| // 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 virtualservice |
| |
| import ( |
| "fmt" |
| "strings" |
| ) |
| |
| import ( |
| "istio.io/api/networking/v1alpha3" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/config/analysis" |
| "github.com/apache/dubbo-go-pixiu/pkg/config/analysis/analyzers/util" |
| "github.com/apache/dubbo-go-pixiu/pkg/config/analysis/msg" |
| "github.com/apache/dubbo-go-pixiu/pkg/config/host" |
| "github.com/apache/dubbo-go-pixiu/pkg/config/resource" |
| "github.com/apache/dubbo-go-pixiu/pkg/config/schema/collection" |
| "github.com/apache/dubbo-go-pixiu/pkg/config/schema/collections" |
| ) |
| |
| // GatewayAnalyzer checks the gateways associated with each virtual service |
| type GatewayAnalyzer struct{} |
| |
| var _ analysis.Analyzer = &GatewayAnalyzer{} |
| |
| // Metadata implements Analyzer |
| func (s *GatewayAnalyzer) Metadata() analysis.Metadata { |
| return analysis.Metadata{ |
| Name: "virtualservice.GatewayAnalyzer", |
| Description: "Checks the gateways associated with each virtual service", |
| Inputs: collection.Names{ |
| collections.IstioNetworkingV1Alpha3Gateways.Name(), |
| collections.IstioNetworkingV1Alpha3Virtualservices.Name(), |
| }, |
| } |
| } |
| |
| // Analyze implements Analyzer |
| func (s *GatewayAnalyzer) Analyze(c analysis.Context) { |
| c.ForEach(collections.IstioNetworkingV1Alpha3Virtualservices.Name(), func(r *resource.Instance) bool { |
| s.analyzeVirtualService(r, c) |
| return true |
| }) |
| } |
| |
| func (s *GatewayAnalyzer) analyzeVirtualService(r *resource.Instance, c analysis.Context) { |
| vs := r.Message.(*v1alpha3.VirtualService) |
| vsNs := r.Metadata.FullName.Namespace |
| vsName := r.Metadata.FullName |
| |
| for i, gwName := range vs.Gateways { |
| // This is a special-case accepted value |
| if gwName == util.MeshGateway { |
| continue |
| } |
| |
| gwFullName := resource.NewShortOrFullName(vsNs, gwName) |
| |
| if !c.Exists(collections.IstioNetworkingV1Alpha3Gateways.Name(), gwFullName) { |
| m := msg.NewReferencedResourceNotFound(r, "gateway", gwName) |
| |
| if line, ok := util.ErrorLine(r, fmt.Sprintf(util.VSGateway, i)); ok { |
| m.Line = line |
| } |
| |
| c.Report(collections.IstioNetworkingV1Alpha3Virtualservices.Name(), m) |
| } |
| |
| if !vsHostInGateway(c, gwFullName, vs.Hosts, vsNs.String()) { |
| m := msg.NewVirtualServiceHostNotFoundInGateway(r, vs.Hosts, vsName.String(), gwFullName.String()) |
| |
| if line, ok := util.ErrorLine(r, fmt.Sprintf(util.VSGateway, i)); ok { |
| m.Line = line |
| } |
| |
| c.Report(collections.IstioNetworkingV1Alpha3Virtualservices.Name(), m) |
| } |
| } |
| } |
| |
| func vsHostInGateway(c analysis.Context, gateway resource.FullName, vsHosts []string, vsNamespace string) bool { |
| var gatewayHosts []string |
| var gatewayNs string |
| |
| c.ForEach(collections.IstioNetworkingV1Alpha3Gateways.Name(), func(r *resource.Instance) bool { |
| if r.Metadata.FullName == gateway { |
| s := r.Message.(*v1alpha3.Gateway) |
| gatewayNs = r.Metadata.FullName.Namespace.String() |
| for _, v := range s.Servers { |
| sanitizeServerHostNamespace(v, gatewayNs) |
| gatewayHosts = append(gatewayHosts, v.Hosts...) |
| } |
| } |
| |
| return true |
| }) |
| |
| gatewayHostNames := host.NamesForNamespace(gatewayHosts, vsNamespace) |
| for _, gh := range gatewayHostNames { |
| for _, vsh := range vsHosts { |
| gatewayHost := gh |
| vsHost := host.Name(vsh) |
| |
| if gatewayHost.Matches(vsHost) { |
| return true |
| } |
| } |
| } |
| |
| return false |
| } |
| |
| // convert ./host to currentNamespace/Host |
| // */host to just host |
| // */* to just * |
| func sanitizeServerHostNamespace(server *v1alpha3.Server, namespace string) { |
| for i, h := range server.Hosts { |
| if strings.Contains(h, "/") { |
| parts := strings.Split(h, "/") |
| if parts[0] == "." { |
| server.Hosts[i] = fmt.Sprintf("%s/%s", namespace, parts[1]) |
| } else if parts[0] == "*" { |
| if parts[1] == "*" { |
| server.Hosts = []string{"*"} |
| return |
| } |
| server.Hosts[i] = parts[1] |
| } |
| } |
| } |
| } |