| /* |
| * 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 events |
| |
| import ( |
| "github.com/pkg/errors" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-kubernetes/pkg/core/resources/model" |
| ) |
| |
| type Event interface{} |
| |
| type Op int |
| |
| const ( |
| Create Op = iota |
| Update |
| Delete |
| ) |
| |
| type ResourceChangedEvent struct { |
| Operation Op |
| Type model.ResourceType |
| Key model.ResourceKey |
| TenantID string |
| } |
| |
| type TriggerInsightsComputationEvent struct { |
| TenantID string |
| } |
| |
| var ListenerStoppedErr = errors.New("listener closed") |
| |
| type Listener interface { |
| Recv() <-chan Event |
| Close() |
| } |
| |
| func NewNeverListener() Listener { |
| return &neverRecvListener{} |
| } |
| |
| type neverRecvListener struct{} |
| |
| func (*neverRecvListener) Recv() <-chan Event { |
| return nil |
| } |
| |
| func (*neverRecvListener) Close() { |
| } |
| |
| type Predicate = func(event Event) bool |
| |
| type Emitter interface { |
| Send(Event) |
| } |
| |
| type ListenerFactory interface { |
| Subscribe(...Predicate) Listener |
| } |
| |
| type EventBus interface { |
| Emitter |
| ListenerFactory |
| } |