Merge pull request kubernetes#50871 from liyinan926/lister-v1beta2

Automatic merge from submit-queue (batch tested with PRs 50693, 50831, 47506, 49119, 50871)

Added lister expansions for DaemonSet, Deployment, ReplicaSet, and StatefulSet for apps/v1beta2

**What this PR does / why we need it**:
This PR copies list expansions for  `DaemonSet`, `Deployment`, `ReplicaSet`, and `StatefulSet` to `apps/v1beta2` from `extensions/v1beta1` and `apps/v1beta1`.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes kubernetes#50870.

**Special notes for your reviewer**:
@kow3ns @janetkuo 

**Release note**:
```release-note
NONE
```

staging/src/k8s.io/client-go/listers/apps/v1beta2/BUILD

@@ -10,15 +10,21 @@ go_library(
     srcs = [
         "controllerrevision.go",
         "daemonset.go",
+        "daemonset_expansion.go",
         "deployment.go",
+        "deployment_expansion.go",
         "expansion_generated.go",
         "replicaset.go",
+        "replicaset_expansion.go",
         "scale.go",
         "statefulset.go",
+        "statefulset_expansion.go",
     ],
     deps = [
         "//vendor/k8s.io/api/apps/v1beta2:go_default_library",
+        "//vendor/k8s.io/api/core/v1:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/labels:go_default_library",
         "//vendor/k8s.io/client-go/tools/cache:go_default_library",
     ],

staging/src/k8s.io/client-go/listers/apps/v1beta2/daemonset_expansion.go

@@ -0,0 +1,113 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed 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 v1beta2
+
+import (
+	"fmt"
+
+	apps "k8s.io/api/apps/v1beta2"
+	"k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+)
+
+// DaemonSetListerExpansion allows custom methods to be added to
+// DaemonSetLister.
+type DaemonSetListerExpansion interface {
+	GetPodDaemonSets(pod *v1.Pod) ([]*apps.DaemonSet, error)
+	GetHistoryDaemonSets(history *apps.ControllerRevision) ([]*apps.DaemonSet, error)
+}
+
+// DaemonSetNamespaceListerExpansion allows custom methods to be added to
+// DaemonSetNamespaceLister.
+type DaemonSetNamespaceListerExpansion interface{}
+
+// GetPodDaemonSets returns a list of DaemonSets that potentially match a pod.
+// Only the one specified in the Pod's ControllerRef will actually manage it.
+// Returns an error only if no matching DaemonSets are found.
+func (s *daemonSetLister) GetPodDaemonSets(pod *v1.Pod) ([]*apps.DaemonSet, error) {
+	var selector labels.Selector
+	var daemonSet *apps.DaemonSet
+
+	if len(pod.Labels) == 0 {
+		return nil, fmt.Errorf("no daemon sets found for pod %v because it has no labels", pod.Name)
+	}
+
+	list, err := s.DaemonSets(pod.Namespace).List(labels.Everything())
+	if err != nil {
+		return nil, err
+	}
+
+	var daemonSets []*apps.DaemonSet
+	for i := range list {
+		daemonSet = list[i]
+		if daemonSet.Namespace != pod.Namespace {
+			continue
+		}
+		selector, err = metav1.LabelSelectorAsSelector(daemonSet.Spec.Selector)
+		if err != nil {
+			// this should not happen if the DaemonSet passed validation
+			return nil, err
+		}
+
+		// If a daemonSet with a nil or empty selector creeps in, it should match nothing, not everything.
+		if selector.Empty() || !selector.Matches(labels.Set(pod.Labels)) {
+			continue
+		}
+		daemonSets = append(daemonSets, daemonSet)
+	}
+
+	if len(daemonSets) == 0 {
+		return nil, fmt.Errorf("could not find daemon set for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
+	}
+
+	return daemonSets, nil
+}
+
+// GetHistoryDaemonSets returns a list of DaemonSets that potentially
+// match a ControllerRevision. Only the one specified in the ControllerRevision's ControllerRef
+// will actually manage it.
+// Returns an error only if no matching DaemonSets are found.
+func (s *daemonSetLister) GetHistoryDaemonSets(history *apps.ControllerRevision) ([]*apps.DaemonSet, error) {
+	if len(history.Labels) == 0 {
+		return nil, fmt.Errorf("no DaemonSet found for ControllerRevision %s because it has no labels", history.Name)
+	}
+
+	list, err := s.DaemonSets(history.Namespace).List(labels.Everything())
+	if err != nil {
+		return nil, err
+	}
+
+	var daemonSets []*apps.DaemonSet
+	for _, ds := range list {
+		selector, err := metav1.LabelSelectorAsSelector(ds.Spec.Selector)
+		if err != nil {
+			return nil, fmt.Errorf("invalid label selector: %v", err)
+		}
+		// If a DaemonSet with a nil or empty selector creeps in, it should match nothing, not everything.
+		if selector.Empty() || !selector.Matches(labels.Set(history.Labels)) {
+			continue
+		}
+		daemonSets = append(daemonSets, ds)
+	}
+
+	if len(daemonSets) == 0 {
+		return nil, fmt.Errorf("could not find DaemonSets for ControllerRevision %s in namespace %s with labels: %v", history.Name, history.Namespace, history.Labels)
+	}
+
+	return daemonSets, nil
+}

staging/src/k8s.io/client-go/listers/apps/v1beta2/deployment_expansion.go

@@ -0,0 +1,70 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed 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 v1beta2
+
+import (
+	"fmt"
+
+	apps "k8s.io/api/apps/v1beta2"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+)
+
+// DeploymentListerExpansion allows custom methods to be added to
+// DeploymentLister.
+type DeploymentListerExpansion interface {
+	GetDeploymentsForReplicaSet(rs *apps.ReplicaSet) ([]*apps.Deployment, error)
+}
+
+// DeploymentNamespaceListerExpansion allows custom methods to be added to
+// DeploymentNamespaceLister.
+type DeploymentNamespaceListerExpansion interface{}
+
+// GetDeploymentsForReplicaSet returns a list of Deployments that potentially
+// match a ReplicaSet. Only the one specified in the ReplicaSet's ControllerRef
+// will actually manage it.
+// Returns an error only if no matching Deployments are found.
+func (s *deploymentLister) GetDeploymentsForReplicaSet(rs *apps.ReplicaSet) ([]*apps.Deployment, error) {
+	if len(rs.Labels) == 0 {
+		return nil, fmt.Errorf("no deployments found for ReplicaSet %v because it has no labels", rs.Name)
+	}
+
+	// TODO: MODIFY THIS METHOD so that it checks for the podTemplateSpecHash label
+	dList, err := s.Deployments(rs.Namespace).List(labels.Everything())
+	if err != nil {
+		return nil, err
+	}
+
+	var deployments []*apps.Deployment
+	for _, d := range dList {
+		selector, err := metav1.LabelSelectorAsSelector(d.Spec.Selector)
+		if err != nil {
+			return nil, fmt.Errorf("invalid label selector: %v", err)
+		}
+		// If a deployment with a nil or empty selector creeps in, it should match nothing, not everything.
+		if selector.Empty() || !selector.Matches(labels.Set(rs.Labels)) {
+			continue
+		}
+		deployments = append(deployments, d)
+	}
+
+	if len(deployments) == 0 {
+		return nil, fmt.Errorf("could not find deployments set for ReplicaSet %s in namespace %s with labels: %v", rs.Name, rs.Namespace, rs.Labels)
+	}
+
+	return deployments, nil
+}

staging/src/k8s.io/client-go/listers/apps/v1beta2/expansion_generated.go

@@ -26,42 +26,10 @@ type ControllerRevisionListerExpansion interface{}
 // ControllerRevisionNamespaceLister.
 type ControllerRevisionNamespaceListerExpansion interface{}
 
-// DaemonSetListerExpansion allows custom methods to be added to
-// DaemonSetLister.
-type DaemonSetListerExpansion interface{}
-
-// DaemonSetNamespaceListerExpansion allows custom methods to be added to
-// DaemonSetNamespaceLister.
-type DaemonSetNamespaceListerExpansion interface{}
-
-// DeploymentListerExpansion allows custom methods to be added to
-// DeploymentLister.
-type DeploymentListerExpansion interface{}
-
-// DeploymentNamespaceListerExpansion allows custom methods to be added to
-// DeploymentNamespaceLister.
-type DeploymentNamespaceListerExpansion interface{}
-
-// ReplicaSetListerExpansion allows custom methods to be added to
-// ReplicaSetLister.
-type ReplicaSetListerExpansion interface{}
-
-// ReplicaSetNamespaceListerExpansion allows custom methods to be added to
-// ReplicaSetNamespaceLister.
-type ReplicaSetNamespaceListerExpansion interface{}
-
 // ScaleListerExpansion allows custom methods to be added to
 // ScaleLister.
 type ScaleListerExpansion interface{}
 
 // ScaleNamespaceListerExpansion allows custom methods to be added to
 // ScaleNamespaceLister.
 type ScaleNamespaceListerExpansion interface{}
-
-// StatefulSetListerExpansion allows custom methods to be added to
-// StatefulSetLister.
-type StatefulSetListerExpansion interface{}
-
-// StatefulSetNamespaceListerExpansion allows custom methods to be added to
-// StatefulSetNamespaceLister.
-type StatefulSetNamespaceListerExpansion interface{}

staging/src/k8s.io/client-go/listers/apps/v1beta2/replicaset_expansion.go

@@ -0,0 +1,73 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed 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 v1beta2
+
+import (
+	"fmt"
+
+	apps "k8s.io/api/apps/v1beta2"
+	"k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+)
+
+// ReplicaSetListerExpansion allows custom methods to be added to
+// ReplicaSetLister.
+type ReplicaSetListerExpansion interface {
+	GetPodReplicaSets(pod *v1.Pod) ([]*apps.ReplicaSet, error)
+}
+
+// ReplicaSetNamespaceListerExpansion allows custom methods to be added to
+// ReplicaSetNamespaceLister.
+type ReplicaSetNamespaceListerExpansion interface{}
+
+// GetPodReplicaSets returns a list of ReplicaSets that potentially match a pod.
+// Only the one specified in the Pod's ControllerRef will actually manage it.
+// Returns an error only if no matching ReplicaSets are found.
+func (s *replicaSetLister) GetPodReplicaSets(pod *v1.Pod) ([]*apps.ReplicaSet, error) {
+	if len(pod.Labels) == 0 {
+		return nil, fmt.Errorf("no ReplicaSets found for pod %v because it has no labels", pod.Name)
+	}
+
+	list, err := s.ReplicaSets(pod.Namespace).List(labels.Everything())
+	if err != nil {
+		return nil, err
+	}
+
+	var rss []*apps.ReplicaSet
+	for _, rs := range list {
+		if rs.Namespace != pod.Namespace {
+			continue
+		}
+		selector, err := metav1.LabelSelectorAsSelector(rs.Spec.Selector)
+		if err != nil {
+			return nil, fmt.Errorf("invalid selector: %v", err)
+		}
+
+		// If a ReplicaSet with a nil or empty selector creeps in, it should match nothing, not everything.
+		if selector.Empty() || !selector.Matches(labels.Set(pod.Labels)) {
+			continue
+		}
+		rss = append(rss, rs)
+	}
+
+	if len(rss) == 0 {
+		return nil, fmt.Errorf("could not find ReplicaSet for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
+	}
+
+	return rss, nil
+}