How to debug service layer, custom handlers - Cloud Application Programming Model

[miltonc]

Github repository:

To be published soon...

 

Introduction:

• In this session, we will look at how to debug the service layer by accessing the _req object


• Also, we will look at how we can add more complex custom handlers

 

Synopsis:

• The generic handlers serve most CRUD operations out-of-the-box


• But to add custom logic, we have to provide our own custom handlers


• Also, while developing complex custom handlers, we need a way to be able to debug and set breakpoints to access the values of variables at different lines

 

Steps:

• In this example, we will explore the contents of the _req object in our custom handler


• To understand the _req object, we will take an example where the end user needs to provide the password in a custom header in order to access a protected resource


• We will set debug points in our code to look into the structure of the _req object and how we can access the custom header information


• Then we will also add more custom code to compare the encrypted password with the password supplied by the user before returning the protected resource

 

YouTube link:

https://youtu.be/rockvZYiTJ4

 

Conclusion:

• This video should give you a clear idea on how to implement complex custom handlers in Cloud Application Programming Model


• Also, the _req object is quite important when it comes to middleware functions.  You should now be comfortable with accessing, modifying the _req object to suit your needs


• If you have any questions or comments, please list them below and I will be happy to answer

 

Next post:

https://blogs.sap.com/2020/08/23/how-to-implement-functions-cloud-application-programming-model/

 

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