Merge pull request #56 from lpgauth/feature/delete-cache

Expose function to clear marina_cache using the RequestId

src/marina_cache.erl

@@ -3,6 +3,7 @@
 
 -export([
     erase/2,
+    erase_server/1,
     get/2,
     init/0,
     put/3
@@ -20,6 +21,14 @@ erase(Pool, Key) ->
             {error, not_found}
     end.
 
+
+-spec erase_server(shackle:request_id()) -> ok.
+
+erase_server({ServerName, _}) ->
+    Pool = marina_utils:server_to_pool(ServerName),
+    ets:select_delete(?ETS_TABLE_CACHE, [{{{'$1', '$2'}, '_'}, [], [{'==', '$1', Pool}]}]),
+    ok.
+
 -spec get(atom(), binary()) -> {ok, term()} | {error, not_found}.
 
 get(Pool, Key) ->

src/marina_utils.erl

@@ -8,8 +8,9 @@
     pack/1,
     query/2,
     query_opts/2,
-    sync_msg/2,
+    server_to_pool/1,
     startup/1,
+    sync_msg/2,
     timeout/2,
     unpack/1,
     use_keyspace/1
@@ -88,6 +89,14 @@ query_opts(timeout, QueryOpts) ->
 query_opts(values, QueryOpts) ->
     maps:get(values, QueryOpts, undefined).
 
+-spec server_to_pool(atom()) -> atom().
+
+server_to_pool(Node) ->
+    NodeSplit = binary:split(erlang:atom_to_binary(Node), <<"_">>, [global]),
+    PoolSplit = lists:sublist(NodeSplit, length(NodeSplit) - 1),
+    PoolBin = erlang:iolist_to_binary(lists:join(<<"_">>, PoolSplit)),
+    erlang:binary_to_atom(PoolBin).
+
 -spec sync_msg(inet:socket(), iodata()) ->
     {ok, term()} | {error, term()}.