How to implement custom handlers – Cloud Application Programming Model

Github repository:

To be published soon…

Introduction:

In this session, we will look at how we can implement custom handlers in Cloud Application Programming Model

Synopsis:

CAP model provides generic handlers that takes care of all the CRUD functionality right out-of-the-box
Sometimes, this may be enough for your business needs, but other times you may need to do more based on business requirements
We can add custom middleware functions that can run before, after or even instead of the generic handler

Steps:

In this example, we will start with a basic custom handler that logs all requests that are sent to the OData Service
Then we will add another custom handler that runs only for the Users entity – We will add a business requirement that all passwords need to be stored encrypted
We will make use of bcryptjs npm package to encrypt the password and store it in our SAP HANA database

Youtube link:

Conclusion:

This video should give you a clear idea on how to implement custom handlers in Cloud Application Programming Model
You can have multiple custom handlers that can run for the same entity before or after the generic handler
In the next video, we will look at a more complex scenario involving the _req object and also how to debug and set breakpoints in our code
If you have any questions or comments, please list them below and I will be happy to answer

Next post:

Previous post:

2 Comments

You must be Logged on to comment or reply to a post.

Patricia Crouch

August 24, 2020 at 12:34 am

Very informative post. Super

TC Venkatesan

June 13, 2021 at 2:14 pm

Very much reusable topic. Thanks for the post