279 lines
7.3 KiB
Go
279 lines
7.3 KiB
Go
package cloudstack
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import (
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"crypto/sha1"
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"encoding/base64"
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"encoding/hex"
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"fmt"
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"log"
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"strings"
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"github.com/hashicorp/terraform/helper/schema"
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"github.com/xanzy/go-cloudstack/cloudstack"
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)
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func resourceCloudStackInstance() *schema.Resource {
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return &schema.Resource{
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Create: resourceCloudStackInstanceCreate,
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Read: resourceCloudStackInstanceRead,
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Update: resourceCloudStackInstanceUpdate,
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Delete: resourceCloudStackInstanceDelete,
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Schema: map[string]*schema.Schema{
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"name": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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},
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"display_name": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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},
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"service_offering": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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},
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"network": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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ForceNew: true,
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},
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"ipaddress": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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Computed: true,
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ForceNew: true,
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},
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"template": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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},
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"zone": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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},
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"user_data": &schema.Schema{
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Type: schema.TypeString,
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Optional: true,
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ForceNew: true,
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StateFunc: func(v interface{}) string {
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switch v.(type) {
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case string:
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hash := sha1.Sum([]byte(v.(string)))
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return hex.EncodeToString(hash[:])
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default:
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return ""
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}
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},
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},
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"expunge": &schema.Schema{
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Type: schema.TypeBool,
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Optional: true,
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Default: false,
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},
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},
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}
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}
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func resourceCloudStackInstanceCreate(d *schema.ResourceData, meta interface{}) error {
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cs := meta.(*cloudstack.CloudStackClient)
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// Retrieve the service_offering UUID
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serviceofferingid, e := retrieveUUID(cs, "service_offering", d.Get("service_offering").(string))
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if e != nil {
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return e.Error()
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}
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// Retrieve the template UUID
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templateid, e := retrieveUUID(cs, "template", d.Get("template").(string))
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if e != nil {
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return e.Error()
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}
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// Retrieve the zone object
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zone, _, err := cs.Zone.GetZoneByName(d.Get("zone").(string))
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if err != nil {
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return err
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}
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// Create a new parameter struct
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p := cs.VirtualMachine.NewDeployVirtualMachineParams(serviceofferingid, templateid, zone.Id)
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// Set the name
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name := d.Get("name").(string)
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p.SetName(name)
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// Set the display name
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if displayname, ok := d.GetOk("display_name"); ok {
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p.SetDisplayname(displayname.(string))
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} else {
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p.SetDisplayname(name)
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}
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if zone.Networktype == "Advanced" {
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// Retrieve the network UUID
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networkid, e := retrieveUUID(cs, "network", d.Get("network").(string))
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if e != nil {
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return e.Error()
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}
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// Set the default network ID
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p.SetNetworkids([]string{networkid})
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}
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// If there is a ipaddres supplied, add it to the parameter struct
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if ipaddres, ok := d.GetOk("ipaddress"); ok {
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p.SetIpaddress(ipaddres.(string))
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}
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// If the user data contains any info, it needs to be base64 encoded and
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// added to the parameter struct
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if userData, ok := d.GetOk("user_data"); ok {
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ud := base64.StdEncoding.EncodeToString([]byte(userData.(string)))
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if len(ud) > 2048 {
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return fmt.Errorf(
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"The supplied user_data contains %d bytes after encoding, "+
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"this exeeds the limit of 2048 bytes", len(ud))
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}
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p.SetUserdata(ud)
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}
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// Create the new instance
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r, err := cs.VirtualMachine.DeployVirtualMachine(p)
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if err != nil {
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return fmt.Errorf("Error creating the new instance %s: %s", name, err)
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}
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d.SetId(r.Id)
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return resourceCloudStackInstanceRead(d, meta)
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}
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func resourceCloudStackInstanceRead(d *schema.ResourceData, meta interface{}) error {
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cs := meta.(*cloudstack.CloudStackClient)
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// Get the virtual machine details
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vm, count, err := cs.VirtualMachine.GetVirtualMachineByID(d.Id())
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if err != nil {
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if count == 0 {
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log.Printf("[DEBUG] Instance %s does no longer exist", d.Get("name").(string))
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// Clear out all details so it's obvious the instance is gone
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d.SetId("")
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return nil
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}
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return err
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}
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// Update the config
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d.Set("name", vm.Name)
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d.Set("display_name", vm.Displayname)
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d.Set("service_offering", vm.Serviceofferingname)
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d.Set("network", vm.Nic[0].Networkname)
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d.Set("ipaddress", vm.Nic[0].Ipaddress)
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d.Set("template", vm.Templatename)
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d.Set("zone", vm.Zonename)
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return nil
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}
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func resourceCloudStackInstanceUpdate(d *schema.ResourceData, meta interface{}) error {
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cs := meta.(*cloudstack.CloudStackClient)
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d.Partial(true)
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name := d.Get("name").(string)
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// Check if the display name is changed and if so, update the virtual machine
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if d.HasChange("display_name") {
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log.Printf("[DEBUG] Display name changed for %s, starting update", name)
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// Create a new parameter struct
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p := cs.VirtualMachine.NewUpdateVirtualMachineParams(d.Id())
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// Set the new display name
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p.SetDisplayname(d.Get("display_name").(string))
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// Update the display name
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_, err := cs.VirtualMachine.UpdateVirtualMachine(p)
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if err != nil {
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return fmt.Errorf(
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"Error updating the display name for instance %s: %s", name, err)
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}
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d.SetPartial("display_name")
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}
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// Check if the service offering is changed and if so, update the offering
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if d.HasChange("service_offering") {
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log.Printf("[DEBUG] Service offering changed for %s, starting update", name)
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// Retrieve the service_offering UUID
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serviceofferingid, e := retrieveUUID(cs, "service_offering", d.Get("service_offering").(string))
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if e != nil {
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return e.Error()
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}
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// Create a new parameter struct
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p := cs.VirtualMachine.NewChangeServiceForVirtualMachineParams(d.Id(), serviceofferingid)
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// Before we can actually change the service offering, the virtual machine must be stopped
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_, err := cs.VirtualMachine.StopVirtualMachine(cs.VirtualMachine.NewStopVirtualMachineParams(d.Id()))
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if err != nil {
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return fmt.Errorf(
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"Error stopping instance %s before changing service offering: %s", name, err)
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}
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// Change the service offering
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_, err = cs.VirtualMachine.ChangeServiceForVirtualMachine(p)
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if err != nil {
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return fmt.Errorf(
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"Error changing the service offering for instance %s: %s", name, err)
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}
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// Start the virtual machine again
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_, err = cs.VirtualMachine.StartVirtualMachine(cs.VirtualMachine.NewStartVirtualMachineParams(d.Id()))
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if err != nil {
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return fmt.Errorf(
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"Error starting instance %s after changing service offering: %s", name, err)
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}
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d.SetPartial("service_offering")
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}
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d.Partial(false)
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return resourceCloudStackInstanceRead(d, meta)
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}
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func resourceCloudStackInstanceDelete(d *schema.ResourceData, meta interface{}) error {
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cs := meta.(*cloudstack.CloudStackClient)
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// Create a new parameter struct
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p := cs.VirtualMachine.NewDestroyVirtualMachineParams(d.Id())
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if d.Get("expunge").(bool) {
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p.SetExpunge(true)
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}
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log.Printf("[INFO] Destroying instance: %s", d.Get("name").(string))
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if _, err := cs.VirtualMachine.DestroyVirtualMachine(p); err != nil {
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// This is a very poor way to be told the UUID does no longer exist :(
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if strings.Contains(err.Error(), fmt.Sprintf(
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"Invalid parameter id value=%s due to incorrect long value format, "+
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"or entity does not exist", d.Id())) {
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return nil
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}
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return fmt.Errorf("Error destroying instance: %s", err)
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}
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return nil
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}
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