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client.go
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client.go
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package exec
import (
"fmt"
"io"
"os"
"os/exec"
)
// Client is a wrapper over the SSH connection/sessions.
type Client struct {
Name string
Path string
Env []string
cmd *exec.Cmd
stdout io.Reader
stderr io.Reader
running bool
}
func (c *Client) Run(shell string, env []string, cmdStr []string) error {
var err error
if c.running {
return fmt.Errorf("command already running")
}
cmd := exec.Command(shell, cmdStr...)
cmd.Dir = c.Path
cmd.Env = append(os.Environ(), env...)
c.cmd = cmd
c.stdout, err = cmd.StdoutPipe()
if err != nil {
return err
}
c.stderr, err = cmd.StderrPipe()
if err != nil {
return err
}
if err := c.cmd.Start(); err != nil {
return err
}
c.running = true
return nil
}
func (c *Client) Wait() error {
if !c.running {
return fmt.Errorf("trying to wait on stopped command")
}
err := c.cmd.Wait()
c.running = false
return err
}
func (c *Client) Close() error {
return nil
}
func (c *Client) Stderr() io.Reader {
return c.stderr
}
func (c *Client) Stdout() io.Reader {
return c.stdout
}
func (c *Client) Prefix() string {
return c.Name
}