Merge pull request #21 from thetonymaster/loadbalancer-backend-addres…

…s-pool

Loadbalancer backend address pool

azurestack/provider.go

@@ -82,6 +82,7 @@ func Provider() terraform.ResourceProvider {
 			"azurestack_network_security_rule":     resourceArmNetworkSecurityRule(),
 			"azurestack_local_network_gateway":     resourceArmLocalNetworkGateway(),
 			"azurestack_lb":                        resourceArmLoadBalancer(),
+			"azurestack_lb_backend_address_pool":   resourceArmLoadBalancerBackendAddressPool(),
 			"azurestack_public_ip":                 resourceArmPublicIp(),
 			"azurestack_resource_group":            resourceArmResourceGroup(),
 			"azurestack_storage_account":           resourceArmStorageAccount(),

azurestack/resource_arm_loadbalancer_backend_address_pool.go

@@ -0,0 +1,245 @@
+package azurestack
+
+import (
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/Azure/azure-sdk-for-go/services/network/mgmt/2015-06-15/network"
+	"github.com/hashicorp/errwrap"
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/helper/schema"
+	"github.com/terraform-providers/terraform-provider-azurestack/azurestack/utils"
+)
+
+func resourceArmLoadBalancerBackendAddressPool() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceArmLoadBalancerBackendAddressPoolCreate,
+		Read:   resourceArmLoadBalancerBackendAddressPoolRead,
+		Delete: resourceArmLoadBalancerBackendAddressPoolDelete,
+		Importer: &schema.ResourceImporter{
+			State: loadBalancerSubResourceStateImporter,
+		},
+
+		Schema: map[string]*schema.Schema{
+			"name": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"resource_group_name": resourceGroupNameSchema(),
+
+			"loadbalancer_id": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"backend_ip_configurations": {
+				Type:     schema.TypeSet,
+				Computed: true,
+				Elem:     &schema.Schema{Type: schema.TypeString},
+				Set:      schema.HashString,
+			},
+
+			"load_balancing_rules": {
+				Type:     schema.TypeSet,
+				Computed: true,
+				Elem:     &schema.Schema{Type: schema.TypeString},
+				Set:      schema.HashString,
+			},
+		},
+	}
+}
+
+func resourceArmLoadBalancerBackendAddressPoolCreate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*ArmClient).loadBalancerClient
+	ctx := meta.(*ArmClient).StopContext
+
+	loadBalancerID := d.Get("loadbalancer_id").(string)
+	armMutexKV.Lock(loadBalancerID)
+	defer armMutexKV.Unlock(loadBalancerID)
+
+	loadBalancer, exists, err := retrieveLoadBalancerById(loadBalancerID, meta)
+	if err != nil {
+		return errwrap.Wrapf("Error Getting LoadBalancer By ID {{err}}", err)
+	}
+	if !exists {
+		d.SetId("")
+		log.Printf("[INFO] LoadBalancer %q not found. Removing from state", d.Get("name").(string))
+		return nil
+	}
+
+	backendAddressPools := append(*loadBalancer.LoadBalancerPropertiesFormat.BackendAddressPools, expandAzureRmLoadBalancerBackendAddressPools(d))
+	existingPool, existingPoolIndex, exists := findLoadBalancerBackEndAddressPoolByName(loadBalancer, d.Get("name").(string))
+	if exists {
+		if d.Get("name").(string) == *existingPool.Name {
+			// this pool is being updated/reapplied remove old copy from the slice
+			backendAddressPools = append(backendAddressPools[:existingPoolIndex], backendAddressPools[existingPoolIndex+1:]...)
+		}
+	}
+
+	loadBalancer.LoadBalancerPropertiesFormat.BackendAddressPools = &backendAddressPools
+	resGroup, loadBalancerName, err := resourceGroupAndLBNameFromId(d.Get("loadbalancer_id").(string))
+	if err != nil {
+		return fmt.Errorf("Error parsing LoadBalancer Name and Group: %+v", err)
+	}
+
+	future, err := client.CreateOrUpdate(ctx, resGroup, loadBalancerName, *loadBalancer)
+	if err != nil {
+		return fmt.Errorf("Error Creating/Updating LoadBalancer %q (Resource Group %q): %+v", loadBalancerName, resGroup, err)
+	}
+
+	err = future.WaitForCompletion(ctx, client.Client)
+	if err != nil {
+		return fmt.Errorf("Error Creating/Updating LoadBalancer %q (Resource Group %q): %+v", loadBalancerName, resGroup, err)
+	}
+
+	read, err := client.Get(ctx, resGroup, loadBalancerName, "")
+	if err != nil {
+		return fmt.Errorf("Error retrieving Load Balancer %q (Resource Group %q): %+v", loadBalancerName, resGroup, err)
+	}
+	if read.ID == nil {
+		return fmt.Errorf("Cannot read LoadBalancer %q (Resource Group %q) ID", loadBalancerName, resGroup)
+	}
+
+	if read.LoadBalancerPropertiesFormat == nil {
+		return fmt.Errorf("Error creating LoadBalancer (%q Resource Group %q)", loadBalancerName, resGroup)
+	}
+
+	var poolId string
+	for _, BackendAddressPool := range *(*read.LoadBalancerPropertiesFormat).BackendAddressPools {
+		if *BackendAddressPool.Name == d.Get("name").(string) {
+			poolId = *BackendAddressPool.ID
+		}
+	}
+
+	if poolId == "" {
+		return fmt.Errorf("Cannot find created LoadBalancer Backend Address Pool ID %q", poolId)
+	}
+
+	d.SetId(poolId)
+
+	// TODO: is this still needed?
+	log.Printf("[DEBUG] Waiting for LoadBalancer (%s) to become available", loadBalancerName)
+	stateConf := &resource.StateChangeConf{
+		Pending: []string{"Accepted", "Updating"},
+		Target:  []string{"Succeeded"},
+		Refresh: loadbalancerStateRefreshFunc(ctx, client, resGroup, loadBalancerName),
+		Timeout: 10 * time.Minute,
+	}
+	if _, err := stateConf.WaitForState(); err != nil {
+		return fmt.Errorf("Error waiting for LoadBalancer (%q Resource Group %q) to become available: %+v", loadBalancerName, resGroup, err)
+	}
+
+	return resourceArmLoadBalancerBackendAddressPoolRead(d, meta)
+}
+
+func resourceArmLoadBalancerBackendAddressPoolRead(d *schema.ResourceData, meta interface{}) error {
+	id, err := parseAzureResourceID(d.Id())
+	if err != nil {
+		return err
+	}
+	name := id.Path["backendAddressPools"]
+
+	loadBalancer, exists, err := retrieveLoadBalancerById(d.Get("loadbalancer_id").(string), meta)
+	if err != nil {
+		return fmt.Errorf("Error retrieving Load Balancer by ID: %+v", err)
+	}
+	if !exists {
+		d.SetId("")
+		log.Printf("[INFO] LoadBalancer %q not found. Removing from state", name)
+		return nil
+	}
+
+	config, _, exists := findLoadBalancerBackEndAddressPoolByName(loadBalancer, name)
+	if !exists {
+		d.SetId("")
+		log.Printf("[INFO] LoadBalancer Backend Address Pool %q not found. Removing from state", name)
+		return nil
+	}
+
+	d.Set("name", config.Name)
+	d.Set("resource_group_name", id.ResourceGroup)
+
+	var backendIpConfigurations []string
+	var loadBalancingRules []string
+
+	if props := config.BackendAddressPoolPropertiesFormat; props != nil {
+		if configs := props.BackendIPConfigurations; configs != nil {
+			for _, backendConfig := range *configs {
+				backendIpConfigurations = append(backendIpConfigurations, *backendConfig.ID)
+			}
+		}
+
+		if rules := props.LoadBalancingRules; rules != nil {
+			for _, rule := range *rules {
+				loadBalancingRules = append(loadBalancingRules, *rule.ID)
+			}
+		}
+	}
+
+	d.Set("backend_ip_configurations", backendIpConfigurations)
+	d.Set("load_balancing_rules", loadBalancingRules)
+
+	return nil
+}
+
+func resourceArmLoadBalancerBackendAddressPoolDelete(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*ArmClient).loadBalancerClient
+	ctx := meta.(*ArmClient).StopContext
+
+	loadBalancerID := d.Get("loadbalancer_id").(string)
+	armMutexKV.Lock(loadBalancerID)
+	defer armMutexKV.Unlock(loadBalancerID)
+
+	loadBalancer, exists, err := retrieveLoadBalancerById(loadBalancerID, meta)
+	if err != nil {
+		return fmt.Errorf("Error retrieving Load Balancer by ID: %+v", err)
+	}
+	if !exists {
+		d.SetId("")
+		return nil
+	}
+
+	_, index, exists := findLoadBalancerBackEndAddressPoolByName(loadBalancer, d.Get("name").(string))
+	if !exists {
+		return nil
+	}
+
+	oldBackEndPools := *loadBalancer.LoadBalancerPropertiesFormat.BackendAddressPools
+	newBackEndPools := append(oldBackEndPools[:index], oldBackEndPools[index+1:]...)
+	loadBalancer.LoadBalancerPropertiesFormat.BackendAddressPools = &newBackEndPools
+
+	resGroup, loadBalancerName, err := resourceGroupAndLBNameFromId(d.Get("loadbalancer_id").(string))
+	if err != nil {
+		return errwrap.Wrapf("Error Getting LoadBalancer Name and Group: {{err}}", err)
+	}
+
+	future, err := client.CreateOrUpdate(ctx, resGroup, loadBalancerName, *loadBalancer)
+	if err != nil {
+		return fmt.Errorf("Error Creating/Updating LoadBalancer: %+v", err)
+	}
+
+	err = future.WaitForCompletion(ctx, client.Client)
+	if err != nil {
+		return fmt.Errorf("Error waiting for the completion for the LoadBalancer: %+v", err)
+	}
+
+	read, err := client.Get(ctx, resGroup, loadBalancerName, "")
+	if err != nil {
+		return fmt.Errorf("Error retrieving the LoadBalancer %q (Resource Group %q): %+v", loadBalancerName, resGroup, err)
+	}
+	if read.ID == nil {
+		return fmt.Errorf("Cannot read LoadBalancer %q (resource group %q) ID", loadBalancerName, resGroup)
+	}
+
+	return nil
+}
+
+func expandAzureRmLoadBalancerBackendAddressPools(d *schema.ResourceData) network.BackendAddressPool {
+	return network.BackendAddressPool{
+		Name: utils.String(d.Get("name").(string)),
+	}
+}