How to add the filed in perflog/web_api_details.csv?

Question

Hi all, 
 I need your assistance to solving the situation which is important for my project. I need to modify the logfiles which I know generated automatically. I just need to add some field in the perflog/web_api_details.csv file. 
 How shall I do this? Is there a way to manipulate log4jconfig.xml in Appian cloud environment to capture additional information in perflog/web_api_details .csv file. 
 Please suggest. Thanks in Advance.

Peter Lewis · Answer

Thanks for the additional details - this use case makes sense! For your questions: 
 1) You definitely want to use the integration_details.csv logs. This log is for requests made from Appian, while the web API logs are for requests made to Appian. 
 2) It isn't possible to add the endpoint for the request because integrations work differently than web APIs. Web APIs have a fixed endpoint in Appian while the integration call can use a dynamic endpoint (the endpoint itself accepts an expression that gets evaluated at run time). 
 I think your best bet is to use the Integration UUID column. This column refers to the design object in Appian that performs the integration. If you group your calls by UUID, then you can find the corresponding design object and determine which endpoint it is using. It's a bit more tedious, but it should still get you the information you need. 
 To find the corresponding design object given that UUID, you can do an expression search to find the correct objects.

Peter Lewis · Answer

The easiest way to think about it is that prepare and transform are both time that Appian spends creating the request structure and formatting the sponse respsectively. The execution time is all the time between the request getting sent and receiving a response back, so it would include the latency time. I think the integration designer actually explains this well by showing that the middle time is "Send | Wait | Receive".