zhuangchong commented on a change in pull request #5116:
URL: 
https://github.com/apache/incubator-dolphinscheduler/pull/5116#discussion_r612118436



##########
File path: 
dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/utils/datasource/DatasourceParamUtil.java
##########
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.dolphinscheduler.api.utils.datasource;
+
+import org.apache.dolphinscheduler.api.dto.datasource.BaseDataSourceParamDTO;
+import org.apache.dolphinscheduler.api.enums.Status;
+import org.apache.dolphinscheduler.api.exceptions.ServiceException;
+import org.apache.dolphinscheduler.common.enums.DbType;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class DatasourceParamUtil {
+
+    private DatasourceParamUtil() {
+    }
+
+    private static final Logger logger = 
LoggerFactory.getLogger(DatasourceParamUtil.class);
+    private static final Map<Integer, DatasourceProcessor> checkProcessorMap = 
new HashMap<>();
+
+    static {
+        checkProcessorMap.put(DbType.MYSQL.getCode(), new 
MysqlDatasourceProcessor());
+        checkProcessorMap.put(DbType.POSTGRESQL.getCode(), new 
PostgreSqlDatasourceProcessor());
+        checkProcessorMap.put(DbType.HIVE.getCode(), new 
HiveDatasourceProcessor());
+        checkProcessorMap.put(DbType.SPARK.getCode(), new 
SparkDatasourceProcessor());
+        checkProcessorMap.put(DbType.CLICKHOUSE.getCode(), new 
ClickHouseDatasourceProcessor());
+        checkProcessorMap.put(DbType.ORACLE.getCode(), new 
OracleDatasourceProcessor());
+        checkProcessorMap.put(DbType.SQLSERVER.getCode(), new 
SqlServerDatasourceProcessor());
+        checkProcessorMap.put(DbType.DB2.getCode(), new 
Db2DatasourceProcessor());
+        checkProcessorMap.put(DbType.PRESTO.getCode(), new 
PrestoDatasourceProcessor());
+    }
+
+    /**
+     * check datasource param
+     *
+     * @param baseDataSourceParamDTO datasource param
+     * @throws ServiceException if param invalid
+     */
+    public static void checkDatasourceParam(BaseDataSourceParamDTO 
baseDataSourceParamDTO) {
+        Integer datasourceType = baseDataSourceParamDTO.getType().getCode();
+        if (!checkProcessorMap.containsKey(datasourceType)) {
+            throw new ServiceException(Status.DATASOURCE_DB_TYPE_ILLEGAL);
+        }
+        
checkProcessorMap.get(datasourceType).checkDatasourceParam(baseDataSourceParamDTO);

Review comment:
       Use switch, no need to use map to get.

##########
File path: 
dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/utils/datasource/AbstractDatasourceProcessor.java
##########
@@ -0,0 +1,156 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.dolphinscheduler.api.utils.datasource;
+
+import org.apache.dolphinscheduler.api.dto.datasource.BaseDataSourceParamDTO;
+import 
org.apache.dolphinscheduler.api.dto.datasource.BaseHdfsDatasourceParamDTO;
+import org.apache.dolphinscheduler.api.enums.Status;
+import org.apache.dolphinscheduler.api.exceptions.ServiceException;
+import org.apache.dolphinscheduler.common.Constants;
+import org.apache.dolphinscheduler.common.enums.DbType;
+import org.apache.dolphinscheduler.common.utils.CommonUtils;
+import org.apache.dolphinscheduler.dao.datasource.MySQLDataSource;
+import org.apache.dolphinscheduler.spi.utils.JSONUtils;
+import org.apache.dolphinscheduler.spi.utils.StringUtils;
+
+import org.apache.commons.collections4.MapUtils;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.regex.Pattern;
+
+public abstract class AbstractDatasourceProcessor implements 
DatasourceProcessor {
+
+    private static final Pattern IPV4_PATTERN = 
Pattern.compile("^[a-zA-Z0-9\\_\\-\\.]+$");
+
+    private static final Pattern IPV6_PATTERN = 
Pattern.compile("^[a-zA-Z0-9\\_\\-\\.\\:\\[\\]]+$");
+
+    private static final Pattern DATABASE_PATTER = 
Pattern.compile("^[a-zA-Z0-9\\_\\-\\.]+$");
+
+    private static final Pattern PARAMS_PATTER = 
Pattern.compile("^[a-zA-Z0-9]+$");
+
+    protected static final String TYPE = "type";
+    protected static final String HOST = "host";
+    protected static final String PORT = "port";
+    protected static final String OTHER = "other";
+
+    @Override
+    public void checkDatasourceParam(BaseDataSourceParamDTO 
baseDataSourceParamDTO) {
+        checkHost(baseDataSourceParamDTO.getHost());
+        checkDatasourcePatter(baseDataSourceParamDTO.getDatabase());
+        checkOther(baseDataSourceParamDTO.getOther());
+    }
+
+    protected Map<String, Object> buildCommonParamMap(String address, String 
jdbcUrl, BaseDataSourceParamDTO dataSourceParam) {
+        Map<String, Object> parameterMap = new LinkedHashMap<>();
+        parameterMap.put(Constants.ADDRESS, address);
+        parameterMap.put(Constants.DATABASE, dataSourceParam.getDatabase());
+        parameterMap.put(Constants.JDBC_URL, jdbcUrl);
+        parameterMap.put(Constants.USER, dataSourceParam.getUserName());
+        parameterMap.put(Constants.PASSWORD, 
CommonUtils.encodePassword(dataSourceParam.getPassword()));
+
+        return parameterMap;
+    }
+
+    /**
+     * Check the host is valid
+     *
+     * @param host datasource host
+     * @throws ServiceException if datasource is invalid
+     */
+    protected void checkHost(String host) {
+        if (!IPV4_PATTERN.matcher(host).matches() || 
!IPV6_PATTERN.matcher(host).matches()) {
+            throw new ServiceException(Status.DATASOURCE_HOST_ILLEGAL);
+        }
+    }
+
+    /**
+     * check database name is valid
+     *
+     * @param database database name
+     * @throws ServiceException if database name is invalid
+     */
+    protected void checkDatasourcePatter(String database) {
+        if (!DATABASE_PATTER.matcher(database).matches()) {
+            throw new ServiceException(Status.DATASOURCE_NAME_ILLEGAL);
+        }
+    }
+
+    /**
+     * check other is valid
+     *
+     * @param other other
+     * @throws ServiceException if other is not empty and invalid
+     */
+    protected void checkOther(String other) {
+        if (StringUtils.isBlank(other)) {
+            return;
+        }
+        Map<String, String> map = JSONUtils.toMap(other);
+        if (MapUtils.isEmpty(map)) {
+            return;
+        }
+        boolean paramsCheck = map.entrySet().stream().allMatch(p -> 
PARAMS_PATTER.matcher(p.getValue()).matches());
+        if (!paramsCheck) {
+            throw new ServiceException(Status.DATASOURCE_OTHER_PARAMS_ILLEGAL);
+        }
+    }
+
+    /**
+     * transform other to otherStr
+     *
+     * @param other other
+     * @param dbType datasource type
+     * @param separator separator
+     * @return otherStr
+     */
+    protected String transformOther(String other, DbType dbType, String 
separator) {
+        Map<String, String> map;
+        if (DbType.MYSQL.equals(dbType)) {
+            map = MySQLDataSource.buildOtherParams(other);
+        } else {
+            map = JSONUtils.toMap(other);
+        }
+        if (MapUtils.isEmpty(map)) {
+            return null;
+        }
+        StringBuilder otherSb = new StringBuilder();
+        for (Map.Entry<String, String> entry : map.entrySet()) {
+            otherSb.append(String.format("%s=%s%s", entry.getKey(), 
entry.getValue(), separator));
+        }
+        if (DbType.DB2.equals(dbType)) {
+            otherSb.deleteCharAt(otherSb.length() - 1);
+        }
+        return otherSb.toString();
+    }

Review comment:
       Please implement it in the subclass.

##########
File path: 
dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/utils/datasource/AbstractDatasourceProcessor.java
##########
@@ -0,0 +1,156 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.dolphinscheduler.api.utils.datasource;
+
+import org.apache.dolphinscheduler.api.dto.datasource.BaseDataSourceParamDTO;
+import 
org.apache.dolphinscheduler.api.dto.datasource.BaseHdfsDatasourceParamDTO;
+import org.apache.dolphinscheduler.api.enums.Status;
+import org.apache.dolphinscheduler.api.exceptions.ServiceException;
+import org.apache.dolphinscheduler.common.Constants;
+import org.apache.dolphinscheduler.common.enums.DbType;
+import org.apache.dolphinscheduler.common.utils.CommonUtils;
+import org.apache.dolphinscheduler.dao.datasource.MySQLDataSource;
+import org.apache.dolphinscheduler.spi.utils.JSONUtils;
+import org.apache.dolphinscheduler.spi.utils.StringUtils;
+
+import org.apache.commons.collections4.MapUtils;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.regex.Pattern;
+
+public abstract class AbstractDatasourceProcessor implements 
DatasourceProcessor {

Review comment:
       The relationship between AbstractDatasourceProcessor and 
BaseDataSourceParamDTO and BaseDataSource
   
   AbstractDatasourceProcessor and BaseDataSourceParamDTO are used to produce 
database parameters,
   
   BaseDataSource is used to parse the parameters, it is recommended to 
consider BaseDataSource to modify together.




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