add REDIS_SSL_CERT_REQS cli parameter (#1495)

* add REDIS_SSL_CERT_REQS cli parameter

* update docs

Co-authored-by: dan <dan@betterfin.com>

docs/patterns/index.md

@@ -3,7 +3,6 @@ title: "RQ: Using RQ on Heroku"
 layout: patterns
 ---
 
-
 ## Using RQ on Heroku
 
 To setup RQ on [Heroku][1], first add it to your
@@ -48,14 +47,41 @@ Now, all you have to do is spin up a worker:
 $ heroku scale worker=1
 {% endhighlight %}
 
+If you are using [Heroku Redis][5]) you might need to change the Redis connection as follows:
+
+{% highlight console %}
+conn = redis.Redis(
+    host=host,
+    password=password,
+    port=port,
+    ssl=True,
+    ssl_cert_reqs=None
+)
+{% endhighlight %}
+
+and for using the cli:
+
+{% highlight console %}
+rq info --config rq_conf
+{% endhighlight %}{% endhighlight %}
+
+Where the rq_conf.py file looks like:
+{% highlight console %}
+REDIS_HOST = "host"
+REDIS_PORT = port
+REDIS_PASSWORD = "password"
+REDIS_SSL = True
+REDIS_SSL_CA_CERTS = None
+REDIS_DB = 0
+REDIS_SSL_CERT_REQS = None
+{% endhighlight %}{% endhighlight %}
 
 ## Putting RQ under foreman
 
 [Foreman][3] is probably the process manager you use when you host your app on
 Heroku, or just because it's a pretty friendly tool to use in development.
 
-When using RQ under `foreman`, you may experience that the workers are a bit
+When using RQ under `foreman`, you may experience that the workers are a bit quiet sometimes. This is because of Python buffering the output, so `foreman`
-quiet sometimes.  This is because of Python buffering the output, so `foreman`
 cannot (yet) echo it. Here's a related [Wiki page][4].
 
 Just change the way you run your worker process, by adding the `-u` option (to
@@ -67,3 +93,4 @@ force stdin, stdout and stderr to be totally unbuffered):
 [2]: https://devcenter.heroku.com/articles/redistogo
 [3]: https://github.com/ddollar/foreman
 [4]: https://github.com/ddollar/foreman/wiki/Missing-Output
+[5]: https://elements.heroku.com/addons/heroku-redis

rq/cli/helpers.py

@@ -71,6 +71,7 @@ def get_redis_from_config(settings, connection_class=Redis):
         'password': settings.get('REDIS_PASSWORD', None),
         'ssl': ssl,
         'ssl_ca_certs': settings.get('REDIS_SSL_CA_CERTS', None),
+        'ssl_cert_reqs': settings.get('REDIS_SSL_CERT_REQS', 'required'),
     }
 
     return connection_class(**kwargs)