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provider/cloudstack: do not force a new resource when updating instance user_data

This commit is contained in:
Joakim Sernbrant 2016-06-30 12:24:18 +02:00
parent 124e0906e1
commit 1b4c1ab83a
1 changed files with 48 additions and 21 deletions
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69
builtin/providers/cloudstack/resource_cloudstack_instance.go
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@ -122,7 +122,6 @@ func resourceCloudStackInstance() *schema.Resource {
"user_data": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
StateFunc: func(v interface{}) string {
switch v.(type) {
case string:
@ -252,25 +251,9 @@ func resourceCloudStackInstanceCreate(d *schema.ResourceData, meta interface{})
p.SetKeypair(keypair.(string))
}
// If the user data contains any info, it needs to be base64 encoded and
// added to the parameter struct
if userData, ok := d.GetOk("user_data"); ok {
ud := base64.StdEncoding.EncodeToString([]byte(userData.(string)))
// deployVirtualMachine uses POST by default, so max userdata is 32K
maxUD := 32768
if cs.HTTPGETOnly {
// deployVirtualMachine using GET instead, so max userdata is 2K
maxUD = 2048
}
if len(ud) > maxUD {
return fmt.Errorf(
"The supplied user_data contains %d bytes after encoding, "+
"this exeeds the limit of %d bytes", len(ud), maxUD)
}
if ud, err := getUserData(d, cs); err != nil {
return err
} else if len(ud) > 0 {
p.SetUserdata(ud)
}
@ -403,7 +386,7 @@ func resourceCloudStackInstanceUpdate(d *schema.ResourceData, meta interface{})
}
// Attributes that require reboot to update
if d.HasChange("name") || d.HasChange("service_offering") || d.HasChange("affinity_group_ids") || d.HasChange("affinity_group_names") || d.HasChange("keypair") {
if d.HasChange("name") || d.HasChange("service_offering") || d.HasChange("affinity_group_ids") || d.HasChange("affinity_group_names") || d.HasChange("keypair") || d.HasChange("user_data") {
// Before we can actually make these changes, the virtual machine must be stopped
_, err := cs.VirtualMachine.StopVirtualMachine(
cs.VirtualMachine.NewStopVirtualMachineParams(d.Id()))
@ -494,6 +477,24 @@ func resourceCloudStackInstanceUpdate(d *schema.ResourceData, meta interface{})
d.SetPartial("keypair")
}
if d.HasChange("user_data") {
log.Printf("[DEBUG] user_data changed for %s, starting update", name)
ud, err := getUserData(d, cs)
if err != nil {
return err
}
p := cs.VirtualMachine.NewUpdateVirtualMachineParams(d.Id())
p.SetUserdata(ud)
_, err = cs.VirtualMachine.UpdateVirtualMachine(p)
if err != nil {
return fmt.Errorf(
"Error updating user_data for instance %s: %s", name, err)
}
d.SetPartial("user_data")
}
// Start the virtual machine again
_, err = cs.VirtualMachine.StartVirtualMachine(
cs.VirtualMachine.NewStartVirtualMachineParams(d.Id()))
@ -531,3 +532,29 @@ func resourceCloudStackInstanceDelete(d *schema.ResourceData, meta interface{})
return nil
}
// getUserData returns user_data as a base64 encoded string. An empty
// string is returned if unset.
func getUserData(d *schema.ResourceData, cs *cloudstack.CloudStackClient) (string, error) {
if userData, ok := d.GetOk("user_data"); ok {
ud := base64.StdEncoding.EncodeToString([]byte(userData.(string)))
// deployVirtualMachine uses POST by default, so max userdata is 32K
maxUD := 32768
if cs.HTTPGETOnly {
// deployVirtualMachine using GET instead, so max userdata is 2K
maxUD = 2048
}
if len(ud) > maxUD {
return "", fmt.Errorf(
"The supplied user_data contains %d bytes after encoding, "+
"this exeeds the limit of %d bytes", len(ud), maxUD)
}
return ud, nil
}
return "", nil
}