| // Copyright Istio 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 xds |
| |
| import ( |
| discovery "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3" |
| mesh "istio.io/api/mesh/v1alpha1" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pilot/pkg/features" |
| "github.com/apache/dubbo-go-pixiu/pilot/pkg/model" |
| "github.com/apache/dubbo-go-pixiu/pilot/pkg/networking/util" |
| tb "github.com/apache/dubbo-go-pixiu/pilot/pkg/trustbundle" |
| ) |
| |
| // PcdsGenerator generates proxy configuration for proxies to consume |
| type PcdsGenerator struct { |
| Server *DiscoveryServer |
| TrustBundle *tb.TrustBundle |
| } |
| |
| var _ model.XdsResourceGenerator = &PcdsGenerator{} |
| |
| func pcdsNeedsPush(req *model.PushRequest) bool { |
| if !features.MultiRootMesh { |
| return false |
| } |
| |
| if req == nil { |
| return true |
| } |
| |
| if !req.Full { |
| return false |
| } |
| |
| if len(req.ConfigsUpdated) == 0 { |
| // This needs to be better optimized |
| return true |
| } |
| |
| return false |
| } |
| |
| // Generate returns ProxyConfig protobuf containing TrustBundle for given proxy |
| func (e *PcdsGenerator) Generate(proxy *model.Proxy, w *model.WatchedResource, req *model.PushRequest) (model.Resources, model.XdsLogDetails, error) { |
| if !pcdsNeedsPush(req) { |
| return nil, model.DefaultXdsLogDetails, nil |
| } |
| if e.TrustBundle == nil { |
| return nil, model.DefaultXdsLogDetails, nil |
| } |
| // TODO: For now, only TrustBundle updates are pushed. Eventually, this should push entire Proxy Configuration |
| pc := &mesh.ProxyConfig{ |
| CaCertificatesPem: e.TrustBundle.GetTrustBundle(), |
| } |
| return model.Resources{&discovery.Resource{Resource: util.MessageToAny(pc)}}, model.DefaultXdsLogDetails, nil |
| } |