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https://issues.apache.org/jira/browse/NIFI-1296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15248187#comment-15248187
]
ASF GitHub Bot commented on NIFI-1296:
--------------------------------------
Github user olegz commented on a diff in the pull request:
https://github.com/apache/nifi/pull/345#discussion_r60269808
--- Diff:
nifi-nar-bundles/nifi-kafka-bundle/nifi-kafka-pubsub-processors/src/main/java/org/apache/nifi/processors/kafka/pubsub/ConsumeKafka.java
---
@@ -0,0 +1,197 @@
+/*
+ * 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.nifi.processors.kafka.pubsub;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.Set;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.apache.kafka.clients.consumer.ConsumerConfig;
+import org.apache.kafka.clients.consumer.ConsumerRecord;
+import org.apache.kafka.clients.consumer.ConsumerRecords;
+import org.apache.kafka.clients.consumer.KafkaConsumer;
+import org.apache.kafka.common.serialization.ByteArrayDeserializer;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnStopped;
+import org.apache.nifi.components.AllowableValue;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.OutputStreamCallback;
+import org.apache.nifi.processor.util.StandardValidators;
+
+@InputRequirement(Requirement.INPUT_FORBIDDEN)
+@CapabilityDescription("Consumes messages from Apache Kafka")
+@Tags({ "Kafka", "Get", "Ingest", "Ingress", "Topic", "PubSub", "Consume"
})
+public class ConsumeKafka extends
AbstractKafkaProcessor<KafkaConsumer<byte[], byte[]>> {
+
+ static final AllowableValue OFFSET_EARLIEST = new
AllowableValue("earliest", "earliest", "Automatically reset the offset to the
earliest offset");
+
+ static final AllowableValue OFFSET_LATEST = new
AllowableValue("latest", "latest", "Automatically reset the offset to the
latest offset");
+
+ static final AllowableValue OFFSET_NONE = new AllowableValue("none",
"none", "Throw exception to the consumer if no previous offset is found for the
consumer's group");
+
+ static final PropertyDescriptor TOPIC = TOPIC_BUILDER
+ .expressionLanguageSupported(false)
--- End diff --
Valid suggestion, but at this point it's all about consistency and symmetry
to the existing Get/PutKafka and in PUT EL is enabled while in GET it is not
> Add capabilities to Kafka NAR to use new Kafka API (0.9)
> --------------------------------------------------------
>
> Key: NIFI-1296
> URL: https://issues.apache.org/jira/browse/NIFI-1296
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Affects Versions: 0.4.0
> Reporter: Oleg Zhurakousky
> Assignee: Oleg Zhurakousky
> Fix For: 0.7.0
>
>
> Not sure when can we address this, but the interesting comment in
> https://github.com/apache/nifi/pull/143. The usage of new API may introduce
> issues with running against older Kafka brokers (e.g., 0.8). Need to
> investigate.
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