S
StreetCruiser
·Posted in ctrlX CORE

Looking for example in go-lang for binding the Influx-Db

Hello everybody.

Just wondering if someone knows any link (or article) how to bind the Influx DB in go-lang in the ctrlX Core environment?

The article I found is using the NodeRed and Telegraf Apps:

/ctrlx-automation-how-tos-qmglrz33/post/getting-started-with-influxdb-on-ctrlx-core-G3RGwcMjZH9IKJ7

Required is direct binding of the database in the go-lang and App-Builder-Environment for ctrlX Core.

In www there are some examples how to use the Influx DB with go-lang, but the examples don't work in ctrlX Core environment - I guess because of some restriction (firewall?) in port and so on, as well as some unmatched environment variable in Ubuntu.

Any information is highly appreciated. Thanks.

 

Best reply by nickH

Hi StreetCruiser, 

I'm happy that you managed to write to the influxDB. 🙂

I looked at the influxdb go client on GitHub a little bit deeper. I found the solution for your problem in the section queries (link). 

You can use result.Next() to iterate over the query response. 

result, err := queryAPI.Query(context.Background(), `from(bucket: "TestBucket") |> range(start: -1h) |> filter(fn: (r) => r["_measurement"] == "metric") |> filter(fn: (r) => r["_field"] == "sampleValue")`)
if err == nil {
	// next() to iterate over query result lines
	for result.Next() {
		// print out result
		fmt.Printf("row: %s\n", result.Record().String())
	}
	if result.Err() != nil {
		fmt.Printf("Query error: %s\n", result.Err().Error())
	}

 

Note: you may have to modify the query for your need. 

Best regards, 

Nick

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CTRLXCORE
GO LANG
INFLUX DB
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