tomer doron
75d05ca954
motivation: cleanup docs for oss changes: * add useful information in readme, with pointers to examples * update ci setup and example to use latest tools * update contributors list Co-authored-by: Yim Lee <yim_lee@apple.com>
Local Debugging Example
This sample project demonstrates how to write a simple Lambda function in Swift, and how to use local debugging techniques that emulate how the Lambda function would be invoked by the AWS Lambda Runtime engine.
The example includes three modules:
- MyApp is a SwiftUI iOS application that calls the Lambda function.
- MyLambda is a SwiftPM executable package for the Lambda function.
- Shared is a SwiftPM library package used for shared code between the iOS application and the Lambda function, such as the Request and Response model objects.
The local debugging experience is achieved by running the Lambda function in the context of the debug only Lambda.withLocalServer
function which starts a local emulator enabling the communication
between the iOS application and the Lambda function over HTTP.
To try out this example, open the workspace in Xcode and "run" the two targets,
using the relevant MyLambda and MyApp Xcode schemas.
Start with running the MyLambda target on the "My Mac" destination, once it is up you should see a log message in the Xcode console saying
LocalLambdaServer started and listening on 127.0.0.1:7000, receiving payloads on /invoke
which means the local emulator is up and receiving traffic on port 7000 and expecting payloads on the /invoke endpoint.
Continue to run the MyApp target in a simulator destination. Once up, the application's UI should appear in the simulator allowing you
to interact with it.
Once both targets are running, set up breakpoints in the iOS application or Lambda function to observe the system behavior.