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[FLINK-4025] Add possiblity for the RMQ Streaming Source to customize the queue #2073

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[FLINK-4025] Add possiblity for the RMQ Streaming Source to customize the queue #2073

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13 changes: 11 additions & 2 deletions ...ctor-rabbitmq/src/main/java/org/apache/flink/streaming/connectors/rabbitmq/RMQSource.java
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Original file line number Diff line number Diff line change
Expand Up @@ -76,7 +76,7 @@ public class RMQSource<OUT> extends MultipleIdsMessageAcknowledgingSourceBase<OU
private final Integer port;
private final String username;
private final String password;
private final String queueName;
protected final String queueName;
private final boolean usesCorrelationId;
protected DeserializationSchema<OUT> schema;

Expand Down Expand Up @@ -177,6 +177,15 @@ protected ConnectionFactory setupConnectionFactory() {
return new ConnectionFactory();
}

/**
* Sets up the queue. The default implementation just declares the queue. The user may override
* this method to have a custom setup for the queue (i.e. binding the queue to an exchange or
* defining custom queue parameters)
*/
protected void setupQueue() throws IOException {
channel.queueDeclare(queueName, true, false, false, null);
}

/**
* Initializes the connection to RMQ.
*/
Expand All @@ -195,7 +204,7 @@ private void initializeConnection() {
try {
connection = factory.newConnection();
channel = connection.createChannel();
channel.queueDeclare(queueName, true, false, false, null);
setupQueue();
consumer = new QueueingConsumer(channel);

RuntimeContext runtimeContext = getRuntimeContext();
Expand Down