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batch_controller.go
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batch_controller.go
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package controllers
import (
"context"
"fmt"
"github.com/go-logr/logr"
v1 "github.com/infinispan/infinispan-operator/api/v1"
v2 "github.com/infinispan/infinispan-operator/api/v2alpha1"
consts "github.com/infinispan/infinispan-operator/controllers/constants"
kube "github.com/infinispan/infinispan-operator/pkg/kubernetes"
batchv1 "k8s.io/api/batch/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/tools/record"
"k8s.io/utils/pointer"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
)
const (
BatchFilename = "batch"
BatchVolumeName = "batch-volume"
BatchVolumeRoot = "/etc/batch"
AdminIdentitiesVolumeName = "admin-identities-volume"
)
// BatchReconciler reconciles a Batch object
type BatchReconciler struct {
client.Client
log logr.Logger
scheme *runtime.Scheme
kubernetes *kube.Kubernetes
eventRec record.EventRecorder
}
// Struct for wrapping reconcile request data
type batchRequest struct {
*BatchReconciler
ctx context.Context
req ctrl.Request
batch *v2.Batch
reqLogger logr.Logger
}
// SetupWithManager sets up the controller with the Manager.
func (r *BatchReconciler) SetupWithManager(mgr ctrl.Manager) error {
r.Client = mgr.GetClient()
r.log = ctrl.Log.WithName("controllers").WithName("Batch")
r.scheme = mgr.GetScheme()
r.kubernetes = kube.NewKubernetesFromController(mgr)
r.eventRec = mgr.GetEventRecorderFor("batch-controller")
return ctrl.NewControllerManagedBy(mgr).
For(&v2.Batch{}).Owns(&batchv1.Job{}).
Complete(r)
}
// +kubebuilder:rbac:groups=infinispan.org,namespace=infinispan-operator-system,resources=batches;batches/status;batches/finalizers,verbs=get;list;watch;create;update;patch
// +kubebuilder:rbac:groups=batch,namespace=infinispan-operator-system,resources=jobs,verbs=get;list;watch;create;update;delete
func (reconciler *BatchReconciler) Reconcile(ctx context.Context, ctrlRequest ctrl.Request) (ctrl.Result, error) {
reqLogger := reconciler.log.WithValues("Request.Namespace", ctrlRequest.Namespace, "Request.Name", ctrlRequest.Name)
reqLogger.Info("Reconciling Batch")
// Fetch the Batch instance
instance := &v2.Batch{}
err := reconciler.Get(ctx, ctrlRequest.NamespacedName, instance)
if err != nil {
if errors.IsNotFound(err) {
// Request object not found, could have been deleted after reconcile request.
// Owned objects are automatically garbage collected. For additional cleanup logic use finalizers.
// Return and don't requeue
return reconcile.Result{}, nil
}
// Error reading the object - requeue the request.
return reconcile.Result{}, err
}
batch := &batchRequest{
BatchReconciler: reconciler,
ctx: ctx,
req: ctrlRequest,
batch: instance,
reqLogger: reqLogger,
}
phase := instance.Status.Phase
switch phase {
case "":
return reconcile.Result{}, batch.UpdatePhase(v2.BatchInitializing, nil)
case v2.BatchInitializing:
return batch.initializeResources()
case v2.BatchInitialized:
return batch.execute()
case v2.BatchRunning:
return batch.waitToComplete()
default:
// Backup either succeeded or failed
return ctrl.Result{}, nil
}
}
func (r *batchRequest) initializeResources() (reconcile.Result, error) {
batch := r.batch
spec := batch.Spec
// Ensure the Infinispan cluster exists
infinispan := &v1.Infinispan{}
if result, err := kube.LookupResource(spec.Cluster, batch.Namespace, infinispan, batch, r.Client, r.reqLogger, r.eventRec, r.ctx); result != nil {
return *result, err
}
if err := infinispan.EnsureClusterStability(); err != nil {
r.log.Info(fmt.Sprintf("Infinispan '%s' not ready: %s", spec.Cluster, err.Error()))
return reconcile.Result{RequeueAfter: consts.DefaultWaitOnCluster}, nil
}
if spec.ConfigMap == nil {
// Create configMap
configMap := &corev1.ConfigMap{
ObjectMeta: metav1.ObjectMeta{
Name: batch.Name,
Namespace: batch.Namespace,
},
}
_, err := controllerutil.CreateOrUpdate(r.ctx, r.Client, configMap, func() error {
configMap.Data = map[string]string{BatchFilename: *spec.Config}
return controllerutil.SetControllerReference(batch, configMap, r.scheme)
})
if err != nil {
return reconcile.Result{}, fmt.Errorf("unable to create ConfigMap '%s': %w", configMap.Name, err)
}
}
_, err := r.update(func() error {
batch.Status.ClusterUID = &infinispan.UID
batch.Status.Phase = v2.BatchInitialized
return nil
})
return reconcile.Result{}, err
}
func (r *batchRequest) execute() (reconcile.Result, error) {
batch := r.batch
infinispan := &v1.Infinispan{}
if result, err := kube.LookupResource(batch.Spec.Cluster, batch.Namespace, infinispan, batch, r.Client, r.reqLogger, r.eventRec, r.ctx); result != nil {
return *result, err
}
expectedUid := *batch.Status.ClusterUID
if infinispan.GetUID() != expectedUid {
err := fmt.Errorf("unable to execute Batch. Infinispan CR UUID has changed, expected '%s' observed '%s'", expectedUid, infinispan.GetUID())
return reconcile.Result{}, r.UpdatePhase(v2.BatchFailed, err)
}
cliArgs := fmt.Sprintf("--properties '%s/%s' --file '%s/%s'", consts.ServerAdminIdentitiesRoot, consts.CliPropertiesFilename, BatchVolumeRoot, BatchFilename)
labels := infinispan.PodLabels()
for k, v := range batchLabels(batch.Name) {
labels[k] = v
}
job := &batchv1.Job{
ObjectMeta: metav1.ObjectMeta{
Name: batch.Name,
Namespace: batch.Namespace,
},
Spec: batchv1.JobSpec{
BackoffLimit: pointer.Int32Ptr(0),
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: labels,
Annotations: infinispan.PodAnnotations(),
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{{
Name: batch.Name,
Image: infinispan.ImageName(),
Command: []string{"/opt/infinispan/bin/cli.sh", cliArgs},
VolumeMounts: []corev1.VolumeMount{
{
Name: BatchVolumeName,
MountPath: BatchVolumeRoot,
},
{
Name: AdminIdentitiesVolumeName,
MountPath: consts.ServerAdminIdentitiesRoot,
},
},
}},
RestartPolicy: corev1.RestartPolicyNever,
Volumes: []corev1.Volume{
// Volume for Batch ConfigMap
{
Name: BatchVolumeName,
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{Name: batch.ConfigMapName()},
},
},
},
// Volume for cli.properties
{
Name: AdminIdentitiesVolumeName,
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: infinispan.GetAdminSecretName(),
},
},
},
},
},
},
},
}
_, err := controllerutil.CreateOrUpdate(r.ctx, r.Client, job, func() error {
return controllerutil.SetControllerReference(batch, job, r.scheme)
})
if err != nil {
return reconcile.Result{}, fmt.Errorf("unable to create batch job '%s': %w", batch.Name, err)
}
return reconcile.Result{}, r.UpdatePhase(v2.BatchRunning, nil)
}
func (r *batchRequest) waitToComplete() (reconcile.Result, error) {
batch := r.batch
job := &batchv1.Job{}
if result, err := kube.LookupResource(batch.Name, batch.Namespace, job, batch, r.Client, r.reqLogger, r.eventRec, r.ctx); result != nil {
return *result, err
}
status := job.Status
if status.Succeeded > 0 {
return reconcile.Result{}, r.UpdatePhase(v2.BatchSucceeded, nil)
}
if status.Failed > 0 {
numConditions := len(status.Conditions)
if numConditions > 0 {
condition := status.Conditions[numConditions-1]
if condition.Type == batchv1.JobFailed {
var reason string
podName, err := GetJobPodName(batch.Name, batch.Namespace, r.Client, r.ctx)
if err != nil {
reason = err.Error()
} else {
reason, err = r.kubernetes.Logs(podName, batch.Namespace, false, r.ctx)
if err != nil {
reason = fmt.Errorf("unable to retrive logs for batch %s: %w", batch.Name, err).Error()
}
}
_, err = r.update(func() error {
r.batch.Status.Phase = v2.BatchFailed
r.batch.Status.Reason = reason
return nil
})
return reconcile.Result{}, err
}
}
}
// The job has not completed, wait 1 second before retrying
return reconcile.Result{}, nil
}
func (r *batchRequest) UpdatePhase(phase v2.BatchPhase, phaseErr error) error {
_, err := r.update(func() error {
batch := r.batch
var reason string
if phaseErr != nil {
reason = phaseErr.Error()
}
batch.Status.Phase = phase
batch.Status.Reason = reason
return nil
})
return err
}
func (r *batchRequest) update(mutate func() error) (bool, error) {
batch := r.batch
res, err := controllerutil.CreateOrPatch(r.ctx, r.Client, batch, func() error {
if batch.CreationTimestamp.IsZero() {
return errors.NewNotFound(schema.ParseGroupResource("batch.infinispan.org"), batch.Name)
}
return mutate()
})
return res != controllerutil.OperationResultNone, err
}
func GetJobPodName(name, namespace string, c client.Client, ctx context.Context) (string, error) {
labelSelector := labels.SelectorFromSet(batchLabels(name))
podList := &corev1.PodList{}
listOps := &client.ListOptions{Namespace: namespace, LabelSelector: labelSelector}
if err := c.List(ctx, podList, listOps); err != nil {
return "", fmt.Errorf("unable to retrieve pod name for batch %s: %w", name, err)
}
if len(podList.Items) == 0 {
return "", fmt.Errorf("no Batch job pods found")
}
return podList.Items[0].Name, nil
}
func batchLabels(name string) map[string]string {
return map[string]string{
"infinispan_batch": name,
"app": "infinispan-batch-pod",
}
}