snmp_exporter - generator error (config.go:27:18: undefined: os.ReadFile)

[vjanandd]

can some one help on the below error

root@prometheus:~# go get github.com/prometheus/snmp_exporter/generator

github.com/prometheus/snmp_exporter/config

go/src/github.com/prometheus/snmp_exporter/config/config.go:27:18: undefined: os.ReadFile
root@prometheus:~#

[xprnvd]

I was able to get it working by using importing "io/ioutil"

During this incremental process, I had to change a couple of files. For example here's how my go/src/github.com/prometheus/snmp_exporter/config/config.go change looks

package config

import (
        "fmt"
        "regexp"
        "time"
        "io/ioutil"

        "github.com/gosnmp/gosnmp"
        "gopkg.in/yaml.v2"
)

func LoadFile(filename string) (*Config, error) {
        content, err := ioutil.ReadFile(filename)
        if err != nil {
                return nil, err
        }
        cfg := &Config{}
        err = yaml.UnmarshalStrict(content, cfg)
        if err != nil {
                return nil, err
        }
        return cfg, nil
}

Before taking this route, I would suggest checking the installed go version which for me was 1.12.9

This discussion may also help go-critic/go-critic#1019

[SuperQ]

io/ioutil is deprecated by Go. Go 1.17 is required for building this code.