provider/kubernetes: Add support for pod (#13571)

Add support for K8s pod

builtin/bins/provider-kubernetes/main.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"github.com/hashicorp/terraform/builtin/providers/kubernetes"
+	"github.com/hashicorp/terraform/plugin"
+)
+
+func main() {
+	plugin.Serve(&plugin.ServeOpts{
+		ProviderFunc: kubernetes.Provider,
+	})
+}

builtin/providers/kubernetes/diff_supress_funcs.go

@@ -0,0 +1,18 @@
+package kubernetes
+
+import (
+	"github.com/hashicorp/terraform/helper/schema"
+	"k8s.io/apimachinery/pkg/api/resource"
+)
+
+func suppressEquivalentResourceQuantity(k, old, new string, d *schema.ResourceData) bool {
+	oldQ, err := resource.ParseQuantity(old)
+	if err != nil {
+		return false
+	}
+	newQ, err := resource.ParseQuantity(new)
+	if err != nil {
+		return false
+	}
+	return oldQ.Cmp(newQ) == 0
+}

builtin/providers/kubernetes/provider.go

@@ -97,6 +97,7 @@ func Provider() terraform.ResourceProvider {
 			"kubernetes_namespace":                 resourceKubernetesNamespace(),
 			"kubernetes_persistent_volume":         resourceKubernetesPersistentVolume(),
 			"kubernetes_persistent_volume_claim":   resourceKubernetesPersistentVolumeClaim(),
+			"kubernetes_pod":                       resourceKubernetesPod(),
 			"kubernetes_resource_quota":            resourceKubernetesResourceQuota(),
 			"kubernetes_secret":                    resourceKubernetesSecret(),
 			"kubernetes_service":                   resourceKubernetesService(),

builtin/providers/kubernetes/resource_kubernetes_pod.go

@@ -0,0 +1,195 @@
+package kubernetes
+
+import (
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/hashicorp/terraform/helper/resource"
+	"github.com/hashicorp/terraform/helper/schema"
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	pkgApi "k8s.io/apimachinery/pkg/types"
+	api "k8s.io/kubernetes/pkg/api/v1"
+	kubernetes "k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
+)
+
+func resourceKubernetesPod() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceKubernetesPodCreate,
+		Read:   resourceKubernetesPodRead,
+		Update: resourceKubernetesPodUpdate,
+		Delete: resourceKubernetesPodDelete,
+		Exists: resourceKubernetesPodExists,
+		Importer: &schema.ResourceImporter{
+			State: schema.ImportStatePassthrough,
+		},
+		Schema: map[string]*schema.Schema{
+			"metadata": namespacedMetadataSchema("pod", true),
+			"spec": {
+				Type:        schema.TypeList,
+				Description: "Spec of the pod owned by the cluster",
+				Required:    true,
+				MaxItems:    1,
+				Elem: &schema.Resource{
+					Schema: podSpecFields(),
+				},
+			},
+		},
+	}
+}
+func resourceKubernetesPodCreate(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*kubernetes.Clientset)
+
+	metadata := expandMetadata(d.Get("metadata").([]interface{}))
+	spec, err := expandPodSpec(d.Get("spec").([]interface{}))
+	if err != nil {
+		return err
+	}
+
+	spec.AutomountServiceAccountToken = ptrToBool(false)
+
+	pod := api.Pod{
+		ObjectMeta: metadata,
+		Spec:       spec,
+	}
+
+	log.Printf("[INFO] Creating new pod: %#v", pod)
+	out, err := conn.CoreV1().Pods(metadata.Namespace).Create(&pod)
+
+	if err != nil {
+		return err
+	}
+	log.Printf("[INFO] Submitted new pod: %#v", out)
+
+	d.SetId(buildId(out.ObjectMeta))
+
+	stateConf := &resource.StateChangeConf{
+		Target:  []string{"Running"},
+		Pending: []string{"Pending"},
+		Timeout: 5 * time.Minute,
+		Refresh: func() (interface{}, string, error) {
+			out, err := conn.CoreV1().Pods(metadata.Namespace).Get(metadata.Name, metav1.GetOptions{})
+			if err != nil {
+				log.Printf("[ERROR] Received error: %#v", err)
+				return out, "Error", err
+			}
+
+			statusPhase := fmt.Sprintf("%v", out.Status.Phase)
+			log.Printf("[DEBUG] Pods %s status received: %#v", out.Name, statusPhase)
+			return out, statusPhase, nil
+		},
+	}
+	_, err = stateConf.WaitForState()
+	if err != nil {
+		return err
+	}
+	log.Printf("[INFO] Pod %s created", out.Name)
+
+	return resourceKubernetesPodRead(d, meta)
+}
+
+func resourceKubernetesPodUpdate(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*kubernetes.Clientset)
+	namespace, name := idParts(d.Id())
+	ops := patchMetadata("metadata.0.", "/metadata/", d)
+	if d.HasChange("spec") {
+		specOps, err := patchPodSpec("/spec", "spec.0.", d)
+		if err != nil {
+			return err
+		}
+		ops = append(ops, specOps...)
+	}
+	data, err := ops.MarshalJSON()
+	if err != nil {
+		return fmt.Errorf("Failed to marshal update operations: %s", err)
+	}
+
+	log.Printf("[INFO] Updating  pod %s: %s", d.Id(), ops)
+
+	out, err := conn.CoreV1().Pods(namespace).Patch(name, pkgApi.JSONPatchType, data)
+	if err != nil {
+		return err
+	}
+	log.Printf("[INFO] Submitted updated pod: %#v", out)
+
+	d.SetId(buildId(out.ObjectMeta))
+	return resourceKubernetesPodRead(d, meta)
+}
+
+func resourceKubernetesPodRead(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*kubernetes.Clientset)
+	namespace, name := idParts(d.Id())
+
+	log.Printf("[INFO] Reading pod %s", name)
+	pod, err := conn.CoreV1().Pods(namespace).Get(name, metav1.GetOptions{})
+	if err != nil {
+		log.Printf("[DEBUG] Received error: %#v", err)
+		return err
+	}
+	log.Printf("[INFO] Received pod: %#v", pod)
+
+	err = d.Set("metadata", flattenMetadata(pod.ObjectMeta))
+	if err != nil {
+		return err
+	}
+
+	podSpec, err := flattenPodSpec(pod.Spec)
+	if err != nil {
+		return err
+	}
+
+	err = d.Set("spec", podSpec)
+	if err != nil {
+		return err
+	}
+	return nil
+
+}
+
+func resourceKubernetesPodDelete(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*kubernetes.Clientset)
+	namespace, name := idParts(d.Id())
+	log.Printf("[INFO] Deleting pod: %#v", name)
+	err := conn.CoreV1().Pods(namespace).Delete(name, nil)
+	if err != nil {
+		return err
+	}
+
+	err = resource.Retry(1*time.Minute, func() *resource.RetryError {
+		out, err := conn.CoreV1().Pods(namespace).Get(name, metav1.GetOptions{})
+		if err != nil {
+			if statusErr, ok := err.(*errors.StatusError); ok && statusErr.ErrStatus.Code == 404 {
+				return nil
+			}
+			return resource.NonRetryableError(err)
+		}
+
+		log.Printf("[DEBUG] Current state of pod: %#v", out.Status.Phase)
+		e := fmt.Errorf("Pod %s still exists (%s)", name, out.Status.Phase)
+		return resource.RetryableError(e)
+	})
+	if err != nil {
+		return err
+	}
+
+	log.Printf("[INFO] Pod %s deleted", name)
+
+	d.SetId("")
+	return nil
+}
+
+func resourceKubernetesPodExists(d *schema.ResourceData, meta interface{}) (bool, error) {
+	conn := meta.(*kubernetes.Clientset)
+
+	namespace, name := idParts(d.Id())
+	log.Printf("[INFO] Checking pod %s", name)
+	_, err := conn.CoreV1().Pods(namespace).Get(name, metav1.GetOptions{})
+	if err != nil {
+		if statusErr, ok := err.(*errors.StatusError); ok && statusErr.ErrStatus.Code == 404 {
+			return false, nil
+		}
+		log.Printf("[DEBUG] Received error: %#v", err)
+	}
+	return true, err
+}