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Add support for K8s pod #13571

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Jun 8, 2017
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12 changes: 12 additions & 0 deletions builtin/bins/provider-kubernetes/main.go
Original file line number Diff line number Diff line change
@@ -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,
})
}
18 changes: 18 additions & 0 deletions builtin/providers/kubernetes/diff_supress_funcs.go
Original file line number Diff line number Diff line change
@@ -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
}
1 change: 1 addition & 0 deletions builtin/providers/kubernetes/provider.go
Original file line number Diff line number Diff line change
Expand Up @@ -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(),
Expand Down
195 changes: 195 additions & 0 deletions builtin/providers/kubernetes/resource_kubernetes_pod.go
Original file line number Diff line number Diff line change
@@ -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
}
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