feat(init) checking that core shared dictionaries exist

CHANGELOG.md

@@ -32,9 +32,11 @@
   [Amir M. Saeid](https://github.com/amir) for the contribution.
   [#2430](https://github.com/Mashape/kong/pull/2430)
 - Logging retries and failure information.
-  [#2429](https://github.com/Mashape/kong/pull/2429).
+  [#2429](https://github.com/Mashape/kong/pull/2429)
 - Serf commands are now logged with a `DEBUG` log level.
   [#2410](https://github.com/Mashape/kong/pull/2410)
+- Checking that core Lua shared dictionaries are declared in the configuration.
+  [#2466](https://github.com/Mashape/kong/pull/2466)
 - Plugins:
   - :fireworks: **New Request termination plugin**. This plugin allows to
     temporarily disable an API and return a pre-configured response status and

kong/kong.lua

@@ -120,7 +120,16 @@ end
 
 local Kong = {}
 
+local DICTS = { "kong", "cache", "cache_locks", "process_events", "cassandra"}
+
 function Kong.init()
+  -- Check shared dictionaries
+  for _, dict in ipairs(DICTS) do
+    if not ngx.shared[dict] then
+      error("cannot find shared dictionary: "..dict)
+    end
+  end
+
   local pl_path = require "pl.path"
   local conf_loader = require "kong.conf_loader"