frozen dataclasses

src/ahriman/application/handlers/users.py

@@ -149,7 +149,7 @@ class Users(Handler):
         Returns:
             User: built user descriptor
         """
-        user = User(args.username, args.password, args.role)
-        if user.password is None:
-            user.password = getpass.getpass()
-        return user
+        password = args.password
+        if password is None:
+            password = getpass.getpass()
+        return User(username=args.username, password=password, access=args.role)

src/ahriman/core/database/migrations/__init__.py

@@ -83,7 +83,7 @@ class Migrations(LazyLogging):
             module = import_module(f"{__name__}.{module_name}")
             steps: List[str] = getattr(module, "steps", [])
             self.logger.debug("found migration %s at index %s with steps count %s", module_name, index, len(steps))
-            migrations.append(Migration(index, module_name, steps))
+            migrations.append(Migration(index=index, name=module_name, steps=steps))
 
         return migrations
 
@@ -97,7 +97,7 @@ class Migrations(LazyLogging):
         migrations = self.migrations()
         current_version = self.user_version()
         expected_version = len(migrations)
-        result = MigrationResult(current_version, expected_version)
+        result = MigrationResult(old_version=current_version, new_version=expected_version)
 
         if not result.is_outdated:
             self.logger.info("no migrations required")

src/ahriman/core/database/operations/auth_operations.py

@@ -58,7 +58,7 @@ class AuthOperations(Operations):
 
         def run(connection: Connection) -> List[User]:
             return [
-                User(cursor["username"], cursor["password"], UserAccess(cursor["access"]))
+                User(username=cursor["username"], password=cursor["password"], access=UserAccess(cursor["access"]))
                 for cursor in connection.execute(
                     """
                     select * from users

src/ahriman/core/database/operations/package_operations.py

@@ -154,7 +154,11 @@ class PackageOperations(Operations):
             Dict[str, Package]: map of the package base to its descriptor (without packages themselves)
         """
         return {
-            row["package_base"]: Package(row["package_base"], row["version"], RemoteSource.from_json(row), {})
+            row["package_base"]: Package(
+                base=row["package_base"],
+                version=row["version"],
+                remote=RemoteSource.from_json(row),
+                packages={})
             for row in connection.execute("""select * from package_bases""")
         }
 

src/ahriman/core/status/client.py

@@ -80,7 +80,7 @@ class Client:
         Returns:
             InternalStatus: current internal (web) service status
         """
-        return InternalStatus(BuildStatus())
+        return InternalStatus(status=BuildStatus())
 
     def remove(self, base: str) -> None:
         """

src/ahriman/core/status/web_client.py

@@ -189,7 +189,7 @@ class WebClient(Client, LazyLogging):
             self.logger.exception("could not get web service status: %s", exception_response_text(e))
         except Exception:
             self.logger.exception("could not get web service status")
-        return InternalStatus(BuildStatus())
+        return InternalStatus(status=BuildStatus())
 
     def remove(self, base: str) -> None:
         """

src/ahriman/models/aur_package.py

@@ -29,7 +29,7 @@ from typing import Any, Callable, Dict, List, Optional, Type
 from ahriman.core.util import filter_json, full_version
 
 
-@dataclass
+@dataclass(frozen=True, kw_only=True)
 class AURPackage:
     """
     AUR package descriptor

src/ahriman/models/build_status.py

@@ -47,7 +47,7 @@ class BuildStatusEnum(str, Enum):
     Success = "success"
 
 
-@dataclass
+@dataclass(frozen=True)
 class BuildStatus:
     """
     build status holder
@@ -64,7 +64,7 @@ class BuildStatus:
         """
         convert status to enum type
         """
-        self.status = BuildStatusEnum(self.status)
+        object.__setattr__(self, "status", BuildStatusEnum(self.status))
 
     @classmethod
     def from_json(cls: Type[BuildStatus], dump: Dict[str, Any]) -> BuildStatus:

src/ahriman/models/counters.py

@@ -27,7 +27,7 @@ from ahriman.models.build_status import BuildStatus
 from ahriman.models.package import Package
 
 
-@dataclass
+@dataclass(frozen=True, kw_only=True)
 class Counters:
     """
     package counters

src/ahriman/models/internal_status.py

@@ -26,7 +26,7 @@ from ahriman.models.build_status import BuildStatus
 from ahriman.models.counters import Counters
 
 
-@dataclass
+@dataclass(frozen=True, kw_only=True)
 class InternalStatus:
     """
     internal server status

src/ahriman/models/migration.py

@@ -21,7 +21,7 @@ from dataclasses import dataclass
 from typing import List
 
 
-@dataclass
+@dataclass(frozen=True, kw_only=True)
 class Migration:
     """
     migration implementation

src/ahriman/models/migration_result.py

@@ -22,7 +22,7 @@ from dataclasses import dataclass
 from ahriman.core.exceptions import MigrationError
 
 
-@dataclass
+@dataclass(frozen=True, kw_only=True)
 class MigrationResult:
     """
     migration result implementation model

src/ahriman/models/package.py

@@ -38,7 +38,7 @@ from ahriman.models.remote_source import RemoteSource
 from ahriman.models.repository_paths import RepositoryPaths
 
 
-@dataclass
+@dataclass(kw_only=True)
 class Package(LazyLogging):
     """
     package properties representation
@@ -147,7 +147,7 @@ class Package(LazyLogging):
         """
         package = pacman.handle.load_pkg(str(path))
         description = PackageDescription.from_package(package, path)
-        return cls(package.base, package.version, remote, {package.name: description})
+        return cls(base=package.base, version=package.version, remote=remote, packages={package.name: description})
 
     @classmethod
     def from_aur(cls: Type[Package], name: str, pacman: Pacman) -> Package:
@@ -163,7 +163,11 @@ class Package(LazyLogging):
         """
         package = AUR.info(name, pacman=pacman)
         remote = RemoteSource.from_source(PackageSource.AUR, package.package_base, package.repository)
-        return cls(package.package_base, package.version, remote, {package.name: PackageDescription()})
+        return cls(
+            base=package.package_base,
+            version=package.version,
+            remote=remote,
+            packages={package.name: PackageDescription()})
 
     @classmethod
     def from_build(cls: Type[Package], path: Path) -> Package:
@@ -186,7 +190,7 @@ class Package(LazyLogging):
         packages = {key: PackageDescription() for key in srcinfo["packages"]}
         version = full_version(srcinfo.get("epoch"), srcinfo["pkgver"], srcinfo["pkgrel"])
 
-        return cls(srcinfo["pkgbase"], version, None, packages)
+        return cls(base=srcinfo["pkgbase"], version=version, remote=None, packages=packages)
 
     @classmethod
     def from_json(cls: Type[Package], dump: Dict[str, Any]) -> Package:
@@ -204,11 +208,7 @@ class Package(LazyLogging):
             for key, value in dump.get("packages", {}).items()
         }
         remote = dump.get("remote", {})
-        return cls(
-            base=dump["base"],
-            version=dump["version"],
-            remote=RemoteSource.from_json(remote),
-            packages=packages)
+        return cls(base=dump["base"], version=dump["version"], remote=RemoteSource.from_json(remote), packages=packages)
 
     @classmethod
     def from_official(cls: Type[Package], name: str, pacman: Pacman, use_syncdb: bool = True) -> Package:
@@ -225,7 +225,11 @@ class Package(LazyLogging):
         """
         package = OfficialSyncdb.info(name, pacman=pacman) if use_syncdb else Official.info(name, pacman=pacman)
         remote = RemoteSource.from_source(PackageSource.Repository, package.package_base, package.repository)
-        return cls(package.package_base, package.version, remote, {package.name: PackageDescription()})
+        return cls(
+            base=package.package_base,
+            version=package.version,
+            remote=remote,
+            packages={package.name: PackageDescription()})
 
     @staticmethod
     def dependencies(path: Path) -> Set[str]:

src/ahriman/models/package_description.py

@@ -27,7 +27,7 @@ from typing import Any, Dict, List, Optional, Type
 from ahriman.core.util import filter_json
 
 
-@dataclass
+@dataclass(kw_only=True)
 class PackageDescription:
     """
     package specific properties

src/ahriman/models/property.py

@@ -17,11 +17,11 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 #
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from typing import Any
 
 
-@dataclass
+@dataclass(frozen=True)
 class Property:
     """
     holder of object properties descriptor
@@ -34,4 +34,4 @@ class Property:
 
     name: str
     value: Any
-    is_required: bool = False
+    is_required: bool = field(default=False, kw_only=True)

src/ahriman/models/remote_source.py

@@ -27,7 +27,7 @@ from ahriman.core.util import filter_json
 from ahriman.models.package_source import PackageSource
 
 
-@dataclass
+@dataclass(frozen=True, kw_only=True)
 class RemoteSource:
     """
     remote package source properties
@@ -50,7 +50,7 @@ class RemoteSource:
         """
         convert source to enum type
         """
-        self.source = PackageSource(self.source)
+        object.__setattr__(self, "source", PackageSource(self.source))
 
     @property
     def pkgbuild_dir(self) -> Path:

src/ahriman/models/repository_paths.py

@@ -29,7 +29,7 @@ from typing import Set, Tuple, Type
 from ahriman.core.exceptions import InvalidPath
 
 
-@dataclass
+@dataclass(frozen=True)
 class RepositoryPaths:
     """
     repository paths holder. For the most operations with paths you want to use this object

src/ahriman/models/user.py

@@ -19,7 +19,7 @@
 #
 from __future__ import annotations
 
-from dataclasses import dataclass
+from dataclasses import dataclass, replace
 from typing import Optional, Type
 from passlib.pwd import genword as generate_password  # type: ignore
 from passlib.handlers.sha2_crypt import sha512_crypt  # type: ignore
@@ -27,7 +27,7 @@ from passlib.handlers.sha2_crypt import sha512_crypt  # type: ignore
 from ahriman.models.user_access import UserAccess
 
 
-@dataclass
+@dataclass(frozen=True, kw_only=True)
 class User:
     """
     authorized web user model
@@ -82,7 +82,7 @@ class User:
         """
         if username is None or password is None:
             return None
-        return cls(username, password, access)
+        return cls(username=username, password=password, access=access)
 
     @staticmethod
     def generate_password(length: int) -> str:
@@ -130,7 +130,7 @@ class User:
             # when we do not store any password here
             return self
         password_hash: str = self._HASHER.hash(self.password + salt)
-        return User(self.username, password_hash, self.access)
+        return replace(self, password=password_hash)
 
     def verify_access(self, required: UserAccess) -> bool:
         """

src/ahriman/models/user_identity.py

@@ -25,7 +25,7 @@ from dataclasses import dataclass
 from typing import Optional, Type
 
 
-@dataclass
+@dataclass(frozen=True)
 class UserIdentity:
     """
     user identity used inside web service