How to configure NiFi InvokeHTTP to post insert in Clickhouse - apache-nifi

Question

I've in a NiFi attribute the full INSERT command that works with CURL:
echo "INSERT INTO default.PERFTEST_BUFFER VALUES (1, '2020-04-09 19:06:02', 48.8644, 'A')" \
| curl 'http://xxx.xxx.xxx.xxx:8123/?' --data-binary #-
Insert in Attribut :
INSERT INTO default.PERFTEST_BUFFER
VALUES (1, '2020-04-09 19:06:02', 48.8644, 'A')
I can't figure out what should be all the parameters of the InvokeHTTP processor.
I've used for the first two :
POST
http://xxx.xxx.xxx.xxx:8123/
then I'm lost.
Any idea how to configure it ?

Answer 1

If your query is static you can pass it in the query string in the encoded format:
# GET
curl 'http://xxx.xxx.xxx.xxx:8123/?query=INSERT%20INTO%20default.PERFTEST_BUFFER%20VALUES%20%281%2C%20%272020-04-09%2019%3A06%3A02%27%2C%2048.8644%2C%20%27A%27%29'
# POST
curl -d '' 'http://xxx.xxx.xxx.xxx:8123/?query=INSERT%20INTO%20default.PERFTEST_BUFFER%20VALUES%20%281%2C%20%272020-04-09%2019%3A06%3A02%27%2C%2048.8644%2C%20%27A%27%29'
It needs to pass the required values to just two params: HTTP Method and Remote URL of InvokeHTTP-processor.

Answer 2

The way I made it work thanks to daggett and and example here :
https://github.com/zezutom/NiFiByExample
Use before the InvokeHTTP a processor ReplaceText that replace the flowfile content by the variable "Insert" value that have the full Insert command
Search Value (?s)(^.*$)
Replacement Value ${Insert}
So the flow file content is
INSERT INTO default.PERFTEST_BUFFER VALUES (1, '2020-04-09 19:06:02', 48.8644, 'A')
Follow by a processor InvokeHTTP the following parameters
HTTP Method POST
Remote URL http://xxx.xxx.xxx.xxx:8123/
SSL Context Service No value set
Connection Timeout 5 secs
Read Timeout 15 secs
Include Date Header True
Follow Redirects True
Attributes to Send No value set
Basic Authentication Username No value set
Basic Authentication Password No value set
Proxy Configuration Service No value set
Proxy Host No value set
Proxy Port No value set
Proxy Type http
Proxy Username No value set
Proxy Password No value set
Put Response Body In Attribute No value set
Max Length To Put In Attribute 256
Use Digest Authentication false
Always Output Response true
Add Response Headers to Request false
Content-Type ${mime.type}
Send Message Body true
Use Chunked Encoding false
Penalize on "No Retry" false
Use HTTP ETag false
Maximum ETag Cache Size 10MB