feat: introduce openai-specific types for request type matching

Author: gcalmettes

pkg/plugins/gateway/openai_utils.go

@@ -0,0 +1,46 @@
+/*
+Copyright 2024 The Aibrix Team.
+
+Licensed 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 gateway
+
+type (
+	OpenAiRequestType string
+	OpenAiRequestPath string
+)
+
+var (
+	OpenAiRequestChatCompletionsType OpenAiRequestType = "chat-completions"
+	OpenAiRequestCompletionsType     OpenAiRequestType = "completions"
+	OpenAiRequestEmbeddingsType      OpenAiRequestType = "embeddings"
+	OpenAiRequestUnknownType         OpenAiRequestType = "unknown"
+	OpenAiRequestChatCompletionsPath OpenAiRequestPath = "/v1/chat/completions"
+	OpenAiRequestCompletionsPath     OpenAiRequestPath = "/v1/completions"
+	OpenAiRequestEmbeddingsPath      OpenAiRequestPath = "/v1/embeddings"
+	OpenAiRequestUnknownPath         OpenAiRequestPath = ""
+)
+
+func NewOpenAiRequestTypeFromPath(path string) OpenAiRequestType {
+	requestType := OpenAiRequestUnknownType
+	switch path {
+	case string(OpenAiRequestCompletionsPath):
+		requestType = OpenAiRequestCompletionsType
+	case string(OpenAiRequestChatCompletionsPath):
+		requestType = OpenAiRequestChatCompletionsType
+	case string(OpenAiRequestEmbeddingsPath):
+		requestType = OpenAiRequestEmbeddingsType
+	}
+	return requestType
+}