| /* |
| * 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 http |
| |
| import ( |
| "context" |
| "encoding/json" |
| "math" |
| "net" |
| "net/http" |
| "net/url" |
| "strings" |
| "time" |
| ) |
| |
| import ( |
| "github.com/dubbo-go-pixiu/pixiu-api/pkg/router" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/client" |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/common/constant" |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/logger" |
| "github.com/apache/dubbo-go-pixiu/pixiu/pkg/model" |
| ) |
| |
| const abortIndex int8 = math.MaxInt8 / 2 |
| |
| // HttpContext http context |
| type HttpContext struct { |
| //Deprecated: waiting to delete |
| Index int8 |
| //Deprecated: waiting to delete |
| Filters FilterChain |
| Timeout time.Duration |
| Ctx context.Context |
| Params map[string]interface{} |
| |
| // localReply Means that the request was interrupted, |
| // which may occur in the Decode or Encode stage |
| localReply bool |
| // statusCode code will be return |
| statusCode int |
| // localReplyBody: happen error |
| localReplyBody []byte |
| // the response context will return. |
| TargetResp *client.Response |
| // client call response. |
| SourceResp interface{} |
| |
| HttpConnectionManager model.HttpConnectionManagerConfig |
| Route *model.RouteAction |
| Api *router.API |
| |
| Request *http.Request |
| Writer http.ResponseWriter |
| } |
| |
| type ( |
| // ErrResponse err response. |
| ErrResponse struct { |
| Message string `json:"message"` |
| } |
| |
| // FilterFunc filter func, filter |
| FilterFunc func(c *HttpContext) |
| |
| // FilterChain filter chain |
| FilterChain []FilterFunc |
| ) |
| |
| // Deprecated: Next logic for lookup filter |
| func (hc *HttpContext) Next() { |
| } |
| |
| // Reset reset http context |
| func (hc *HttpContext) Reset() { |
| hc.Ctx = nil |
| hc.Index = -1 |
| hc.Filters = []FilterFunc{} |
| hc.Route = nil |
| hc.Api = nil |
| |
| hc.TargetResp = nil |
| hc.SourceResp = nil |
| hc.statusCode = 0 |
| hc.localReply = false |
| hc.localReplyBody = nil |
| } |
| |
| // RouteEntry set route |
| func (hc *HttpContext) RouteEntry(r *model.RouteAction) { |
| hc.Route = r |
| } |
| |
| // GetRouteEntry get route |
| func (hc *HttpContext) GetRouteEntry() *model.RouteAction { |
| return hc.Route |
| } |
| |
| // AddHeader add header |
| func (hc *HttpContext) AddHeader(k, v string) { |
| hc.Writer.Header().Add(k, v) |
| } |
| |
| // GetHeader get header |
| func (hc *HttpContext) GetHeader(k string) string { |
| return hc.Request.Header.Get(k) |
| } |
| |
| // AllHeaders get all headers |
| func (hc *HttpContext) AllHeaders() http.Header { |
| return hc.Request.Header |
| } |
| |
| // GetUrl get http request url |
| func (hc *HttpContext) GetUrl() string { |
| return hc.Request.URL.Path |
| } |
| |
| func (hc *HttpContext) SetUrl(url string) { |
| hc.Request.URL.Path = url |
| } |
| |
| // GetMethod get method, POST/GET ... |
| func (hc *HttpContext) GetMethod() string { |
| return hc.Request.Method |
| } |
| |
| // GetClientIP get client IP |
| func (hc *HttpContext) GetClientIP() string { |
| xForwardedFor := hc.Request.Header.Get("X-Forwarded-For") |
| ip := strings.TrimSpace(strings.Split(xForwardedFor, ",")[0]) |
| if len(ip) != 0 { |
| return ip |
| } |
| |
| ip = strings.TrimSpace(hc.Request.Header.Get("X-Real-Ip")) |
| if len(ip) != 0 { |
| return ip |
| } |
| |
| if ip, _, err := net.SplitHostPort(strings.TrimSpace(hc.Request.RemoteAddr)); err == nil && len(ip) != 0 { |
| return ip |
| } |
| |
| return "" |
| } |
| |
| // GetApplicationName get application name |
| func (hc *HttpContext) GetApplicationName() string { |
| if u, err := url.Parse(hc.Request.RequestURI); err == nil { |
| return strings.Split(u.Path, "/")[0] |
| } |
| |
| return "" |
| } |
| |
| // SendLocalReply Means that the request was interrupted and Response will be sent directly |
| // Even if it’s currently in to Decode stage |
| func (hc *HttpContext) SendLocalReply(status int, body []byte) { |
| hc.localReply = true |
| hc.statusCode = status |
| hc.localReplyBody = body |
| hc.TargetResp = &client.Response{Data: body} |
| if json.Valid(body) { |
| hc.AddHeader(constant.HeaderKeyContextType, constant.HeaderValueApplicationJson) |
| } else { |
| hc.AddHeader(constant.HeaderKeyContextType, constant.HeaderValueTextPlain) |
| } |
| writer := hc.Writer |
| writer.WriteHeader(status) |
| _, err := writer.Write(body) |
| if err != nil { |
| logger.Errorf("write fail: %v", err) |
| } |
| } |
| |
| func (hc *HttpContext) GetLocalReplyBody() []byte { |
| return hc.localReplyBody |
| } |
| |
| func (hc *HttpContext) GetStatusCode() int { |
| return hc.statusCode |
| } |
| |
| func (hc *HttpContext) StatusCode(code int) { |
| hc.statusCode = code |
| } |
| |
| func (hc *HttpContext) LocalReply() bool { |
| return hc.localReply |
| } |
| |
| // API sets the API to http context |
| func (hc *HttpContext) API(api router.API) { |
| if hc.Timeout > api.Timeout { |
| hc.Timeout = api.Timeout |
| } |
| hc.Api = &api |
| } |
| |
| // GetAPI get api |
| func (hc *HttpContext) GetAPI() *router.API { |
| return hc.Api |
| } |
| |
| // Deprecated: Abort filter chain break , filter after the current filter will not executed. |
| func (hc *HttpContext) Abort() { |
| hc.Index = abortIndex |
| } |
| |
| // Deprecated: AppendFilterFunc append filter func. |
| func (hc *HttpContext) AppendFilterFunc(ff ...FilterFunc) { |
| for _, v := range ff { |
| hc.Filters = append(hc.Filters, v) |
| } |
| } |
| |
| func (hc *HttpContext) GenerateHash() string { |
| req := hc.Request |
| return req.Method + "." + req.RequestURI |
| } |