How to send different responses for a same request??

[Ragul]

Hello All,

I have one scenario where i need to send a different responses for a same request(i.e) for first hit of the request i need to send a different response , second hit i need to send a different response and finally for third hit i need to send different response. So for one particular request i need to send three different responses.

 

Transport Protocol: Http/s

[Michiel Helder]

Hi Ragul,

 

My first though would be to use a cache to store the number of requests from a client. This way you can also easily set a time for the requests and you don't need to build up some kind of external solution. But the cache also has some limitations: it is single node and won't survive a gateway restart. But if that's not a problem, I think the cache can be a solution.

 

Regards,

Michiel

[Seenu_Mathew]

I am not very clear as to what is the condition that must be met for a different response to be sent. If the requirement is

 

1^st Hit à Response 1

2^nd Hit à Response 2

3^rd Hit à Response 3

 

I would start a counter in a variable and keep increasing it for each hit. Then forward the request to another service within the same gateway or another gateway.

 

Regards

Seenu Mathew

[Michiel Helder]

Hi Seenu,

 

I assume you would have to keep that counter in a cluster property or external in a DB to have it available across requests, right?

My concern would be that you probably have to start a counter for each client, resulting in a hug list of cluster properties which you probably also want to clean up automatically at some point. By using the client-id or some other identifier as the cache key, you could easily achieve this.

 

In the end the best answer all depends on the details of the requirements.

 

Regards,

Michiel

[Ragul]

HI Michiel,

 

Please find below the details of my requirement:

 

User will be logging in with invalid credential for three times. For first two times, i need to send a error message as a response and for the third time i need to send another error message as response.

 

As I am quite new to CA i don't know how to use cache. It would be a great help for me if you tell me how to use that.(In this case i know the exact email id what user going to give in the request.)

[Ragul]

Thanks Seenu. You are right. I have explained my requirements to Michiel.

Please find below the details of my requirement:

User will be logging in with invalid credential for three times. For first two times, i need to send a error message as a response and for the third time i need to send another error message as response.

If we use a counter variable will it no get reset whenever the gateway closes?? My question might be silly.. Since i am new to Service Virtualization i want to understand how this variable thing works.

 

Regards,

Ragul Murugesh.

[Seenu_Mathew]

Hi Ragul,

 

Here is a good description about how the Cache assertion works

 

https://docops.ca.com/ca-api-gateway/9-1/en/policy-assertions/assertion-palette/service-availability-assertions/store-to-cache-assertion

 

Regards

Seenu Mathew 

[Ragul]

Thanks Seenu.. So for the above mentioned scenario using cache is the only method or is there any other method we can try??

[Zhijun He]

Dear Ragul ,

I agree with MichielHelder , cache assertion is not cluster-wide, using it as counter may not be accurate.

You may think of remote cache (which is a tactical assertion, you can open a support ticket to ask for it), or you can persist the counter to database using jdbc connection.

 

Regards,

Mark