73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
package common
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"time"
|
|
|
|
"code.google.com/p/go.crypto/ssh"
|
|
"github.com/awslabs/aws-sdk-go/service/ec2"
|
|
"github.com/mitchellh/multistep"
|
|
)
|
|
|
|
// SSHAddress returns a function that can be given to the SSH communicator
|
|
// for determining the SSH address based on the instance DNS name.
|
|
func SSHAddress(e *ec2.EC2, port int, private bool) func(multistep.StateBag) (string, error) {
|
|
return func(state multistep.StateBag) (string, error) {
|
|
for j := 0; j < 2; j++ {
|
|
var host string
|
|
i := state.Get("instance").(*ec2.Instance)
|
|
if *i.VPCID != "" {
|
|
if *i.PublicIPAddress != "" && !private {
|
|
host = *i.PublicIPAddress
|
|
} else {
|
|
host = *i.PrivateIPAddress
|
|
}
|
|
} else if *i.PublicDNSName != "" {
|
|
host = *i.PublicDNSName
|
|
}
|
|
|
|
if host != "" {
|
|
return fmt.Sprintf("%s:%d", host, port), nil
|
|
}
|
|
|
|
r, err := e.DescribeInstances(&ec2.DescribeInstancesInput{
|
|
InstanceIDs: []*string{i.InstanceID},
|
|
})
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if len(r.Reservations) == 0 || len(r.Reservations[0].Instances) == 0 {
|
|
return "", fmt.Errorf("instance not found: %s", *i.InstanceID)
|
|
}
|
|
|
|
state.Put("instance", &r.Reservations[0].Instances[0])
|
|
time.Sleep(1 * time.Second)
|
|
}
|
|
|
|
return "", errors.New("couldn't determine IP address for instance")
|
|
}
|
|
}
|
|
|
|
// SSHConfig returns a function that can be used for the SSH communicator
|
|
// config for connecting to the instance created over SSH using the generated
|
|
// private key.
|
|
func SSHConfig(username string) func(multistep.StateBag) (*ssh.ClientConfig, error) {
|
|
return func(state multistep.StateBag) (*ssh.ClientConfig, error) {
|
|
privateKey := state.Get("privateKey").(string)
|
|
|
|
signer, err := ssh.ParsePrivateKey([]byte(privateKey))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Error setting up SSH config: %s", err)
|
|
}
|
|
|
|
return &ssh.ClientConfig{
|
|
User: username,
|
|
Auth: []ssh.AuthMethod{
|
|
ssh.PublicKeys(signer),
|
|
},
|
|
}, nil
|
|
}
|
|
}
|