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This section explains how to implement an SQS event reciver to receive events via SQS.WSO2 DAS has many inbuilt event receivers to receive events via different transports. In addition, you can receive events via SQS by implementing an SQS event receiver as explained below.

To configure an SQS event receiver, follow the steps given below:

1. Start the WSO2 DAS server by issuing one of the following commands.

2. Create an SQS event receiver. For detailed instructions to create an event receiver, see Configuring Event Receivers.
   
   The following are adapter properties configured for the SQS event receiver

   Adapter Property	Description	Configuration File Property	Optional	Default Value
   queueURL	The URL of the queue from which the event receiver consumes events	queueURL	No	N/A
   AccessKey	The AWS access key.	accessKey	No	N/A
   SecretKey	The AWS secret key.	secretKey	No	N/A
   Region	The AWS service region.	region	No	N/A
   Polling interval	The number of milliseconds between two message retrieval operations.	pollingInterval	Yes	500
   Wait Time	The maximum amount of time (in seconds) that a polling call should wait for a message to become available in the queue.	waitTime	Yes	The default value set in the configurations of the queue.
   Max number of messages	The maximum number of messages to be retrieved per polling call.	maxNumberOfMessages	Yes	1
   Visibility Timeout	The time period after which a message received by a consumer should no longer be visible for other consumers.	visibilityTimeout	Yes	The default value set in the configurations of the queue.
   Delete message after consuming	If this parameter is set to true, each message is deleted once it is consumed.	deleteAfterConsuming	Yes	true
   Max number of retry attempts	The maximum number of times the system must attempt to delete a consumes message if a delete operation fails.	deleteAfterConsuming	Yes	true