MCOL-5496: Merge CMAPI code to engine repo.

[add] cmapi code to engine

cmapi/cmapi_server/exceptions.py

@@ -0,0 +1,22 @@
+"""Module contains custom exceptions."""
+
+
+class CMAPIBasicError(Exception):
+    """Basic exception raised for CMAPI related processes.
+
+    Attributes:
+        message -- explanation of the error
+    """
+    def __init__(self, message: str) -> None:
+        self.message = message
+        super().__init__(self.message)
+    def __str__(self) -> str:
+        return self.message
+
+
+class CEJError(CMAPIBasicError):
+    """Exception raised for CEJ related processes.
+
+    Attributes:
+        message -- explanation of the error
+    """