Allow setting redis options

README.md

@@ -500,6 +500,8 @@ In order to prevent getting the RedisMutex::LockError error when having a large
 # config/initializers/gush.rb
 Gush.configure do |config|
   config.redis_url = "redis://localhost:6379"
+  # NB: you can also pass redis options as a hash:
+  # config.redis = { host: "localhost", port: 6379, db: 1 }
   config.concurrency = 5
   config.locking_duration = 2 # how long you want to wait for the lock to be released, in seconds
   config.polling_interval = 0.3 # how long the polling interval should be, in seconds
@@ -516,6 +518,8 @@ Running `NotifyWorkflow.create` inserts multiple keys into Redis every time it i
 # config/initializers/gush.rb
 Gush.configure do |config|
   config.redis_url = "redis://localhost:6379"
+  # NB: you can also pass redis options as a hash:
+  # config.redis = { host: "localhost", port: 6379, db: 1 }
   config.concurrency = 5
   config.ttl = 3600*24*7
 end

lib/gush/client.rb

@@ -8,12 +8,12 @@ class Client
     @@redis_connection = Concurrent::ThreadLocalVar.new(nil)
 
     def self.redis_connection(config)
-      cached = (@@redis_connection.value ||= { url: config.redis_url, connection: nil })
-      return cached[:connection] if !cached[:connection].nil? && config.redis_url == cached[:url]
+      cached = (@@redis_connection.value ||= config.redis.merge(connection: nil))
+      return cached[:connection] if !cached[:connection].nil? && config.redis == cached.except(:connection)
 
-      Redis.new(url: config.redis_url).tap do |instance|
+      Redis.new(config.redis).tap do |instance|
         RedisClassy.redis = instance
-        @@redis_connection.value = { url: config.redis_url, connection: instance }
+        @@redis_connection.value = config.redis.merge(connection: instance)
       end
     end
 

lib/gush/configuration.rb

@@ -1,15 +1,17 @@
 module Gush
   class Configuration
-    attr_accessor :concurrency, :namespace, :redis_url, :ttl, :locking_duration, :polling_interval
+    attr_accessor :concurrency, :namespace, :redis, :ttl, :locking_duration, :polling_interval
 
     def self.from_json(json)
       new(Gush::JSON.decode(json, symbolize_keys: true))
     end
 
     def initialize(hash = {})
+      raise ArgumentError, "You can't set both redis_url and redis" if hash.key?(:redis_url) && hash.key?(:redis)
+
       self.concurrency      = hash.fetch(:concurrency, 5)
       self.namespace        = hash.fetch(:namespace, 'gush')
-      self.redis_url        = hash.fetch(:redis_url, 'redis://localhost:6379')
+      self.redis            = hash.key?(:redis) ? hash.fetch(:redis) : { url: hash.fetch(:redis_url, 'redis://localhost:6379') }
       self.gushfile         = hash.fetch(:gushfile, 'Gushfile')
       self.ttl              = hash.fetch(:ttl, -1)
       self.locking_duration = hash.fetch(:locking_duration, 2) # how long you want to wait for the lock to be released, in seconds
@@ -24,11 +26,20 @@ def gushfile
       @gushfile.realpath if @gushfile.exist?
     end
 
+    def redis_url=(url)
+      redis[:url] = url
+    end
+
+    def redis_url
+      redis[:url]
+    end
+
     def to_hash
       {
         concurrency:      concurrency,
         namespace:        namespace,
         redis_url:        redis_url,
+        redis:            redis,
         ttl:              ttl,
         locking_duration: locking_duration,
         polling_interval: polling_interval

spec/gush/configuration_spec.rb

@@ -22,6 +22,22 @@
       end
 
       expect(Gush.configuration.redis_url).to eq("redis://localhost")
+      expect(Gush.configuration.redis).to eq({ url: "redis://localhost" })
+      expect(Gush.configuration.concurrency).to eq(25)
+      expect(Gush.configuration.locking_duration).to eq(5)
+      expect(Gush.configuration.polling_interval).to eq(0.5)
+    end
+
+    it "allows setting redis opptions" do
+      Gush.configure do |config|
+        config.redis = { host: "localhost", port: 6379, db: 1 }
+        config.concurrency = 25
+        config.locking_duration = 5
+        config.polling_interval = 0.5
+      end
+
+      expect(Gush.configuration.redis).to eq({ host: "localhost", port: 6379, db: 1 })
+      expect(Gush.configuration.redis_url).to eq(nil)
       expect(Gush.configuration.concurrency).to eq(25)
       expect(Gush.configuration.locking_duration).to eq(5)
       expect(Gush.configuration.polling_interval).to eq(0.5)