Tons of new tests and new_model refinement

async_tests/test_async_ldap_new_model.py

@@ -8,6 +8,7 @@ import pytest
 
 from phi.async_ldap.new_model import get_dn, User
 from phi.async_ldap.mixins import Member
+from phi.exceptions import PhiCannotExecute
 
 BASE_DN = "dc=test,dc=domain,dc=tld"
 
@@ -87,6 +88,34 @@ def test_get_dn_raises():
     assert "Unacceptable input:" in str(e.value)
 
 
+def test_repr():
+    _cl = MockClient(return_value=None)
+    u = User(_cl, "test_user")
+
+    assert repr(u) == f"<User uid=test_user,ou=Hackers,{BASE_DN}>"
+
+
+def test_str():
+    _cl = MockClient(return_value=None)
+    u = User(_cl, "test_user")
+
+    assert str(u) == f"<User uid=test_user,ou=Hackers,{BASE_DN}>"
+
+
+@pytest.mark.parametrize(
+    "input_obj",
+    [
+        User(cl, "test_user"),
+        LDAPEntry(f"uid=test_user,ou=Hackers,{BASE_DN}"),
+        f"uid=test_user,ou=Hackers,{BASE_DN}",
+    ],
+)
+def test_eq(input_obj):
+    u = User(cl, "test_user")
+
+    assert u == input_obj
+
+
 @pytest.mark.asyncio
 async def test_User_add():
     _cl = MockClient(return_value=None)
@@ -141,3 +170,27 @@ async def test_User_delete():
 
     assert _cl.connect_called
     assert await _cl.connect_called_with_delete()
+
+
+@pytest.mark.asyncio
+async def test_User_get_invalid_attr_raises():
+    _cl = MockClient(return_value=None)
+    u = User(_cl, "test_user")
+
+    with pytest.raises(PhiCannotExecute) as ex:
+        _ = u["iDoNotExist"]
+
+    assert "iDoNotExist" in str(ex.value)
+    assert "is not an allowed ldap attribute" in str(ex.value)
+
+
+@pytest.mark.asyncio
+async def test_User_set_invalid_attr_raises():
+    _cl = MockClient(return_value=None)
+    u = User(_cl, "test_user")
+
+    with pytest.raises(PhiCannotExecute) as ex:
+        u["iDoNotExist"] = "hello"
+
+    assert "iDoNotExist" in str(ex.value)
+    assert "is not an allowed ldap attribute" in str(ex.value)

integration_tests/test_model.py

@@ -61,6 +61,27 @@ async def init_achilles():
     return u
 
 
+async def init_patroclus():
+    u = User(cl, "patroclus")
+    u["cn"] = "Patroclus"
+    u["sn"] = "patroclus"
+    u["mail"] = "patroclus@phthia.gr"
+    u["userPassword"] = "WannabeAnHero"
+
+    await u.save()
+
+    return u
+
+
+async def init_athena():
+    s = Service(cl, "athena")
+    s["userPassword"] = "ἁ θεονόα"
+
+    await s.save()
+
+    return s
+
+
 async def init_group(group_name, members):
     g = Group(cl, group_name, member=members)
 
@@ -82,6 +103,49 @@ async def test_User_init():
         assert u == res
 
 
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_User_exists():
+    async with clean_db():
+        u1 = await init_achilles()
+        u2 = User(cl, "enea")
+
+        assert await u1.exists()
+        assert not await u2.exists()
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_User_double_save_raises():
+    async with clean_db():
+        u = await init_achilles()
+        # Read all the data from the db
+        await u.sync()
+
+        with pytest.raises(e.PhiEntryExists) as ex:
+            await u.save()
+
+        assert u.dn in str(ex.value)
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_User_describe():
+    async with clean_db():
+        u = await init_achilles()
+
+        res = await u.describe()
+
+        assert res == {
+            "ou": "Hackers",
+            "uid": "achilles",
+            "cn": "Achilles",
+            "sn": "achilles",
+            "dn": f"uid=achilles,ou=Hackers,{BASE_DN}",
+            "mail": "achilles@phthia.gr",
+        }
+
+
 @pytest.mark.asyncio
 @pytest.mark.integration_test
 async def test_User_modify():
@@ -101,6 +165,19 @@ async def test_User_modify():
             assert u[attr] == res[attr]
 
 
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_User_modify_raises():
+    """Modifying a not-yet-existing user raises."""
+    async with clean_db():
+        u = User(cl, "enea")
+
+        with pytest.raises(e.PhiEntryDoesNotExist) as ex:
+            await u.modify()
+
+        assert u.dn in str(ex.value)
+
+
 @pytest.mark.asyncio
 @pytest.mark.integration_test
 async def test_User_delete():
@@ -116,6 +193,34 @@ async def test_User_delete():
         assert u.dn in str(ex.value)
 
 
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_Service_init():
+    async with clean_db():
+        s = await init_athena()
+
+        r = Robots(cl)
+
+        res = await r.search("athena")
+
+        assert s == res
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_Service_describe():
+    async with clean_db():
+        s = await init_athena()
+
+        res = await s.describe()
+
+        assert res == {
+            "ou": "Robots",
+            "uid": "athena",
+            "dn": f"uid=athena,ou=Robots,{BASE_DN}",
+        }
+
+
 @pytest.mark.asyncio
 @pytest.mark.integration_test
 async def test_Group_init():
@@ -128,4 +233,130 @@ async def test_Group_init():
         res = await c.search("achaeans")
 
         assert g == res
-        assert [u] == [a for a in g.get_members()]
+        assert [u] == [a async for a in g.get_members()]
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_Group_describe():
+    async with clean_db():
+        u1 = await init_achilles()
+        u2 = await init_patroclus()
+        g = await init_group("achaeans", [u1, u2])
+
+        res = await g.describe()
+
+        assert res == {
+            "ou": "Congregations",
+            "cn": "achaeans",
+            "dn": f"cn=achaeans,ou=Congregations,{BASE_DN}",
+            "member": [u1.dn, u2.dn],
+        }
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_Group_add_member():
+    async with clean_db():
+        u = await init_achilles()
+        a = await init_athena()
+        g1 = await init_group("achaeans", [u])
+        g2 = await init_group("gods", [u])
+
+        await g2.add_member(a)
+
+        m1 = [m async for m in g1.get_members()]
+        m2 = [m async for m in g2.get_members()]
+
+        assert u in m1
+        assert u in m2
+        assert a not in m1
+        assert a in m2
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_Group_remove_member():
+    async with clean_db():
+        u = await init_achilles()
+        a = await init_athena()
+        g = await init_group("achaeans", [u, a])
+
+        m = [a async for a in g.get_members()]
+
+        assert u in m
+        assert a in m
+
+        await g.remove_member(a)
+
+        assert [u] == [el async for el in g.get_members()]
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_User_groups():
+    async with clean_db():
+        u = await init_achilles()
+        a = await init_athena()
+        g1 = await init_group("achaeans", [u])
+        g2 = await init_group("gods", [u, a])
+
+        res1 = await u.groups()
+        res2 = await a.groups()
+
+        assert g1 in res1
+        assert g2 in res1
+        assert g1 not in res2
+        assert g2 in res2
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_OU_delete_raises():
+    async with clean_db():
+        u1 = await init_achilles()
+        u2 = await init_patroclus()
+        a = await init_athena()
+        g1 = await init_group("achaeans", [u1, u2])
+        g2 = await init_group("gods", [a, u1])
+        h = Hackers(cl)
+        _saved_val = h.delete_cascade
+        h.delete_cascade = False
+
+        assert not h.delete_cascade
+
+        with pytest.raises(e.PhiCannotExecute) as ex:
+            await h.delete()
+
+        assert "delete_cascade is not set" in str(ex.value)
+
+        h.delete_cascade = _saved_val
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration_test
+async def test_OU_delete_cascade():
+    async with clean_db():
+        u1 = await init_achilles()
+        u2 = await init_patroclus()
+        a = await init_athena()
+        g1 = await init_group("achaeans", [u1, u2])
+        g2 = await init_group("gods", [a, u1])
+        h = Hackers(cl)
+        _saved_val = h.delete_cascade
+        h.delete_cascade = True
+
+        assert h.delete_cascade
+
+        await h.delete()
+        g2_members = [e async for e in g2.get_members()]
+        h_members = [e async for e in h]
+
+        assert not await u1.exists()
+        assert not await u2.exists()
+        assert h_members == []
+        assert not await g1.exists()
+        assert u1 not in g2_members
+        assert a in g2_members
+
+        h.delete_cascade = _saved_val

src/phi/async_ldap/mixins.py

@@ -15,6 +15,15 @@ from phi.exceptions import (
 from phi.security import hash_pass, handle_password
 
 
+def de_listify(elems):
+    if not isinstance(elems, list):
+        return elems
+    if len(elems) == 1:
+        return elems[0]
+    else:
+        return elems
+
+
 async def build_heritage(obj, child_class, attribute_id="uid"):
     """
     Given the object and the child class, yields the
@@ -44,40 +53,17 @@ class Singleton(object):
         return cls._instances[name]
 
 
-def get_value(obj, attr):
-    """
-    Return the tuple (attribute_name, attribute_value) from obj. Extract the value,
-    either it being a constant or the result of a function call.
-    """
-    if not isinstance(getattr(type(obj), attr), property) and callable(
-        getattr(type(obj), attr)
-    ):
-        return attr, getattr(obj, attr)()
-    else:
-        return attr, getattr(obj, attr)
-
-
 class Entry(object):
     """
     Mixin to interact with LDAP.
     """
 
-    def get_all_ldap_attributes(self):
-        return [get_value(self, attr) for attr in self.ldap_attributes]
-
     def __repr__(self):
         return f"<{self.__class__.__name__} {self.dn}>"
 
     def __str__(self):
         return f"<{self.__class__.__name__} {self.dn}>"
 
-    def __iter__(self):
-        for k, v in self.get_all_ldap_attributes():
-            yield k, v
-
-    def __dict__(self):
-        return dict(self)
-
     async def _create_new(self):
         self._entry["objectClass"] = self.object_class
         async with self.client.connect(is_async=True) as conn:
@@ -87,10 +73,10 @@ class Entry(object):
     async def _get(self):
         async with self.client.connect(is_async=True) as conn:
             # This returns a list of dicts. It should always contain only one item:
-            # the one we are interested.
+            # the one we are interested in.
             _res = await conn.search(self.dn, 0)
             if len(_res) == 0:
-                raise PhiEntryDoesNotExist()
+                raise PhiEntryDoesNotExist(self.dn)
             elif len(_res) > 1:
                 raise PhiUnexpectedRuntimeValue(
                     "return value should be no more than one", res
@@ -105,10 +91,15 @@ class Entry(object):
 
     async def _delete(self):
         async with self.client.connect(is_async=True) as conn:
-            await conn.delete(self.dn)
+            await conn.delete(self.dn, recursive=self.delete_cascade)
 
     async def describe(self):
-        return dict(await self._get())
+        _internal = await self._get()
+        values = dict((k, de_listify(_internal[k])) for k in self.ldap_attributes)
+        if "userPassword" in self.ldap_attributes:
+            values.pop("userPassword")
+        values["dn"] = self.dn
+        return values
 
     @property
     def delete_cascade(self):
@@ -140,7 +131,10 @@ class OrganizationalUnit(object):
         self.children = build_heritage(self, self.child_class, self.child_class.id_tag)
         self._entry = LDAPEntry(self.dn)
         for k, v in kwargs.items():
+            if k in self.ldap_attributes:
                 self._entry[k] = v
+        if "delete_cascade" in kwargs:
+            self.delete_cascade = delete_cascade
 
     def __aiter__(self):
         return self
@@ -164,12 +158,21 @@ class OrganizationalUnit(object):
         return f"ou={self.ou},{self.base_dn}"
 
     async def save(self):
+        """
+        This function iterates over the OU's children and invokes its `save` method,
+        ignoring errors from yet existing ones.
+        """
+        async for child in self:
             try:
-            await self._create_new()
+                await child.save()
-        except bonsai.errors.AlreadyExists:
+            except PhiEntryExists:
-            raise PhiEntryExists(self.dn)
+                pass
 
     async def search(self, member_name):
+        """
+        This function allows one to search through the OU's children. The search
+        function is the one from the underlying library (bonsai) and is strict as such.
+        """
         result = None
         async with self.client.connect(is_async=True) as conn:
             result = await conn.search(
@@ -226,9 +229,31 @@ class Member(object):
     It provides the methods to interact with the LDAP db.
     To properly use, `ou`, `object_class` and `ldap_attributes` class attributes must
     be specified when inheriting.
+
+    ## Usage
+
+    The initialization needs an `phi.async_ldap.AsyncClient` and a `name`, that is used
+    as value in the identification attribute (i.e. `uid`).
+    This inits an object in memory that may or may not exist in the ldap database yet.
+    To test it, one can invoke the async method `exists` or may try to `sync`, handling
+    the corresponding exception (`PhiEntryDoesNotExist`).
+    To save a new instance, one can `save`. The instance accepts dict-like get and set
+    on the aforementioned `ldap_attributes`. Once an attribute value has been modified,
+    one can invoke `modify` to persist the changes.
+    To remove an instance from the database, one can invoke `delete`.
+
+    ## Comparisons
+
+    The comparison operation with a `Member` is quite loose: it returns `True` with
+    either:
+      - an instance of the same `type` (i.e. the same class whose this mixin is used
+        into) whose `dn` matches
+      - an `LDAPEntry` whose `dn` matches
+      - a string matching the `dn`
     """
 
     def __init__(self, client, name, **kwargs):
+        super().__init__()
         self.client = client
         self.base_dn = client.base_dn
         self.name = name
@@ -244,7 +269,7 @@ class Member(object):
         elif isinstance(other, str):
             return other == self.dn
         elif isinstance(other, LDAPEntry):
-            return str(other) == self.dn
+            return other["dn"] == self.dn
         else:
             return False
 
@@ -255,30 +280,61 @@ class Member(object):
     def __setitem__(self, attr, val):
         if attr not in self.ldap_attributes:
             raise PhiCannotExecute(
-                f"{attr} is not an allowed ldap_attribute: {self.ldap_attributes}"
+                f"{attr} is not an allowed ldap attribute: {self.ldap_attributes}"
             )
         self._entry[attr] = val
 
     def __getitem__(self, attr):
         if attr not in self.ldap_attributes:
             raise PhiCannotExecute(
-                f"{attr} is not an allowed ldap_attribute: {self.ldap_attributes}"
+                f"{attr} is not an allowed ldap attribute: {self.ldap_attributes}"
             )
         return self._entry[attr][0]
 
     async def save(self):
+        """
+        This method persists on the ldap database an inited instance. Raises
+        `PhiEntryExists` in case of a yet existing instance. Raises a specific error if
+        the instance misses any of the needed attributes (accoding to
+        `ldap_attributes`).
+        """
         try:
             await self._create_new()
         except bonsai.errors.AlreadyExists:
             raise PhiEntryExists(self.dn)
 
     async def modify(self):
+        """
+        This method saves the changes made to the instance on the ldap database. Raises
+        `PhiEntryDoesNotExist` in case of an instance not yet persisted.
+        """
         await self._modify()
 
     async def delete(self):
+        """
+        This method removes the instance from the database. Raises
+        `PhiEntryDoesNotExist` in case the entry does not exist.
+        """
         await self._delete()
 
     async def sync(self):
+        """
+        This method reads the `ldap_attributes` of an existing instance from the ldap
+        database and assigns the values to `self`. It is needed at first instantiation
+        of the object, in case an instance exists on the database.
+        """
         res = await self._get()
         _hydrate(self, res)
         return self
+
+    async def exists(self):
+        """
+        This method returns `True` if the instance exists on the ldap database, `False`
+        if it does not. It might raise `PhiUnexpectedRuntimeValue` if the ldap state is
+        inconsistent.
+        """
+        try:
+            _ = await self.sync()
+            return True
+        except PhiEntryDoesNotExist:
+            return False

src/phi/async_ldap/new_model.py

@@ -6,7 +6,22 @@ from multidict import MultiDict
 from phi.async_ldap import mixins
 
 
-class User(mixins.Singleton, mixins.Entry, mixins.Member):
+def parse_dn(dn):
+    return MultiDict(e.split("=") for e in dn.split(","))
+
+
+def get_dn(obj):
+    if isinstance(obj, mixins.Entry):
+        return obj.dn
+    elif isinstance(obj, LDAPEntry):
+        return obj["dn"]
+    elif isinstance(obj, str):
+        return obj
+    else:
+        raise ValueError(f"Unacceptable input: {obj}")
+
+
+class User(mixins.Member, mixins.Entry, mixins.Singleton):
     object_class = [
         "inetOrgPerson",
         "simpleSecurityObject",
@@ -19,61 +34,104 @@ class User(mixins.Singleton, mixins.Entry, mixins.Member):
     ou = "Hackers"
     ldap_attributes = ["uid", "ou", "cn", "sn", "mail", "userPassword"]
 
+    async def iter_groups(self):  # To be monkeypatched later
+        pass  # pragma: no cover
 
-class Hackers(mixins.Singleton, mixins.Entry, mixins.OrganizationalUnit):
+    async def groups(self):
+        return [g async for g in self.iter_groups()]
+
+    async def delete(self):
+        async for group in self.iter_groups():
+            await group.remove_member(self)
+        await super().delete()
+
+
+class Hackers(mixins.OrganizationalUnit, mixins.Entry, mixins.Singleton):
     _instances = dict()  # type: ignore
     ou = "Hackers"
     child_class = User
 
 
-class Service(mixins.Singleton, mixins.Entry, mixins.Member):
+class Service(mixins.Member, mixins.Entry, mixins.Singleton):
     object_class = ["simpleSecurityObject", "account", "top"]
     _instances = dict()  # type: ignore
     id_tag = "uid"
     ou = "Robots"
     ldap_attributes = ["uid", "ou", "userPassword"]
 
+    async def iter_groups(self):  # To be monkeypatched later
+        pass  # pragma: no cover
 
-class Robots(mixins.Singleton, mixins.Entry, mixins.OrganizationalUnit):
+    async def groups(self):
+        return [g async for g in self.iter_groups()]
+
+    async def delete(self):
+        async for group in self.iter_groups():
+            await group.remove_member(self)
+        await super().delete()
+
+
+class Robots(mixins.OrganizationalUnit, mixins.Entry, mixins.Singleton):
     _instances = dict()  # type: ignore
     ou = "Robots"
     child_class = Service
 
 
-class Group(mixins.Singleton, mixins.Entry, mixins.Member):
+class Group(mixins.Member, mixins.Entry, mixins.Singleton):
     object_class = ["groupOfNames", "top"]
     _instances = dict()  # type: ignore
     id_tag = "cn"
     ou = "Congregations"
     ldap_attributes = ["cn", "ou", "member"]
     memeber_classes = {"Hackers": User, "Robots": Service}
+    empty = False
 
     async def add_member(self, member):
-        self._entry["member"].append(get_dn(member))
+        member_dn = get_dn(member)
+        self._entry["member"].append(member_dn)
         await self.modify()
 
     async def remove_member(self, member):
-        self._entry["member"] = [get_dn(m) for m in self.get_members() if member != m]
+        new_group_members = [get_dn(m) async for m in self.get_members() if member != m]
+        if len(new_group_members) == 0:
+            await self.delete()
+            self.empty = True
+        else:
+            self._entry["member"] = new_group_members
             await self.modify()
 
-    def get_members(self):
+    async def get_members(self):
+        await self.sync()
         for member in self._entry.get("member", []):
-            dn = MultiDict(e.split("=") for e in member.split(","))
+            dn = parse_dn(member)
             yield self.memeber_classes.get(dn["ou"])(self.client, dn["uid"])
 
 
-class Congregations(mixins.Singleton, mixins.Entry, mixins.OrganizationalUnit):
+class Congregations(mixins.OrganizationalUnit, mixins.Entry, mixins.Singleton):
     _instances = dict()  # type: ignore
     ou = "Congregations"
     child_class = Group
 
 
-def get_dn(obj):
+# We define this async method here **after** `User`, `Service` and `Group` have been
-    if isinstance(obj, mixins.Entry):
+# defined, in order to avoid definition loops that would prevent the code from running.
-        return obj.dn
+# Indeed, this function explicitely uses `Group` but is needed as a `User` and `Service`
-    elif isinstance(obj, LDAPEntry):
+# method. In turn, `Group` definition relies on both `User` and `Service` being yet
-        return obj["dn"]
+# defined.
-    elif isinstance(obj, str):
+async def iter_groups(self):
-        return obj
+    async with self.client.connect(is_async=True) as conn:
+        res = await conn.search(f"{self.dn}", 2, attrlist=["memberOf"])
+        if not res or len(res) == 0:
+            return
+        elif len(res) == 1:
+            for group in res[0].get("memberOf", []):
+                yield Group(self.client, parse_dn(get_dn(group))["cn"])
         else:
-        raise ValueError(f"Unacceptable input: {obj}")
+            raise PhiUnexpectedRuntimeValue(
+                "return value should be no more than one", res
+            )
+
+
+# Monkeypatch
+User.iter_groups = iter_groups  # type: ignore
+Service.iter_groups = iter_groups  # type: ignore