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ipmitool.go
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ipmitool.go
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package ipmitool
import (
"bytes"
"fmt"
"os/exec"
)
const (
ipmitoolCommand = "ipmitool"
)
// NewClient returns a new IPMI client
// Port 0 will use the default ipmi port (623)
func NewClient(addr string, port uint16, username, password string) (*Client, error) {
if port == 0 {
port = 623
}
cl := &Client{
addr: addr,
port: port,
user: username,
password: password,
}
cl.Power = NewPower(cl)
return cl, nil
}
// Client represents an IPMI client
type Client struct {
addr string
port uint16
user string
password string
Power *Power
}
// getBaseParam returns the command parameters for the ipmitool command
// sets up the ipmitool command with host, user and password parameters
func (cl *Client) getBaseParam() []string {
params := []string{
"-H",
cl.addr,
}
if cl.user != "" {
params = append(params, "-U", cl.user)
}
if cl.password != "" {
params = append(params, "-P", cl.password)
}
return params
}
// execute executes the provided command and returns the stdout, stderr and a potential error
// error is nil when command is successfully executed but returns an error condition.
// Revert to stderr for error response from the command
func (cl *Client) execute(args []string) (string, error) {
cmd := exec.Command(ipmitoolCommand, args...)
var outBuf, errBuf bytes.Buffer
cmd.Stdout = &outBuf
cmd.Stderr = &errBuf
err := cmd.Run()
if err != nil {
return "", fmt.Errorf("Failed to execute ipmitool command: %w : %s", err, errBuf.String())
}
return outBuf.String(), nil
}