http-post not working how to debug about json-data-generator

[andrewserff]

Sorry for the delay, I wanted to find out if you are still having this problem. Let me know.

[icesuperbravo]

Hi, I think I also met the similar problem as the question provider in this post. But right now I just resolved it by modifying the source code which I think might not be an elegant solution.
So the case is, I am using JSON-data-generator to an endpoint provided by POWER BI for data visualization through HTTPS request. But my POWER BI service just couldn't receive any data thro REST API. Thus, I just took a lot of time debugging it and finally found that the problem came from the json format.
For POWER BI(I am not sure about other services), the example data in the documentation
{"timestamp":1430244584899,"system":"BADGE","actor":"bob","action":"LOGOUT","objects":["Building 1"],"location":{"lat":-19.4224,"lon":-165.0512},"message":"Entered Building 1"}
should be restricted as:

[{"timestamp":1430244584899,"system":"BADGE","actor":"bob","action":"LOGOUT","objects": "Building 1","location":"lat:-19.4224, lon:-165.0512","message":"Entered Building 1"}] 
//pay attention to that array and objects are not allowed in the content field;

The solution is I manually added a pair of "[]" to wrap the original json as an array with one item in EventLogger.java. In this case, it's better to add a configuration interface in WorkFlow.json to allow users to reprensent json as object or array. (just my objective opinion on this tool).
Hope it will help the people with the same problem. Cheers!

[andrewserff]

So based on @icesuperbravo's feedback, it seems like this is a data format problem and could probably be handled as a specific Logger configuration option. If the receiving endpoint needs the data as an array, then the Logger should handle that. The HttpLogger that you guys are using is a generic logger that assumes that it can just post each event as a json object. Other loggers do things like flatten the json before sending it. So if the POWER BI or other service expects the format to be different, then a customer Logger may be in order.