| // Copyright Istio Authors. All Rights Reserved. |
| // |
| // 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 model |
| |
| import ( |
| "fmt" |
| "strings" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/util/identifier" |
| "github.com/apache/dubbo-go-pixiu/pkg/util/sets" |
| ) |
| |
| // ProxyView provides a restricted view of mesh endpoints for a Proxy. |
| type ProxyView interface { |
| fmt.Stringer |
| IsVisible(ep *IstioEndpoint) bool |
| } |
| |
| // ProxyViewAll is a ProxyView where all endpoints are visible. |
| var ProxyViewAll ProxyView = proxyViewAll{} |
| |
| type proxyViewAll struct{} |
| |
| func (v proxyViewAll) IsVisible(*IstioEndpoint) bool { |
| return true |
| } |
| |
| func (v proxyViewAll) String() string { |
| return "" |
| } |
| |
| func newProxyView(node *Proxy) ProxyView { |
| if node == nil || node.Metadata == nil || len(node.Metadata.RequestedNetworkView) == 0 { |
| return ProxyViewAll |
| } |
| |
| // Restrict the view to the requested networks. |
| return &proxyViewImpl{ |
| visible: sets.New(node.Metadata.RequestedNetworkView...).Insert(identifier.Undefined), |
| getValue: func(ep *IstioEndpoint) string { |
| return ep.Network.String() |
| }, |
| } |
| } |
| |
| type proxyViewImpl struct { |
| visible sets.Set |
| getValue func(ep *IstioEndpoint) string |
| } |
| |
| func (v *proxyViewImpl) IsVisible(ep *IstioEndpoint) bool { |
| return v.visible.Contains(v.getValue(ep)) |
| } |
| |
| func (v *proxyViewImpl) String() string { |
| return strings.Join(v.visible.SortedList(), ",") |
| } |