[UPD] Exception handling

app/controller/__init__.py

@@ -6,7 +6,11 @@ from app.api.cruds.base import create, read, update, delete, read_all
 from app.schema.library import Library
 from ..db.config.config import get_engine_configuration
 
+from sqlalchemy.exc import NoResultFound
+
 from .exceptions import LibraryCreationException
+from .exceptions import LibraryReadException
+from .exceptions import LibraryUpdateException
 
 import logging
 logging.basicConfig(level=logging.DEBUG)
@@ -67,7 +71,8 @@ class LibraryController:
             self._library = libraries[0]
             return True
         return False
-    
+
+    #CRUDS
     def create(self, library:Library):
         try:
             self._library = create(self.session, library)
@@ -76,20 +81,35 @@ class LibraryController:
                 "Cannot create library",
                 f"{e.orig}", 
                 "library",
-                str(library),
-                400
+                str(library)
             )
         return self
     
     def read(self, _id):
-        self._library = read(self.session, _id, Library)
+        try:
+            self._library = read(self.session, _id, Library)
+        except NoResultFound as e:
+            raise LibraryReadException(
+                f"Cannot read Library with id {_id}",
+                f"{e}", 
+                "library",
+                _id
+            )
         return self
     
     def read_all(self):
         self._libraries = read_all(self.session, Library)
         
     def update(self):
-        self.session.commit()
+        try:
+            self.session.commit()
+        except IntegrityError as e:
+            raise LibraryUpdateException(
+                f"Cannot update Library",
+                f"{e}", 
+                "library",
+                None
+            )
 
     def delete(self):
         delete(self.session, self.data)

app/controller/exceptions/__init__.py

@@ -1,2 +1,5 @@
 from .base import LibraryExceptionBase
-from .exc_01001X_create import LibraryCreationException
+from .exc_01000X_data import LibraryDataExection
+from .exc_01001X_create import LibraryCreationException
+from .exc_01002X_read import LibraryReadException
+from .exc_01003X_update import LibraryUpdateException

app/controller/exceptions/base.py

@@ -1,18 +1,26 @@
 class LibraryExceptionBase(Exception):
-    def __init__(self, code, error):
-        self.code = code
+    def __init__(self, name, error, object_name, data, *, status_code=400):
+        self.code = "000000"
+        self.name = name
         self.error = error
+        self.object = object_name
+        self.data = data
+        self.status_code = status_code
     
     def to_dict(self):
         return {
             "status": "error",
+            "name": self.name,
             "code": self.code,
             "error": self.error,
-            "status_code": 400
+            "object": self.object,
+            "data": self.data,
+            "status_code": self.status_code
         }
     
     def __str__(self):
         return f"ERROR {self.code}: {self.error}"
     
     def __repr__(self):
-        return f"LibraryExceptionBase(code={self.code!r}, error={self.error!r})"
+        return f"{self.__class__}(code={self.code!r}, error={self.error!r}), " \
+               f"object={self.object!r}, data={self.data!r}, status_code={self._status_code})"

app/controller/exceptions/exc_01000X_data.py

@@ -0,0 +1,7 @@
+from .base import LibraryExceptionBase
+
+#010010
+class LibraryDataExection(LibraryExceptionBase):
+    def __init__(self, name, error, object_name, data, *, status_code=400):
+        self.code = "010000"
+        super().__init__(name, error, object_name, data, status_code=status_code)

app/controller/exceptions/exc_01001X_create.py

@@ -2,25 +2,6 @@ from .base import LibraryExceptionBase
 
 #010010
 class LibraryCreationException(LibraryExceptionBase):
-    def __init__(self, name, error, object, data, status_code=400):
+    def __init__(self, name, error, object_name, data, *, status_code=400):
         self.code = "010010"
-        self.name = name
-        self.error = error
-        self.object = object
-        self.data = data
-        self.status_code = status_code
-
-    def to_dict(self):
-        return {
-            "status": "error",
-            "name": self.name,
-            "code": self.code,
-            "error": self.error,
-            "object": self.object,
-            "data": self.data,
-            "status_code": self.status_code
-        }
-    
-    def __repr__(self):
-        return f"LibraryCreationException(code={self.code!r}, error={self.error!r}), " \
-               f"object={self.object!r}, data={self.data!r}"
+        super().__init__(name, error, object_name, data, status_code=status_code)

app/controller/exceptions/exc_01002X_read.py

@@ -0,0 +1,7 @@
+from .base import LibraryExceptionBase
+
+#010030
+class LibraryReadException(LibraryExceptionBase):
+    def __init__(self, name, error, object_name, data, status_code=404):
+        super().__init__(name, error, object_name, data, status_code=status_code)
+        self.code = "010030"

app/controller/exceptions/exc_01003X_update.py

@@ -0,0 +1,7 @@
+from .base import LibraryExceptionBase
+
+#010020
+class LibraryUpdateException(LibraryExceptionBase):
+    def __init__(self, name, error, object_name, data, status_code=404):
+        super().__init__(name, error, object_name, data, status_code=status_code)
+        self.code = "010020"

app/controller/functions/__init__.py

@@ -0,0 +1 @@
+from .update_item_key import update_item_key

app/controller/functions/update_item_key.py

@@ -0,0 +1,21 @@
+from ..exceptions import LibraryDataExection
+from ...schema.library import Base
+
+def update_item_key(obj:Base, key, value):
+    if key == "id":
+        raise LibraryDataExection(
+            "id is not updatable",
+            "The key ID is not Updatable",
+            obj.__class__,
+            {key: value}
+        )
+    try:
+        obj.__getattribute__(key)
+    except AttributeError:
+        raise LibraryDataExection(
+            f"{key} not in {obj.__class__}",
+            f"The key {key} is not in {obj.__class__}",
+            obj.__class__,
+            {key: value}
+        )
+    obj.__setattr__(key, value)