/
channel.go
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/
channel.go
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// Copyright 2019 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 utils
import (
"context"
"fmt"
"strings"
"github.com/go-logr/logr"
chv1 "github.com/open-cluster-management/multicloud-operators-channel/pkg/apis/apps/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// GenerateChannelMap finds all channels and build map with key of channel name
func GenerateChannelMap(cl client.Client, log logr.Logger) (map[string]*chv1.Channel, error) {
// try to load channelmap if it is empty
chlist := &chv1.ChannelList{}
err := cl.List(context.TODO(), chlist, &client.ListOptions{})
if err != nil {
return nil, err
}
chmap := make(map[string]*chv1.Channel)
for _, ch := range chlist.Items {
log.Info(fmt.Sprintf("Channel namespacedname: %v/%v, type: %v, sourceNamespaces: %v, gates: %#v",
ch.Namespace, ch.Name, ch.Spec.Type, ch.Spec.SourceNamespaces, ch.Spec.Gates))
chmap[ch.Name] = ch.DeepCopy()
}
return chmap, err
}
// LocateChannel finds channel by name
func LocateChannel(cl client.Client, name string) (*chv1.Channel, error) {
// try to load channelmap if it is empty
chlist := &chv1.ChannelList{}
err := cl.List(context.TODO(), chlist, &client.ListOptions{})
if err != nil {
return nil, err
}
for _, ch := range chlist.Items {
if ch.Name == name {
return &ch, nil
}
}
return nil, nil
}
// UpdateServingChannel add/remove the given channel to the current serving channel
func UpdateServingChannel(servingChannel string, channelKey string, action string) string {
parsedstr := strings.Split(servingChannel, ",")
newChannelMap := make(map[string]bool)
for _, ch := range parsedstr {
newChannelMap[ch] = true
}
if action == "remove" {
_, ok := newChannelMap[channelKey]
if ok {
delete(newChannelMap, channelKey)
}
}
if action == "add" {
_, ok := newChannelMap[channelKey]
if !ok {
newChannelMap[channelKey] = true
}
}
newChannelList := ""
for newch := range newChannelMap {
if newChannelList > "" {
newChannelList += ","
}
newChannelList += newch
}
return newChannelList
}