GO - Unknown error on executing a command via ssh connection - ssh

Question

I'm trying to execute a command via session.Run() function over a ssh connection. So far I can successfully execute some commands but on others I keep getting the following error: "Process exited with: 1. Reason was: () exit status 1"
func (p *project) connect(config *ssh.ClientConfig) {
log.Printf("Trying connection...\n")
conn, err := ssh.Dial("tcp", fmt.Sprintf("%s:%s", p.hostname.name, p.port.name), config)
checkError("Failed to dial: ", err)
log.Printf("Connection established.\n")
for step := range p.typ.program.setup {
p.install(step, conn)
}
}
func (p *project) install(step int, conn *ssh.Client) {
session, err := conn.NewSession()
checkError("Failed to build session: ", err)
defer session.Close()
var stdoutBuf bytes.Buffer
session.Stdout = &stdoutBuf
log.Printf("Executing command: %s", p.typ.program.setup[step])
if err := session.Run(p.typ.program.setup[step]); err != nil {
log.Println(session.Stdout)
log.Fatal("Error on command execution", err.Error())
}
}
// That would be an example of a command which returns me an error
// "cd ~/www/www/ && git commit -m 'on the beginning was the commit'"
// That comes inside a slice on p.typ.program.setup accessed by the step(index).
The command output (session.Stdout) is the one i expect:
"# On branch master nothing to commit, working directory clean"
And just to note I already tried to execute the command directly on the console and it works just fine.
So, the code seems to be okay, the command ran on the remote but I still have an error no matter what.
Does anyone have a clue about why is that happening?
Thanks in advance.

Answer 1

Maybe my library will helps in your case: https://github.com/shagabutdinov/shell; it covers basic cases of running ssh commands in one session.
Try following:
handler := func(outputType int, message string) {
if(outputType == shell.Stdout) {
log.Println("stdout: ", message)
} else if(outputType == shell.Stdout) {
log.Println("stderr: ", message)
}
}
key, err := ssh.ParsePrivateKey([]byte(YOUR_PRIVATE_KEY))
if(err != nil) {
panic(err)
}
auth := []ssh.AuthMethod{ssh.PublicKeys(key)}
shell = shell.NewRemote(shell.RemoteConfig{
Host: "root#example.com:22",
Auth: auth,
})
if(err != nil) {
panic(err)
}
status, err := shell.Run("cd ~/www/www/", handler)
if(err != nil) {
panic(err)
}
status, err := shell.Run("git commit -m 'on the beginning was the commit'", handler)
if(err != nil) {
panic(err)
}
if(status == 0) {
console.log("command executed successfully")
} else {
console.log("command execution failed")
}