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67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
package cmd
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import (
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"fmt"
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"io"
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"context"
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"github.com/jinzhu/copier"
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"github.com/mitchellh/mapstructure"
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"github.com/pkg/errors"
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"github.com/problame/go-netssh"
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"time"
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)
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type SSHStdinserverConnecter struct {
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Host string
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User string
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Port uint16
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IdentityFile string `mapstructure:"identity_file"`
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TransportOpenCommand []string `mapstructure:"transport_open_command"`
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SSHCommand string `mapstructure:"ssh_command"`
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Options []string
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DialTimeout string `mapstructure:"dial_timeout"`
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dialTimeout time.Duration
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}
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func parseSSHStdinserverConnecter(i map[string]interface{}) (c *SSHStdinserverConnecter, err error) {
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c = &SSHStdinserverConnecter{}
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if err = mapstructure.Decode(i, c); err != nil {
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err = errors.New(fmt.Sprintf("could not parse ssh transport: %s", err))
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return nil, err
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}
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if c.DialTimeout != "" {
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c.dialTimeout, err = time.ParseDuration(c.DialTimeout)
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if err != nil {
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return nil, errors.Wrap(err, "cannot parse dial_timeout")
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}
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} else {
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c.dialTimeout = 10 * time.Second
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}
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// TODO assert fields are filled
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return
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}
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func (c *SSHStdinserverConnecter) Connect() (rwc io.ReadWriteCloser, err error) {
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var endpoint netssh.Endpoint
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if err = copier.Copy(&endpoint, c); err != nil {
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return nil, errors.WithStack(err)
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}
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var dialCtx context.Context
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dialCtx, dialCancel := context.WithTimeout(context.TODO(), c.dialTimeout) // context.TODO tied to error handling below
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defer dialCancel()
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if rwc, err = netssh.Dial(dialCtx, endpoint); err != nil {
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if err == context.DeadlineExceeded {
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err = errors.Errorf("dial_timeout of %s exceeded", c.dialTimeout)
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}
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err = errors.WithStack(err)
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return
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}
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return
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}
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