/
mcache.erl
57 lines (44 loc) · 1.69 KB
/
mcache.erl
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%
% wraps memcached_drv
%
-module(mcache).
-author('echou327@gmail.com').
-export([start/0, get/2, get_raw/2, mget/2, set/5, delete/2]).
-define(DICT, dict).
start() ->
application:start(mcache).
get(Class, Key) ->
Get = fun() ->
{Pool, _Expiry} = mcache_expires:expire(Class),
io:format("~p~n", [{Pool, _Expiry}]),
{mc_async, 0, {ok, Value}} = memcached_drv:get(Pool, 0, mcache_util:map_key(Class, Key)),
mcache_util:decode_value(Value)
end,
catch Get().
get_raw(Class, Key) ->
{Pool, _Expiry} = mcache_expires:expire(Class),
{mc_async, 0, {ok, Value}} = memcached_drv:get(Pool, 0, mcache_util:map_key(Class, Key)),
Value.
mget(Class, [_|_]=Keys) ->
{Pool, _Expiry} = mcache_expires:expire(Class),
RealKeys = lists:map(fun(K) ->
mcache_util:map_key(Class, K)
end, Keys),
{mc_async, 0, {ok, Values}} = memcached_drv:mget(Pool, 0, RealKeys),
mget_zip(Keys, Values, []).
set(Class, Key, Value, Format, Expiry) ->
{Pool, DefaultExpiry} = mcache_expires:expire(Class),
{Value1, Flags} = mcache_util:encode_value(Value, Format),
Expiry1 = mcache_util:encode_expiry(Expiry, DefaultExpiry),
memcached_drv:set(Pool, 0, set, mcache_util:map_key(Class, Key), Value1, Flags, Expiry1),
ok.
delete(Class, Key) ->
{Pool, _} = mcache_expires:expire(Class),
memcached_drv:delete(Pool, 0, mcache_util:map_key(Class, Key)),
ok.
mget_zip([], [], L) ->
lists:reverse(L);
mget_zip([_K|KL], [undefined|VL], L) ->
mget_zip(KL, VL, L);
mget_zip([K|KL], [{Val, Flags}|VL], L) ->
mget_zip(KL, VL, [{K, mcache_util:decode_value({Val, Flags})}|L]).