Fixes bug where Memcached connections get corrupted when an invalid expire is passed in [#2854 state:resolved]

1 files changed, 11 insertions, 2 deletions

diff --git a/activesupport/lib/active_support/cache.rb b/activesupport/lib/active_support/cache.rb
index 3c422e0252..448db538ab 100644
--- a/activesupport/lib/active_support/cache.rb
+++ b/activesupport/lib/active_support/cache.rb
@@ -99,11 +99,16 @@ module ActiveSupport
     class Store
       cattr_accessor :logger
 
+      attr_reader :silence, :logger_off
+
       def silence!
         @silence = true
         self
       end
 
+      alias silence? silence
+      alias logger_off? logger_off
+
       # Fetches data from the cache, using the given key. If there is data in
       # the cache with the given key, then that data is returned.
       #
@@ -233,11 +238,15 @@ module ActiveSupport
 
       private
         def expires_in(options)
-          (options && options[:expires_in]) || 0
+          expires_in = options && options[:expires_in]
+
+          raise ":expires_in must be a number" if expires_in && !expires_in.is_a?(Numeric)
+
+          expires_in || 0
         end
 
         def log(operation, key, options)
-          logger.debug("Cache #{operation}: #{key}#{options ? " (#{options.inspect})" : ""}") if logger && !@silence && !@logger_off
+          logger.debug("Cache #{operation}: #{key}#{options ? " (#{options.inspect})" : ""}") if logger && !silence? && !logger_off?
         end
     end
   end