linjianchang commented on code in PR #3995: URL: https://github.com/apache/flink-cdc/pull/3995#discussion_r2517692719
########## flink-cdc-connect/flink-cdc-pipeline-connectors/flink-cdc-pipeline-connector-oracle/src/main/java/com/apache/flink/cdc/connectors/oracle/source/OracleDataSource.java: ########## @@ -0,0 +1,268 @@ +/* + * 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.apache.flink.cdc.connectors.oracle.source; + +import org.apache.flink.cdc.common.annotation.VisibleForTesting; +import org.apache.flink.cdc.common.configuration.Configuration; +import org.apache.flink.cdc.common.event.Event; +import org.apache.flink.cdc.common.source.DataSource; +import org.apache.flink.cdc.common.source.EventSourceProvider; +import org.apache.flink.cdc.common.source.FlinkSourceFunctionProvider; +import org.apache.flink.cdc.common.source.FlinkSourceProvider; +import org.apache.flink.cdc.common.source.MetadataAccessor; +import org.apache.flink.cdc.connectors.base.options.StartupOptions; +import org.apache.flink.cdc.connectors.base.source.jdbc.JdbcIncrementalSource; +import org.apache.flink.cdc.connectors.oracle.source.config.OracleSourceConfig; +import org.apache.flink.cdc.connectors.oracle.source.config.OracleSourceConfigFactory; +import org.apache.flink.cdc.connectors.oracle.source.meta.offset.RedoLogOffsetFactory; +import org.apache.flink.cdc.connectors.oracle.table.OracleReadableMetaData; +import org.apache.flink.cdc.debezium.DebeziumSourceFunction; +import org.apache.flink.cdc.debezium.table.DebeziumChangelogMode; +import org.apache.flink.cdc.debezium.table.MetadataConverter; +import org.apache.flink.table.api.ValidationException; +import org.apache.flink.table.connector.source.DynamicTableSource; +import org.apache.flink.table.connector.source.abilities.SupportsReadingMetadata; +import org.apache.flink.table.types.DataType; + +import com.apache.flink.cdc.connectors.oracle.source.reader.OraclePipelineRecordEmitter; +import com.apache.flink.cdc.connectors.oracle.source.reader.OracleSourceReader; +import com.apache.flink.cdc.connectors.oracle.source.reader.OracleTableSourceReader; + +import java.time.Duration; +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.Properties; +import java.util.stream.Collectors; +import java.util.stream.Stream; + +import static com.apache.flink.cdc.connectors.oracle.source.OracleDataSourceOptions.SCAN_STARTUP_MODE; + +/** + * A {@link DynamicTableSource} that describes how to create a Oracle redo log from a logical + * description. + */ +public class OracleDataSource implements DataSource, SupportsReadingMetadata { + + private static final String SCAN_STARTUP_MODE_VALUE_INITIAL = "initial"; + private static final String SCAN_STARTUP_MODE_VALUE_LATEST = "latest-offset"; + private static final String DEBEZIUM_PROPERTIES_PREFIX = "debezium."; + private final OracleSourceConfig sourceConfig; + private final Configuration config; + private String[] capturedTables; + + // -------------------------------------------------------------------------------------------- + // Mutable attributes + // -------------------------------------------------------------------------------------------- + + /** Data type that describes the final output of the source. */ + protected DataType producedDataType; + + /** Metadata that is appended at the end of a physical source row. */ + protected List<String> metadataKeys; + + private final List<OracleReadableMetaData> readableMetadataList; + + public OracleDataSource( + OracleSourceConfigFactory configFactory, + Configuration config, + String[] capturedTables, + List<OracleReadableMetaData> readableMetadataList) { + this.sourceConfig = configFactory.create(0); + this.config = config; + this.metadataKeys = Collections.emptyList(); + this.capturedTables = capturedTables; + this.readableMetadataList = readableMetadataList; + } + + @Override + public EventSourceProvider getEventSourceProvider() { + String url = config.get(OracleDataSourceOptions.JDBC_URL); + int port = config.get(OracleDataSourceOptions.PORT); + String hostname = config.get(OracleDataSourceOptions.HOSTNAME); + String database = config.get(OracleDataSourceOptions.DATABASE); + String username = config.get(OracleDataSourceOptions.USERNAME); + String password = config.get(OracleDataSourceOptions.PASSWORD); + String schemaName = config.get(OracleDataSourceOptions.SCHEMALIST); + boolean schemaChangeEnabled = config.get(OracleDataSourceOptions.SCHEMA_CHANGE_ENABLED); + + Properties dbzProperties = new Properties(); + dbzProperties.setProperty( + "database.connection.adapter", + config.get(OracleDataSourceOptions.DATABASE_CONNECTION_ADAPTER)); + dbzProperties.setProperty( + "log.mining.strategy", config.get(OracleDataSourceOptions.LOG_MINING_STRATEGY)); + dbzProperties.setProperty( + "snapshot.locking.mode", config.get(OracleDataSourceOptions.SNAPSHOT_LOCKING_MODE)); + dbzProperties.setProperty( + "snapshot.locking.mode", config.get(OracleDataSourceOptions.SNAPSHOT_LOCKING_MODE)); + dbzProperties.setProperty( + "database.history.store.only.captured.tables.ddl", + config.get(OracleDataSourceOptions.HISTORY_CAPTURED_TABLES_DDL_ENABLE)); + dbzProperties.setProperty("include.schema.changes", String.valueOf(schemaChangeEnabled)); + + Map<String, String> map = + OracleDataSourceOptions.getPropertiesByPrefix(config, DEBEZIUM_PROPERTIES_PREFIX); + map.keySet().stream().forEach(e -> dbzProperties.put(e, map.get(e))); + StartupOptions startupOptions = getStartupOptions(config); + boolean enableParallelRead = + config.get(OracleDataSourceOptions.SCAN_INCREMENTAL_SNAPSHOT_ENABLED); + int splitSize = config.get(OracleDataSourceOptions.SCAN_INCREMENTAL_SNAPSHOT_CHUNK_SIZE); + int splitMetaGroupSize = config.get(OracleDataSourceOptions.CHUNK_META_GROUP_SIZE); + int fetchSize = config.get(OracleDataSourceOptions.SCAN_SNAPSHOT_FETCH_SIZE); + Duration connectTimeout = config.get(OracleDataSourceOptions.CONNECT_TIMEOUT); + int connectionPoolSize = config.get(OracleDataSourceOptions.CONNECTION_POOL_SIZE); + int connectMaxRetries = config.get(OracleDataSourceOptions.CONNECT_MAX_RETRIES); + double distributionFactorUpper = + config.get(OracleDataSourceOptions.SPLIT_KEY_EVEN_DISTRIBUTION_FACTOR_UPPER_BOUND); + double distributionFactorLower = + config.get(OracleDataSourceOptions.SPLIT_KEY_EVEN_DISTRIBUTION_FACTOR_LOWER_BOUND); + boolean closeIdleReaders = + config.get(OracleDataSourceOptions.SCAN_INCREMENTAL_CLOSE_IDLE_READER_ENABLED); + boolean skipSnapshotBackfill = + config.get(OracleDataSourceOptions.SCAN_INCREMENTAL_SNAPSHOT_BACKFILL_SKIP); + + OracleEventDeserializer deserializer = + new OracleEventDeserializer( + DebeziumChangelogMode.ALL, + config.get(OracleDataSourceOptions.SCHEMA_CHANGE_ENABLED), + readableMetadataList); + + RedoLogOffsetFactory offsetFactory = new RedoLogOffsetFactory(); + if (enableParallelRead) { + JdbcIncrementalSource<Event> oracleChangeEventSource = + OracleTableSourceReader.<Event>builder() + .hostname(hostname) + .url(url) + .port(port) + .databaseList(database) + .schemaList(schemaName) + .tableList(capturedTables) + .username(username) + .password(password) + .startupOptions(startupOptions) + .deserializer(deserializer) + .debeziumProperties(dbzProperties) + .splitSize(splitSize) + .splitMetaGroupSize(splitMetaGroupSize) + .fetchSize(fetchSize) + .connectTimeout(connectTimeout) + .connectionPoolSize(connectionPoolSize) + .connectMaxRetries(connectMaxRetries) + .distributionFactorUpper(distributionFactorUpper) + .distributionFactorLower(distributionFactorLower) + .closeIdleReaders(closeIdleReaders) + .skipSnapshotBackfill(skipSnapshotBackfill) + .includeSchemaChanges(schemaChangeEnabled) + .recordEmitter( + new OraclePipelineRecordEmitter( + deserializer, true, offsetFactory, sourceConfig)) + .build(); + + return FlinkSourceProvider.of(oracleChangeEventSource); + } else { + + OracleSourceReader.Builder<Event> builder = OracleSourceReader.<Event>builder(); + if (config.getOptional(OracleDataSourceOptions.JDBC_URL).isPresent()) { + builder = builder.url(config.getOptional(OracleDataSourceOptions.JDBC_URL).get()); + } + DebeziumSourceFunction<Event> sourceFunction = + builder.hostname(config.getOptional(OracleDataSourceOptions.HOSTNAME).get()) + .port(config.getOptional(OracleDataSourceOptions.PORT).get()) + .database( + config.getOptional(OracleDataSourceOptions.DATABASE) + .get()) // monitor database + .schemaList( + config.getOptional(OracleDataSourceOptions.SCHEMALIST) + .get()) // monitor schema + .tableList(capturedTables) // monitor + // EMP table + .username(config.getOptional(OracleDataSourceOptions.USERNAME).get()) + .password(config.getOptional(OracleDataSourceOptions.PASSWORD).get()) Review Comment: have modified -- This is an automated message from the Apache Git Service. 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