Rewrite emqx_mqueue.erl
Fixed bugs: - Priority queue lack of a `len + 1` logic in `in/2` Changed behaviors: - Topics not found in priority table (from config) will be treated with default priority, instead of hasing topic name to a priority number. - Default priority is now configurable (it was always lower than all configured priorities) - The dropped message due to reaching `max_len` is now returned from `in/2`, so the queue owner (`in/2` caller) can perform autopsy on it
This commit is contained in:
spring2maz
parent
41b79e4f99
commit
ae743ad1f0
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@ -506,17 +506,6 @@ mqtt.wildcard_subscription = true
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## Value: boolean
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mqtt.shared_subscription = true
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## Message queue type.
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##
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## Value: simple | priority
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mqtt.mqueue_type = simple
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## Topic priorities. Default is 0.
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##
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## Priority: Number [0-255]
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##
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## mqtt.mqueue_priorities = topic/1=10,topic/2=8
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##--------------------------------------------------------------------
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## Zones
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##--------------------------------------------------------------------
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@ -649,22 +638,29 @@ zone.external.await_rel_timeout = 300s
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## Default: 2h, 2 hours
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zone.external.session_expiry_interval = 2h
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## Message queue type.
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##
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## Value: simple | priority
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zone.external.mqueue_type = simple
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## Maximum queue length. Enqueued messages when persistent client disconnected,
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## or inflight window is full. 0 means no limit.
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##
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## Value: Number >= 0
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zone.external.max_mqueue_len = 1000
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## Topic priorities. Default is 0.
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## Topic priorities.
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## 'none' to indicate no priority table (by default), hence all messages
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## are treated equal
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##
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## Priority: Number [0-255]
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## Priority number [1-255]
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## Example: topic/1=10,topic/2=8
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## NOTE: comma and equal signs are not allowed for priority topic names
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## NOTE: messages for topics not in the priority table are treated as
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## either highest or lowest priority depending on the configured
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## value for mqueue_default_priority
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##
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## zone.external.mqueue_priorities = topic/1=10,topic/2=8
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zone.external.mqueue_priorities = none
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## Default to highest priority for topics not matching priority table
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##
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## Value: highest | lowest
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zone.external.mqueue_default_priority = highest
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## Whether to enqueue Qos0 messages.
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##
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@ -27,6 +27,12 @@
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-define(ERTS_MINIMUM_REQUIRED, "10.0").
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%%--------------------------------------------------------------------
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%% Configs
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%%--------------------------------------------------------------------
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-define(NO_PRIORITY_TABLE, none).
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%%--------------------------------------------------------------------
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%% Topics' prefix: $SYS | $queue | $share
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%%--------------------------------------------------------------------
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@ -651,18 +651,6 @@ end}.
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{datatype, {enum, [true, false]}}
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]}.
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%% @doc Type: simple | priority
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{mapping, "mqtt.mqueue_type", "emqx.mqueue_type", [
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{default, simple},
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{datatype, {enum, [simple, priority]}}
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]}.
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%% @doc Topic Priorities: 0~255, Default is 0
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{mapping, "mqtt.mqueue_priorities", "emqx.mqueue_priorities", [
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{default, ""},
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{datatype, string}
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]}.
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%%--------------------------------------------------------------------
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%% Zones
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%%--------------------------------------------------------------------
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@ -804,12 +792,6 @@ end}.
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{datatype, {duration, s}}
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]}.
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%% @doc Type: simple | priority
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{mapping, "zone.$name.mqueue_type", "emqx.zones", [
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{default, simple},
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{datatype, {enum, [simple, priority]}}
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]}.
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%% @doc Max queue length. Enqueued messages when persistent client
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%% disconnected, or inflight window is full. 0 means no limit.
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{mapping, "zone.$name.max_mqueue_len", "emqx.zones", [
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@ -817,11 +799,23 @@ end}.
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{datatype, integer}
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]}.
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%% @doc Topic Priorities: 0~255, Default is 0
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%% @doc Topic Priorities, comma separated topic=priority pairs,
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%% where priority should be integer in range 1-255 (inclusive)
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%% 1 being the lowest and 255 being the highest.
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%% default value `none` to indicate no priority table, hence all
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%% messages are treated equal, which means either highest ('infinity'),
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%% or lowest (0) depending on mqueue_default_priority config.
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{mapping, "zone.$name.mqueue_priorities", "emqx.zones", [
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{default, "none"},
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{datatype, string}
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]}.
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%% @doc Default priority for topics not in priority table.
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{mapping, "zone.$name.mqueue_default_priority", "emqx.zones", [
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{default, lowest},
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{datatype, {enum, [highest, lowest]}}
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]}.
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%% @doc Queue Qos0 messages?
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{mapping, "zone.$name.mqueue_store_qos0", "emqx.zones", [
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{default, true},
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@ -886,6 +880,18 @@ end}.
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max_heap_size => Siz1}
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end,
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{force_shutdown_policy, ShutdownPolicy};
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("mqueue_priorities", Val) ->
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case Val of
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"none" -> none; % NO_PRIORITY_TABLE
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_ ->
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lists:foldl(fun(T, Acc) ->
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%% NOTE: space in "= " is intended
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[{Topic, Prio}] = string:tokens(T, "= "),
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P = list_to_integer(Prio),
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(P < 0 orelse P > 255) andalso error({bad_priority, Topic, Prio}),
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maps:put(iolist_to_binary(Topic), P, Acc)
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end, string:tokens(Val, ","))
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end;
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(Opt, Val) ->
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{list_to_atom(Opt), Val}
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end,
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@ -63,8 +63,7 @@ init([Pool, Id, Node, Topic, Options]) ->
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Group = iolist_to_binary(["$bridge:", atom_to_list(Node), ":", Topic]),
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emqx_broker:subscribe(Topic, self(), #{share => Group, qos => ?QOS_0}),
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State = parse_opts(Options, #state{node = Node, subtopic = Topic}),
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MQueue = emqx_mqueue:init(#{type => simple,
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max_len => State#state.max_queue_len,
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MQueue = emqx_mqueue:init(#{max_len => State#state.max_queue_len,
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store_qos0 => true}),
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{ok, State#state{pool = Pool, id = Id, mqueue = MQueue}};
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false ->
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@ -96,7 +95,8 @@ handle_cast(Msg, State) ->
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handle_info({dispatch, _Topic, Msg}, State = #state{mqueue = Q, status = down}) ->
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%% TODO: how to drop???
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{noreply, State#state{mqueue = emqx_mqueue:in(Msg, Q)}};
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{_Dropped, NewQ} = emqx_mqueue:in(Msg, Q),
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{noreply, State#state{mqueue = NewQ}};
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handle_info({dispatch, _Topic, Msg}, State = #state{node = Node, status = up}) ->
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emqx_rpc:cast(Node, emqx_broker, publish, [transform(Msg, State)]),
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@ -13,8 +13,8 @@
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%% @doc A Simple in-memory message queue.
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%%
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%% 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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%% Notice that MQTT is not a (on-disk) persistent messaging queue.
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%% It assumes that clients should be online in most of the time.
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%%
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%% This module implements a simple in-memory queue for MQTT persistent session.
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%%
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@ -37,7 +37,8 @@
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%% 3. QoS=0 messages are only enqueued when `store_qos0' is given `true`
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%% in init options
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%%
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%% 4. If the queue is full drop the oldest one unless `max_len' is set to `0'.
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%% 4. If the queue is full, drop the oldest one
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%% unless `max_len' is set to `0' which implies (`infinity').
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%%
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%% @end
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@ -46,132 +47,122 @@
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-include("emqx.hrl").
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-include("emqx_mqtt.hrl").
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-export([init/1, type/1]).
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-export([init/1]).
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-export([is_empty/1]).
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-export([len/1, max_len/1]).
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-export([in/2, out/1]).
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-export([stats/1, dropped/1]).
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-define(PQUEUE, emqx_pqueue).
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-export_type([mqueue/0, options/0]).
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-type(priority() :: {iolist(), pos_integer()}).
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-type(options() :: #{type := simple | priority,
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max_len := non_neg_integer(),
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priorities => list(priority()),
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store_qos0 => boolean()}).
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-type(topic() :: emqx_topic:topic()).
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-type(priority() :: infinity | integer()).
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-type(pq() :: emqx_pqueue:q()).
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-type(count() :: non_neg_integer()).
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-type(p_table() :: ?NO_PRIORITY_TABLE | #{topic() := priority()}).
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-type(options() :: #{max_len := count(),
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priorities => p_table(),
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default_priority => highest | lowest,
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store_qos0 => boolean()
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}).
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-type(message() :: pemqx_types:message()).
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-type(stat() :: {len, non_neg_integer()}
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| {max_len, non_neg_integer()}
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| {dropped, non_neg_integer()}).
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-define(PQUEUE, emqx_pqueue).
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-define(LOWEST_PRIORITY, 0).
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-define(HIGHEST_PRIORITY, infinity).
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-define(MAX_LEN_INFINITY, 0).
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-record(mqueue, {
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type :: simple | priority,
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q :: queue:queue() | ?PQUEUE:q(),
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%% priority table
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priorities = [],
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pseq = 0,
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len = 0,
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max_len = 0,
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qos0 = false,
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dropped = 0
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store_qos0 = false :: boolean(),
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max_len = ?MAX_LEN_INFINITY :: count(),
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len = 0 :: count(),
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dropped = 0 :: count(),
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p_table = ?NO_PRIORITY_TABLE :: p_table(),
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default_p = ?LOWEST_PRIORITY :: priority(),
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q = ?PQUEUE:new() :: pq()
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}).
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-type(mqueue() :: #mqueue{}).
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-export_type([mqueue/0, priority/0, options/0]).
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-opaque(mqueue() :: #mqueue{}).
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-spec(init(options()) -> mqueue()).
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init(Opts = #{type := Type, max_len := MaxLen, store_qos0 := QoS0}) ->
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init_q(#mqueue{type = Type, len = 0, max_len = MaxLen, qos0 = QoS0}, Opts).
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init(Opts = #{max_len := MaxLen0, store_qos0 := QoS0}) ->
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MaxLen = case (is_integer(MaxLen0) andalso MaxLen0 > ?MAX_LEN_INFINITY) of
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true -> MaxLen0;
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false -> ?MAX_LEN_INFINITY
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end,
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#mqueue{max_len = MaxLen,
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store_qos0 = QoS0,
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p_table = get_opt(priorities, Opts, ?NO_PRIORITY_TABLE),
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default_p = get_priority_opt(Opts)
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}.
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init_q(MQ = #mqueue{type = simple}, _Opts) ->
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MQ#mqueue{q = queue:new()};
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init_q(MQ = #mqueue{type = priority}, #{priorities := Priorities}) ->
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init_pq(Priorities, MQ#mqueue{q = ?PQUEUE:new()}).
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is_empty(#mqueue{len = Len}) -> Len =:= 0.
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init_pq([], MQ) ->
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MQ;
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init_pq([{Topic, P} | L], MQ) ->
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{_, MQ1} = insert_p(iolist_to_binary(Topic), P, MQ),
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init_pq(L, MQ1).
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insert_p(Topic, P, MQ = #mqueue{priorities = L, pseq = Seq}) ->
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<<PInt:48>> = <<P:8, (erlang:phash2(Topic)):32, Seq:8>>,
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{PInt, MQ#mqueue{priorities = [{Topic, PInt} | L], pseq = Seq + 1}}.
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-spec(type(mqueue()) -> simple | priority).
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type(#mqueue{type = Type}) -> Type.
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is_empty(#mqueue{type = simple, len = Len}) -> Len =:= 0;
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is_empty(#mqueue{type = priority, q = Q}) -> ?PQUEUE:is_empty(Q).
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len(#mqueue{type = simple, len = Len}) -> Len;
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len(#mqueue{type = priority, q = Q}) -> ?PQUEUE:len(Q).
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len(#mqueue{len = Len}) -> Len.
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max_len(#mqueue{max_len = MaxLen}) -> MaxLen.
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%% @doc Dropped of the mqueue
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-spec(dropped(mqueue()) -> non_neg_integer()).
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%% @doc Return number of dropped messages.
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-spec(dropped(mqueue()) -> count()).
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dropped(#mqueue{dropped = Dropped}) -> Dropped.
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%% @doc Stats of the mqueue
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-spec(stats(mqueue()) -> [stat()]).
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stats(#mqueue{type = Type, q = Q, max_len = MaxLen, len = Len, dropped = Dropped}) ->
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[{len, case Type of
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simple -> Len;
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priority -> ?PQUEUE:len(Q)
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end} | [{max_len, MaxLen}, {dropped, Dropped}]].
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stats(#mqueue{max_len = MaxLen, dropped = Dropped} = MQ) ->
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[{len, len(MQ)}, {max_len, MaxLen}, {dropped, Dropped}].
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%% @doc Enqueue a message.
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-spec(in(emqx_types:message(), mqueue()) -> mqueue()).
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in(#message{qos = ?QOS_0}, MQ = #mqueue{qos0 = false}) ->
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MQ;
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in(Msg, MQ = #mqueue{type = simple, q = Q, len = Len, max_len = 0}) ->
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MQ#mqueue{q = queue:in(Msg, Q), len = Len + 1};
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in(Msg, MQ = #mqueue{type = simple, q = Q, len = Len, max_len = MaxLen, dropped = Dropped})
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when Len >= MaxLen ->
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{{value, _Old}, Q2} = queue:out(Q),
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MQ#mqueue{q = queue:in(Msg, Q2), dropped = Dropped +1};
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in(Msg, MQ = #mqueue{type = simple, q = Q, len = Len}) ->
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MQ#mqueue{q = queue:in(Msg, Q), len = Len + 1};
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in(Msg = #message{topic = Topic}, MQ = #mqueue{type = priority, q = Q,
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priorities = Priorities,
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max_len = 0}) ->
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case lists:keysearch(Topic, 1, Priorities) of
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{value, {_, Pri}} ->
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MQ#mqueue{q = ?PQUEUE:in(Msg, Pri, Q)};
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-spec(in(message(), mqueue()) -> {undefined | message(), mqueue()}).
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in(#message{qos = ?QOS_0}, MQ = #mqueue{store_qos0 = false}) ->
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{_Dropped = undefined, MQ};
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in(Msg = #message{topic = Topic}, MQ = #mqueue{default_p = Dp,
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p_table = PTab,
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q = Q,
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len = Len,
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max_len = MaxLen,
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dropped = Dropped
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} = MQ) ->
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Priority = get_priority(Topic, PTab, Dp),
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PLen = ?PQUEUE:plen(Priority, Q),
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case MaxLen =/= ?MAX_LEN_INFINITY andalso PLen =:= MaxLen of
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true ->
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%% reached max length, drop the oldest message
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{{value, DroppedMsg}, Q1} = ?PQUEUE:out(Priority, Q),
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Q2 = ?PQUEUE:in(Msg, Priority, Q1),
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{DroppedMsg, MQ#mqueue{q = Q2, dropped = Dropped + 1}};
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false ->
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{Pri, MQ1} = insert_p(Topic, 0, MQ),
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MQ1#mqueue{q = ?PQUEUE:in(Msg, Pri, Q)}
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end;
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in(Msg = #message{topic = Topic}, MQ = #mqueue{type = priority, q = Q,
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priorities = Priorities,
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max_len = MaxLen}) ->
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case lists:keysearch(Topic, 1, Priorities) of
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{value, {_, Pri}} ->
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case ?PQUEUE:plen(Pri, Q) >= MaxLen of
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true ->
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{_, Q1} = ?PQUEUE:out(Pri, Q),
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MQ#mqueue{q = ?PQUEUE:in(Msg, Pri, Q1)};
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false ->
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MQ#mqueue{q = ?PQUEUE:in(Msg, Pri, Q)}
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end;
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false ->
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{Pri, MQ1} = insert_p(Topic, 0, MQ),
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MQ1#mqueue{q = ?PQUEUE:in(Msg, Pri, Q)}
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{_DroppedMsg = undefined, MQ#mqueue{len = Len + 1, q = ?PQUEUE:in(Msg, Priority, Q)}}
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end.
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out(MQ = #mqueue{type = simple, len = 0}) ->
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-spec(out(mqueue()) -> {empty | {value, message()}, mqueue()}).
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out(MQ = #mqueue{len = 0, q = Q}) ->
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0 = ?PQUEUE:len(Q), %% assert, in this case, ?PQUEUE:len should be very cheap
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{empty, MQ};
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out(MQ = #mqueue{type = simple, q = Q, len = Len, max_len = 0}) ->
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{R, Q2} = queue:out(Q),
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{R, MQ#mqueue{q = Q2, len = Len - 1}};
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out(MQ = #mqueue{type = simple, q = Q, len = Len}) ->
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{R, Q2} = queue:out(Q),
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{R, MQ#mqueue{q = Q2, len = Len - 1}};
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out(MQ = #mqueue{type = priority, q = Q}) ->
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{R, Q2} = ?PQUEUE:out(Q),
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{R, MQ#mqueue{q = Q2}}.
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out(MQ = #mqueue{q = Q, len = Len}) ->
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{R, Q1} = ?PQUEUE:out(Q),
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{R, MQ#mqueue{q = Q1, len = Len - 1}}.
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get_opt(Key, Opts, Default) ->
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case maps:get(Key, Opts, Default) of
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undefined -> Default;
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X -> X
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end.
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get_priority_opt(Opts) ->
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case get_opt(default_priority, Opts, ?LOWEST_PRIORITY) of
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lowest -> ?LOWEST_PRIORITY;
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highest -> ?HIGHEST_PRIORITY;
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N when is_integer(N) -> N
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end.
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%% MICRO-OPTIMIZATION: When there is no priority table defined (from config),
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%% disregard default priority from config, always use lowest (?LOWEST_PRIORITY=0)
|
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%% because the lowest priority in emqx_pqueue is a fallback to queue:queue()
|
||||
%% while the highest 'infinity' is a [{infinity, queue:queue()}]
|
||||
get_priority(_Topic, ?NO_PRIORITY_TABLE, _) -> ?LOWEST_PRIORITY;
|
||||
get_priority(Topic, PTab, Dp) -> maps:get(Topic, PTab, Dp).
|
||||
|
||||
|
|
|
|||
|
|
@ -377,10 +377,10 @@ init([Parent, #{zone := Zone,
|
|||
gen_server:enter_loop(?MODULE, [{hibernate_after, IdleTimout}], State).
|
||||
|
||||
init_mqueue(Zone) ->
|
||||
emqx_mqueue:init(#{type => get_env(Zone, mqueue_type, simple),
|
||||
max_len => get_env(Zone, max_mqueue_len, 1000),
|
||||
priorities => get_env(Zone, mqueue_priorities, ""),
|
||||
store_qos0 => get_env(Zone, mqueue_store_qos0, true)
|
||||
emqx_mqueue:init(#{max_len => get_env(Zone, max_mqueue_len, 1000),
|
||||
store_qos0 => get_env(Zone, mqueue_store_qos0, true),
|
||||
priorities => get_env(Zone, mqueue_priorities),
|
||||
default_priority => get_env(Zone, mqueue_default_priority)
|
||||
}).
|
||||
|
||||
binding(ConnPid) ->
|
||||
|
|
@ -817,7 +817,8 @@ dispatch(Msg = #message{qos = QoS} = Msg,
|
|||
end.
|
||||
|
||||
enqueue_msg(Msg, State = #state{mqueue = Q}) ->
|
||||
inc_stats(enqueue, Msg, State#state{mqueue = emqx_mqueue:in(Msg, Q)}).
|
||||
{_Dropped, NewQ} = emqx_mqueue:in(Msg, Q),
|
||||
inc_stats(enqueue, Msg, State#state{mqueue = NewQ}).
|
||||
|
||||
%%------------------------------------------------------------------------------
|
||||
%% Deliver
|
||||
|
|
|
|||
|
|
@ -28,57 +28,58 @@ all() -> [t_in, t_in_qos0, t_out, t_simple_mqueue, t_infinity_simple_mqueue,
|
|||
t_priority_mqueue, t_infinity_priority_mqueue].
|
||||
|
||||
t_in(_) ->
|
||||
Opts = #{type => simple, max_len => 5, store_qos0 => true},
|
||||
Opts = #{max_len => 5, store_qos0 => true},
|
||||
Q = ?Q:init(Opts),
|
||||
?assert(?Q:is_empty(Q)),
|
||||
Q1 = ?Q:in(#message{}, Q),
|
||||
{_, Q1} = ?Q:in(#message{}, Q),
|
||||
?assertEqual(1, ?Q:len(Q1)),
|
||||
Q2 = ?Q:in(#message{qos = 1}, Q1),
|
||||
{_, Q2} = ?Q:in(#message{qos = 1}, Q1),
|
||||
?assertEqual(2, ?Q:len(Q2)),
|
||||
Q3 = ?Q:in(#message{qos = 2}, Q2),
|
||||
Q4 = ?Q:in(#message{}, Q3),
|
||||
Q5 = ?Q:in(#message{}, Q4),
|
||||
{_, Q3} = ?Q:in(#message{qos = 2}, Q2),
|
||||
{_, Q4} = ?Q:in(#message{}, Q3),
|
||||
{_, Q5} = ?Q:in(#message{}, Q4),
|
||||
?assertEqual(5, ?Q:len(Q5)).
|
||||
|
||||
t_in_qos0(_) ->
|
||||
Opts = #{type => simple, max_len => 5, store_qos0 => false},
|
||||
Opts = #{max_len => 5, store_qos0 => false},
|
||||
Q = ?Q:init(Opts),
|
||||
Q1 = ?Q:in(#message{qos = 0}, Q),
|
||||
{_, Q1} = ?Q:in(#message{qos = 0}, Q),
|
||||
?assert(?Q:is_empty(Q1)),
|
||||
Q2 = ?Q:in(#message{qos = 0}, Q1),
|
||||
{_, Q2} = ?Q:in(#message{qos = 0}, Q1),
|
||||
?assert(?Q:is_empty(Q2)).
|
||||
|
||||
t_out(_) ->
|
||||
Opts = #{type => simple, max_len => 5, store_qos0 => true},
|
||||
Opts = #{max_len => 5, store_qos0 => true},
|
||||
Q = ?Q:init(Opts),
|
||||
{empty, Q} = ?Q:out(Q),
|
||||
Q1 = ?Q:in(#message{}, Q),
|
||||
{_, Q1} = ?Q:in(#message{}, Q),
|
||||
{Value, Q2} = ?Q:out(Q1),
|
||||
?assertEqual(0, ?Q:len(Q2)),
|
||||
?assertEqual({value, #message{}}, Value).
|
||||
|
||||
t_simple_mqueue(_) ->
|
||||
Opts = #{type => simple, max_len => 3, store_qos0 => false},
|
||||
Opts = #{max_len => 3, store_qos0 => false},
|
||||
Q = ?Q:init(Opts),
|
||||
?assertEqual(simple, ?Q:type(Q)),
|
||||
?assertEqual(3, ?Q:max_len(Q)),
|
||||
?assert(?Q:is_empty(Q)),
|
||||
Q1 = ?Q:in(#message{qos = 1, payload = <<"1">>}, Q),
|
||||
Q2 = ?Q:in(#message{qos = 1, payload = <<"2">>}, Q1),
|
||||
Q3 = ?Q:in(#message{qos = 1, payload = <<"3">>}, Q2),
|
||||
Q4 = ?Q:in(#message{qos = 1, payload = <<"4">>}, Q3),
|
||||
{_, Q1} = ?Q:in(#message{qos = 1, payload = <<"1">>}, Q),
|
||||
{_, Q2} = ?Q:in(#message{qos = 1, payload = <<"2">>}, Q1),
|
||||
{_, Q3} = ?Q:in(#message{qos = 1, payload = <<"3">>}, Q2),
|
||||
{_, Q4} = ?Q:in(#message{qos = 1, payload = <<"4">>}, Q3),
|
||||
?assertEqual(3, ?Q:len(Q4)),
|
||||
{{value, Msg}, Q5} = ?Q:out(Q4),
|
||||
?assertEqual(<<"2">>, Msg#message.payload),
|
||||
?assertEqual([{len, 2}, {max_len, 3}, {dropped, 1}], ?Q:stats(Q5)).
|
||||
|
||||
t_infinity_simple_mqueue(_) ->
|
||||
Opts = #{type => simple, max_len => 0, store_qos0 => false},
|
||||
Opts = #{max_len => 0, store_qos0 => false},
|
||||
Q = ?Q:init(Opts),
|
||||
?assert(?Q:is_empty(Q)),
|
||||
?assertEqual(0, ?Q:max_len(Q)),
|
||||
Qx = lists:foldl(fun(I, AccQ) ->
|
||||
?Q:in(#message{qos = 1, payload = iolist_to_binary([I])}, AccQ)
|
||||
Qx = lists:foldl(
|
||||
fun(I, AccQ) ->
|
||||
{_, NewQ} = ?Q:in(#message{qos = 1, payload = iolist_to_binary([I])}, AccQ),
|
||||
NewQ
|
||||
end, Q, lists:seq(1, 255)),
|
||||
?assertEqual(255, ?Q:len(Qx)),
|
||||
?assertEqual([{len, 255}, {max_len, 0}, {dropped, 0}], ?Q:stats(Qx)),
|
||||
|
|
@ -86,45 +87,55 @@ t_infinity_simple_mqueue(_) ->
|
|||
?assertEqual(<<1>>, V#message.payload).
|
||||
|
||||
t_priority_mqueue(_) ->
|
||||
Opts = #{type => priority, max_len => 3, priorities => [{<<"t1">>, 1}, {<<"t2">>, 2}, {<<"t3">>, 3}], store_qos0 => false},
|
||||
Opts = #{max_len => 3,
|
||||
priorities =>
|
||||
#{<<"t1">> => 1,
|
||||
<<"t2">> => 2,
|
||||
<<"t3">> => 3
|
||||
},
|
||||
store_qos0 => false},
|
||||
Q = ?Q:init(Opts),
|
||||
?assertEqual(priority, ?Q:type(Q)),
|
||||
?assertEqual(3, ?Q:max_len(Q)),
|
||||
?assert(?Q:is_empty(Q)),
|
||||
Q1 = ?Q:in(#message{qos = 1, topic = <<"t2">>}, Q),
|
||||
Q2 = ?Q:in(#message{qos = 1, topic = <<"t1">>}, Q1),
|
||||
Q3 = ?Q:in(#message{qos = 1, topic = <<"t3">>}, Q2),
|
||||
{_, Q1} = ?Q:in(#message{qos = 1, topic = <<"t2">>}, Q),
|
||||
{_, Q2} = ?Q:in(#message{qos = 1, topic = <<"t1">>}, Q1),
|
||||
{_, Q3} = ?Q:in(#message{qos = 1, topic = <<"t3">>}, Q2),
|
||||
?assertEqual(3, ?Q:len(Q3)),
|
||||
Q4 = ?Q:in(#message{qos = 1, topic = <<"t2">>}, Q3),
|
||||
{_, Q4} = ?Q:in(#message{qos = 1, topic = <<"t2">>}, Q3),
|
||||
?assertEqual(4, ?Q:len(Q4)),
|
||||
Q5 = ?Q:in(#message{qos = 1, topic = <<"t2">>}, Q4),
|
||||
{_, Q5} = ?Q:in(#message{qos = 1, topic = <<"t2">>}, Q4),
|
||||
?assertEqual(5, ?Q:len(Q5)),
|
||||
Q6 = ?Q:in(#message{qos = 1, topic = <<"t2">>}, Q5),
|
||||
{_, Q6} = ?Q:in(#message{qos = 1, topic = <<"t2">>}, Q5),
|
||||
?assertEqual(5, ?Q:len(Q6)),
|
||||
{{value, Msg}, Q7} = ?Q:out(Q6),
|
||||
?assertEqual(4, ?Q:len(Q7)),
|
||||
?assertEqual(<<"t3">>, Msg#message.topic).
|
||||
|
||||
t_infinity_priority_mqueue(_) ->
|
||||
Opts = #{type => priority, max_len => 0, priorities => [{<<"t">>, 1}, {<<"t1">>, 2}], store_qos0 => false},
|
||||
Opts = #{max_len => 0,
|
||||
priorities =>
|
||||
#{<<"t">> => 1,
|
||||
<<"t1">> => 2
|
||||
},
|
||||
store_qos0 => false},
|
||||
Q = ?Q:init(Opts),
|
||||
?assertEqual(0, ?Q:max_len(Q)),
|
||||
Qx = lists:foldl(fun(I, AccQ) ->
|
||||
AccQ1 =
|
||||
?Q:in(#message{topic = <<"t1">>, qos = 1, payload = iolist_to_binary([I])}, AccQ),
|
||||
?Q:in(#message{topic = <<"t">>, qos = 1, payload = iolist_to_binary([I])}, AccQ1)
|
||||
end, Q, lists:seq(1, 255)),
|
||||
{undefined, AccQ1} = ?Q:in(#message{topic = <<"t1">>, qos = 1, payload = iolist_to_binary([I])}, AccQ),
|
||||
{undefined, AccQ2} = ?Q:in(#message{topic = <<"t">>, qos = 1, payload = iolist_to_binary([I])}, AccQ1),
|
||||
AccQ2
|
||||
end, Q, lists:seq(1, 255)),
|
||||
?assertEqual(510, ?Q:len(Qx)),
|
||||
?assertEqual([{len, 510}, {max_len, 0}, {dropped, 0}], ?Q:stats(Qx)).
|
||||
|
||||
t_priority_mqueue2(_) ->
|
||||
Opts = #{type => priority, max_length => 2, store_qos0 => false},
|
||||
Opts = #{max_length => 2, store_qos0 => false},
|
||||
Q = ?Q:init("priority_queue2_test", Opts),
|
||||
2 = ?Q:max_len(Q),
|
||||
Q1 = ?Q:in(#message{topic = <<"x">>, qos = 1, payload = <<1>>}, Q),
|
||||
Q2 = ?Q:in(#message{topic = <<"x">>, qos = 1, payload = <<2>>}, Q1),
|
||||
Q3 = ?Q:in(#message{topic = <<"y">>, qos = 1, payload = <<3>>}, Q2),
|
||||
Q4 = ?Q:in(#message{topic = <<"y">>, qos = 1, payload = <<4>>}, Q3),
|
||||
{_, Q1} = ?Q:in(#message{topic = <<"x">>, qos = 1, payload = <<1>>}, Q),
|
||||
{_, Q2} = ?Q:in(#message{topic = <<"x">>, qos = 1, payload = <<2>>}, Q1),
|
||||
{_, Q3} = ?Q:in(#message{topic = <<"y">>, qos = 1, payload = <<3>>}, Q2),
|
||||
{_, Q4} = ?Q:in(#message{topic = <<"y">>, qos = 1, payload = <<4>>}, Q3),
|
||||
4 = ?Q:len(Q4),
|
||||
{{value, _Val}, Q5} = ?Q:out(Q4),
|
||||
3 = ?Q:len(Q5).
|
||||
|
|
|
|||
Loading…
Reference in New Issue