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server.go
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server.go
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package goi
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"os"
"reflect"
"time"
)
// Http 服务
var engine *Engine
var Settings *metaSettings
var Cache *MetaCache
var Log *MetaLogger
var version string = "1.0.10"
// 版本
func Version() string {
return version
}
// HandlerFunc 定义 goi 使用的请求处理程序
type HandlerFunc func(*Request) any
// type HandlerFunc func(*http.Request)
// Engine 实现 ServeHTTP 接口
type Engine struct {
Router *metaRouter
MiddleWares *metaMiddleWares
Settings *metaSettings
Cache *MetaCache
Log *MetaLogger
}
// 创建一个 Http 服务
func NewHttpServer() *Engine {
Settings = newSettings()
Cache = newCache()
Log = NewLogger()
engine = &Engine{
Router: newRouter(),
MiddleWares: newMiddleWares(),
Settings: Settings,
Cache: Cache,
Log: Log,
}
return engine
}
// 启动 http 服务
func (engine *Engine) RunServer() (err error) {
server := http.Server{
Addr: fmt.Sprintf("%v:%v", engine.Settings.SERVER_ADDRESS, engine.Settings.SERVER_PORT),
Handler: engine,
}
engine.init() // 初始化
return server.ListenAndServe()
// return http.ListenAndServe(addr, engine)
}
// 初始化
func (engine *Engine) init() {
// 初始化时区
location, err := time.LoadLocation(engine.Settings.TIME_ZONE)
if err != nil {
panic(fmt.Sprintf("初始化时区错误: %v\n", err))
}
engine.Settings.LOCATION = location
// 初始化缓存
engine.Cache.initCache()
// 初始化日志
serverInfo := fmt.Sprintf("goi version:%v \nserver run: %v:%v", version, engine.Settings.SERVER_ADDRESS, engine.Settings.SERVER_PORT)
engine.Log.InitLogger(serverInfo)
}
// 实现 ServeHTTP 接口
func (engine *Engine) ServeHTTP(response http.ResponseWriter, request *http.Request) {
requestID := time.Now().In(engine.Settings.LOCATION)
ctx := context.WithValue(request.Context(), "requestID", requestID)
request = request.WithContext(ctx)
var log string
var err error
// 初始化请求
requestContext := &Request{
Object: request,
Context: request.Context(),
PathParams: make(metaValues),
QueryParams: make(metaValues),
BodyParams: make(metaValues),
}
defer metaRecovery(requestContext, response) // 异常处理
// 解析 Query 参数
for name, values := range request.URL.Query() {
for _, value := range values {
paramType := reflect.TypeOf(value).String()
data := parseValue(paramType, value)
requestContext.QueryParams[name] = append(requestContext.QueryParams[name], data)
}
}
// 解析 Body 参数
request.ParseMultipartForm(32 << 20)
for name, values := range request.Form {
for _, value := range values {
paramType := reflect.TypeOf(value).String()
data := parseValue(paramType, value)
requestContext.BodyParams[name] = append(requestContext.BodyParams[name], data)
}
}
// 解析 json 数据
body, err := io.ReadAll(request.Body)
if err != nil {
panic(fmt.Sprintf("读取 Body 错误: %v\n", err))
}
if len(body) != 0 {
jsonData := make(map[string]any)
err = json.Unmarshal(body, &jsonData)
if err != nil {
panic(fmt.Sprintf("解析 json 错误: %v\n", err))
}
for name, value := range jsonData {
requestContext.BodyParams[name] = append(requestContext.BodyParams[name], value)
}
}
// 处理 HTTP 请求
StatusCode := http.StatusOK
var ResponseData []byte
var write any
responseData := engine.HandlerHTTP(requestContext, response)
// 文件处理
fileObject, isFile := responseData.(*os.File)
if isFile {
// 返回文件内容
write, ResponseData = metaResponseStatic(fileObject, requestContext, response)
log = fmt.Sprintf("- %v - %v %v %v byte status %v %v",
request.Host,
request.Method,
request.URL.Path,
write,
request.Proto,
StatusCode,
)
engine.Log.Info(log)
return
}
// 响应处理
responseObject, isResponse := responseData.(Response)
if isResponse {
StatusCode = responseObject.Status
responseData = responseObject.Data
}
switch value := responseData.(type) {
case nil:
ResponseData, err = json.Marshal(value)
case bool:
ResponseData, err = json.Marshal(value)
case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64:
ResponseData, err = json.Marshal(value)
case float32, float64:
ResponseData, err = json.Marshal(value)
case string:
ResponseData = []byte(value)
case []byte:
ResponseData = responseData.([]byte)
default:
ResponseData, err = json.Marshal(value)
}
// 返回响应
if err != nil {
panic(fmt.Sprintf("响应 json 数据错误: %v\n", err))
}
// 返回响应
response.WriteHeader(StatusCode)
write, err = response.Write(ResponseData)
if err != nil {
panic(fmt.Sprintf("响应错误: %v\n", err))
}
log = fmt.Sprintf("- %v - %v %v %v byte status %v %v",
request.Host,
request.Method,
request.URL.Path,
write,
request.Proto,
StatusCode,
)
if StatusCode == http.StatusOK {
engine.Log.Info(log)
} else {
engine.Log.Error(log)
}
}
// 处理 HTTP 请求
func (engine *Engine) HandlerHTTP(request *Request, response http.ResponseWriter) (result any) {
// 处理请求前的中间件
result = engine.MiddleWares.processRequest(request)
if result != nil {
return result
}
// 路由处理
handlerFunc, err := engine.Router.routerHandlers(request)
if err != "" {
return Response{Status: http.StatusNotFound, Data: err}
}
// 视图前的中间件
result = engine.MiddleWares.processView(request, handlerFunc)
if result != nil {
return result
}
// 视图处理
viewResponse := handlerFunc(request)
// 返回响应前的中间件
result = engine.MiddleWares.processResponse(request, response)
if result != nil {
return result
}
return viewResponse
}