✨ feat: support other OpenAI APIs (#165)

* ✨ feat: support other OpenAI APIs

* 🔖 chore: Update English translation

relay/relay.go

@@ -0,0 +1,85 @@
+package relay
+
+import (
+	"net/http"
+	"one-api/common"
+	"one-api/model"
+	"one-api/providers/azure"
+	"one-api/providers/openai"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+func RelayOnly(c *gin.Context) {
+	provider, _, fail := GetProvider(c, "")
+	if fail != nil {
+		common.AbortWithMessage(c, http.StatusServiceUnavailable, fail.Error())
+		return
+	}
+
+	channel := provider.GetChannel()
+	if channel.Type != common.ChannelTypeOpenAI && channel.Type != common.ChannelTypeAzure {
+		common.AbortWithMessage(c, http.StatusServiceUnavailable, "provider must be of type azureopenai or openai")
+		return
+	}
+
+	// 获取请求的path
+	url := ""
+	path := c.Request.URL.Path
+	openAIProvider, ok := provider.(*openai.OpenAIProvider)
+	if !ok {
+		azureProvider, ok := provider.(*azure.AzureProvider)
+		if !ok {
+			common.AbortWithMessage(c, http.StatusServiceUnavailable, "provider must be of type openai")
+			return
+		}
+		url = azureProvider.GetFullRequestURL(path, "")
+	} else {
+		url = openAIProvider.GetFullRequestURL(path, "")
+	}
+
+	headers := c.Request.Header
+	mapHeaders := provider.GetRequestHeaders()
+	// 设置请求头
+	for k, v := range headers {
+		if _, ok := mapHeaders[k]; ok {
+			continue
+		}
+		mapHeaders[k] = strings.Join(v, ", ")
+	}
+
+	requester := provider.GetRequester()
+	req, err := requester.NewRequest(c.Request.Method, url, requester.WithBody(c.Request.Body), requester.WithHeader(mapHeaders))
+	if err != nil {
+		common.AbortWithMessage(c, http.StatusBadRequest, err.Error())
+		return
+	}
+
+	defer req.Body.Close()
+
+	response, errWithCode := requester.SendRequestRaw(req)
+	if errWithCode != nil {
+		relayResponseWithErr(c, errWithCode)
+		return
+	}
+
+	errWithCode = responseMultipart(c, response)
+
+	if errWithCode != nil {
+		relayResponseWithErr(c, errWithCode)
+		return
+	}
+
+	requestTime := 0
+	requestStartTimeValue := c.Request.Context().Value("requestStartTime")
+	if requestStartTimeValue != nil {
+		requestStartTime, ok := requestStartTimeValue.(time.Time)
+		if ok {
+			requestTime = int(time.Since(requestStartTime).Milliseconds())
+		}
+	}
+	model.RecordConsumeLog(c.Request.Context(), c.GetInt("id"), c.GetInt("channel_id"), 0, 0, "", c.GetString("token_name"), 0, "中继:"+path, requestTime)
+
+}