[New Feature] Rest API implementation to showcase the OpenDBM features

rest_api/app/utils/service_result.py

@@ -0,0 +1,47 @@
+from loguru import logger
+import inspect
+
+from utils.app_exceptions import AppExceptionCase
+
+
+class ServiceResult(object):
+    def __init__(self, arg):
+        if isinstance(arg, AppExceptionCase):
+            self.success = False
+            self.exception_case = arg.exception_case
+            self.status_code = arg.status_code
+        else:
+            self.success = True
+            self.exception_case = None
+            self.status_code = None
+        self.value = arg
+
+    def __str__(self):
+        if self.success:
+            return "[Success]"
+        return f'[Exception] "{self.exception_case}"'
+
+    def __repr__(self):
+        if self.success:
+            return "<ServiceResult Success>"
+        return f"<ServiceResult AppException {self.exception_case}>"
+
+    def __enter__(self):
+        return self.value
+
+    def __exit__(self, *kwargs):
+        pass
+
+
+def caller_info() -> str:
+    info = inspect.getframeinfo(inspect.stack()[2][0])
+    return f"{info.filename}:{info.function}:{info.lineno}"
+
+
+def handle_result(result: ServiceResult):
+    if not result.success:
+        with result as exception:
+            logger.error(f"{exception} | caller={caller_info()}")
+            raise exception
+    with result as result:
+        return result