| /* |
| * 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 servicecomb |
| |
| import ( |
| "github.com/apache/servicecomb-mesher/proxy/config" |
| "github.com/apache/servicecomb-mesher/proxy/ingress" |
| "github.com/go-chassis/go-archaius" |
| "github.com/patrickmn/go-cache" |
| "regexp" |
| "time" |
| ) |
| |
| const ( |
| cacheTTL = 30 |
| ingressRuleKey = "mesher.ingress.rule.http" |
| ) |
| |
| var rulesData []*config.IngressRule |
| |
| //IngressRuleFetcher query ingress rule |
| type IngressRuleFetcher struct { |
| cache *cache.Cache |
| } |
| |
| //Fetch get ingress rule |
| func (f *IngressRuleFetcher) Fetch(protocol, host, apiPath string, headers map[string][]string) (*config.IngressRule, error) { |
| for _, r := range rulesData { |
| if r.Host != "" && host != r.Host { |
| //do not match host,then ignore path |
| continue |
| } |
| match, err := regexp.MatchString(r.APIPath, apiPath) |
| if err != nil { |
| return nil, err |
| } |
| if match { |
| return r, nil |
| } |
| } |
| return nil, ingress.ErrNotMatch |
| } |
| |
| func newFetcher() (ingress.RuleFetcher, error) { |
| raw := archaius.GetString(ingressRuleKey, "") |
| rules, err := config.NewRules(raw) |
| if err != nil { |
| return nil, err |
| } |
| |
| err = archaius.RegisterListener(&ingressRuleEventListener{}, ingressRuleKey) |
| if err != nil { |
| return nil, err |
| } |
| rulesData = rules.Value() |
| return &IngressRuleFetcher{ |
| cache: cache.New(cacheTTL*time.Second, 0), |
| }, nil |
| } |
| |
| func init() { |
| ingress.InstallPlugin("servicecomb", newFetcher) |
| } |