provider/openstack: Load Balancing Member Resource

This commit adds the openstack_lb_member_v1 resource. This resource models a
load balancing member which was previously coupled to the openstack_lb_pool_v1
resource.

By creating an actual member resource, load balancing members can now be
dynamically managed through terraform.

builtin/providers/openstack/provider.go

@@ -78,6 +78,7 @@ func Provider() terraform.ResourceProvider {
 			"openstack_fw_firewall_v1":                 resourceFWFirewallV1(),
 			"openstack_fw_policy_v1":                   resourceFWPolicyV1(),
 			"openstack_fw_rule_v1":                     resourceFWRuleV1(),
+			"openstack_lb_member_v1":                   resourceLBMemberV1(),
 			"openstack_lb_monitor_v1":                  resourceLBMonitorV1(),
 			"openstack_lb_pool_v1":                     resourceLBPoolV1(),
 			"openstack_lb_vip_v1":                      resourceLBVipV1(),

builtin/providers/openstack/resource_openstack_lb_member_v1.go

@@ -0,0 +1,214 @@
+package openstack
+
+import (
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/helper/schema"
+
+	"github.com/rackspace/gophercloud"
+	"github.com/rackspace/gophercloud/openstack/networking/v2/extensions/lbaas/members"
+)
+
+func resourceLBMemberV1() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceLBMemberV1Create,
+		Read:   resourceLBMemberV1Read,
+		Update: resourceLBMemberV1Update,
+		Delete: resourceLBMemberV1Delete,
+
+		Schema: map[string]*schema.Schema{
+			"region": &schema.Schema{
+				Type:        schema.TypeString,
+				Required:    true,
+				ForceNew:    true,
+				DefaultFunc: envDefaultFuncAllowMissing("OS_REGION_NAME"),
+			},
+			"tenant_id": &schema.Schema{
+				Type:     schema.TypeString,
+				Optional: true,
+				ForceNew: true,
+			},
+			"pool_id": &schema.Schema{
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+			"address": &schema.Schema{
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+			"port": &schema.Schema{
+				Type:     schema.TypeInt,
+				Required: true,
+				ForceNew: true,
+			},
+			"weight": &schema.Schema{
+				Type:     schema.TypeInt,
+				Optional: true,
+				Computed: true,
+			},
+			"admin_state_up": &schema.Schema{
+				Type:     schema.TypeBool,
+				Optional: true,
+				ForceNew: false,
+				Computed: true,
+			},
+		},
+	}
+}
+
+func resourceLBMemberV1Create(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+	networkingClient, err := config.networkingV2Client(d.Get("region").(string))
+	if err != nil {
+		return fmt.Errorf("Error creating OpenStack networking client: %s", err)
+	}
+
+	createOpts := members.CreateOpts{
+		TenantID:     d.Get("tenant_id").(string),
+		PoolID:       d.Get("pool_id").(string),
+		Address:      d.Get("address").(string),
+		ProtocolPort: d.Get("port").(int),
+	}
+
+	log.Printf("[DEBUG] Create Options: %#v", createOpts)
+	m, err := members.Create(networkingClient, createOpts).Extract()
+	if err != nil {
+		return fmt.Errorf("Error creating OpenStack LB member: %s", err)
+	}
+	log.Printf("[INFO] LB member ID: %s", m.ID)
+
+	log.Printf("[DEBUG] Waiting for OpenStack LB member (%s) to become available.", m.ID)
+
+	stateConf := &resource.StateChangeConf{
+		Target:     "ACTIVE",
+		Refresh:    waitForLBMemberActive(networkingClient, m.ID),
+		Timeout:    2 * time.Minute,
+		Delay:      5 * time.Second,
+		MinTimeout: 3 * time.Second,
+	}
+
+	_, err = stateConf.WaitForState()
+	if err != nil {
+		return err
+	}
+
+	d.SetId(m.ID)
+
+	return resourceLBMemberV1Read(d, meta)
+}
+
+func resourceLBMemberV1Read(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+	networkingClient, err := config.networkingV2Client(d.Get("region").(string))
+	if err != nil {
+		return fmt.Errorf("Error creating OpenStack networking client: %s", err)
+	}
+
+	m, err := members.Get(networkingClient, d.Id()).Extract()
+	if err != nil {
+		return CheckDeleted(d, err, "LB member")
+	}
+
+	log.Printf("[DEBUG] Retreived OpenStack LB member %s: %+v", d.Id(), m)
+
+	d.Set("weight", m.Weight)
+	d.Set("admin_state_up", m.AdminStateUp)
+
+	return nil
+}
+
+func resourceLBMemberV1Update(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+	networkingClient, err := config.networkingV2Client(d.Get("region").(string))
+	if err != nil {
+		return fmt.Errorf("Error creating OpenStack networking client: %s", err)
+	}
+
+	var updateOpts members.UpdateOpts
+	if d.HasChange("admin_state_up") {
+		asu := d.Get("admin_state_up").(bool)
+		updateOpts.AdminStateUp = asu
+	}
+
+	log.Printf("[DEBUG] Updating LB member %s with options: %+v", d.Id(), updateOpts)
+
+	_, err = members.Update(networkingClient, d.Id(), updateOpts).Extract()
+	if err != nil {
+		return fmt.Errorf("Error updating OpenStack LB member: %s", err)
+	}
+
+	return resourceLBMemberV1Read(d, meta)
+}
+
+func resourceLBMemberV1Delete(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+	networkingClient, err := config.networkingV2Client(d.Get("region").(string))
+	if err != nil {
+		return fmt.Errorf("Error creating OpenStack networking client: %s", err)
+	}
+
+	err = members.Delete(networkingClient, d.Id()).ExtractErr()
+	if err != nil {
+		CheckDeleted(d, err, "LB member")
+	}
+
+	stateConf := &resource.StateChangeConf{
+		Pending:    []string{"ACTIVE"},
+		Target:     "DELETED",
+		Refresh:    waitForLBMemberDelete(networkingClient, d.Id()),
+		Timeout:    2 * time.Minute,
+		Delay:      5 * time.Second,
+		MinTimeout: 3 * time.Second,
+	}
+
+	_, err = stateConf.WaitForState()
+	if err != nil {
+		return fmt.Errorf("Error deleting OpenStack LB member: %s", err)
+	}
+
+	d.SetId("")
+	return nil
+}
+
+func waitForLBMemberActive(networkingClient *gophercloud.ServiceClient, memberId string) resource.StateRefreshFunc {
+	return func() (interface{}, string, error) {
+		m, err := members.Get(networkingClient, memberId).Extract()
+		if err != nil {
+			return nil, "", err
+		}
+
+		log.Printf("[DEBUG] OpenStack LB member: %+v", m)
+		if m.Status == "ACTIVE" {
+			return m, "ACTIVE", nil
+		}
+
+		return m, m.Status, nil
+	}
+}
+
+func waitForLBMemberDelete(networkingClient *gophercloud.ServiceClient, memberId string) resource.StateRefreshFunc {
+	return func() (interface{}, string, error) {
+		log.Printf("[DEBUG] Attempting to delete OpenStack LB member %s", memberId)
+
+		m, err := members.Get(networkingClient, memberId).Extract()
+		if err != nil {
+			errCode, ok := err.(*gophercloud.UnexpectedResponseCodeError)
+			if !ok {
+				return m, "ACTIVE", err
+			}
+			if errCode.Actual == 404 {
+				log.Printf("[DEBUG] Successfully deleted OpenStack LB member %s", memberId)
+				return m, "DELETED", nil
+			}
+		}
+
+		log.Printf("[DEBUG] OpenStack LB member %s still active.", memberId)
+		return m, "ACTIVE", nil
+	}
+
+}

builtin/providers/openstack/resource_openstack_lb_member_v1_test.go

@@ -0,0 +1,138 @@
+package openstack
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/terraform"
+	"github.com/rackspace/gophercloud/openstack/networking/v2/extensions/lbaas/members"
+)
+
+func TestAccLBV1Member_basic(t *testing.T) {
+	var member members.Member
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckLBV1MemberDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: testAccLBV1Member_basic,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckLBV1MemberExists(t, "openstack_lb_member_v1.member_1", &member),
+				),
+			},
+			resource.TestStep{
+				Config: testAccLBV1Member_update,
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr("openstack_lb_member_v1.member_1", "admin_state_up", "false"),
+				),
+			},
+		},
+	})
+}
+
+func testAccCheckLBV1MemberDestroy(s *terraform.State) error {
+	config := testAccProvider.Meta().(*Config)
+	networkingClient, err := config.networkingV2Client(OS_REGION_NAME)
+	if err != nil {
+		return fmt.Errorf("(testAccCheckLBV1MemberDestroy) Error creating OpenStack networking client: %s", err)
+	}
+
+	for _, rs := range s.RootModule().Resources {
+		if rs.Type != "openstack_lb_member_v1" {
+			continue
+		}
+
+		_, err := members.Get(networkingClient, rs.Primary.ID).Extract()
+		if err == nil {
+			return fmt.Errorf("LB Member still exists")
+		}
+	}
+
+	return nil
+}
+
+func testAccCheckLBV1MemberExists(t *testing.T, n string, member *members.Member) resource.TestCheckFunc {
+	return func(s *terraform.State) error {
+		rs, ok := s.RootModule().Resources[n]
+		if !ok {
+			return fmt.Errorf("Not found: %s", n)
+		}
+
+		if rs.Primary.ID == "" {
+			return fmt.Errorf("No ID is set")
+		}
+
+		config := testAccProvider.Meta().(*Config)
+		networkingClient, err := config.networkingV2Client(OS_REGION_NAME)
+		if err != nil {
+			return fmt.Errorf("(testAccCheckLBV1MemberExists) Error creating OpenStack networking client: %s", err)
+		}
+
+		found, err := members.Get(networkingClient, rs.Primary.ID).Extract()
+		if err != nil {
+			return err
+		}
+
+		if found.ID != rs.Primary.ID {
+			return fmt.Errorf("Member not found")
+		}
+
+		*member = *found
+
+		return nil
+	}
+}
+
+var testAccLBV1Member_basic = fmt.Sprintf(`
+  resource "openstack_networking_network_v2" "network_1" {
+    name = "network_1"
+    admin_state_up = "true"
+  }
+
+  resource "openstack_networking_subnet_v2" "subnet_1" {
+    network_id = "${openstack_networking_network_v2.network_1.id}"
+    cidr = "192.168.199.0/24"
+    ip_version = 4
+  }
+
+  resource "openstack_lb_pool_v1" "pool_1" {
+    name = "tf_test_lb_pool"
+    protocol = "HTTP"
+    subnet_id = "${openstack_networking_subnet_v2.subnet_1.id}"
+    lb_method = "ROUND_ROBIN"
+  }
+
+	resource "openstack_lb_member_v1" "member_1" {
+		pool_id = "${openstack_lb_pool_v1.pool_1.id}"
+		address = "192.168.199.10"
+		port = 80
+	}`)
+
+var testAccLBV1Member_update = fmt.Sprintf(`
+  resource "openstack_networking_network_v2" "network_1" {
+    name = "network_1"
+    admin_state_up = "true"
+  }
+
+  resource "openstack_networking_subnet_v2" "subnet_1" {
+    network_id = "${openstack_networking_network_v2.network_1.id}"
+    cidr = "192.168.199.0/24"
+    ip_version = 4
+  }
+
+  resource "openstack_lb_pool_v1" "pool_1" {
+    name = "tf_test_lb_pool"
+    protocol = "HTTP"
+    subnet_id = "${openstack_networking_subnet_v2.subnet_1.id}"
+    lb_method = "ROUND_ROBIN"
+  }
+
+  	resource "openstack_lb_member_v1" "member_1" {
+		pool_id = "${openstack_lb_pool_v1.pool_1.id}"
+		address = "192.168.199.10"
+		port = 80
+		admin_state_up = false
+	}`)

builtin/providers/openstack/resource_openstack_lb_pool_v1_test.go

@@ -231,18 +231,18 @@ var testAccLBV1Pool_fullstack = fmt.Sprintf(`
 		subnet_id = "${openstack_networking_subnet_v2.subnet_1.id}"
 		lb_method = "ROUND_ROBIN"
 		monitor_ids = ["${openstack_lb_monitor_v1.monitor_1.id}"]
+	}
 
-		member {
-			address = "${openstack_compute_instance_v2.instance_1.access_ip_v4}"
-			port = 80
-			admin_state_up = "true"
-		}
+	resource "openstack_lb_member_v1" "member_1" {
+		pool_id = "${openstack_lb_pool_v1.pool_1.id}"
+		address = "${openstack_compute_instance_v2.instance_1.access_ip_v4}"
+		port = 80
+	}
 
-		member {
-			address = "${openstack_compute_instance_v2.instance_2.access_ip_v4}"
-			port = 80
-			admin_state_up = "true"
-		}
+	resource "openstack_lb_member_v1" "member_2" {
+		pool_id = "${openstack_lb_pool_v1.pool_1.id}"
+		address = "${openstack_compute_instance_v2.instance_2.access_ip_v4}"
+		port = 80
 	}
 
 	resource "openstack_lb_vip_v1" "vip_1" {