Connecting to an Instance Using Go

Prerequisites

• You have downloaded the client code from the InfluxDB open-source project website.

Example Code for Accessing an Instance Using a Non-SSL Connection

package main

import (
    "fmt"
    _ "github.com/influxdata/influxdb1-client" // this is important because of the bug in go mod
    client "github.com/influxdata/influxdb1-client/v2"
    "os"
)

func main(){
    c, err := client.NewHTTPClient(client.HTTPConfig{
        Addr: "http://ip:port",
        // There will be security risks if the username and password used for authentication are directly written into code. Store the username and password in ciphertext in the configuration file or environment variables.
        // In this example, the username and password are stored in the environment variables. Before running this example, set environment variables EXAMPLE_USERNAME_ENV and EXAMPLE_PASSWORD_ENV as needed.
        username = os.Getenv("EXAMPLE_USERNAME_ENV"),
        password = os.Getenv("EXAMPLE_PASSWORD_ENV"),
        Username: username,
        Password: password,
    })
    if err != nil {
        fmt.Println("Error creating InfluxDB Client: ", err.Error())
    }
    q := client.NewQuery("select * from cpu","db0","ns")
    if response, err := c.Query(q); err == nil && response.Error() == nil {
        fmt.Println("the result is: ",response.Results)
    } 
}