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https://issues.apache.org/jira/browse/FLINK-3298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15421715#comment-15421715
]
ASF GitHub Bot commented on FLINK-3298:
---------------------------------------
Github user mushketyk commented on a diff in the pull request:
https://github.com/apache/flink/pull/2314#discussion_r74839402
--- Diff:
flink-streaming-connectors/flink-connector-activemq/src/main/java/org/apache/flink/streaming/connectors/activemq/AMQSource.java
---
@@ -0,0 +1,258 @@
+/*
+ * 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.activemq;
+
+import org.apache.activemq.ActiveMQConnectionFactory;
+import org.apache.activemq.ActiveMQSession;
+import org.apache.flink.api.common.functions.RuntimeContext;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.api.java.typeutils.ResultTypeQueryable;
+import org.apache.flink.configuration.Configuration;
+import
org.apache.flink.streaming.api.functions.source.MessageAcknowledgingSourceBase;
+import org.apache.flink.streaming.api.operators.StreamingRuntimeContext;
+import org.apache.flink.streaming.util.serialization.DeserializationSchema;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.jms.BytesMessage;
+import javax.jms.Connection;
+import javax.jms.Destination;
+import javax.jms.ExceptionListener;
+import javax.jms.JMSException;
+import javax.jms.Message;
+import javax.jms.MessageConsumer;
+import javax.jms.Session;
+import java.io.Serializable;
+import java.util.HashMap;
+import java.util.List;
+
+/**
+ * Source for reading messages from an ActiveMQ queue.
+ * <p>
+ * To create an instance of AMQSink class one should initialize and
configure an
+ * instance of a connection factory that will be used to create a
connection.
+ * This source is waiting for incoming messages from ActiveMQ and converts
them from
+ * an array of bytes into an instance of the output type. If an incoming
+ * message is not a message with an array of bytes, this message is ignored
+ * and warning message is logged.
+ *
+ * @param <OUT> type of output messages
+ */
+public class AMQSource<OUT> extends MessageAcknowledgingSourceBase<OUT,
String>
+ implements ResultTypeQueryable<OUT> {
+
+ private static final Logger LOG =
LoggerFactory.getLogger(AMQSource.class);
+
+ private final ActiveMQConnectionFactory connectionFactory;
+ private final String queueName;
+ private final DeserializationSchema<OUT> deserializationSchema;
+ private boolean logFailuresOnly = false;
+ private RunningChecker runningChecker;
--- End diff --
In some unit tests that I wrote need to execute "run" method exactly once.
I think that it is simpler to achieve it using a separate interface that
controls running of source.
To avoid confusion I'll add a comment describing this, but if you have a
better idea of how to achieve this, don't hesitate to suggest it.
> Streaming connector for ActiveMQ
> --------------------------------
>
> Key: FLINK-3298
> URL: https://issues.apache.org/jira/browse/FLINK-3298
> Project: Flink
> Issue Type: New Feature
> Components: Streaming Connectors
> Reporter: Mohit Sethi
> Assignee: Ivan Mushketyk
> Priority: Minor
>
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