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Add basic support for notifications package (#160)
* Add notification package implementation to generate conversions reports
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| /* | ||
| Copyright 2024 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. | ||
| */ | ||
|
|
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| package notifications | ||
|
|
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| import ( | ||
| "fmt" | ||
| "strings" | ||
| "sync" | ||
|
|
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| "sigs.k8s.io/controller-runtime/pkg/client" | ||
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| "github.com/olekukonko/tablewriter" | ||
| ) | ||
|
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| func init() { | ||
| NotificationAggr = NotificationAggregator{Notifications: map[string][]Notification{}} | ||
| } | ||
|
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| const ( | ||
| InfoNotification MessageType = "INFO" | ||
| WarningNotification MessageType = "WARNING" | ||
| ErrorNotification MessageType = "ERROR" | ||
| ) | ||
|
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| type MessageType string | ||
|
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| type Notification struct { | ||
| Type MessageType | ||
| Message string | ||
| CallingObjects []client.Object | ||
| } | ||
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| type NotificationAggregator struct { | ||
| mutex sync.Mutex | ||
| Notifications map[string][]Notification | ||
| } | ||
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| var NotificationAggr NotificationAggregator | ||
|
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| // DispatchNotification is used to send a notification to the NotificationAggregator | ||
| func (na *NotificationAggregator) DispatchNotification(notification Notification, ProviderName string) { | ||
| na.mutex.Lock() | ||
| na.Notifications[ProviderName] = append(na.Notifications[ProviderName], notification) | ||
| na.mutex.Unlock() | ||
| } | ||
|
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| // CreateNotificationTables takes all generated notifications and returns a map[string]string | ||
| // that displays the notifications in a tabular format based on provider | ||
| func (na *NotificationAggregator) CreateNotificationTables() map[string]string { | ||
| notificationTablesMap := make(map[string]string) | ||
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| for provider, msgs := range na.Notifications { | ||
| providerTable := strings.Builder{} | ||
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| t := tablewriter.NewWriter(&providerTable) | ||
| t.SetHeader([]string{"Message Type", "Notification", "Calling Object"}) | ||
| t.SetColWidth(200) | ||
| t.SetRowLine(true) | ||
|
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| for _, n := range msgs { | ||
| row := []string{string(n.Type), n.Message, convertObjectsToStr(n.CallingObjects)} | ||
| t.Append(row) | ||
| } | ||
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| providerTable.WriteString(fmt.Sprintf("Notifications from %v:\n", strings.ToUpper(provider))) | ||
| t.Render() | ||
| notificationTablesMap[provider] = providerTable.String() | ||
| } | ||
|
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| return notificationTablesMap | ||
| } | ||
|
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| func convertObjectsToStr(ob []client.Object) string { | ||
| var sb strings.Builder | ||
|
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| for i, o := range ob { | ||
| if i > 0 { | ||
| sb.WriteString(", ") | ||
| } | ||
| object := o.GetObjectKind().GroupVersionKind().Kind + ": " + client.ObjectKeyFromObject(o).String() | ||
| sb.WriteString(object) | ||
| } | ||
|
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| return sb.String() | ||
| } |
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