backend_subscription
This commit is contained in:
parent
0f1347a495
commit
f1f58818d5
|
@ -25,15 +25,15 @@
|
|||
-copy_mnesia({mnesia, [copy]}).
|
||||
|
||||
%% API.
|
||||
-export([add_static_subscription/1, lookup_static_subscriptions/1,
|
||||
del_static_subscriptions/1, del_static_subscription/2]).
|
||||
-export([add_subscription/1, lookup_subscriptions/1, del_subscriptions/1,
|
||||
del_subscription/2]).
|
||||
|
||||
%%--------------------------------------------------------------------
|
||||
%% Mnesia callbacks
|
||||
%%--------------------------------------------------------------------
|
||||
|
||||
mnesia(boot) ->
|
||||
ok = emqttd_mnesia:create_table(static_subscription, [
|
||||
ok = emqttd_mnesia:create_table(backend_subscription, [
|
||||
{type, bag},
|
||||
{disc_copies, [node()]},
|
||||
{record_name, mqtt_subscription},
|
||||
|
@ -42,48 +42,48 @@ mnesia(boot) ->
|
|||
{dets, [{auto_save, 5000}]}]}]);
|
||||
|
||||
mnesia(copy) ->
|
||||
ok = emqttd_mnesia:copy_table(static_subscription).
|
||||
ok = emqttd_mnesia:copy_table(backend_subscription).
|
||||
|
||||
%%--------------------------------------------------------------------
|
||||
%% Static Subscriptions
|
||||
%%--------------------------------------------------------------------
|
||||
|
||||
%% @doc Add a static subscription manually.
|
||||
-spec add_static_subscription(mqtt_subscription()) -> {atom, ok}.
|
||||
add_static_subscription(Subscription = #mqtt_subscription{subid = SubId, topic = Topic}) ->
|
||||
-spec add_subscription(mqtt_subscription()) -> {atom, ok}.
|
||||
add_subscription(Subscription = #mqtt_subscription{subid = SubId, topic = Topic}) ->
|
||||
Pattern = match_pattern(SubId, Topic),
|
||||
mnesia:transaction(
|
||||
fun() ->
|
||||
case mnesia:match_object(static_subscription, Pattern, write) of
|
||||
case mnesia:match_object(backend_subscription, Pattern, write) of
|
||||
[] ->
|
||||
mnesia:write(static_subscription, Subscription, write);
|
||||
mnesia:write(backend_subscription, Subscription, write);
|
||||
[Subscription] ->
|
||||
mnesia:abort({error, existed});
|
||||
[Subscription1] -> %% QoS is different
|
||||
mnesia:delete_object(static_subscription, Subscription1, write),
|
||||
mnesia:write(static_subscription, Subscription, write)
|
||||
mnesia:delete_object(backend_subscription, Subscription1, write),
|
||||
mnesia:write(backend_subscription, Subscription, write)
|
||||
end
|
||||
end).
|
||||
|
||||
%% @doc Lookup static subscriptions.
|
||||
-spec lookup_static_subscriptions(binary()) -> list(mqtt_subscription()).
|
||||
lookup_static_subscriptions(ClientId) when is_binary(ClientId) ->
|
||||
mnesia:dirty_read(static_subscription, ClientId).
|
||||
-spec lookup_subscriptions(binary()) -> list(mqtt_subscription()).
|
||||
lookup_subscriptions(ClientId) when is_binary(ClientId) ->
|
||||
mnesia:dirty_read(backend_subscription, ClientId).
|
||||
|
||||
%% @doc Delete static subscriptions by ClientId manually.
|
||||
-spec del_static_subscriptions(binary()) -> ok.
|
||||
del_static_subscriptions(ClientId) when is_binary(ClientId) ->
|
||||
mnesia:transaction(fun mnesia:delete/1, [{static_subscription, ClientId}]).
|
||||
-spec del_subscriptions(binary()) -> ok.
|
||||
del_subscriptions(ClientId) when is_binary(ClientId) ->
|
||||
mnesia:transaction(fun mnesia:delete/1, [{backend_subscription, ClientId}]).
|
||||
|
||||
%% @doc Delete a static subscription manually.
|
||||
-spec del_static_subscription(binary(), binary()) -> ok.
|
||||
del_static_subscription(ClientId, Topic) when is_binary(ClientId) andalso is_binary(Topic) ->
|
||||
mnesia:transaction(fun del_static_subscription_/1, [match_pattern(ClientId, Topic)]).
|
||||
-spec del_subscription(binary(), binary()) -> ok.
|
||||
del_subscription(ClientId, Topic) when is_binary(ClientId) andalso is_binary(Topic) ->
|
||||
mnesia:transaction(fun del_subscription_/1, [match_pattern(ClientId, Topic)]).
|
||||
|
||||
del_static_subscription_(Pattern) ->
|
||||
del_subscription_(Pattern) ->
|
||||
lists:foreach(fun(Subscription) ->
|
||||
mnesia:delete_object(static_subscription, Subscription, write)
|
||||
end, mnesia:match_object(static_subscription, Pattern, write)).
|
||||
mnesia:delete_object(backend_subscription, Subscription, write)
|
||||
end, mnesia:match_object(backend_subscription, Pattern, write)).
|
||||
|
||||
match_pattern(SubId, Topic) ->
|
||||
#mqtt_subscription{subid = SubId, topic = Topic, qos = '_'}.
|
||||
|
|
|
@ -228,7 +228,7 @@ subscriptions(["list"]) ->
|
|||
|
||||
subscriptions(["list", "static"]) ->
|
||||
Print = fun(ClientId, Records) -> print(subscription, ClientId, Records) end,
|
||||
if_could_print(static_subscription, Print);
|
||||
if_could_print(backend_subscription, Print);
|
||||
|
||||
subscriptions(["show", ClientId]) ->
|
||||
case mnesia:dirty_read(subscription, bin(ClientId)) of
|
||||
|
@ -241,7 +241,7 @@ subscriptions(["add", ClientId, Topic, QoS]) ->
|
|||
Subscription = #mqtt_subscription{subid = bin(ClientId),
|
||||
topic = bin(Topic),
|
||||
qos = IntQos},
|
||||
case emqttd_backend:add_static_subscription(Subscription) of
|
||||
case emqttd_backend:add_subscription(Subscription) of
|
||||
{atomic, ok} ->
|
||||
?PRINT_MSG("ok~n");
|
||||
{aborted, {error, existed}} ->
|
||||
|
@ -253,11 +253,11 @@ subscriptions(["add", ClientId, Topic, QoS]) ->
|
|||
if_valid_qos(QoS, Add);
|
||||
|
||||
subscriptions(["del", ClientId]) ->
|
||||
Ok = emqttd_backend:del_static_subscriptions(bin(ClientId)),
|
||||
Ok = emqttd_backend:del_subscriptions(bin(ClientId)),
|
||||
?PRINT("~p~n", [Ok]);
|
||||
|
||||
subscriptions(["del", ClientId, Topic]) ->
|
||||
Ok = emqttd_backend:del_static_subscription(bin(ClientId), bin(Topic)),
|
||||
Ok = emqttd_backend:del_subscription(bin(ClientId), bin(Topic)),
|
||||
?PRINT("~p~n", [Ok]);
|
||||
|
||||
subscriptions(_) ->
|
||||
|
|
|
@ -25,11 +25,11 @@
|
|||
|
||||
-export([load/1, client_connected/3, unload/1]).
|
||||
|
||||
-record(state, {topics, stored = false}).
|
||||
-record(state, {topics, backend = false}).
|
||||
|
||||
load(Opts) ->
|
||||
Topics = [{iolist_to_binary(Topic), QoS} || {Topic, QoS} <- Opts, ?IS_QOS(QoS)],
|
||||
State = #state{topics = Topics, stored = lists:member(stored, Opts)},
|
||||
State = #state{topics = Topics, backend = lists:member(backend, Opts)},
|
||||
emqttd_broker:hook('client.connected', {?MODULE, client_connected},
|
||||
{?MODULE, client_connected, [State]}),
|
||||
ok.
|
||||
|
@ -37,18 +37,18 @@ load(Opts) ->
|
|||
client_connected(?CONNACK_ACCEPT, #mqtt_client{client_id = ClientId,
|
||||
client_pid = ClientPid,
|
||||
username = Username},
|
||||
#state{topics = Topics, stored = Stored}) ->
|
||||
#state{topics = Topics, backend = Backend}) ->
|
||||
Replace = fun(Topic) -> rep(<<"$u">>, Username, rep(<<"$c">>, ClientId, Topic)) end,
|
||||
TopicTable = with_stored(Stored, ClientId, [{Replace(Topic), Qos} || {Topic, Qos} <- Topics]),
|
||||
TopicTable = [{Replace(Topic), Qos} || {Topic, Qos} <- with_backend(Backend, ClientId, Topics)],
|
||||
emqttd_client:subscribe(ClientPid, TopicTable);
|
||||
|
||||
client_connected(_ConnAck, _Client, _State) -> ok.
|
||||
|
||||
with_stored(false, _ClientId, TopicTable) ->
|
||||
with_backend(false, _ClientId, TopicTable) ->
|
||||
TopicTable;
|
||||
with_stored(true, ClientId, TopicTable) ->
|
||||
with_backend(true, ClientId, TopicTable) ->
|
||||
Fun = fun(#mqtt_subscription{topic = Topic, qos = Qos}) -> {Topic, Qos} end,
|
||||
emqttd_opts:merge([Fun(Sub) || Sub <- emqttd_pubsub:lookup(subscription, ClientId)], TopicTable).
|
||||
emqttd_opts:merge([Fun(Sub) || Sub <- emqttd_backend:lookup_subscriptions(ClientId)], TopicTable).
|
||||
|
||||
unload(_Opts) ->
|
||||
emqttd_broker:unhook('client.connected', {?MODULE, client_connected}).
|
||||
|
|
Loading…
Reference in New Issue