Carl-Zhou-CN commented on code in PR #4382: URL: https://github.com/apache/seatunnel/pull/4382#discussion_r1430809381
########## seatunnel-connectors-v2/connector-pulsar/src/main/java/org/apache/seatunnel/connectors/seatunnel/pulsar/sink/PulsarSinkWriter.java: ########## @@ -0,0 +1,285 @@ +/* + * 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.seatunnel.connectors.seatunnel.pulsar.sink; + +import org.apache.seatunnel.api.configuration.ReadonlyConfig; +import org.apache.seatunnel.api.serialization.SerializationSchema; +import org.apache.seatunnel.api.sink.SinkWriter; +import org.apache.seatunnel.api.table.type.SeaTunnelDataType; +import org.apache.seatunnel.api.table.type.SeaTunnelRow; +import org.apache.seatunnel.api.table.type.SeaTunnelRowType; +import org.apache.seatunnel.common.exception.CommonErrorCode; +import org.apache.seatunnel.common.exception.CommonErrorCodeDeprecated; +import org.apache.seatunnel.connectors.seatunnel.pulsar.config.PulsarClientConfig; +import org.apache.seatunnel.connectors.seatunnel.pulsar.config.PulsarConfigUtil; +import org.apache.seatunnel.connectors.seatunnel.pulsar.config.PulsarSemantics; +import org.apache.seatunnel.connectors.seatunnel.pulsar.exception.PulsarConnectorErrorCode; +import org.apache.seatunnel.connectors.seatunnel.pulsar.exception.PulsarConnectorException; +import org.apache.seatunnel.connectors.seatunnel.pulsar.state.PulsarCommitInfo; +import org.apache.seatunnel.connectors.seatunnel.pulsar.state.PulsarSinkState; +import org.apache.seatunnel.format.json.JsonSerializationSchema; +import org.apache.seatunnel.format.json.exception.SeaTunnelJsonFormatException; +import org.apache.seatunnel.format.text.TextSerializationSchema; + +import org.apache.pulsar.client.api.MessageId; +import org.apache.pulsar.client.api.MessageRoutingMode; +import org.apache.pulsar.client.api.Producer; +import org.apache.pulsar.client.api.PulsarClient; +import org.apache.pulsar.client.api.PulsarClientException; +import org.apache.pulsar.client.api.TypedMessageBuilder; +import org.apache.pulsar.client.impl.transaction.TransactionImpl; + +import com.google.common.collect.Lists; + +import java.io.IOException; +import java.util.Arrays; +import java.util.Collections; +import java.util.List; +import java.util.Optional; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.atomic.AtomicLong; +import java.util.function.Function; + +import static org.apache.seatunnel.connectors.seatunnel.pulsar.config.SinkProperties.DEFAULT_FORMAT; +import static org.apache.seatunnel.connectors.seatunnel.pulsar.config.SinkProperties.FIELD_DELIMITER; +import static org.apache.seatunnel.connectors.seatunnel.pulsar.config.SinkProperties.FORMAT; +import static org.apache.seatunnel.connectors.seatunnel.pulsar.config.SinkProperties.MESSAGE_ROUTING_MODE; +import static org.apache.seatunnel.connectors.seatunnel.pulsar.config.SinkProperties.PARTITION_KEY_FIELDS; +import static org.apache.seatunnel.connectors.seatunnel.pulsar.config.SinkProperties.SEMANTICS; +import static org.apache.seatunnel.connectors.seatunnel.pulsar.config.SinkProperties.TEXT_FORMAT; +import static org.apache.seatunnel.connectors.seatunnel.pulsar.config.SinkProperties.TOPIC; +import static org.apache.seatunnel.connectors.seatunnel.pulsar.config.SinkProperties.TRANSACTION_TIMEOUT; + +public class PulsarSinkWriter + implements SinkWriter<SeaTunnelRow, PulsarCommitInfo, PulsarSinkState> { + + private Context context; + private Producer<byte[]> producer; + private PulsarClient pulsarClient; + private SerializationSchema serializationSchema; + private SerializationSchema keySerializationSchema; + private TransactionImpl transaction; + private int transactionTimeout = TRANSACTION_TIMEOUT.defaultValue(); + private PulsarSemantics pulsarSemantics = SEMANTICS.defaultValue(); + private final AtomicLong pendingMessages; + + public PulsarSinkWriter( + Context context, + PulsarClientConfig clientConfig, + SeaTunnelRowType seaTunnelRowType, + ReadonlyConfig pluginConfig, + List<PulsarSinkState> pulsarStates) { + this.context = context; + String topic = pluginConfig.get(TOPIC); + String format = pluginConfig.get(FORMAT); + String delimiter = pluginConfig.get(FIELD_DELIMITER); + Integer transactionTimeout = pluginConfig.get(TRANSACTION_TIMEOUT); + PulsarSemantics pulsarSemantics = pluginConfig.get(SEMANTICS); + MessageRoutingMode messageRoutingMode = pluginConfig.get(MESSAGE_ROUTING_MODE); + this.serializationSchema = createSerializationSchema(seaTunnelRowType, format, delimiter); + List<String> partitionKeyList = getPartitionKeyFields(pluginConfig, seaTunnelRowType); + this.keySerializationSchema = + createKeySerializationSchema(partitionKeyList, seaTunnelRowType); + this.pulsarClient = PulsarConfigUtil.createClient(clientConfig, pulsarSemantics); + + if (PulsarSemantics.EXACTLY_ONCE == pulsarSemantics) { + try { + this.transaction = + (TransactionImpl) + PulsarConfigUtil.getTransaction(pulsarClient, transactionTimeout); + } catch (Exception e) { + throw new PulsarConnectorException( + PulsarConnectorErrorCode.CREATE_TRANSACTION_FAILED, + "Pulsar transaction create fail."); + } + } + try { + this.producer = + PulsarConfigUtil.createProducer( + pulsarClient, topic, pulsarSemantics, pluginConfig, messageRoutingMode); + } catch (PulsarClientException e) { + throw new PulsarConnectorException( + PulsarConnectorErrorCode.CREATE_PRODUCER_FAILED, + "Pulsar Producer create fail."); + } + this.pendingMessages = new AtomicLong(0); + } + + @Override + public void write(SeaTunnelRow element) throws IOException { + byte[] message = serializationSchema.serialize(element); + byte[] key = null; + if (keySerializationSchema != null) { + key = keySerializationSchema.serialize(element); + } + TypedMessageBuilder<byte[]> typedMessageBuilder = + PulsarConfigUtil.createTypedMessageBuilder(producer, transaction); + if (key != null) { + typedMessageBuilder.keyBytes(key); + } + typedMessageBuilder.value(message); + if (PulsarSemantics.NON == pulsarSemantics) { + typedMessageBuilder.sendAsync(); + } else { + pendingMessages.incrementAndGet(); + CompletableFuture<MessageId> future = typedMessageBuilder.sendAsync(); + future.whenComplete( + (id, ex) -> { + pendingMessages.decrementAndGet(); + if (ex != null) { + throw new PulsarConnectorException( + PulsarConnectorErrorCode.SEND_MESSAGE_FAILED, + "send message failed"); + } + }); + } + } + + @Override + public Optional<PulsarCommitInfo> prepareCommit() throws IOException { + if (PulsarSemantics.EXACTLY_ONCE == pulsarSemantics) { + PulsarCommitInfo pulsarCommitInfo = new PulsarCommitInfo(this.transaction.getTxnID()); + return Optional.of(pulsarCommitInfo); + } else { + return Optional.empty(); + } + } + + @Override + public List<PulsarSinkState> snapshotState(long checkpointId) throws IOException { + if (PulsarSemantics.NON != pulsarSemantics) { + /** flush pending messages */ + producer.flush(); + while (pendingMessages.longValue() > 0) { + producer.flush(); + } + } + if (PulsarSemantics.EXACTLY_ONCE == pulsarSemantics) { + List<PulsarSinkState> pulsarSinkStates = + Lists.newArrayList(new PulsarSinkState(this.transaction.getTxnID())); + try { + this.transaction = + (TransactionImpl) + PulsarConfigUtil.getTransaction(pulsarClient, transactionTimeout); + } catch (Exception e) { + throw new PulsarConnectorException( + PulsarConnectorErrorCode.CREATE_TRANSACTION_FAILED, + "Pulsar transaction create fail."); + } + return pulsarSinkStates; + } + return Collections.emptyList(); + } + + @Override + public void abortPrepare() { + if (PulsarSemantics.EXACTLY_ONCE == pulsarSemantics) { + transaction.abort(); + } + } + + @Override + public void close() throws IOException { + producer.close(); + pulsarClient.close(); + } + + /** + * get message SerializationSchema + * + * @param rowType + * @param format + * @param delimiter + * @return + */ + private SerializationSchema createSerializationSchema( + SeaTunnelRowType rowType, String format, String delimiter) { + if (DEFAULT_FORMAT.equals(format)) { + return new JsonSerializationSchema(rowType); + } else if (TEXT_FORMAT.equals(format)) { + return TextSerializationSchema.builder() + .seaTunnelRowType(rowType) + .delimiter(delimiter) + .build(); + } else { + throw new SeaTunnelJsonFormatException( + CommonErrorCode.UNSUPPORTED_DATA_TYPE, "Unsupported format: " + format); + } + } + + /** + * get key SerializationSchema + * + * @param keyFieldNames + * @param seaTunnelRowType + * @return + */ + public static SerializationSchema createKeySerializationSchema( + List<String> keyFieldNames, SeaTunnelRowType seaTunnelRowType) { + if (keyFieldNames == null || keyFieldNames.isEmpty()) { + return null; + } + int[] keyFieldIndexArr = new int[keyFieldNames.size()]; + SeaTunnelDataType[] keyFieldDataTypeArr = new SeaTunnelDataType[keyFieldNames.size()]; + for (int i = 0; i < keyFieldNames.size(); i++) { + String keyFieldName = keyFieldNames.get(i); + int rowFieldIndex = seaTunnelRowType.indexOf(keyFieldName); + keyFieldIndexArr[i] = rowFieldIndex; + keyFieldDataTypeArr[i] = seaTunnelRowType.getFieldType(rowFieldIndex); + } + SeaTunnelRowType keyType = + new SeaTunnelRowType(keyFieldNames.toArray(new String[0]), keyFieldDataTypeArr); + SerializationSchema keySerializationSchema = new JsonSerializationSchema(keyType); + + Function<SeaTunnelRow, SeaTunnelRow> keyDataExtractor = + row -> { + Object[] keyFields = new Object[keyFieldIndexArr.length]; + for (int i = 0; i < keyFieldIndexArr.length; i++) { + keyFields[i] = row.getField(keyFieldIndexArr[i]); + } + return new SeaTunnelRow(keyFields); + }; + return row -> keySerializationSchema.serialize(keyDataExtractor.apply(row)); + } + + /** + * get partition key field list + * + * @param pluginConfig Review Comment: The comment of these parameters is useless, can we delete it？ -- This is an automated message from the Apache Git Service. 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