redirect.go
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package service_gateway
import (
"fmt"
"github.com/beego/beego/v2/client/httplib"
"github.com/beego/beego/v2/server/web"
"github.com/beego/beego/v2/server/web/context"
"github.com/linmadan/egglib-go/log"
"github.com/linmadan/egglib-go/utils/json"
"gitlab.fjmaimaimai.com/allied-creation/allied-creation-manufacture/pkg/constant"
"io/ioutil"
"net/http"
"strings"
)
type internalService interface {
GetResponseData(result Response, data interface{}) error
CreateRequest(url string, method string) *httplib.BeegoHTTPRequest
Host() string
}
func RedirectInternalService(prefix string, svr internalService, log log.Logger) web.FilterFunc {
return func(ctx *context.Context) {
if !strings.HasPrefix(ctx.Request.RequestURI, prefix) {
return
}
var err error
var byteResult []byte
var data = make(map[string]interface{})
defer func() {
if err != nil {
ctx.Output.SetStatus(http.StatusOK)
ctx.Output.JSON(map[string]interface{}{
"msg": err.Error(),
"code": 1,
"data": struct{}{},
}, false, false)
}
}()
method := strings.ToLower(ctx.Request.Method)
url := strings.Replace(ctx.Request.RequestURI, prefix, "", 1)
req := svr.CreateRequest(svr.Host()+url, method)
log.Debug(method + " 请求url：" + svr.Host() + url)
// 传递当前登录信息（可配置）
req.Header("companyId", fmt.Sprintf("%v", constant.MANUFACTURE_DEFAULT_COMPANYID))
req.Header("orgId", fmt.Sprintf("%v", constant.MANUFACTURE_DEFAULT_ORGID))
req.Body(ctx.Input.RequestBody)
response, err := req.Response()
if err != nil {
return
}
if response.StatusCode != http.StatusOK {
err = fmt.Errorf("%v", response.Status)
return
}
byteResult, err = ioutil.ReadAll(response.Body)
if err != nil {
return
}
defer response.Body.Close()
// 透传非json数据
contentType := response.Header.Get("Content-Type")
if contentType != "application/json" {
copyResponse(ctx, response, byteResult)
return
}
var result Response
err = json.Unmarshal(byteResult, &result)
if err != nil {
return
}
err = svr.GetResponseData(result, &data)
if err != nil {
return
}
ctx.Output.SetStatus(http.StatusOK)
ctx.Output.JSON(map[string]interface{}{
"msg": "成功",
"code": 0,
"data": data,
}, false, false)
}
}
func InvokeInternalService(ctx *context.Context, svr internalService, log log.Logger, wrapper func(ctx *context.Context, req *httplib.BeegoHTTPRequest)) (interface{}, error) {
var err error
var byteResult []byte
method := strings.ToLower(ctx.Request.Method)
url := strings.Replace(ctx.Request.RequestURI, "", "", 1)
req := svr.CreateRequest(svr.Host()+url, method)
log.Debug(method + " 请求url：" + svr.Host() + url)
// 传递当前登录信息（可配置）
//req.Header("companyId", fmt.Sprintf("%v", constant.MANUFACTURE_DEFAULT_COMPANYID))
//req.Header("orgId", fmt.Sprintf("%v", constant.MANUFACTURE_DEFAULT_ORGID))
//req.Body(ctx.Input.RequestBody)
if wrapper != nil {
wrapper(ctx, req)
}
response, err := req.Response()
if err != nil {
return nil, err
}
if response.StatusCode != http.StatusOK {
err = fmt.Errorf("%v", response.Status)
return nil, err
}
byteResult, err = ioutil.ReadAll(response.Body)
if err != nil {
return nil, err
}
defer response.Body.Close()
var result Response
err = json.Unmarshal(byteResult, &result)
if err != nil {
return nil, err
}
return ([]byte)(result.Data), nil
}
func copyResponse(ctx *context.Context, response *http.Response, data []byte) {
for k, v := range response.Header {
if len(v) == 0 {
continue
}
ctx.Output.Header(k, strings.Join(v, ","))
}
ctx.Output.SetStatus(response.StatusCode)
ctx.Output.Body(data)
}