346 lines
8.8 KiB
Go
346 lines
8.8 KiB
Go
package cloudstack
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import (
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"bytes"
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"fmt"
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"strconv"
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"strings"
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"github.com/hashicorp/terraform/helper/hashcode"
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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 resourceCloudStackPortForward() *schema.Resource {
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return &schema.Resource{
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Create: resourceCloudStackPortForwardCreate,
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Read: resourceCloudStackPortForwardRead,
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Update: resourceCloudStackPortForwardUpdate,
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Delete: resourceCloudStackPortForwardDelete,
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Schema: map[string]*schema.Schema{
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"ipaddress": &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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"managed": &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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"forward": &schema.Schema{
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Type: schema.TypeSet,
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Required: true,
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Elem: &schema.Resource{
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Schema: map[string]*schema.Schema{
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"protocol": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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},
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"private_port": &schema.Schema{
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Type: schema.TypeInt,
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Required: true,
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},
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"public_port": &schema.Schema{
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Type: schema.TypeInt,
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Required: true,
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},
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"virtual_machine": &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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},
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"uuid": &schema.Schema{
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Type: schema.TypeString,
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Computed: true,
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},
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},
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},
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Set: resourceCloudStackPortForwardHash,
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},
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},
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}
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}
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func resourceCloudStackPortForwardCreate(d *schema.ResourceData, meta interface{}) error {
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cs := meta.(*cloudstack.CloudStackClient)
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// Retrieve the ipaddress UUID
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ipaddressid, e := retrieveUUID(cs, "ipaddress", d.Get("ipaddress").(string))
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if e != nil {
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return e.Error()
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}
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// We need to set this upfront in order to be able to save a partial state
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d.SetId(ipaddressid)
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// Create all forwards that are configured
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if rs := d.Get("forward").(*schema.Set); rs.Len() > 0 {
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// Create an empty schema.Set to hold all forwards
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forwards := &schema.Set{
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F: resourceCloudStackPortForwardHash,
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}
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for _, forward := range rs.List() {
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// Create a single forward
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err := resourceCloudStackPortForwardCreateForward(d, meta, forward.(map[string]interface{}))
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// We need to update this first to preserve the correct state
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forwards.Add(forward)
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d.Set("forward", forwards)
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if err != nil {
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return err
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}
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}
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}
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return resourceCloudStackPortForwardRead(d, meta)
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}
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func resourceCloudStackPortForwardCreateForward(
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d *schema.ResourceData, meta interface{}, forward map[string]interface{}) error {
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cs := meta.(*cloudstack.CloudStackClient)
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// Make sure all required parameters are there
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if err := verifyPortForwardParams(d, forward); err != nil {
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return err
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}
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// Retrieve the virtual_machine UUID
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vm, _, err := cs.VirtualMachine.GetVirtualMachineByName(forward["virtual_machine"].(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.Firewall.NewCreatePortForwardingRuleParams(d.Id(), forward["private_port"].(int),
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forward["protocol"].(string), forward["public_port"].(int), vm.Id)
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// Set the network ID of the default network, needed when public IP address
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// is not associated with any Guest network yet (VPC case)
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p.SetNetworkid(vm.Nic[0].Networkid)
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// Do not open the firewall automatically in any case
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p.SetOpenfirewall(false)
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r, err := cs.Firewall.CreatePortForwardingRule(p)
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if err != nil {
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return err
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}
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forward["uuid"] = r.Id
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return nil
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}
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func resourceCloudStackPortForwardRead(d *schema.ResourceData, meta interface{}) error {
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cs := meta.(*cloudstack.CloudStackClient)
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// Create an empty schema.Set to hold all forwards
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forwards := &schema.Set{
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F: resourceCloudStackPortForwardHash,
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}
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// Read all forwards that are configured
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if rs := d.Get("forward").(*schema.Set); rs.Len() > 0 {
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for _, forward := range rs.List() {
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forward := forward.(map[string]interface{})
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id, ok := forward["uuid"]
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if !ok || id.(string) == "" {
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continue
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}
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// Get the forward
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r, count, err := cs.Firewall.GetPortForwardingRuleByID(id.(string))
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// If the count == 0, there is no object found for this UUID
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if err != nil {
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if count == 0 {
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forward["uuid"] = ""
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continue
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}
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return err
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}
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privPort, err := strconv.Atoi(r.Privateport)
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if err != nil {
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return err
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}
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pubPort, err := strconv.Atoi(r.Publicport)
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if err != nil {
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return err
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}
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// Update the values
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forward["protocol"] = r.Protocol
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forward["private_port"] = privPort
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forward["public_port"] = pubPort
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forward["virtual_machine"] = r.Virtualmachinename
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forwards.Add(forward)
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}
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}
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// If this is a managed resource, add all unknown forwards to dummy forwards
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managed := d.Get("managed").(bool)
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if managed {
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// Get all the forwards from the running environment
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p := cs.Firewall.NewListPortForwardingRulesParams()
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p.SetIpaddressid(d.Id())
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p.SetListall(true)
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r, err := cs.Firewall.ListPortForwardingRules(p)
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if err != nil {
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return err
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}
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// Add all UUIDs to the uuids map
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uuids := make(map[string]interface{}, len(r.PortForwardingRules))
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for _, r := range r.PortForwardingRules {
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uuids[r.Id] = r.Id
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}
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// Delete all expected UUIDs from the uuids map
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for _, forward := range forwards.List() {
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forward := forward.(map[string]interface{})
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for _, id := range forward["uuids"].(map[string]interface{}) {
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delete(uuids, id.(string))
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}
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}
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for uuid, _ := range uuids {
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// Make a dummy forward to hold the unknown UUID
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forward := map[string]interface{}{
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"protocol": "N/A",
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"private_port": 0,
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"public_port": 0,
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"virtual_machine": uuid,
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"uuid": uuid,
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}
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// Add the dummy forward to the forwards set
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forwards.Add(forward)
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}
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}
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if forwards.Len() > 0 {
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d.Set("forward", forwards)
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} else if !managed {
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d.SetId("")
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}
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return nil
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}
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func resourceCloudStackPortForwardUpdate(d *schema.ResourceData, meta interface{}) error {
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// Check if the forward set as a whole has changed
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if d.HasChange("forward") {
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o, n := d.GetChange("forward")
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ors := o.(*schema.Set).Difference(n.(*schema.Set))
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nrs := n.(*schema.Set).Difference(o.(*schema.Set))
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// Now first loop through all the old forwards and delete any obsolete ones
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for _, forward := range ors.List() {
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// Delete the forward as it no longer exists in the config
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err := resourceCloudStackPortForwardDeleteForward(d, meta, forward.(map[string]interface{}))
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if err != nil {
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return err
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}
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}
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// Make sure we save the state of the currently configured forwards
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forwards := o.(*schema.Set).Intersection(n.(*schema.Set))
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d.Set("forward", forwards)
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// Then loop through all the currently configured forwards and create the new ones
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for _, forward := range nrs.List() {
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err := resourceCloudStackPortForwardCreateForward(
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d, meta, forward.(map[string]interface{}))
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// We need to update this first to preserve the correct state
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forwards.Add(forward)
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d.Set("forward", forwards)
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if err != nil {
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return err
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}
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}
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}
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return resourceCloudStackPortForwardRead(d, meta)
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}
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func resourceCloudStackPortForwardDelete(d *schema.ResourceData, meta interface{}) error {
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// Delete all forwards
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if rs := d.Get("forward").(*schema.Set); rs.Len() > 0 {
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for _, forward := range rs.List() {
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// Delete a single forward
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err := resourceCloudStackPortForwardDeleteForward(d, meta, forward.(map[string]interface{}))
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// We need to update this first to preserve the correct state
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d.Set("forward", rs)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func resourceCloudStackPortForwardDeleteForward(
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d *schema.ResourceData, meta interface{}, forward map[string]interface{}) error {
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cs := meta.(*cloudstack.CloudStackClient)
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// Create the parameter struct
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p := cs.Firewall.NewDeletePortForwardingRuleParams(forward["uuid"].(string))
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// Delete the forward
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if _, err := cs.Firewall.DeletePortForwardingRule(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", forward["uuid"].(string))) {
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return err
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}
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}
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forward["uuid"] = ""
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return nil
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}
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func resourceCloudStackPortForwardHash(v interface{}) int {
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var buf bytes.Buffer
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m := v.(map[string]interface{})
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buf.WriteString(fmt.Sprintf(
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"%s-%d-%d-%s",
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m["protocol"].(string),
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m["private_port"].(int),
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m["public_port"].(int),
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m["virtual_machine"].(string)))
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return hashcode.String(buf.String())
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}
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func verifyPortForwardParams(d *schema.ResourceData, forward map[string]interface{}) error {
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protocol := forward["protocol"].(string)
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if protocol != "tcp" && protocol != "udp" {
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return fmt.Errorf(
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"%s is not a valid protocol. Valid options are 'tcp' and 'udp'", protocol)
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}
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return nil
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}
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