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[mysql] Fallback to build schema by 'desc table' case when parsing DD…
…L failure (apache#949)
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...sql-cdc/src/main/java/com/ververica/cdc/connectors/mysql/schema/MySqlTableDefinition.java
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| /* | ||
| * 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. | ||
| */ | ||
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| package com.ververica.cdc.connectors.mysql.schema; | ||
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| import org.apache.flink.util.CollectionUtil; | ||
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| import com.ververica.cdc.connectors.mysql.source.utils.StatementUtils; | ||
| import io.debezium.relational.TableId; | ||
| import org.apache.commons.lang3.StringUtils; | ||
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| import java.util.List; | ||
| import java.util.stream.Collectors; | ||
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| import static com.ververica.cdc.connectors.mysql.source.utils.StatementUtils.quote; | ||
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| /** used to generate table definition in ddl with "desc table". */ | ||
| public class MySqlTableDefinition { | ||
| TableId tableId; | ||
| List<MySqlFieldDefinition> fieldDefinitions; | ||
| List<String> primaryKeys; | ||
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| public MySqlTableDefinition( | ||
| TableId tableId, | ||
| List<MySqlFieldDefinition> fieldDefinitions, | ||
| List<String> primaryKeys) { | ||
| this.tableId = tableId; | ||
| this.fieldDefinitions = fieldDefinitions; | ||
| this.primaryKeys = primaryKeys; | ||
| } | ||
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| String toDdl() { | ||
| return String.format( | ||
| "CREATE TABLE %s (\n\t %s %s );", | ||
| quote(tableId), fieldDefinitions(), pkDefinition()); | ||
| } | ||
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| private String fieldDefinitions() { | ||
| return fieldDefinitions.stream() | ||
| .map(MySqlFieldDefinition::toDdl) | ||
| .collect(Collectors.joining(", \n\t")); | ||
| } | ||
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| private String pkDefinition() { | ||
| StringBuilder pkDefinition = new StringBuilder(); | ||
| if (!CollectionUtil.isNullOrEmpty(primaryKeys)) { | ||
| pkDefinition.append(","); | ||
| pkDefinition.append( | ||
| String.format( | ||
| "PRIMARY KEY ( %s )", | ||
| primaryKeys.stream() | ||
| .map(StatementUtils::quote) | ||
| .collect(Collectors.joining(",")))); | ||
| } | ||
| return pkDefinition.toString(); | ||
| } | ||
| } | ||
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| /** used to generate field definition in ddl with "desc table". */ | ||
| class MySqlFieldDefinition { | ||
| private String columnName; | ||
| private String columnType; | ||
| private boolean nullable; | ||
| private boolean key; | ||
| private String defaultValue; | ||
| private String extra; | ||
| private boolean unique; | ||
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| public String getColumnName() { | ||
| return columnName; | ||
| } | ||
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| public void setColumnName(String columnName) { | ||
| this.columnName = columnName; | ||
| } | ||
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| public String getColumnType() { | ||
| return columnType; | ||
| } | ||
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| public void setColumnType(String columnType) { | ||
| this.columnType = columnType; | ||
| } | ||
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| public void setNullable(boolean nullable) { | ||
| this.nullable = nullable; | ||
| } | ||
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| public String getDefaultValue() { | ||
| return StringUtils.isEmpty(defaultValue) ? "" : "DEFAULT " + defaultValue; | ||
| } | ||
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| public void setDefaultValue(String defaultValue) { | ||
| this.defaultValue = defaultValue; | ||
| } | ||
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| public boolean isUnsigned() { | ||
| return StringUtils.containsIgnoreCase(columnType, "unsigned"); | ||
| } | ||
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| public boolean isNullable() { | ||
| return nullable; | ||
| } | ||
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| public boolean isKey() { | ||
| return key; | ||
| } | ||
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| public void setKey(boolean key) { | ||
| this.key = key; | ||
| } | ||
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| public String getExtra() { | ||
| return extra; | ||
| } | ||
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| public void setExtra(String extra) { | ||
| this.extra = extra; | ||
| } | ||
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| public boolean isUnique() { | ||
| return unique; | ||
| } | ||
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| public void setUnique(boolean unique) { | ||
| this.unique = unique; | ||
| } | ||
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| public String toDdl() { | ||
| return quote(columnName) + " " + columnType + " " + (nullable ? "" : "NOT NULL"); | ||
| } | ||
| } |
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