Adding support for Kubernetes Clusters

Author: davidjumani

cloudstack/provider.go

@@ -89,6 +89,7 @@ func Provider() terraform.ResourceProvider {
 			"cloudstack_firewall":             resourceCloudStackFirewall(),
 			"cloudstack_instance":             resourceCloudStackInstance(),
 			"cloudstack_ipaddress":            resourceCloudStackIPAddress(),
+			"cloudstack_kubernetes_cluster":   resourceCloudStackKubernetesCluster(),
 			"cloudstack_loadbalancer_rule":    resourceCloudStackLoadBalancerRule(),
 			"cloudstack_network":              resourceCloudStackNetwork(),
 			"cloudstack_network_acl":          resourceCloudStackNetworkACL(),

cloudstack/resource_cloudstack_kubernetes_cluster.go

@@ -0,0 +1,304 @@
+//
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+//
+
+package cloudstack
+
+import (
+	"fmt"
+	"log"
+	"strings"
+
+	"github.com/apache/cloudstack-go/v2/cloudstack"
+	"github.com/hashicorp/terraform/helper/schema"
+)
+
+func resourceCloudStackKubernetesCluster() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceCloudStackKubernetesClusterCreate,
+		Read:   resourceCloudStackKubernetesClusterRead,
+		Update: resourceCloudStackKubernetesClusterUpdate,
+		Delete: resourceCloudStackKubernetesClusterDelete,
+		Importer: &schema.ResourceImporter{
+			State: importStatePassthrough,
+		},
+
+		Schema: map[string]*schema.Schema{
+			"name": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"zone": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"kubernetes_version": {
+				Type:     schema.TypeString,
+				Required: true,
+			},
+
+			"service_offering": {
+				Type:     schema.TypeString,
+				Required: true,
+			},
+
+			// Begin optional params
+			"size": {
+				Type:     schema.TypeInt,
+				Optional: true,
+				Default:  1,
+			},
+
+			"autoscaling_enabled": {
+				Type:     schema.TypeBool,
+				Optional: true,
+			},
+
+			"min_size": {
+				Type:     schema.TypeInt,
+				Optional: true,
+			},
+
+			"max_size": {
+				Type:     schema.TypeInt,
+				Optional: true,
+			},
+
+			"control_nodes_size": {
+				Type:     schema.TypeInt,
+				Optional: true,
+				Computed: true,
+				ForceNew: true, // For now
+			},
+
+			"description": {
+				Type:     schema.TypeString,
+				Optional: true,
+				Computed: true,
+			},
+
+			"keypair": {
+				Type:     schema.TypeString,
+				Optional: true,
+				ForceNew: true,
+			},
+
+			"network_id": {
+				Type:     schema.TypeString,
+				Optional: true,
+				Computed: true,
+				ForceNew: true,
+			},
+
+			"ip_address": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+
+			"project": {
+				Type:     schema.TypeString,
+				Optional: true,
+				ForceNew: true,
+			},
+		},
+	}
+}
+
+func resourceCloudStackKubernetesClusterCreate(d *schema.ResourceData, meta interface{}) error {
+	cs := meta.(*cloudstack.CloudStackClient)
+
+	name := d.Get("name").(string)
+	size := int64(d.Get("size").(int))
+	serviceOfferingID, e := retrieveID(cs, "service_offering", d.Get("service_offering").(string))
+	if e != nil {
+		return e.Error()
+	}
+	zoneID, e := retrieveID(cs, "zone", d.Get("zone").(string))
+	if e != nil {
+		return e.Error()
+	}
+	kubernetesVersionID, e := retrieveID(cs, "kubernetes_version", d.Get("kubernetes_version").(string))
+	if e != nil {
+		return e.Error()
+	}
+
+	// Create a new parameter struct
+	p := cs.Kubernetes.NewCreateKubernetesClusterParams(name, kubernetesVersionID, name, serviceOfferingID, size, zoneID)
+
+	// Set optional params
+	if description, ok := d.GetOk("description"); ok {
+		p.SetDescription(description.(string))
+	}
+	if keypair, ok := d.GetOk("keypair"); ok {
+		p.SetKeypair(keypair.(string))
+	}
+	if networkID, ok := d.GetOk("network_id"); ok {
+		p.SetNetworkid(networkID.(string))
+	}
+	if controlNodesSize, ok := d.GetOk("control_nodes_size"); ok {
+		p.SetControlnodes(int64(controlNodesSize.(int)))
+	}
+
+	// If there is a project supplied, we retrieve and set the project id
+	if err := setProjectid(p, cs, d); err != nil {
+		return err
+	}
+
+	log.Printf("[DEBUG] Creating Kubernetes Cluster %s", name)
+	r, err := cs.Kubernetes.CreateKubernetesCluster(p)
+	if err != nil {
+		return err
+	}
+
+	log.Printf("[DEBUG] Kubernetes Cluster %s successfully created", name)
+	d.SetId(r.Id)
+
+	if _, ok := d.GetOk("autoscaling_enabled"); ok {
+		err = autoscaleKubernetesCluster(d, meta)
+		if err != nil {
+			return err
+		}
+	}
+
+	return resourceCloudStackKubernetesClusterRead(d, meta)
+}
+
+func resourceCloudStackKubernetesClusterRead(d *schema.ResourceData, meta interface{}) error {
+	cs := meta.(*cloudstack.CloudStackClient)
+
+	log.Printf("[DEBUG] Retrieving Kubernetes Cluster %s", d.Get("name").(string))
+
+	// Get the Kubernetes Cluster details
+	cluster, count, err := cs.Kubernetes.GetKubernetesClusterByID(
+		d.Id(),
+		cloudstack.WithProject(d.Get("project").(string)),
+	)
+	if err != nil {
+		if count == 0 {
+			log.Printf("[DEBUG] Kubernetes Cluster %s does not longer exist", d.Get("name").(string))
+			d.SetId("")
+			return nil
+		}
+
+		return err
+	}
+
+	// Update the config
+	d.SetId(cluster.Id)
+	d.Set("name", cluster.Name)
+	d.Set("description", cluster.Description)
+	d.Set("control_nodes_size", cluster.Controlnodes)
+	d.Set("size", cluster.Size)
+	d.Set("autoscaling_enabled", cluster.Autoscalingenabled)
+	d.Set("min_size", cluster.Minsize)
+	d.Set("max_size", cluster.Maxsize)
+	d.Set("keypair", cluster.Keypair)
+	d.Set("network_id", cluster.Networkid)
+	d.Set("ip_address", cluster.Ipaddress)
+
+	setValueOrID(d, "kubernetes_version", cluster.Kubernetesversionname, cluster.Kubernetesversionid)
+	setValueOrID(d, "service_offering", cluster.Serviceofferingname, cluster.Serviceofferingid)
+	setValueOrID(d, "project", cluster.Project, cluster.Projectid)
+	setValueOrID(d, "zone", cluster.Zonename, cluster.Zoneid)
+
+	return nil
+}
+
+func autoscaleKubernetesCluster(d *schema.ResourceData, meta interface{}) error {
+	cs := meta.(*cloudstack.CloudStackClient)
+	p := cs.Kubernetes.NewScaleKubernetesClusterParams(d.Id())
+	p.SetAutoscalingenabled(d.Get("autoscaling_enabled").(bool))
+	p.SetMinsize(int64(d.Get("min_size").(int)))
+	p.SetMaxsize(int64(d.Get("max_size").(int)))
+	_, err := cs.Kubernetes.ScaleKubernetesCluster(p)
+	return err
+}
+
+func resourceCloudStackKubernetesClusterUpdate(d *schema.ResourceData, meta interface{}) error {
+	cs := meta.(*cloudstack.CloudStackClient)
+	d.Partial(true)
+
+	if d.HasChange("service_offering") || d.HasChange("size") {
+		p := cs.Kubernetes.NewScaleKubernetesClusterParams(d.Id())
+		serviceOfferingID, e := retrieveID(cs, "service_offering", d.Get("service_offering").(string))
+		if e != nil {
+			return e.Error()
+		}
+		p.SetServiceofferingid(serviceOfferingID)
+		p.SetSize(int64(d.Get("size").(int)))
+		_, err := cs.Kubernetes.ScaleKubernetesCluster(p)
+		if err != nil {
+			return fmt.Errorf(
+				"Error Scaling Kubernetes Cluster %s: %s", d.Id(), err)
+		}
+		d.SetPartial("service_offering")
+		d.SetPartial("size")
+	}
+
+	if d.HasChange("autoscaling_enabled") || d.HasChange("min_size") || d.HasChange("max_size") {
+		err := autoscaleKubernetesCluster(d, meta)
+		if err != nil {
+			return err
+		}
+		d.SetPartial("autoscaling_enabled")
+		d.SetPartial("min_size")
+		d.SetPartial("max_size")
+	}
+
+	if d.HasChange("kubernetes_version") {
+		kubernetesVersionID, e := retrieveID(cs, "kubernetes_version", d.Get("kubernetes_version").(string))
+		if e != nil {
+			return e.Error()
+		}
+		p := cs.Kubernetes.NewUpgradeKubernetesClusterParams(d.Id(), kubernetesVersionID)
+		_, err := cs.Kubernetes.UpgradeKubernetesCluster(p)
+		if err != nil {
+			return fmt.Errorf(
+				"Error Upgrading Kubernetes Cluster %s: %s", d.Id(), err)
+		}
+		d.SetPartial("kubernetes_version")
+	}
+
+	return resourceCloudStackKubernetesClusterRead(d, meta)
+}
+
+func resourceCloudStackKubernetesClusterDelete(d *schema.ResourceData, meta interface{}) error {
+	cs := meta.(*cloudstack.CloudStackClient)
+
+	// Create a new parameter struct
+	p := cs.Kubernetes.NewDeleteKubernetesClusterParams(d.Id())
+
+	// Delete the Kubernetes Cluster
+	_, err := cs.Kubernetes.DeleteKubernetesCluster(p)
+	if err != nil {
+		// This is a very poor way to be told the ID does no longer exist :(
+		if strings.Contains(err.Error(), fmt.Sprintf(
+			"Invalid parameter id value=%s due to incorrect long value format, "+
+				"or entity does not exist", d.Id())) {
+			return nil
+		}
+
+		return fmt.Errorf("Error deleting Kubernetes Cluster: %s", err)
+	}
+
+	return nil
+}

cloudstack/resources.go

@@ -70,12 +70,14 @@ func retrieveID(cs *cloudstack.CloudStackClient, name string, value string, opts
 	switch name {
 	case "disk_offering":
 		id, _, err = cs.DiskOffering.GetDiskOfferingID(value)
-	case "service_offering":
-		id, _, err = cs.ServiceOffering.GetServiceOfferingID(value)
+	case "kubernetes_version":
+		id, _, err = cs.Kubernetes.GetKubernetesSupportedVersionID(value)
 	case "network_offering":
 		id, _, err = cs.NetworkOffering.GetNetworkOfferingID(value)
 	case "project":
 		id, _, err = cs.Project.GetProjectID(value)
+	case "service_offering":
+		id, _, err = cs.ServiceOffering.GetServiceOfferingID(value)
 	case "vpc_offering":
 		id, _, err = cs.VPC.GetVPCOfferingID(value)
 	case "zone":

go.mod

@@ -1,7 +1,7 @@
 module github.com/terraform-providers/terraform-provider-cloudstack
 
 require (
-	github.com/apache/cloudstack-go/v2 v2.11.0
+	github.com/apache/cloudstack-go/v2 v2.13.1
 	github.com/go-ini/ini v1.40.0
 	github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e // indirect
 	github.com/hashicorp/go-multierror v1.0.0