Implement Amazon SQS Connector

[Asitha]

Description:

Implement Amazon SQS Ballerina connector using the REST API.

We might need to consider following when designing the API's

• Handling requests for producing and receiving messages
• Handling requests in batches.
• Improving producer and consumer throughput using horizontal scaling

[Maninda]

As the first task following API methods were chosen to implement.

1. createQueue - Create a new queue in SQS
2. addToQueue - Add a message to a created queue
3. consumeFromQueue - Consume a message from the queue
4. deleteFromQueue - Delete a mesage from queue after consuming from the queue

FIFO queue in SQS was selected to implement first and later Standard queue will be implemented.

[Maninda]

Authentication mechanism was implemented for AWS POST requests and the above mentioned API methods were implemented. At the moment the parameters are given as a query parameter string. Ballerina API will be developed for each of the parameters for each of the above API methods.

[Asitha]

Can you share a sample ballerina code so that we can see how it looks like at the end? It doesn't have to work, what we are expecting is the API design to get a general understanding.

[Asitha]

Done with PR ballerina-platform/module-ballerinax-aws.sqs#1