devlopment branch (#1736)

pkg/models/resources/v1alpha2/node/nodes.go

@@ -0,0 +1,184 @@
+/*
+
+ Copyright 2019 The KubeSphere 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 node
+
+import (
+	"fmt"
+	"k8s.io/client-go/informers"
+	"kubesphere.io/kubesphere/pkg/constants"
+	"kubesphere.io/kubesphere/pkg/models/resources/v1alpha2"
+
+	"kubesphere.io/kubesphere/pkg/server/params"
+	"kubesphere.io/kubesphere/pkg/utils/sliceutil"
+	"sort"
+	"strings"
+
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/labels"
+)
+
+const (
+	nodeConfigOK     v1.NodeConditionType = "ConfigOK"
+	nodeKubeletReady v1.NodeConditionType = "KubeletReady"
+)
+
+type nodeSearcher struct {
+	informers informers.SharedInformerFactory
+}
+
+func NewNodeSearcher(informers informers.SharedInformerFactory) v1alpha2.Interface {
+	return &nodeSearcher{informers: informers}
+}
+
+func (s *nodeSearcher) Get(_, name string) (interface{}, error) {
+	return s.informers.Core().V1().Nodes().Lister().Get(name)
+}
+
+func getNodeStatus(node *v1.Node) string {
+	if node.Spec.Unschedulable {
+		return v1alpha2.StatusUnschedulable
+	}
+	for _, condition := range node.Status.Conditions {
+		if isUnhealthyStatus(condition) {
+			return v1alpha2.StatusWarning
+		}
+	}
+
+	return v1alpha2.StatusRunning
+}
+
+var expectedConditions = map[v1.NodeConditionType]v1.ConditionStatus{
+	v1.NodeMemoryPressure:     v1.ConditionFalse,
+	v1.NodeDiskPressure:       v1.ConditionFalse,
+	v1.NodePIDPressure:        v1.ConditionFalse,
+	v1.NodeNetworkUnavailable: v1.ConditionFalse,
+	nodeConfigOK:              v1.ConditionTrue,
+	nodeKubeletReady:          v1.ConditionTrue,
+	v1.NodeReady:              v1.ConditionTrue,
+}
+
+func isUnhealthyStatus(condition v1.NodeCondition) bool {
+	expectedStatus := expectedConditions[condition.Type]
+	if expectedStatus != "" && condition.Status != expectedStatus {
+		return true
+	}
+	return false
+}
+
+// exactly Match
+func (*nodeSearcher) match(match map[string]string, item *v1.Node) bool {
+	for k, v := range match {
+		switch k {
+		case v1alpha2.Name:
+			names := strings.Split(v, "|")
+			if !sliceutil.HasString(names, item.Name) {
+				return false
+			}
+		case v1alpha2.Role:
+			labelKey := fmt.Sprintf("node-role.kubernetes.io/%s", v)
+			if _, ok := item.Labels[labelKey]; !ok {
+				return false
+			}
+		case v1alpha2.Status:
+			if getNodeStatus(item) != v {
+				return false
+			}
+		case v1alpha2.Keyword:
+			if !strings.Contains(item.Name, v) && !v1alpha2.SearchFuzzy(item.Labels, "", v) && !v1alpha2.SearchFuzzy(item.Annotations, "", v) {
+				return false
+			}
+		default:
+			// label not exist or value not equal
+			if val, ok := item.Labels[k]; !ok || val != v {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+// Fuzzy searchInNamespace
+func (*nodeSearcher) fuzzy(fuzzy map[string]string, item *v1.Node) bool {
+	for k, v := range fuzzy {
+		switch k {
+		case v1alpha2.Name:
+			if !strings.Contains(item.Name, v) && !strings.Contains(item.Annotations[constants.DisplayNameAnnotationKey], v) {
+				return false
+			}
+		case v1alpha2.Label:
+			if !v1alpha2.SearchFuzzy(item.Labels, "", v) {
+				return false
+			}
+		case v1alpha2.Annotation:
+			if !v1alpha2.SearchFuzzy(item.Annotations, "", v) {
+				return false
+			}
+			return false
+		default:
+			if !v1alpha2.SearchFuzzy(item.Labels, k, v) {
+				return false
+			}
+		}
+	}
+	return true
+}
+
+func (*nodeSearcher) compare(a, b *v1.Node, orderBy string) bool {
+	switch orderBy {
+	case v1alpha2.CreateTime:
+		return a.CreationTimestamp.Time.Before(b.CreationTimestamp.Time)
+	case v1alpha2.Name:
+		fallthrough
+	default:
+		return strings.Compare(a.Name, b.Name) <= 0
+	}
+}
+
+func (s *nodeSearcher) Search(namespace string, conditions *params.Conditions, orderBy string, reverse bool) ([]interface{}, error) {
+	nodes, err := s.informers.Core().V1().Nodes().Lister().List(labels.Everything())
+
+	if err != nil {
+		return nil, err
+	}
+
+	result := make([]*v1.Node, 0)
+
+	if len(conditions.Match) == 0 && len(conditions.Fuzzy) == 0 {
+		result = nodes
+	} else {
+		for _, item := range nodes {
+			if s.match(conditions.Match, item) && s.fuzzy(conditions.Fuzzy, item) {
+				result = append(result, item)
+			}
+		}
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if reverse {
+			tmp := i
+			i = j
+			j = tmp
+		}
+		return s.compare(result[i], result[j], orderBy)
+	})
+
+	r := make([]interface{}, 0)
+	for _, i := range result {
+		r = append(r, i)
+	}
+	return r, nil
+}