Building Stretchables

Presentation at AWS User Group Meetup KL

Transcript

1. B U I L D I N G S T R E T C H A B L E S A W S I O S S D K A N D Jinny Wong Xseed Solutions Sdn Bhd
2. G E N E S I S
4. – M E & A D R I A N “… ok, maybe not”
5. – A D R I A N “Let’s build one!”
6. Instances Volumes Snapshots Elastic IP Security Group Key Pair S3 Monitoring Load Balancer Reserved Instance SNS SQS SES …
7. O M G # $ % S D K !
10. “I’m not gonna write API calls for all of that.”
12. T H E A W S I O S S D K Request-Response Object Pair ! EC2DescribeInstanceStatusRequest EC2DescribeInstanceStatusResponse … which in turn, gets passed into another pair… ! EC2DescribeInstanceStatusRequestMarshaller EC2DescribeInstanceStatusResponseUnmarshaller … now it’s finally serialised into a EC2DescribeInstanceStatusRequestMarshaller object … request is invoked (work backwards for response)
13. T H E A W S I O S S D K EC2DescribeInstanceStatusRequest *request = [[EC2DescribeInstanceStatusRequest alloc] init]; ! EC2DescribeInstanceStatusResponse *response = [self.ec2Client describeInstanceStatus:request]; // returns array of EC2Instance ! Fairly straightforward really… and freakin’ comprehensive but…
14. T H E A W S I O S S D K @try { EC2DescribeInstanceStatusResponse *response = [self.ec2Client describeInstanceStatus:req]; } @catch (AmazonServiceException *e) { ... } @catch (AmazonClientException *e) { ... } @finally { ... }
15. T H E A W S I O S S D K Everything throws an exception… including errors Like auth errors due to incorrect access key/secret ! [AmazonErrorHandler shouldNotThrowExceptions];
16. “Enough of that, show me the app!”
17. https://aws.amazon.com/sdkforios/ https://aws.amazon.com/documentation/sdkforios/