
    
    private static final String APP_NAME = "appName";
    
    private static final String CONTENT = "content";
    
    private static final String TENANT = "tenant";
    
    @Override
    public MapperResult findConfigInfoByAppFetchRows(MapperContext context) {
        final String appName = (String) context.getWhereParameter(FieldConstant.APP_NAME);
        final String tenantId = (String) context.getWhereParameter(FieldConstant.TENANT_ID);
        String sql = "SELECT id,data_id,group_id,tenant_id,app_name,content FROM config_info"
                + " WHERE tenant_id LIKE ? AND app_name= ?" + " LIMIT " + context.getStartRow() + ","
                + context.getPageSize();
        return new MapperResult(sql, CollectionUtils.list(tenantId, appName));
    }
    
    @Override
    public MapperResult getTenantIdList(MapperContext context) {
        String sql = "SELECT tenant_id FROM config_info WHERE tenant_id != '" + NamespaceUtil.getNamespaceDefaultId()
                + "' GROUP BY tenant_id LIMIT " + context.getStartRow() + "," + context.getPageSize();
        return new MapperResult(sql, Collections.emptyList());
    }
    
    @Override
    public MapperResult getGroupIdList(MapperContext context) {
        String sql = "SELECT group_id FROM config_info WHERE tenant_id ='" + NamespaceUtil.getNamespaceDefaultId()
                + "' GROUP BY group_id LIMIT " + context.getStartRow() + "," + context.getPageSize();
        return new MapperResult(sql, Collections.emptyList());
    }
    
    @Override
    public MapperResult findAllConfigKey(MapperContext context) {
        String sql = " SELECT data_id,group_id,app_name  FROM ( "
                + " SELECT id FROM config_info WHERE tenant_id LIKE ? ORDER BY id LIMIT " + context.getStartRow() + ","
                + context.getPageSize() + " )" + " g, config_info t WHERE g.id = t.id  ";
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.TENANT_ID)));
    }
    
    @Override
    public MapperResult findAllConfigInfoBaseFetchRows(MapperContext context) {
        String sql =
                "SELECT t.id,data_id,group_id,content,md5" + " FROM ( SELECT id FROM config_info ORDER BY id LIMIT "
                        + context.getStartRow() + "," + context.getPageSize() + " )"
                        + " g, config_info t  WHERE g.id = t.id ";
        return new MapperResult(sql, Collections.emptyList());
    }
    
    @Override
    public MapperResult findAllConfigInfoFragment(MapperContext context) {
        String contextParameter = context.getContextParameter(ContextConstant.NEED_CONTENT);
        boolean needContent = contextParameter != null && Boolean.parseBoolean(contextParameter);
        String sql = "SELECT id,data_id,group_id,tenant_id,app_name," + (needContent ? "content," : "")
                + "md5,gmt_modified,type,encrypted_data_key FROM config_info WHERE id > ? ORDER BY id ASC LIMIT "
                + context.getStartRow() + "," + context.getPageSize();
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.ID)));
    }
    
    @Override
    public MapperResult findChangeConfigFetchRows(MapperContext context) {
        final String tenant = (String) context.getWhereParameter(FieldConstant.TENANT_ID);
        final String dataId = (String) context.getWhereParameter(FieldConstant.DATA_ID);
        final String group = (String) context.getWhereParameter(FieldConstant.GROUP_ID);
        final String appName = (String) context.getWhereParameter(FieldConstant.APP_NAME);
        final String tenantTmp = StringUtils.isBlank(tenant) ? StringUtils.EMPTY : tenant;
        final Timestamp startTime = (Timestamp) context.getWhereParameter(FieldConstant.START_TIME);
        final Timestamp endTime = (Timestamp) context.getWhereParameter(FieldConstant.END_TIME);
        
        List<Object> paramList = new ArrayList<>();
        
        final String sqlFetchRows = "SELECT id,data_id,group_id,tenant_id,app_name,type,md5,gmt_modified FROM config_info WHERE ";
        String where = " 1=1 ";
        if (!StringUtils.isBlank(dataId)) {
            where += " AND data_id LIKE ? ";
            paramList.add(dataId);
        }
        if (!StringUtils.isBlank(group)) {
            where += " AND group_id LIKE ? ";
            paramList.add(group);
        }
        
        if (!StringUtils.isBlank(tenantTmp)) {
            where += " AND tenant_id = ? ";
            paramList.add(tenantTmp);
        }
        
        if (!StringUtils.isBlank(appName)) {
            where += " AND app_name = ? ";
            paramList.add(appName);
        }
        if (startTime != null) {
            where += " AND gmt_modified >=? ";
            paramList.add(startTime);
        }
        if (endTime != null) {
            where += " AND gmt_modified <=? ";
            paramList.add(endTime);
        }
        return new MapperResult(
                sqlFetchRows + where + " AND id > " + context.getWhereParameter(FieldConstant.LAST_MAX_ID)
                        + " ORDER BY id ASC" + " LIMIT " + 0 + "," + context.getPageSize(), paramList);
    }
    
    @Override
    public MapperResult listGroupKeyMd5ByPageFetchRows(MapperContext context) {
        String sql = "SELECT t.id,data_id,group_id,tenant_id,app_name,md5,type,gmt_modified,encrypted_data_key FROM "
                + "( SELECT id FROM config_info ORDER BY id LIMIT " + context.getStartRow() + ","
                + context.getPageSize() + " ) g, config_info t WHERE g.id = t.id";
        return new MapperResult(sql, Collections.emptyList());
    }
    
    @Override
    public MapperResult findConfigInfoBaseLikeFetchRows(MapperContext context) {
        final String dataId = (String) context.getWhereParameter(FieldConstant.DATA_ID);
        final String group = (String) context.getWhereParameter(FieldConstant.GROUP_ID);
        final String content = (String) context.getWhereParameter(FieldConstant.CONTENT);
        
        final String sqlFetchRows = "SELECT id,data_id,group_id,tenant_id,content FROM config_info WHERE ";
        String where = " 1=1 AND tenant_id='" + NamespaceUtil.getNamespaceDefaultId() + "' ";
        
        List<Object> paramList = new ArrayList<>();
        
        if (!StringUtils.isBlank(dataId)) {
            where += " AND data_id LIKE ? ";
            paramList.add(dataId);
        }
        if (!StringUtils.isBlank(group)) {
            where += " AND group_id LIKE ";
            paramList.add(group);
        }
        if (!StringUtils.isBlank(content)) {
            where += " AND content LIKE ? ";
            paramList.add(content);
        }
        return new MapperResult(sqlFetchRows + where + " LIMIT " + context.getStartRow() + "," + context.getPageSize(),
                paramList);
    }
    
    @Override
    public MapperResult findConfigInfo4PageFetchRows(MapperContext context) {
        final String tenant = (String) context.getWhereParameter(FieldConstant.TENANT_ID);
        final String dataId = (String) context.getWhereParameter(FieldConstant.DATA_ID);
        final String group = (String) context.getWhereParameter(FieldConstant.GROUP_ID);
        final String appName = (String) context.getWhereParameter(FieldConstant.APP_NAME);
        final String content = (String) context.getWhereParameter(FieldConstant.CONTENT);
        
        List<Object> paramList = new ArrayList<>();
        
        final String sql = "SELECT id,data_id,group_id,tenant_id,app_name,content,type,encrypted_data_key FROM config_info";
        StringBuilder where = new StringBuilder(" WHERE ");
        where.append(" tenant_id=? ");
        paramList.add(tenant);
        if (StringUtils.isNotBlank(dataId)) {
            where.append(" AND data_id=? ");
            paramList.add(dataId);
        }
        if (StringUtils.isNotBlank(group)) {
            where.append(" AND group_id=? ");
            paramList.add(group);
        }
        if (StringUtils.isNotBlank(appName)) {
            where.append(" AND app_name=? ");
            paramList.add(appName);
        }
        if (!StringUtils.isBlank(content)) {
            where.append(" AND content LIKE ? ");
            paramList.add(content);
        }
        return new MapperResult(sql + where + " LIMIT " + context.getStartRow() + "," + context.getPageSize(),
                paramList);
    }
    
    @Override
    public MapperResult findConfigInfoBaseByGroupFetchRows(MapperContext context) {
        String sql = "SELECT id,data_id,group_id,content FROM config_info WHERE group_id=? AND tenant_id=?" + " LIMIT "
                + context.getStartRow() + "," + context.getPageSize();
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.GROUP_ID),
                context.getWhereParameter(FieldConstant.TENANT_ID)));
    }
    
    @Override
    public MapperResult findConfigInfoLike4PageFetchRows(MapperContext context) {
        final String tenant = (String) context.getWhereParameter(FieldConstant.TENANT_ID);
        final String dataId = (String) context.getWhereParameter(FieldConstant.DATA_ID);
        final String group = (String) context.getWhereParameter(FieldConstant.GROUP_ID);
        final String appName = (String) context.getWhereParameter(FieldConstant.APP_NAME);
        final String content = (String) context.getWhereParameter(FieldConstant.CONTENT);
        final String[] types = (String[]) context.getWhereParameter(FieldConstant.TYPE);
        
        WhereBuilder where = new WhereBuilder(
                "SELECT id,data_id,group_id,tenant_id,app_name,content,encrypted_data_key,type FROM config_info");
        where.like("tenant_id", tenant);
        
        if (StringUtils.isNotBlank(dataId)) {
            where.and().like("data_id", dataId);
        }
        if (StringUtils.isNotBlank(group)) {
            where.and().like("group_id", group);
        }
        if (StringUtils.isNotBlank(appName)) {
            where.and().eq("app_name", appName);
        }
        if (StringUtils.isNotBlank(content)) {
            where.and().like("content", content);
        }
        if (!ArrayUtils.isEmpty(types)) {
            where.and().in("type", types);
        }
        where.limit(context.getStartRow(), context.getPageSize());
        return where.build();
    }
    
    @Override
    public MapperResult findAllConfigInfoFetchRows(MapperContext context) {
        String sql = "SELECT t.id,data_id,group_id,tenant_id,app_name,content,md5 "
                + " FROM (  SELECT id FROM config_info WHERE tenant_id LIKE ? ORDER BY id LIMIT ?,? )"
                + " g, config_info t  WHERE g.id = t.id ";
        return new MapperResult(sql,
                CollectionUtils.list(context.getWhereParameter(FieldConstant.TENANT_ID), context.getStartRow(),
                        context.getPageSize()));
    }
    
    @Override
    public String getDataSource() {
        return DataSourceConstant.HIGHGO;
    }
    
}

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.mapper.ConfigInfoTagMapper;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

import java.util.Collections;

/**
 * The highgo implementation of ConfigInfoTagMapper.
 *
 * @author hyx
 **/

public class ConfigInfoTagMapperByHighgo extends AbstractMapperByHighgo implements ConfigInfoTagMapper {

    @Override
    public MapperResult findAllConfigInfoTagForDumpAllFetchRows(MapperContext context) {
        String sql = " SELECT t.id,data_id,group_id,tenant_id,tag_id,app_name,content,md5,gmt_modified "
                + " FROM (  SELECT id FROM config_info_tag  ORDER BY id LIMIT " + context.getStartRow() + ","
                + context.getPageSize() + " ) " + "g, config_info_tag t  WHERE g.id = t.id  ";
        return new MapperResult(sql, Collections.emptyList());
    }

    @Override
    public String getDataSource() {
        return DataSourceConstant.HIGHGO;
    }
}

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.common.utils.ArrayUtils;
import com.alibaba.nacos.common.utils.StringUtils;
import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
import com.alibaba.nacos.plugin.datasource.mapper.ConfigTagsRelationMapper;
import com.alibaba.nacos.plugin.datasource.mapper.ext.WhereBuilder;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

import java.util.ArrayList;
import java.util.List;

/**
 * The highgo implementation of ConfigTagsRelationMapper.
 *
 * @author hyx
 **/

public class ConfigTagsRelationMapperByHighgo extends AbstractMapperByHighgo implements ConfigTagsRelationMapper {
    
    @Override
    public MapperResult findConfigInfo4PageFetchRows(MapperContext context) {
        final String tenant = (String) context.getWhereParameter(FieldConstant.TENANT_ID);
        final String dataId = (String) context.getWhereParameter(FieldConstant.DATA_ID);
        final String group = (String) context.getWhereParameter(FieldConstant.GROUP_ID);
        final String appName = (String) context.getWhereParameter(FieldConstant.APP_NAME);
        final String content = (String) context.getWhereParameter(FieldConstant.CONTENT);
        final String[] tagArr = (String[]) context.getWhereParameter(FieldConstant.TAG_ARR);
        
        List<Object> paramList = new ArrayList<>();
        StringBuilder where = new StringBuilder(" WHERE ");
        final String sql =
                "SELECT a.id,a.data_id,a.group_id,a.tenant_id,a.app_name,a.content FROM config_info  a LEFT JOIN "
                        + "config_tags_relation b ON a.id=b.id";
        
        where.append(" a.tenant_id=? ");
        paramList.add(tenant);
        
        if (StringUtils.isNotBlank(dataId)) {
            where.append(" AND a.data_id=? ");
            paramList.add(dataId);
        }
        if (StringUtils.isNotBlank(group)) {
            where.append(" AND a.group_id=? ");
            paramList.add(group);
        }
        if (StringUtils.isNotBlank(appName)) {
            where.append(" AND a.app_name=? ");
            paramList.add(appName);
        }
        if (!StringUtils.isBlank(content)) {
            where.append(" AND a.content LIKE ? ");
            paramList.add(content);
        }
        where.append(" AND b.tag_name IN (");
        for (int i = 0; i < tagArr.length; i++) {
            if (i != 0) {
                where.append(", ");
            }
            where.append('?');
            paramList.add(tagArr[i]);
        }
        where.append(") ");
        return new MapperResult(sql + where + " LIMIT " + context.getStartRow() + "," + context.getPageSize(),
                paramList);
    }
    
    @Override
    public MapperResult findConfigInfoLike4PageFetchRows(MapperContext context) {
        final String tenant = (String) context.getWhereParameter(FieldConstant.TENANT_ID);
        final String dataId = (String) context.getWhereParameter(FieldConstant.DATA_ID);
        final String group = (String) context.getWhereParameter(FieldConstant.GROUP_ID);
        final String appName = (String) context.getWhereParameter(FieldConstant.APP_NAME);
        final String content = (String) context.getWhereParameter(FieldConstant.CONTENT);
        final String[] tagArr = (String[]) context.getWhereParameter(FieldConstant.TAG_ARR);
        final String[] types = (String[]) context.getWhereParameter(FieldConstant.TYPE);
        
        WhereBuilder where = new WhereBuilder(
                "SELECT a.id,a.data_id,a.group_id,a.tenant_id,a.app_name,a.content,a.type "
                        + "FROM config_info a LEFT JOIN config_tags_relation b ON a.id=b.id");
        
        where.like("a.tenant_id", tenant);
        
        if (StringUtils.isNotBlank(dataId)) {
            where.and().like("a.data_id", dataId);
        }
        if (StringUtils.isNotBlank(group)) {
            where.and().like("a.group_id", group);
        }
        if (StringUtils.isNotBlank(appName)) {
            where.and().eq("a.app_name", appName);
        }
        if (StringUtils.isNotBlank(content)) {
            where.and().like("a.content", content);
        }
        if (!ArrayUtils.isEmpty(tagArr)) {
            where.and().in("b.tag_name", tagArr);
        }
        if (!ArrayUtils.isEmpty(types)) {
            where.and().in("a.type", types);
        }
        
        where.limit(context.getStartRow(), context.getPageSize());
        
        return where.build();
    }
    
    @Override
    public String getDataSource() {
        return DataSourceConstant.HIGHGO;
    }
}

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.common.utils.CollectionUtils;
import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
import com.alibaba.nacos.plugin.datasource.mapper.GroupCapacityMapper;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

/**
 * The highgo implementation of {@link GroupCapacityMapper}.
 *
 * @author lixiaoshuang
 */
public class GroupCapacityMapperByHighgo extends AbstractMapperByHighgo implements GroupCapacityMapper {

    @Override
    public String getDataSource() {
        return DataSourceConstant.HIGHGO;
    }

    @Override
    public MapperResult selectGroupInfoBySize(MapperContext context) {
        String sql = "SELECT id, group_id FROM group_capacity WHERE id > ? LIMIT ?";
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.ID), context.getPageSize()));
    }
}

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.common.utils.CollectionUtils;
import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
import com.alibaba.nacos.plugin.datasource.mapper.HistoryConfigInfoMapper;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

/**
 * The highgo implementation of HistoryConfigInfoMapper.
 *
 * @author hyx
 **/

public class HistoryConfigInfoMapperByHighgo extends AbstractMapperByHighgo implements HistoryConfigInfoMapper {

    @Override
    public MapperResult removeConfigHistory(MapperContext context) {
        String sql = "DELETE FROM his_config_info WHERE gmt_modified < ? LIMIT ?";
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.START_TIME),
                context.getWhereParameter(FieldConstant.LIMIT_SIZE)));
    }

    @Override
    public MapperResult pageFindConfigHistoryFetchRows(MapperContext context) {
        String sql =
                "SELECT nid,data_id,group_id,tenant_id,app_name,src_ip,src_user,op_type,ext_info,publish_type,gray_name,gmt_create,gmt_modified "
                        + "FROM his_config_info " + "WHERE data_id = ? AND group_id = ? AND tenant_id = ? ORDER BY nid DESC  LIMIT "
                        + context.getStartRow() + "," + context.getPageSize();
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.DATA_ID),
                context.getWhereParameter(FieldConstant.GROUP_ID), context.getWhereParameter(FieldConstant.TENANT_ID)));
    }
    
    @Override
    public String getDataSource() {
        return DataSourceConstant.HIGHGO;
    }
}

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.common.utils.CollectionUtils;
import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.constants.FieldConstant;
import com.alibaba.nacos.plugin.datasource.mapper.TenantCapacityMapper;
import com.alibaba.nacos.plugin.datasource.model.MapperContext;
import com.alibaba.nacos.plugin.datasource.model.MapperResult;

/**
 * The highgo implementation of TenantCapacityMapper.
 *
 * @author hyx
 **/

public class TenantCapacityMapperByHighgo extends AbstractMapperByHighgo implements TenantCapacityMapper {

    @Override
    public String getDataSource() {
        return DataSourceConstant.HIGHGO;
    }

    @Override
    public MapperResult getCapacityList4CorrectUsage(MapperContext context) {
        String sql = "SELECT id, tenant_id FROM tenant_capacity WHERE id>? LIMIT ?";
        return new MapperResult(sql, CollectionUtils.list(context.getWhereParameter(FieldConstant.ID),
                context.getWhereParameter(FieldConstant.LIMIT_SIZE)));
    }
    
}

/*
 * Copyright 1999-2022 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.nacos.plugin.datasource.impl.highgo;

import com.alibaba.nacos.plugin.datasource.constants.DataSourceConstant;
import com.alibaba.nacos.plugin.datasource.mapper.TenantInfoMapper;

/**
 * The highgo implementation of TenantInfoMapper.
 *
 * @author hyx
 **/

public class TenantInfoMapperByHighgo extends AbstractMapperByHighgo implements TenantInfoMapper {

    @Override
    public String getDataSource() {
        return DataSourceConstant.HIGHGO;
    }
}

6、在META-INF/services/com.alibaba.nacos.plugin.datasource.mapper.Mapper 文件中添加瀚高Mapper类的全路径名

com.alibaba.nacos.plugin.datasource.impl.highgo.ConfigInfoBetaMapperByHighgo
com.alibaba.nacos.plugin.datasource.impl.highgo.ConfigInfoMapperByHighgo
com.alibaba.nacos.plugin.datasource.impl.highgo.ConfigInfoTagMapperByHighgo
com.alibaba.nacos.plugin.datasource.impl.highgo.ConfigInfoGrayMapperByHighgo
com.alibaba.nacos.plugin.datasource.impl.highgo.ConfigTagsRelationMapperByHighgo
com.alibaba.nacos.plugin.datasource.impl.highgo.HistoryConfigInfoMapperByHighgo
com.alibaba.nacos.plugin.datasource.impl.highgo.TenantInfoMapperByHighgo
com.alibaba.nacos.plugin.datasource.impl.highgo.TenantCapacityMapperByHighgo
com.alibaba.nacos.plugin.datasource.impl.highgo.GroupCapacityMapperByHighgo

7、 nacos-server打包

mvn -Prelease-nacos clean install -U

8、修改application.properties配置

spring.sql.init.platform=highgo

### Count of DB:
db.num=1

### Connect URL of DB:
db.url.0=jdbc:highgo://127.0.0.1:5866/nacos_dev?currentSchema=nacos_dev&characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=Asia/Shanghai
db.user.0=highgo
db.password.0=highgo
db.pool.config.driverClassName=com.highgo.jdbc.Driver