API: Move OpenAI-compatible API from extensions/openai to modules/api

modules/api/errors.py

@@ -0,0 +1,31 @@
+class OpenAIError(Exception):
+    def __init__(self, message=None, code=500, internal_message=''):
+        self.message = message
+        self.code = code
+        self.internal_message = internal_message
+
+    def __repr__(self):
+        return "%s(message=%r, code=%d)" % (
+            self.__class__.__name__,
+            self.message,
+            self.code,
+        )
+
+
+class InvalidRequestError(OpenAIError):
+    def __init__(self, message, param, code=400, internal_message=''):
+        super().__init__(message, code, internal_message)
+        self.param = param
+
+    def __repr__(self):
+        return "%s(message=%r, code=%d, param=%s)" % (
+            self.__class__.__name__,
+            self.message,
+            self.code,
+            self.param,
+        )
+
+
+class ServiceUnavailableError(OpenAIError):
+    def __init__(self, message="Service unavailable, please try again later.", code=503, internal_message=''):
+        super().__init__(message, code, internal_message)