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event.go
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event.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 types
// EventType is the type of event.
type EventType int
const (
// EventAdd means an add event.
EventAdd = iota + 1
// EventUpdate means an update event.
EventUpdate
// EventDelete means a delete event.
EventDelete
// EventSync triggers by periodic synchronization, should make a comparison before any request to APISIX
// The synchronization considered as add event,
// so its behavior should be the same as EventAdd in controller
EventSync
)
func (ev EventType) IsAddEvent() bool {
return ev == EventAdd || ev == EventSync
}
func (ev EventType) IsSyncEvent() bool {
return ev == EventSync
}
func (ev EventType) String() string {
switch ev {
case EventAdd:
return "add"
case EventUpdate:
return "update"
case EventDelete:
return "delete"
case EventSync:
return "sync"
default:
return "unknown"
}
}
// Event represents a typed event.
type Event struct {
// Type is the type of event.
Type EventType
// Object is the event subject.
Object interface{}
// OldObject is the old object in update event.
OldObject interface{}
// Tombstone is the final state before object was delete,
// it's useful for DELETE event.
Tombstone interface{}
}