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list.go
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list.go
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// 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 configmap
import (
"log"
"github.com/kubernetes/dashboard/src/app/backend/api"
"github.com/kubernetes/dashboard/src/app/backend/errors"
"github.com/kubernetes/dashboard/src/app/backend/resource/common"
"github.com/kubernetes/dashboard/src/app/backend/resource/dataselect"
"k8s.io/api/core/v1"
metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
kubernetes "k8s.io/client-go/kubernetes"
)
// ConfigMapList contains a list of Config Maps in the cluster.
type ConfigMapList struct {
ListMeta api.ListMeta `json:"listMeta"`
// Unordered list of Config Maps
Items []ConfigMap `json:"items"`
// List of non-critical errors, that occurred during resource retrieval.
Errors []error `json:"errors"`
}
// ConfigMap API resource provides mechanisms to inject containers with configuration data while keeping
// containers agnostic of Kubernetes
type ConfigMap struct {
ObjectMeta api.ObjectMeta `json:"objectMeta"`
TypeMeta api.TypeMeta `json:"typeMeta"`
}
// GetConfigMapList returns a list of all ConfigMaps in the cluster.
func GetConfigMapList(client kubernetes.Interface, nsQuery *common.NamespaceQuery, dsQuery *dataselect.DataSelectQuery) (*ConfigMapList, error) {
log.Printf("Getting list config maps in the namespace %s", nsQuery.ToRequestParam())
channels := &common.ResourceChannels{
ConfigMapList: common.GetConfigMapListChannel(client, nsQuery, 1),
}
return GetConfigMapListFromChannels(channels, dsQuery)
}
// GetConfigMapListFromChannels returns a list of all Config Maps in the cluster reading required resource list once from the channels.
func GetConfigMapListFromChannels(channels *common.ResourceChannels, dsQuery *dataselect.DataSelectQuery) (*ConfigMapList, error) {
configMaps := <-channels.ConfigMapList.List
err := <-channels.ConfigMapList.Error
nonCriticalErrors, criticalError := errors.HandleError(err)
if criticalError != nil {
return nil, criticalError
}
result := toConfigMapList(configMaps.Items, nonCriticalErrors, dsQuery)
return result, nil
}
func toConfigMap(meta metaV1.ObjectMeta) ConfigMap {
return ConfigMap{
ObjectMeta: api.NewObjectMeta(meta),
TypeMeta: api.NewTypeMeta(api.ResourceKindConfigMap),
}
}
func toConfigMapList(configMaps []v1.ConfigMap, nonCriticalErrors []error, dsQuery *dataselect.DataSelectQuery) *ConfigMapList {
result := &ConfigMapList{
Items: make([]ConfigMap, 0),
ListMeta: api.ListMeta{TotalItems: len(configMaps)},
Errors: nonCriticalErrors,
}
configMapCells, filteredTotal := dataselect.GenericDataSelectWithFilter(toCells(configMaps), dsQuery)
configMaps = fromCells(configMapCells)
result.ListMeta = api.ListMeta{TotalItems: filteredTotal}
for _, item := range configMaps {
result.Items = append(result.Items, toConfigMap(item.ObjectMeta))
}
return result
}