How to handle 400 bad request in mattermost while using node red

[chaitanya9249]

In node red,I am calling an api in one function by http request node.That api generated response

"400 (bad request) error".I am passing that response as attachment format into matter-most. Due to the 400 response I am getting output in mattermost as JSON error.

Please help me how to over come this and how handle 400 error in mattermost in NODE-RED

[ptersilie]

I'm not familiar with node-red. Could you please post some more details please?

[chaitanya9249]

Here I am attaching my node-red flow

**In "PoListApi" I am calling an api as like below:

var mVendorNumber = msg.req.query.mVendor var developerMsg;

msg.headers = { "appToken": 'ms8l0TAFoWAtw9ot9HjjbIMBZlNX' }

if (mVendorNumber.length !== 0) { msg.payload = { "search": { "mVendorNumber": mVendorNumber } } msg.url = "https://qa1.api.hs.homedepot.com/iconx/v1/poworklist/list" } else { msg.payload = "No Results found"; } node.send(msg);**

It gives response as 400 (bad request) error.My intention is I want to catch and handle that error in httprequest node and display as message in attachment format in mattermost app.

Here is my attchment format

{ "_attachment": { "template": { "type": "generic", "content": [{ "h5": "ICONX_DETAILS" }, { "title": { "text": "ICONX_DETAILS", "link": "www.google.co.in" } }, { "table": { "headers": [ "PO LIST" ], "rows": [

                    ]
                }
            }
        ]
    }
}

}

Could you please help me how to catch http errors in http request node in node red.