fix: catch some StopIteration exceptions

frontend/src/components/charts/PackageCountBarChart.tsx

@@ -31,16 +31,16 @@ export default function PackageCountBarChart({ stats }: PackageCountBarChartProp
         data={{
             labels: ["packages"],
             datasets: [
-                {
-                    label: "archives",
-                    data: [stats.packages ?? 0],
-                    backgroundColor: blue[500],
-                },
                 {
                     label: "bases",
                     data: [stats.bases ?? 0],
                     backgroundColor: indigo[300],
                 },
+                {
+                    label: "archives",
+                    data: [stats.packages ?? 0],
+                    backgroundColor: blue[500],
+                },
             ],
         }}
         options={{
@@ -48,7 +48,7 @@ export default function PackageCountBarChart({ stats }: PackageCountBarChartProp
             responsive: true,
             scales: {
                 x: { stacked: true },
-                y: { stacked: true },
+                y: { stacked: false },
             },
         }}
     />;

frontend/src/components/dialogs/DashboardDialog.tsx

@@ -86,12 +86,12 @@ export default function DashboardDialog({ open, onClose }: DashboardDialogProps)
 
                     <Grid container spacing={2} sx={{ mt: 2 }}>
                         <Grid size={{ xs: 12, md: 6 }}>
-                            <Box sx={{ maxHeight: 300 }}>
+                            <Box sx={{ height: 300 }}>
                                 <PackageCountBarChart stats={status.stats} />
                             </Box>
                         </Grid>
                         <Grid size={{ xs: 12, md: 6 }}>
-                            <Box sx={{ maxHeight: 300, display: "flex", justifyContent: "center", alignItems: "center" }}>
+                            <Box sx={{ height: 300, display: "flex", justifyContent: "center", alignItems: "center" }}>
                                 <StatusPieChart counters={status.packages} />
                             </Box>
                         </Grid>

src/ahriman/core/alpm/pacman_database.py

@@ -138,8 +138,14 @@ class PacmanDatabase(SyncHttpClient):
 
         Args:
             force(bool): force database synchronization (same as ``pacman -Syy``)
+
+        Raises:
+            PacmanError: on operation error (invalid scheme or incomplete configuration)
         """
-        server = next(iter(self.database.servers))
+        try:
+            server = next(iter(self.database.servers))
+        except StopIteration:
+            raise PacmanError("No configured servers available for database") from None
         filename = f"{self.database.name}.files.tar.gz"
         url = f"{server}/{filename}"
 

src/ahriman/core/exceptions.py

@@ -116,6 +116,19 @@ class GitRemoteError(RuntimeError):
         RuntimeError.__init__(self, "Git remote failed")
 
 
+class GPGError(RuntimeError):
+    """
+    PGP/GPG related exception
+    """
+
+    def __init__(self, details: str) -> None:
+        """
+        Args:
+            details(str): details of the exception
+        """
+        RuntimeError.__init__(self, f"GPG operation failed: {details}")
+
+
 class InitializeError(RuntimeError):
     """
     base service initialization exception

src/ahriman/core/housekeeping/archive_rotation_trigger.py

@@ -86,6 +86,11 @@ class ArchiveRotationTrigger(Trigger):
             package(Package): package which has been updated to check for older versions
             pacman(Pacman): alpm wrapper instance
         """
+        # explicit guard to skip process in case if rotation is disabled
+        # this guard is supposed to speedup process
+        if self.keep_built_packages == 0:
+            return
+
         packages: dict[tuple[str, str], Package] = {}
         # we can't use here load_archives, because it ignores versions
         for full_path in filter(package_like, self.paths.archive_for(package.base).iterdir()):
@@ -94,7 +99,7 @@ class ArchiveRotationTrigger(Trigger):
 
         comparator: Callable[[Package, Package], int] = lambda left, right: left.vercmp(right.version)
         to_remove = sorted(packages.values(), key=cmp_to_key(comparator))
-        # 0 will implicitly be translated into [:0], meaning we keep all packages
+
         for single in to_remove[:-self.keep_built_packages]:
             self.logger.info("removing version %s of package %s", single.version, single.base)
             for archive in single.packages.values():

src/ahriman/core/sign/gpg.py

@@ -20,7 +20,7 @@
 from pathlib import Path
 
 from ahriman.core.configuration import Configuration
-from ahriman.core.exceptions import BuildError
+from ahriman.core.exceptions import BuildError, GPGError
 from ahriman.core.http import SyncHttpClient
 from ahriman.core.utils import check_output
 from ahriman.models.sign_settings import SignSettings
@@ -147,12 +147,19 @@ class GPG(SyncHttpClient):
 
         Returns:
             str: full PGP key fingerprint
+
+        Raises:
+            GPGError: if key is in wrong format
         """
-        metadata = check_output("gpg", "--with-colons", "--fingerprint", key, logger=self.logger)
         # fingerprint line will be like
         # fpr:::::::::43A663569A07EE1E4ECC55CC7E3A4240CE3C45C2:
-        fingerprint = next(filter(lambda line: line[:3] == "fpr", metadata.splitlines()))
+        metadata = check_output("gpg", "--with-colons", "--fingerprint", key, logger=self.logger)
-        return fingerprint.split(":")[-2]
+
+        try:
+            fingerprint = next(filter(lambda line: line[:3] == "fpr", metadata.splitlines()))
+            return fingerprint.split(":")[-2]
+        except (IndexError, StopIteration):
+            raise GPGError(f"key {key} has invalid metadata") from None
 
     def key_import(self, server: str, key: str) -> None:
         """

src/ahriman/models/user.py

@@ -88,8 +88,12 @@ class User:
         """
         if not self.password:
             return None
-        algo = next(segment for segment in self.password.split("$") if segment)
+
-        return f"${algo}$"
+        try:
+            algo = next(segment for segment in self.password.split("$") if segment)
+            return f"${algo}$"
+        except StopIteration:
+            return None
 
     @staticmethod
     def generate_password(length: int) -> str:

tests/ahriman/core/alpm/test_pacman_database.py

@@ -183,6 +183,15 @@ def test_sync_files_local(pacman_database: PacmanDatabase, mocker: MockerFixture
     copy_mock.assert_called_once_with(Path("/var/core.files.tar.gz"), pytest.helpers.anyvar(int))
 
 
+def test_sync_files_no_servers(pacman_database: PacmanDatabase) -> None:
+    """
+    must raise PacmanError if no servers are configured
+    """
+    pacman_database.database.servers = []
+    with pytest.raises(PacmanError):
+        pacman_database.sync_files(force=False)
+
+
 def test_sync_files_unknown_source(pacman_database: PacmanDatabase) -> None:
     """
     must raise an exception in case if server scheme is unsupported

tests/ahriman/core/sign/test_gpg.py

@@ -5,6 +5,7 @@ from pathlib import Path
 from pytest_mock import MockerFixture
 
 from ahriman.core.configuration import Configuration
+from ahriman.core.exceptions import GPGError
 from ahriman.core.sign.gpg import GPG
 from ahriman.models.sign_settings import SignSettings
 
@@ -113,6 +114,15 @@ fpr:::::::::43A663569A07EE1E4ECC55CC7E3A4240CE3C45C2:""")
     check_output_mock.assert_called_once_with("gpg", "--with-colons", "--fingerprint", key, logger=gpg.logger)
 
 
+def test_key_fingerprint_invalid(gpg: GPG, mocker: MockerFixture) -> None:
+    """
+    must raise GPGError if no fingerprint found in output
+    """
+    mocker.patch("ahriman.core.sign.gpg.check_output", return_value="no fingerprint here")
+    with pytest.raises(GPGError):
+        gpg.key_fingerprint("0xCE3C45C2")
+
+
 def test_key_import(gpg: GPG, mocker: MockerFixture) -> None:
     """
     must import PGP key from the server

tests/ahriman/models/test_user.py

@@ -12,6 +12,8 @@ def test_algo() -> None:
     """
     assert User(username="user", password=None, access=UserAccess.Read).algo is None
     assert User(username="user", password="", access=UserAccess.Read).algo is None
+    assert User(username="user", password="$$$", access=UserAccess.Read).algo is None
+
     assert User(
         username="user",
         password="$6$rounds=656000$mWBiecMPrHAL1VgX$oU4Y5HH8HzlvMaxwkNEJjK13ozElyU1wAHBoO/WW5dAaE4YEfnB0X3FxbynKMl4FBdC3Ovap0jINz4LPkNADg0",