new session
This commit is contained in:
Feng
commit
f857f1ec19
24
CHANGELOG.md
24
CHANGELOG.md
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@ -2,6 +2,30 @@
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|||
emqttd ChangeLog
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==================
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0.9.0-alpha (2015-06-14)
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-------------------------
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Session
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Queue
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|
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Alarm
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Protocol Compliant
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0.8.5-beta (2015-06-10)
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-------------------------
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Bugfix: issue #53 - client will receive duplicate messages when overlapping subscription
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0.8.4-beta (2015-06-08)
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-------------------------
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Bugfix: issue #165 - duplicated message when publish 'retained' message to persistent client
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0.8.3-beta (2015-06-05)
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-------------------------
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@ -0,0 +1,10 @@
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# CONTRIBUTORS
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* [@callbay](https://github.com/callbay)
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* [@hejin1026](https://github.com/hejin1026)
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* [@desoulter](https://github.com/desoulter)
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* [@turtleDeng](https://github.com/turtleDeng)
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* [@Hades32](https://github.com/Hades32)
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* [@huangdan](https://github.com/huangdan)
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12
README.md
12
README.md
|
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@ -102,12 +102,12 @@ The MIT License (MIT)
|
|||
|
||||
## Contributors
|
||||
|
||||
[@hejin1026](https://github.com/hejin1026)
|
||||
[@desoulter](https://github.com/desoulter)
|
||||
[@turtleDeng](https://github.com/turtleDeng)
|
||||
[@Hades32](https://github.com/Hades32)
|
||||
[@huangdan](https://github.com/huangdan)
|
||||
[@callbay](https://github.com/callbay)
|
||||
* [@hejin1026](https://github.com/hejin1026)
|
||||
* [@desoulter](https://github.com/desoulter)
|
||||
* [@turtleDeng](https://github.com/turtleDeng)
|
||||
* [@Hades32](https://github.com/Hades32)
|
||||
* [@huangdan](https://github.com/huangdan)
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||||
* [@callbay](https://github.com/callbay)
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||||
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## Author
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||||
|
|
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|||
|
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@ -0,0 +1,98 @@
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|||
%%%-----------------------------------------------------------------------------
|
||||
%%% Copyright (c) 2012-2015 eMQTT.IO, All Rights Reserved.
|
||||
%%%
|
||||
%%% Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
%%% of this software and associated documentation files (the "Software"), to deal
|
||||
%%% in the Software without restriction, including without limitation the rights
|
||||
%%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
%%% copies of the Software, and to permit persons to whom the Software is
|
||||
%%% furnished to do so, subject to the following conditions:
|
||||
%%%
|
||||
%%% The above copyright notice and this permission notice shall be included in all
|
||||
%%% copies or substantial portions of the Software.
|
||||
%%%
|
||||
%%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
%%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
%%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
%%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
%%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
%%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
%%% SOFTWARE.
|
||||
%%%-----------------------------------------------------------------------------
|
||||
%%% @doc
|
||||
%%% copy alarm_handler.
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||||
%%%
|
||||
%%% @end
|
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%%%-----------------------------------------------------------------------------
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|
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-module(emqttd_alarm).
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-export([start_link/0, set_alarm/1, clear_alarm/1, get_alarms/0,
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add_alarm_handler/1, add_alarm_handler/2,
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delete_alarm_handler/1]).
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|
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-export([init/1, handle_event/2, handle_call/2, handle_info/2,
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terminate/2]).
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|
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-define(SERVER, ?MODULE).
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-type alarm() :: {AlarmId :: any(), AlarmDescription :: string() | binary()}.
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start_link() ->
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case gen_event:start_link({local, ?SERVER}) of
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{ok, Pid} ->
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gen_event:add_handler(?SERVER, ?MODULE, []),
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{ok, Pid};
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Error ->
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Error
|
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end.
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-spec set_alarm(alarm()) -> ok.
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set_alarm(Alarm) ->
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gen_event:notify(?SERVER, {set_alarm, Alarm}).
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-spec clear_alarm(any()) -> ok.
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clear_alarm(AlarmId) ->
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gen_event:notify(?SERVER, {clear_alarm, AlarmId}).
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get_alarms() ->
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gen_event:call(?SERVER, ?MODULE, get_alarms).
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add_alarm_handler(Module) when is_atom(Module) ->
|
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gen_event:add_handler(?SERVER, Module, []).
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|
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add_alarm_handler(Module, Args) when is_atom(Module) ->
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gen_event:add_handler(?SERVER, Module, Args).
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|
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delete_alarm_handler(Module) when is_atom(Module) ->
|
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gen_event:delete_handler(?SERVER, Module, []).
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|
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%%-----------------------------------------------------------------
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%% Default Alarm handler
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%%-----------------------------------------------------------------
|
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|
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init(_) -> {ok, []}.
|
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|
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handle_event({set_alarm, Alarm}, Alarms)->
|
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%%TODO: publish to $SYS
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{ok, [Alarm | Alarms]};
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|
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handle_event({clear_alarm, AlarmId}, Alarms)->
|
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%TODO: publish to $SYS
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{ok, lists:keydelete(AlarmId, 1, Alarms)};
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|
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handle_event(_, Alarms)->
|
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{ok, Alarms}.
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|
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handle_info(_, Alarms) -> {ok, Alarms}.
|
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|
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handle_call(get_alarms, Alarms) -> {ok, Alarms, Alarms};
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handle_call(_Query, Alarms) -> {ok, {error, bad_query}, Alarms}.
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terminate(swap, Alarms) ->
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{?MODULE, Alarms};
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terminate(_, _) ->
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ok.
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@ -76,8 +76,8 @@ start_servers(Sup) ->
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{"emqttd pubsub", {supervisor, emqttd_pubsub_sup}},
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{"emqttd stats", emqttd_stats},
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{"emqttd metrics", emqttd_metrics},
|
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%{"emqttd router", emqttd_router},
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{"emqttd broker", emqttd_broker},
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{"emqttd alarm", emqttd_alarm},
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{"emqttd mode supervisor", emqttd_mod_sup},
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{"emqttd bridge supervisor", {supervisor, emqttd_bridge_sup}},
|
||||
{"emqttd access control", emqttd_access_control},
|
||||
|
|
|
|||
|
|
@ -1,15 +1,143 @@
|
|||
%%%-----------------------------------------------------------------------------
|
||||
%%% Copyright (c) 2012-2015 eMQTT.IO, All Rights Reserved.
|
||||
%%%
|
||||
%%% Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
%%% of this software and associated documentation files (the "Software"), to deal
|
||||
%%% in the Software without restriction, including without limitation the rights
|
||||
%%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
%%% copies of the Software, and to permit persons to whom the Software is
|
||||
%%% furnished to do so, subject to the following conditions:
|
||||
%%%
|
||||
%%% The above copyright notice and this permission notice shall be included in all
|
||||
%%% copies or substantial portions of the Software.
|
||||
%%%
|
||||
%%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
%%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
%%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
%%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
%%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
%%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
%%% SOFTWARE.
|
||||
%%%-----------------------------------------------------------------------------
|
||||
%%% @doc
|
||||
%%% Simple message queue.
|
||||
%%%
|
||||
%%% Notice that MQTT is not an enterprise messaging queue. MQTT assume that client
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||||
%%% should be online in most of the time.
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||||
%%%
|
||||
%%% This module wraps an erlang queue to store offline messages temporarily for MQTT
|
||||
%%% persistent session.
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||||
%%%
|
||||
%%% If the broker restarted or crashed, all the messages stored will be gone.
|
||||
%%%
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||||
%%% @end
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||||
%%%-----------------------------------------------------------------------------
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||||
|
||||
-module(emqttd_mqueue).
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|
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-export([init/1, in/1]).
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-author("Feng Lee <feng@emqtt.io>").
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||||
|
||||
-record(queue_state, {
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max_queued_messages = 1000
|
||||
}).
|
||||
-include_lib("emqtt/include/emqtt.hrl").
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||||
|
||||
init(Opts) ->
|
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{ok, #queue_state{}}.
|
||||
-export([new/2, name/1,
|
||||
is_empty/1, len/1,
|
||||
in/2, out/1,
|
||||
peek/1,
|
||||
to_list/1]).
|
||||
|
||||
in(Msg, Q = #queue_state{}) ->
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Q.
|
||||
-define(MAX_LEN, 600).
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|
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-define(HIGH_WM, 0.6).
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|
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-define(LOW_WM, 0.2).
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|
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-record(mqueue, {name,
|
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len = 0,
|
||||
max_len = ?MAX_LEN,
|
||||
queue = queue:new(),
|
||||
store_qos0 = false,
|
||||
high_watermark = ?HIGH_WM,
|
||||
low_watermark = ?LOW_WM,
|
||||
alert = false}).
|
||||
|
||||
-type mqueue() :: #mqueue{}.
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||||
|
||||
-type queue_option() :: {max_queued_messages, pos_integer()} %% Max messages queued
|
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| {high_queue_watermark, float()} %% High watermark
|
||||
| {low_queue_watermark, float()} %% Low watermark
|
||||
| {queue_qos0_messages, boolean()}. %% Queue Qos0 messages?
|
||||
|
||||
%%------------------------------------------------------------------------------
|
||||
%% @doc New Queue.
|
||||
%% @end
|
||||
%%------------------------------------------------------------------------------
|
||||
-spec new(binary() | string(), list(queue_option())) -> mqueue().
|
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new(Name, Opts) ->
|
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MaxLen = emqttd_opts:g(max_queued_messages, Opts, ?MAX_LEN),
|
||||
HighWM = round(MaxLen * emqttd_opts:g(high_queue_watermark, Opts, ?HIGH_WM)),
|
||||
LowWM = round(MaxLen * emqttd_opts:g(low_queue_watermark, Opts, ?LOW_WM)),
|
||||
StoreQos0 = emqttd_opts:g(queue_qos0_messages, Opts, false),
|
||||
#mqueue{name = Name,
|
||||
max_len = MaxLen,
|
||||
store_qos0 = StoreQos0,
|
||||
high_watermark = HighWM,
|
||||
low_watermark = LowWM}.
|
||||
|
||||
name(#mqueue{name = Name}) ->
|
||||
Name.
|
||||
|
||||
len(#mqueue{len = Len}) ->
|
||||
Len.
|
||||
|
||||
is_empty(#mqueue{len = 0}) -> true;
|
||||
is_empty(_Q) -> false.
|
||||
|
||||
%%------------------------------------------------------------------------------
|
||||
%% @doc
|
||||
%% Queue one message.
|
||||
%%
|
||||
%% @end
|
||||
%%------------------------------------------------------------------------------
|
||||
-spec in(mqtt_message(), mqueue()) -> mqueue().
|
||||
in(#mqtt_message{qos = ?QOS_0}, MQ = #mqueue{store_qos0 = false}) ->
|
||||
MQ;
|
||||
%% queue is full, drop the oldest
|
||||
in(Msg, MQ = #mqueue{name = Name, len = Len, max_len = MaxLen, queue = Q}) when Len =:= MaxLen ->
|
||||
Q2 = case queue:out(Q) of
|
||||
{{value, OldMsg}, Q1} ->
|
||||
%%TODO: publish the dropped message to $SYS?
|
||||
lager:error("Queue(~s) drop message: ~p", [Name, OldMsg]),
|
||||
Q1;
|
||||
{empty, Q1} -> %% maybe max_len is 1
|
||||
Q1
|
||||
end,
|
||||
MQ#mqueue{queue = queue:in(Msg, Q2)};
|
||||
in(Msg, MQ = #mqueue{len = Len, queue = Q}) ->
|
||||
maybe_set_alarm(MQ#mqueue{len = Len+1, queue = queue:in(Msg, Q)}).
|
||||
|
||||
out(MQ = #mqueue{len = 0, queue = _Q}) ->
|
||||
{empty, MQ};
|
||||
out(MQ = #mqueue{len = Len, queue = Q}) ->
|
||||
{Result, Q1} = queue:out(Q),
|
||||
{Result, maybe_clear_alarm(MQ#mqueue{len = Len - 1, queue = Q1})}.
|
||||
|
||||
peek(#mqueue{queue = Q}) ->
|
||||
queue:peek(Q).
|
||||
|
||||
to_list(#mqueue{queue = Q}) ->
|
||||
queue:to_list(Q).
|
||||
|
||||
maybe_set_alarm(MQ = #mqueue{name = Name, len = Len, high_watermark = HighWM, alert = false})
|
||||
when Len >= HighWM ->
|
||||
AlarmDescr = io_lib:format("len ~p > high_watermark ~p", [Len, HighWM]),
|
||||
emqttd_alarm:set_alarm({{queue_high_watermark, Name}, AlarmDescr}),
|
||||
MQ#mqueue{alert = true};
|
||||
maybe_set_alarm(MQ) ->
|
||||
MQ.
|
||||
|
||||
maybe_clear_alarm(MQ = #mqueue{name = Name, len = Len, low_watermark = LowWM, alert = true})
|
||||
when Len =< LowWM ->
|
||||
emqttd_alarm:clear_alarm({queue_high_watermark, Name}), MQ#mqueue{alert = false};
|
||||
maybe_clear_alarm(MQ) ->
|
||||
MQ.
|
||||
|
||||
|
|
|
|||
|
|
@ -28,7 +28,7 @@
|
|||
|
||||
-author("Feng Lee <feng@emqtt.io>").
|
||||
|
||||
-export([merge/2]).
|
||||
-export([merge/2, g/2, g/3]).
|
||||
|
||||
%%------------------------------------------------------------------------------
|
||||
%% @doc Merge Options
|
||||
|
|
@ -50,3 +50,13 @@ merge(Defaults, Options) ->
|
|||
end
|
||||
end, Defaults, Options).
|
||||
|
||||
%%------------------------------------------------------------------------------
|
||||
%% @doc Get option
|
||||
%% @end
|
||||
%%------------------------------------------------------------------------------
|
||||
g(Key, Options) ->
|
||||
proplists:get_value(Key, Options).
|
||||
|
||||
g(Key, Options, Default) ->
|
||||
proplists:get_value(Key, Options, Default).
|
||||
|
||||
|
|
|
|||
|
|
@ -1,98 +0,0 @@
|
|||
%%%-----------------------------------------------------------------------------
|
||||
%%% Copyright (c) 2012-2015 eMQTT.IO, All Rights Reserved.
|
||||
%%%
|
||||
%%% Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
%%% of this software and associated documentation files (the "Software"), to deal
|
||||
%%% in the Software without restriction, including without limitation the rights
|
||||
%%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
%%% copies of the Software, and to permit persons to whom the Software is
|
||||
%%% furnished to do so, subject to the following conditions:
|
||||
%%%
|
||||
%%% The above copyright notice and this permission notice shall be included in all
|
||||
%%% copies or substantial portions of the Software.
|
||||
%%%
|
||||
%%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
%%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
%%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
%%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
%%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
%%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
%%% SOFTWARE.
|
||||
%%%-----------------------------------------------------------------------------
|
||||
%%% @doc
|
||||
%%% emqttd simple queue.
|
||||
%%%
|
||||
%%% @end
|
||||
%%%-----------------------------------------------------------------------------
|
||||
|
||||
%% TODO: this module should be rewrited...
|
||||
|
||||
-module(emqttd_queue).
|
||||
|
||||
-author("Feng Lee <feng@emqtt.io>").
|
||||
|
||||
-include_lib("emqtt/include/emqtt.hrl").
|
||||
|
||||
-export([new/1, new/2, in/3, all/1, clear/1]).
|
||||
|
||||
-define(DEFAULT_MAX_LEN, 1000).
|
||||
|
||||
-record(mqtt_queue_wrapper, {queue = queue:new(),
|
||||
max_len = ?DEFAULT_MAX_LEN,
|
||||
store_qos0 = false}).
|
||||
|
||||
-type mqtt_queue() :: #mqtt_queue_wrapper{}.
|
||||
|
||||
%%------------------------------------------------------------------------------
|
||||
%% @doc
|
||||
%% New Queue.
|
||||
%%
|
||||
%% @end
|
||||
%%------------------------------------------------------------------------------
|
||||
-spec new(non_neg_integer()) -> mqtt_queue().
|
||||
new(MaxLen) -> #mqtt_queue_wrapper{max_len = MaxLen}.
|
||||
|
||||
new(MaxLen, StoreQos0) -> #mqtt_queue_wrapper{max_len = MaxLen, store_qos0 = StoreQos0}.
|
||||
|
||||
%%------------------------------------------------------------------------------
|
||||
%% @doc
|
||||
%% Queue one message.
|
||||
%%
|
||||
%% @end
|
||||
%%------------------------------------------------------------------------------
|
||||
-spec in(binary(), mqtt_message(), mqtt_queue()) -> mqtt_queue().
|
||||
in(ClientId, Message = #mqtt_message{qos = Qos},
|
||||
Wrapper = #mqtt_queue_wrapper{queue = Queue, max_len = MaxLen}) ->
|
||||
case queue:len(Queue) < MaxLen of
|
||||
true ->
|
||||
Wrapper#mqtt_queue_wrapper{queue = queue:in(Message, Queue)};
|
||||
false -> % full
|
||||
if
|
||||
Qos =:= ?QOS_0 ->
|
||||
lager:error("Queue ~s drop qos0 message: ~p", [ClientId, Message]),
|
||||
Wrapper;
|
||||
true ->
|
||||
{{value, Msg}, Queue1} = queue:drop(Queue),
|
||||
lager:error("Queue ~s drop message: ~p", [ClientId, Msg]),
|
||||
Wrapper#mqtt_queue_wrapper{queue = queue:in(Message, Queue1)}
|
||||
end
|
||||
end.
|
||||
|
||||
%%------------------------------------------------------------------------------
|
||||
%% @doc
|
||||
%% Get all messages in queue.
|
||||
%%
|
||||
%% @end
|
||||
%%------------------------------------------------------------------------------
|
||||
-spec all(mqtt_queue()) -> list().
|
||||
all(#mqtt_queue_wrapper { queue = Queue }) -> queue:to_list(Queue).
|
||||
|
||||
%%------------------------------------------------------------------------------
|
||||
%% @doc
|
||||
%% Clear queue.
|
||||
%%
|
||||
%% @end
|
||||
%%------------------------------------------------------------------------------
|
||||
-spec clear(mqtt_queue()) -> mqtt_queue().
|
||||
clear(Queue) -> Queue#mqtt_queue_wrapper{queue = queue:new()}.
|
||||
|
||||
|
|
@ -210,17 +210,31 @@ puback(SessPid, {?PUBCOMP, PacketId}) when is_pid(SessPid) ->
|
|||
%%------------------------------------------------------------------------------
|
||||
-spec subscribe(session(), [{binary(), mqtt_qos()}]) -> {ok, session(), [mqtt_qos()]}.
|
||||
subscribe(SessState = #session_state{clientid = ClientId, submap = SubMap}, Topics) ->
|
||||
Resubs = [Topic || {Name, _Qos} = Topic <- Topics, maps:is_key(Name, SubMap)],
|
||||
case Resubs of
|
||||
[] -> ok;
|
||||
_ -> lager:warning("~s resubscribe ~p", [ClientId, Resubs])
|
||||
end,
|
||||
SubMap1 = lists:foldl(fun({Name, Qos}, Acc) -> maps:put(Name, Qos, Acc) end, SubMap, Topics),
|
||||
|
||||
%% subscribe first and don't care if the subscriptions have been existed
|
||||
{ok, GrantedQos} = emqttd_pubsub:subscribe(Topics),
|
||||
|
||||
lager:info([{client, ClientId}], "Client ~s subscribe ~p. Granted QoS: ~p",
|
||||
[ClientId, Topics, GrantedQos]),
|
||||
%%TODO: should be gen_event and notification...
|
||||
[emqttd_msg_store:redeliver(Name, self()) || {Name, _} <- Topics],
|
||||
[ClientId, Topics, GrantedQos]),
|
||||
|
||||
|
||||
%% <MQTT V3.1.1>: 3.8.4
|
||||
%% Where the Topic Filter is not identical to any existing Subscription’s filter,
|
||||
%% a new Subscription is created and all matching retained messages are sent.
|
||||
lists:foreach(fun({Name, _Qos}) ->
|
||||
case maps:is_key(Name, SubMap) of
|
||||
true ->
|
||||
lager:warning("~s resubscribe ~p", [ClientId, Name]);
|
||||
false ->
|
||||
%%TODO: this is not right, rewrite later...
|
||||
emqttd_msg_store:redeliver(Name, self())
|
||||
end
|
||||
end, Topics),
|
||||
|
||||
SubMap1 = lists:foldl(fun({Name, Qos}, Acc) ->
|
||||
maps:put(Name, Qos, Acc)
|
||||
end, SubMap, Topics),
|
||||
|
||||
{ok, SessState#session_state{submap = SubMap1}, GrantedQos};
|
||||
|
||||
subscribe(SessPid, Topics) when is_pid(SessPid) ->
|
||||
|
|
|
|||
Binary file not shown.
|
|
@ -97,14 +97,14 @@
|
|||
{unack_retry_after, 4}
|
||||
]},
|
||||
{queue, [
|
||||
%% Max messages queued when client is disconnected, or inflight messsages is overload
|
||||
%% Max messages queued when client is disconnected, or inflight messsage window is overload
|
||||
{max_queued_messages, 200},
|
||||
%% High watermark of queued messsages
|
||||
{high_queue_watermark, 0.6},
|
||||
{high_queue_watermark, 0.8},
|
||||
%% Low watermark of queued messsages
|
||||
{low_queue_watermark, 0.2},
|
||||
%% Queue Qos0 offline messages?
|
||||
{queue_qos0_messages, false}
|
||||
{queue_qos0_messages, true}
|
||||
]}
|
||||
]},
|
||||
%% Broker Options
|
||||
|
|
|
|||
Loading…
Reference in New Issue