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https://issues.apache.org/jira/browse/FLINK-9168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16622290#comment-16622290
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ASF GitHub Bot commented on FLINK-9168:
---------------------------------------
chrismiller commented on a change in pull request #5845:
[FLINK-9168][flink-connectors]Pulsar Sink connector
URL: https://github.com/apache/flink/pull/5845#discussion_r219230230
##########
File path:
flink-connectors/flink-connector-pulsar/src/main/java/org/apache/flink/streaming/connectors/pulsar/FlinkPulsarProducer.java
##########
@@ -0,0 +1,304 @@
+/*
+ * 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.flink.streaming.connectors.pulsar;
+
+import org.apache.flink.api.common.functions.RuntimeContext;
+import org.apache.flink.api.common.serialization.SerializationSchema;
+import org.apache.flink.api.java.ClosureCleaner;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.runtime.state.FunctionInitializationContext;
+import org.apache.flink.runtime.state.FunctionSnapshotContext;
+import org.apache.flink.streaming.api.checkpoint.CheckpointedFunction;
+import org.apache.flink.streaming.api.functions.sink.RichSinkFunction;
+import org.apache.flink.streaming.api.operators.StreamingRuntimeContext;
+import
org.apache.flink.streaming.connectors.pulsar.partitioner.PulsarKeyExtractor;
+import org.apache.flink.util.SerializableObject;
+
+import org.apache.pulsar.client.api.Message;
+import org.apache.pulsar.client.api.MessageBuilder;
+import org.apache.pulsar.client.api.MessageId;
+import org.apache.pulsar.client.api.Producer;
+import org.apache.pulsar.client.api.ProducerConfiguration;
+import org.apache.pulsar.client.api.PulsarClient;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.function.Function;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/**
+ * Flink Sink to produce data into a Pulsar topic.
+ */
+public class FlinkPulsarProducer<IN>
+ extends RichSinkFunction<IN>
+ implements CheckpointedFunction {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(FlinkPulsarProducer.class);
+
+ /**
+ * The pulsar service url.
+ */
+ protected final String serviceUrl;
+
+ /**
+ * User defined configuration for the producer.
+ */
+ protected final ProducerConfiguration producerConfig;
+
+ /**
+ * The name of the default topic this producer is writing data to.
+ */
+ protected final String defaultTopicName;
+
+ /**
+ * (Serializable) SerializationSchema for turning objects used with
Flink into.
+ * byte[] for Pulsar.
+ */
+ protected final SerializationSchema<IN> schema;
+
+ /**
+ * User-provided key extractor for assigning a key to a pulsar message.
+ */
+ protected final PulsarKeyExtractor<IN> flinkPulsarKeyExtractor;
+
+ /**
+ * Produce Mode.
+ */
+ protected PulsarProduceMode produceMode =
PulsarProduceMode.AT_LEAST_ONE;
+
+ /**
+ * If true, the producer will wait until all outstanding records have
been send to the broker.
+ */
+ protected boolean flushOnCheckpoint;
+
+ // -------------------------------- Runtime fields
------------------------------------------
+
+ /** KafkaProducer instance. */
+ protected transient Producer producer;
+
+ /** The callback than handles error propagation or logging callbacks. */
+ protected transient Function<MessageId, MessageId> successCallback =
msgId -> {
Review comment:
This won't deserialise correctly, it will end up null and result in invoke()
generating a NPE. The solution is to initialise successCallback in the open()
method instead, similar to how failureCallback is initialised.
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> Pulsar Sink Connector
> ---------------------
>
> Key: FLINK-9168
> URL: https://issues.apache.org/jira/browse/FLINK-9168
> Project: Flink
> Issue Type: New Feature
> Components: Streaming Connectors
> Affects Versions: 1.6.0
> Reporter: Zongyang Xiao
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.7.0
>
>
> Flink does not provide a sink connector for Pulsar.
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