Merge pull request #680 from RealFatCat/feat/connection-factory-in-cache-options

Connection factory goes to cache options

Author: WisdomPill

README.rst

@@ -736,6 +736,35 @@ In order to enable this functionality you should add the following:
         },
     }
 
+It is also possible to set some caches as sentinels and some as not:
+
+.. code-block:: python
+
+    SENTINELS = [
+        ('sentinel-1', 26379),
+        ('sentinel-2', 26379),
+        ('sentinel-3', 26379),
+    ]
+    CACHES = {
+        "sentinel": {
+            "BACKEND": "django_redis.cache.RedisCache",
+            "LOCATION": "redis://service_name/db",
+            "OPTIONS": {
+                "CLIENT_CLASS": "django_redis.client.SentinelClient",
+                "SENTINELS": SENTINELS,
+                "CONNECTION_POOL_CLASS": "redis.sentinel.SentinelConnectionPool",
+                "CONNECTION_FACTORY": "django_redis.pool.SentinelConnectionFactory",
+            },
+        },
+        "default": {
+            "BACKEND": "django_redis.cache.RedisCache",
+            "LOCATION": "redis://127.0.0.1:6379/1",
+            "OPTIONS": {
+                "CLIENT_CLASS": "django_redis.client.DefaultClient",
+            },
+        },
+    }
+
 .. _Redis Sentinels: https://redis.io/topics/sentinel
 
 Pluggable parsers

changelog.d/680.feature

@@ -0,0 +1 @@
+Connection factory goes to cache options

django_redis/pool.py

@@ -184,6 +184,9 @@ def get_connection_factory(path=None, options=None):
             "DJANGO_REDIS_CONNECTION_FACTORY",
             "django_redis.pool.ConnectionFactory",
         )
+    opt_conn_factory = options.get("CONNECTION_FACTORY")
+    if opt_conn_factory:
+        path = opt_conn_factory
 
     cls = import_string(path)
     return cls(options or {})

setup.cfg

@@ -107,6 +107,7 @@ commands =
   {envpython} -m pytest --cov-append --cov-report= --ds=settings.sqlite_lz4 {posargs}
   {envpython} -m pytest --cov-append --cov-report= --ds=settings.sqlite_msgpack {posargs}
   {envpython} -m pytest --cov-append --cov-report= --ds=settings.sqlite_sentinel {posargs}
+  {envpython} -m pytest --cov-append --cov-report= --ds=settings.sqlite_sentinel_opts {posargs}
   {envpython} -m pytest --cov-append --cov-report= --ds=settings.sqlite_sharding {posargs}
   {envpython} -m pytest --cov-append --cov-report= --ds=settings.sqlite_usock {posargs}
   {envpython} -m pytest --cov-append --cov-report= --ds=settings.sqlite_zlib {posargs}

tests/settings/sqlite_sentinel_opts.py

@@ -0,0 +1,49 @@
+SECRET_KEY = "django_tests_secret_key"
+
+SENTINELS = [("127.0.0.1", 26379)]
+
+conn_factory = "django_redis.pool.SentinelConnectionFactory"
+
+CACHES = {
+    "default": {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": ["redis://default_service?db=5"],
+        "OPTIONS": {
+            "CLIENT_CLASS": "django_redis.client.DefaultClient",
+            "SENTINELS": SENTINELS,
+            "CONNECTION_FACTORY": conn_factory,
+        },
+    },
+    "doesnotexist": {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": "redis://missing_service?db=1",
+        "OPTIONS": {
+            "CLIENT_CLASS": "django_redis.client.DefaultClient",
+            "SENTINELS": SENTINELS,
+            "CONNECTION_FACTORY": conn_factory,
+        },
+    },
+    "sample": {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": "redis://default_service?db=1",
+        "OPTIONS": {
+            "CLIENT_CLASS": "django_redis.client.SentinelClient",
+            "SENTINELS": SENTINELS,
+            "CONNECTION_FACTORY": conn_factory,
+        },
+    },
+    "with_prefix": {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": "redis://default_service?db=1",
+        "KEY_PREFIX": "test-prefix",
+        "OPTIONS": {
+            "CLIENT_CLASS": "django_redis.client.DefaultClient",
+            "SENTINELS": SENTINELS,
+            "CONNECTION_FACTORY": conn_factory,
+        },
+    },
+}
+
+INSTALLED_APPS = ["django.contrib.sessions"]
+
+USE_TZ = False

tests/test_connection_factory.py

@@ -0,0 +1,60 @@
+import pytest
+from django.core.exceptions import ImproperlyConfigured
+
+from django_redis import pool
+
+
+def test_connection_factory_redefine_from_opts():
+    cf = pool.get_connection_factory(
+        path="django_redis.pool.ConnectionFactory",
+        options={
+            "CONNECTION_FACTORY": "django_redis.pool.SentinelConnectionFactory",
+            "SENTINELS": [("127.0.0.1", "26739")],
+        },
+    )
+    assert cf.__class__.__name__ == "SentinelConnectionFactory"
+
+
+@pytest.mark.parametrize(
+    "conn_factory,expected",
+    [
+        ("django_redis.pool.SentinelConnectionFactory", pool.SentinelConnectionFactory),
+        ("django_redis.pool.ConnectionFactory", pool.ConnectionFactory),
+    ],
+)
+def test_connection_factory_opts(conn_factory: str, expected):
+    cf = pool.get_connection_factory(
+        path=None,
+        options={
+            "CONNECTION_FACTORY": conn_factory,
+            "SENTINELS": [("127.0.0.1", "26739")],
+        },
+    )
+    assert isinstance(cf, expected)
+
+
+@pytest.mark.parametrize(
+    "conn_factory,expected",
+    [
+        ("django_redis.pool.SentinelConnectionFactory", pool.SentinelConnectionFactory),
+        ("django_redis.pool.ConnectionFactory", pool.ConnectionFactory),
+    ],
+)
+def test_connection_factory_path(conn_factory: str, expected):
+    cf = pool.get_connection_factory(
+        path=conn_factory,
+        options={
+            "SENTINELS": [("127.0.0.1", "26739")],
+        },
+    )
+    assert isinstance(cf, expected)
+
+
+def test_connection_factory_no_sentinels():
+    with pytest.raises(ImproperlyConfigured):
+        pool.get_connection_factory(
+            path=None,
+            options={
+                "CONNECTION_FACTORY": "django_redis.pool.SentinelConnectionFactory",
+            },
+        )