com.ververica.cdc.connectors.postgres.table.PostgreSQLReadableMetadata Maven / Gradle / Ivy
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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.
*/
package com.ververica.cdc.connectors.postgres.table;
import org.apache.flink.table.api.DataTypes;
import org.apache.flink.table.data.StringData;
import org.apache.flink.table.data.TimestampData;
import org.apache.flink.table.types.DataType;
import com.ververica.cdc.debezium.table.MetadataConverter;
import io.debezium.connector.AbstractSourceInfo;
import io.debezium.data.Envelope;
import org.apache.kafka.connect.data.Struct;
import org.apache.kafka.connect.source.SourceRecord;
/** Defines the supported metadata columns for {@link PostgreSQLTableSource}. */
public enum PostgreSQLReadableMetadata {
/** Name of the table that contain the row. */
TABLE_NAME(
"table_name",
DataTypes.STRING().notNull(),
new MetadataConverter() {
private static final long serialVersionUID = 1L;
@Override
public Object read(SourceRecord record) {
Struct messageStruct = (Struct) record.value();
Struct sourceStruct = messageStruct.getStruct(Envelope.FieldName.SOURCE);
return StringData.fromString(
sourceStruct.getString(AbstractSourceInfo.TABLE_NAME_KEY));
}
}),
/** Name of the schema that contain the row. */
SCHEMA_NAME(
"schema_name",
DataTypes.STRING().notNull(),
new MetadataConverter() {
private static final long serialVersionUID = 1L;
@Override
public Object read(SourceRecord record) {
Struct messageStruct = (Struct) record.value();
Struct sourceStruct = messageStruct.getStruct(Envelope.FieldName.SOURCE);
return StringData.fromString(
sourceStruct.getString(AbstractSourceInfo.SCHEMA_NAME_KEY));
}
}),
/** Name of the database that contain the row. */
DATABASE_NAME(
"database_name",
DataTypes.STRING().notNull(),
new MetadataConverter() {
private static final long serialVersionUID = 1L;
@Override
public Object read(SourceRecord record) {
Struct messageStruct = (Struct) record.value();
Struct sourceStruct = messageStruct.getStruct(Envelope.FieldName.SOURCE);
return StringData.fromString(
sourceStruct.getString(AbstractSourceInfo.DATABASE_NAME_KEY));
}
}),
/**
* It indicates the time that the change was made in the database. If the record is read from
* snapshot of the table instead of the change stream, the value is always 0.
*/
OP_TS(
"op_ts",
DataTypes.TIMESTAMP_LTZ(3).notNull(),
new MetadataConverter() {
private static final long serialVersionUID = 1L;
@Override
public Object read(SourceRecord record) {
Struct messageStruct = (Struct) record.value();
Struct sourceStruct = messageStruct.getStruct(Envelope.FieldName.SOURCE);
return TimestampData.fromEpochMillis(
(Long) sourceStruct.get(AbstractSourceInfo.TIMESTAMP_KEY));
}
});
private final String key;
private final DataType dataType;
private final MetadataConverter converter;
PostgreSQLReadableMetadata(String key, DataType dataType, MetadataConverter converter) {
this.key = key;
this.dataType = dataType;
this.converter = converter;
}
public String getKey() {
return key;
}
public DataType getDataType() {
return dataType;
}
public MetadataConverter getConverter() {
return converter;
}
}