| /* |
| * 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 triple |
| |
| import ( |
| "context" |
| "io" |
| "net/http" |
| "net/url" |
| "strings" |
| "sync" |
| ) |
| |
| import ( |
| "github.com/pkg/errors" |
| "google.golang.org/grpc/metadata" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/client" |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/client/proxy" |
| ) |
| |
| // InitDefaultTripleClient init default dubbo client |
| func InitDefaultTripleClient(protoset []string) { |
| tripleClient = NewTripleClient(protoset) |
| } |
| |
| var ( |
| clientOnce sync.Once |
| tripleClient *Client |
| ) |
| |
| // NewTripleClient create dubbo client |
| func NewTripleClient(protoset []string) *Client { |
| clientOnce.Do(func() { |
| tripleClient = &Client{} |
| proxy.InitProtosetSource(protoset) |
| }) |
| return tripleClient |
| } |
| |
| // Client client to generic invoke dubbo |
| type Client struct { |
| } |
| |
| func (tc *Client) Apply() error { |
| panic("implement me") |
| } |
| |
| func (tc *Client) MapParams(req *client.Request) (reqData interface{}, err error) { |
| panic("implement me") |
| } |
| |
| // Close clear GenericServicePool. |
| func (tc *Client) Close() error { |
| return nil |
| } |
| |
| // SingletonTripleClient singleton dubbo clent |
| func SingletonTripleClient(protoset []string) *Client { |
| return NewTripleClient(protoset) |
| } |
| |
| // Call invoke service |
| func (tc *Client) Call(req *client.Request) (res interface{}, err error) { |
| address := strings.Split(req.API.IntegrationRequest.HTTPBackendConfig.URL, ":") |
| p := proxy.NewProxy() |
| targetURL := &url.URL{ |
| Scheme: address[0], |
| Opaque: address[1], |
| } |
| if err = p.Connect(context.Background(), targetURL); err != nil { |
| return nil, errors.Errorf("connect triple server error = %s", err) |
| } |
| |
| header := tc.forwardHeaders(req.IngressRequest.Header) |
| ctx := metadata.NewOutgoingContext(context.Background(), header) |
| meta := make(map[string][]string) |
| reqData, err := io.ReadAll(req.IngressRequest.Body) |
| if err != nil { |
| return nil, errors.Errorf("read request body error = %s", err) |
| } |
| |
| ctx, cancel := context.WithTimeout(ctx, req.Timeout) |
| defer cancel() |
| call, err := p.Call(ctx, req.API.Method.IntegrationRequest.Interface, req.API.Method.IntegrationRequest.Method, reqData, (*metadata.MD)(&meta)) |
| if err != nil { |
| return "", errors.Errorf("call triple server error = %s", err) |
| } |
| return call, nil |
| } |
| |
| // forwardHeaders specific what headers should be forwarded |
| func (tc *Client) forwardHeaders(header http.Header) metadata.MD { |
| md := metadata.MD{} |
| for k, vals := range header { |
| if s := strings.ToLower(k); strings.HasPrefix(s, "tri-") { |
| md.Set(k, vals...) |
| } |
| } |
| return md |
| } |