EXPERIMENT: Add a postgresql debver type

mdellweg · mdellweg · commit 2c5f3565e7eb · 2025-09-15T12:22:13.000+02:00
Alternative idea: Add a specific (autogenerated) version_sortkey field.
diff --git a/pulp_deb/app/migrations/0032_debver.py b/pulp_deb/app/migrations/0032_debver.py
@@ -0,0 +1,165 @@
+# Generated by Django 4.2.24 on 2025-09-10 07:38
+
+from django.db import migrations
+import pulp_deb.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("deb", "0031_add_domains"),
+    ]
+
+    operations = [
+        migrations.RunSQL(
+            sql="""
+            CREATE COLLATION debver (provider='ICU', deterministic=false, locale='und', rules=$$
+              [reorder digit latn symbol punct others][numericOrdering on]
+              &[first variable]<'~'<'\\u0000'
+            $$);
+
+            CREATE TYPE debver AS
+            (
+              sort_key TEXT COLLATE debver,
+              value TEXT
+            );
+
+            CREATE FUNCTION debver(value bpchar) RETURNS debver
+            AS $$
+            DECLARE
+              pos integer;
+              rest bpchar;
+              epoch bpchar;
+              version bpchar;
+              revision bpchar;
+            BEGIN
+              pos := position(':' IN value);
+              IF pos > 0
+              THEN
+                epoch := left(value, pos - 1);
+                rest := right(value, -pos);
+              ELSE
+                epoch := '0';
+                rest := value;
+              END IF;
+              pos := position('-' IN reverse(rest));
+              IF pos > 0
+              THEN
+                version := left(rest, -pos);
+                revision := right(rest, pos -1);
+              ELSE
+                version := rest;
+                revision := '';
+              END IF;
+              return (epoch || '\ufffd' || version || '\u0000\ufffd' || revision || '\u0000', value)::debver;
+            END;
+            $$
+            LANGUAGE plpgsql
+            IMMUTABLE
+            RETURNS NULL ON NULL INPUT;
+
+            CREATE FUNCTION text(version debver) RETURNS text
+            AS $$
+            BEGIN
+              RETURN version.value;
+            END;
+            $$
+            LANGUAGE plpgsql
+            IMMUTABLE
+            RETURNS NULL ON NULL INPUT;
+
+            CREATE CAST (text AS debver) WITH FUNCTION debver(bpchar) AS IMPLICIT;
+            CREATE CAST (varchar AS debver) WITH FUNCTION debver(bpchar) AS IMPLICIT;
+            CREATE CAST (bpchar AS debver) WITH FUNCTION debver(bpchar) AS IMPLICIT;
+            CREATE CAST (debver AS text) WITH FUNCTION text(debver) AS IMPLICIT;
+            CREATE CAST (debver AS varchar) WITH FUNCTION text(debver) AS IMPLICIT;
+            CREATE CAST (debver AS bpchar) WITH FUNCTION text(debver) AS IMPLICIT;
+
+            CREATE FUNCTION debver_eq(a debver, b debver) RETURNS boolean
+            LANGUAGE sql
+            IMMUTABLE
+            RETURNS NULL ON NULL INPUT
+            RETURN a.sort_key = b.sort_key;
+
+            CREATE FUNCTION debver_neq(a debver, b debver) RETURNS boolean
+            LANGUAGE sql
+            IMMUTABLE
+            RETURNS NULL ON NULL INPUT
+            RETURN a.sort_key <> b.sort_key;
+
+            CREATE FUNCTION debver_lt(a debver, b debver) RETURNS boolean
+            LANGUAGE sql
+            IMMUTABLE
+            RETURNS NULL ON NULL INPUT
+            RETURN a.sort_key < b.sort_key;
+
+            CREATE FUNCTION debver_lte(a debver, b debver) RETURNS boolean
+            LANGUAGE sql
+            IMMUTABLE
+            RETURNS NULL ON NULL INPUT
+            RETURN a.sort_key <= b.sort_key;
+
+            CREATE FUNCTION debver_gte(a debver, b debver) RETURNS boolean
+            LANGUAGE sql
+            IMMUTABLE
+            RETURNS NULL ON NULL INPUT
+            RETURN a.sort_key >= b.sort_key;
+
+            CREATE FUNCTION debver_gt(a debver, b debver) RETURNS boolean
+            LANGUAGE sql
+            IMMUTABLE
+            RETURNS NULL ON NULL INPUT
+            RETURN a.sort_key > b.sort_key;
+
+            CREATE OPERATOR = (
+              LEFTARG = debver,
+              RIGHTARG = debver,
+              FUNCTION = debver_eq
+            );
+
+            CREATE OPERATOR <> (
+              LEFTARG = debver,
+              RIGHTARG = debver,
+              FUNCTION = debver_neq
+            );
+
+            CREATE OPERATOR < (
+              LEFTARG = debver,
+              RIGHTARG = debver,
+              FUNCTION = debver_lt
+            );
+
+            CREATE OPERATOR <= (
+              LEFTARG = debver,
+              RIGHTARG = debver,
+              FUNCTION = debver_lte
+            );
+
+            CREATE OPERATOR >= (
+              LEFTARG = debver,
+              RIGHTARG = debver,
+              FUNCTION = debver_gte
+            );
+
+            CREATE OPERATOR > (
+              LEFTARG = debver,
+              RIGHTARG = debver,
+              FUNCTION = debver_gt
+            );
+            """,
+            reverse_sql="""
+            DROP TYPE IF EXISTS debver CASCADE;
+            DROP COLLATION IF EXISTS debver;
+            """,
+        ),
+        migrations.AlterField(
+            model_name="installerpackage",
+            name="version",
+            field=pulp_deb.fields.DebVersionField(),
+        ),
+        migrations.AlterField(
+            model_name="package",
+            name="version",
+            field=pulp_deb.fields.DebVersionField(),
+        ),
+    ]
diff --git a/pulp_deb/app/models/content/content.py b/pulp_deb/app/models/content/content.py
@@ -16,6 +16,8 @@
 from pulpcore.plugin.models import Content
 from pulpcore.plugin.util import get_domain_pk
 
+from pulp_deb.fields import DebVersionField
+
 BOOL_CHOICES = [(True, "yes"), (False, "no")]
 
 
@@ -33,7 +35,7 @@ class BasePackage(Content):
 
     package = models.TextField()  # package name
     source = models.TextField(null=True)  # source package name
-    version = models.TextField()
+    version = DebVersionField()
     architecture = models.TextField()  # all, i386, ...
     section = models.TextField(null=True)  # admin, comm, database, ...
     priority = models.TextField(null=True)  # required, standard, optional, extra
diff --git a/pulp_deb/app/viewsets/content.py b/pulp_deb/app/viewsets/content.py
@@ -205,7 +205,7 @@ class Meta:
         fields = {
             "package": NAME_FILTER_OPTIONS,
             "source": ["exact"],
-            "version": ["exact"],
+            "version": ["exact", "ne", "lt", "lte", "gt", "gte"],
             "architecture": ["exact"],
             "section": ["exact"],
             "priority": ["exact"],
diff --git a/pulp_deb/fields.py b/pulp_deb/fields.py
@@ -0,0 +1,24 @@
+from django.db import models
+
+
+class _DebVer(models.Value):
+    def __init__(self, value):
+        self.value = value
+
+    def as_sql(self, compiler, connection):
+        return "debver(%s)", [self.value]
+
+
+class DebVersionField(models.CharField):
+    description = "Debian Version"
+
+    def db_type(self, connection):
+        return "debver"
+
+    def get_prep_value(self, value):
+        if value is not None:
+            return _DebVer(value)
+        return value
+
+    def select_format(self, compiler, sql, params):
+        return f"({sql}).value", params
diff --git a/pulp_deb/tests/conftest.py b/pulp_deb/tests/conftest.py
@@ -1,6 +1,8 @@
 import pytest
 from pathlib import Path
 
+from pulpcore.tests.functional.utils import BindingsNamespace
+
 from pulp_deb.tests.functional.utils import gen_deb_remote, gen_distribution, gen_repo
 from pulp_deb.tests.functional.constants import DEB_FIXTURE_STANDARD_REPOSITORY_NAME
 
@@ -16,6 +18,21 @@
 )
 
 
+@pytest.fixture(scope="session")
+def deb_bindings(_api_client_set, bindings_cfg):
+    """
+    A namespace providing preconfigured pulpcore api clients.
+
+    e.g. `pulpcore_bindings.WorkersApi.list()`.
+    """
+    from pulpcore.client import pulp_deb as bindings_module
+
+    api_client = bindings_module.ApiClient(bindings_cfg)
+    _api_client_set.add(api_client)
+    yield BindingsNamespace(bindings_module, api_client)
+    _api_client_set.remove(api_client)
+
+
 @pytest.fixture(scope="session")
 def apt_client(_api_client_set, bindings_cfg):
     """Fixture for APT client."""
@@ -124,7 +141,7 @@ def _deb_remote_factory(url, **kwargs):
     return _deb_remote_factory
 
 
-@pytest.fixture
+@pytest.fixture(scope="class")
 def deb_sync_repository(apt_repository_api, monitor_task):
     """Fixture that synchronizes a given repository with a given remote
     and returns the monitored task.
@@ -148,15 +165,15 @@ def _deb_sync_repository(remote, repo, mirror=False, optimize=True):
     return _deb_sync_repository
 
 
-@pytest.fixture
+@pytest.fixture(scope="class")
 def deb_fixture_server(gen_fixture_server):
     """A fixture that spins up a local web server to serve test data."""
     p = Path(__file__).parent.absolute()
     fixture_path = p.joinpath("functional/data/")
     yield gen_fixture_server(fixture_path, None)
 
 
-@pytest.fixture
+@pytest.fixture(scope="class")
 def deb_get_fixture_server_url(deb_fixture_server):
     """A fixture that provides the url of the local web server."""
 
@@ -171,7 +188,7 @@ def _deb_get_fixture_server_url(repo_name=DEB_FIXTURE_STANDARD_REPOSITORY_NAME):
     return _deb_get_fixture_server_url
 
 
-@pytest.fixture
+@pytest.fixture(scope="class")
 def deb_init_and_sync(
     apt_repository_api,
     deb_get_fixture_server_url,
diff --git a/pulp_deb/tests/functional/api/test_filter.py b/pulp_deb/tests/functional/api/test_filter.py
@@ -0,0 +1,36 @@
+import pytest
+
+
+@pytest.mark.parallel
+class TestPackageVersionFilter:
+    @pytest.fixture(scope="class")
+    def repository(self, deb_init_and_sync):
+        _repository, _ = deb_init_and_sync()
+        return _repository
+
+    @pytest.mark.parametrize(
+        "filter,count",
+        [
+            pytest.param({"version": "1.0"}, 4, id="exact"),
+            pytest.param({"version__ne": "1.0"}, 0, id="ne"),
+            pytest.param({"version__gt": "1.0~"}, 4, id="gt with tilde"),
+            pytest.param({"version__gt": "1.0"}, 0, id="gt"),
+            pytest.param({"version__gt": "1.0+"}, 0, id="gt with plus"),
+            pytest.param({"version__gte": "1.0~"}, 4, id="gte with tilde"),
+            pytest.param({"version__gte": "1.0"}, 4, id="gte"),
+            pytest.param({"version__gte": "1.0+"}, 0, id="gte with plus"),
+            pytest.param({"version__lt": "1.0~"}, 0, id="lt with tilde"),
+            pytest.param({"version__lt": "1.0"}, 0, id="lt"),
+            pytest.param({"version__lt": "1.0+"}, 4, id="lt with plus"),
+            pytest.param({"version__lte": "1.0~"}, 0, id="lte with tilde"),
+            pytest.param({"version__lte": "1.0"}, 4, id="lte"),
+            pytest.param({"version__lte": "1.0+"}, 4, id="lte with plus"),
+        ],
+    )
+    def test_returns_a_certain_count_of_entries(self, deb_bindings, repository, filter, count):
+        """Verify that Packages can be filtered by versions."""
+        # Query content units with filters
+        result = deb_bindings.ContentPackagesApi.list(
+            repository_version=repository.latest_version_href, **filter
+        )
+        assert result.count == count
diff --git a/pyproject.toml b/pyproject.toml
@@ -28,7 +28,7 @@ requires-python = ">=3.11"
 dependencies = [
   # All things django and asyncio are deliberately left to pulpcore
   # Example transitive requirements: asgiref, asyncio, aiohttp
-  "pulpcore>=3.75.0,<3.100",
+  "pulpcore>=3.85.0,<3.100",
   "python-debian>=0.1.44,<0.2.0",
   "python-gnupg>=0.5,<0.6",
   "jsonschema>=4.6,<5.0",
