From 86a50a4f6df9ece982743a3b7ca510846d248909 Mon Sep 17 00:00:00 2001
From: leonoverweel <l.overweel@gmail.com>
Date: Tue, 24 Jan 2017 12:05:15 +0100
Subject: Initial commit

---
 opendc/util/exceptions.py | 61 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 opendc/util/exceptions.py

(limited to 'opendc/util/exceptions.py')

diff --git a/opendc/util/exceptions.py b/opendc/util/exceptions.py
new file mode 100644
index 00000000..56a04ab9
--- /dev/null
+++ b/opendc/util/exceptions.py
@@ -0,0 +1,61 @@
+class RequestInitializationError(Exception):
+    """Raised when a Request cannot successfully be initialized"""
+
+class UnimplementedEndpointError(RequestInitializationError):
+    """Raised when a Request path does not point to a module."""
+
+class MissingRequestParameterError(RequestInitializationError):
+    """Raised when a Request does not contain one or more required parameters."""
+
+class UnsupportedMethodError(RequestInitializationError):
+    """Raised when a Request does not use a supported REST method.
+    
+    The method must be in all-caps, supported by REST, and implemented by the module.
+    """
+
+class AuthorizationTokenError(RequestInitializationError):
+    """Raised when an authorization token is not correctly verified."""
+
+class ForeignKeyError(Exception):
+    """Raised when a foreign key constraint is not met."""
+
+class RowNotFoundError(Exception):
+    """Raised when a database row is not found."""
+
+    def __init__(self, table_name):
+        super(RowNotFoundError, self).__init__(
+            'Row in `{}` table not found.'.format(table_name)
+        )
+
+        self.table_name = table_name
+
+class ParameterError(Exception):
+    """Raised when a paramter is either missing or incorrectly typed."""
+
+class IncorrectParameterError(ParameterError):
+    """Raised when a parameter is of the wrong type."""
+
+    def __init__(self, parameter_name, parameter_location):
+        super(IncorrectParameterError, self).__init__(
+            'Incorrectly typed `{}` {} parameter.'.format(
+                parameter_name,
+                parameter_location
+            )
+        )
+
+        self.parameter_name = parameter_name
+        self.parameter_location = parameter_location
+
+class MissingParameterError(ParameterError):
+    """Raised when a parameter is missing."""
+
+    def __init__(self, parameter_name, parameter_location):
+        super(MissingParameterError, self).__init__(
+            'Missing required `{}` {} parameter.'.format(
+                parameter_name,
+                parameter_location
+            )
+        )
+
+        self.parameter_name = parameter_name
+        self.parameter_location = parameter_location
-- 
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