[Feature] Add force image pull (openkruise#1385)

Signed-off-by: 刘硕 <[email protected]>
Co-authored-by: 刘硕 <[email protected]>

Author: ls-2018

apis/apps/defaults/v1alpha1.go

@@ -385,6 +385,9 @@ func SetDefaultsImagePullJob(obj *v1alpha1.ImagePullJob) {
 	if obj.Spec.PullPolicy.BackoffLimit == nil {
 		obj.Spec.PullPolicy.BackoffLimit = utilpointer.Int32Ptr(3)
 	}
+	if obj.Spec.ImagePullPolicy == "" {
+		obj.Spec.ImagePullPolicy = v1alpha1.PullIfNotPresent
+	}
 }
 
 // SetDefaultsImageListPullJob  set default values for ImageListPullJob.

apis/apps/v1alpha1/imagepulljob_types.go

@@ -27,6 +27,17 @@ const (
 	ImagePreDownloadMinUpdatedReadyPods = "apps.kruise.io/image-predownload-min-updated-ready-pods"
 )
 
+// ImagePullPolicy describes a policy for if/when to pull a container image
+// +enum
+type ImagePullPolicy string
+
+const (
+	// PullAlways means that kruise-daemon always attempts to pull the latest image.
+	PullAlways ImagePullPolicy = "Always"
+	// PullIfNotPresent means that kruise-daemon pulls if the image isn't present on disk.
+	PullIfNotPresent ImagePullPolicy = "IfNotPresent"
+)
+
 // ImagePullJobSpec defines the desired state of ImagePullJob
 type ImagePullJobSpec struct {
 	// Image is the image to be pulled by the job
@@ -69,6 +80,11 @@ type ImagePullJobTemplate struct {
 	// SandboxConfig support attach metadata in PullImage CRI interface during ImagePulljobs
 	// +optional
 	SandboxConfig *SandboxConfig `json:"sandboxConfig,omitempty"`
+
+	// Image pull policy.
+	// One of Always, IfNotPresent. Defaults to IfNotPresent.
+	// +optional
+	ImagePullPolicy ImagePullPolicy `json:"imagePullPolicy,omitempty"`
 }
 
 // ImagePullJobPodSelector is a selector over pods