How to run curl command

General
1

Hello,

I'm newly log my datapoints with InfluxDB. I want to create a template to delete datapoints via the InfluxDB API. There is a curl command to delete datapoints, but I don't know how to run this command in Node-RED.

Here is an example of the InfluxDB documentation.

curl --request POST http://localhost:8086/api/v2/delete?org=example-org&bucket=example-bucket \
  --header 'Authorization: Token YOUR_API_TOKEN' \
  --header 'Content-Type: application/json' \
  --data '{
    "start": "2020-03-01T00:00:00Z",
    "stop": "2020-11-14T00:00:00Z",
    "predicate": "_measurement=\"example-measurement\" AND exampleTag=\"exampleTagValue\""
  }'

Can someone please help me to get this command to work in Node-RED?

2

You can run the curl request in the http request node as a post request. Setting the headers in the request node, or passed to the request node in msg.headers. The data would be passed to the request node using msg.payload.
Have a go and if you run into trouble you can post here an export of the flow that is not working. How to import/export a flow

3

I got it! Thank you!

Here is my function node for http request node:

msg.method = "POST" 
msg.url = 'http://localhost:8086/api/v2/delete?org=example-org&bucket=example-bucket'

msg.headers = {
    "Authorization": "Token YOUR_API_TOKEN",              
    "Content-Type": "application/json"
}

msg.payload = {
    "start": "2020-03-01T00:00:00Z",
    "stop": "2020-11-14T00:00:00Z",
    "predicate": "_measurement=\"example-measurement\" AND exampleTag=\"exampleTagValue\""
}

return msg;
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