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.args.yaml Normal file
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metrics:
-
key: serial
type: string
label: "智慧照明设备id"
config:
default: ""
maxlen: 20
-
key: device_uuid
type: string
label: "设备的uuid"
config:
default: ""
maxlen: 50
boot: "./boot.sh"
# stop can be used for execute stop action
stop: "./stop.sh"
# coll / collect for collection, has data upload
# stream has transform
# up / upload for data upload
service_type: "coll"
run_as_root: true

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.rebar3
_*
.eunit
*.o
*.beam
*.plt
*.swp
*.swo
.erlang.cookie
ebin
log
erl_crash.dump
.rebar
logs
_build
.idea
*.iml
rebar3.crashdump
*~
config/sys.config

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demo1-1.0

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FROM erlang:25.3
CMD /data/power_gateway/bin/power_gateway foreground

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
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result of this License or out of the use or inability to use the
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has been advised of the possibility of such damages.
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the Work or Derivative Works thereof, You may choose to offer,
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License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
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defend, and hold each Contributor harmless for any liability
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END OF TERMS AND CONDITIONS
Copyright 2023, anlicheng <anlicheng@xywy.com>.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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power_gateway
=====
An OTP application
Build
-----
$ rebar3 compile

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%%--------------------------------------------------------------------
%% Copyright (c) 2020 EMQ Technologies Co., Ltd. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%--------------------------------------------------------------------
-ifndef(EMQTT_HRL).
-define(EMQTT_HRL, true).
%%--------------------------------------------------------------------
%% MQTT Protocol Version and Names
%%--------------------------------------------------------------------
-define(MQTT_PROTO_V3, 3).
-define(MQTT_PROTO_V4, 4).
-define(MQTT_PROTO_V5, 5).
-define(PROTOCOL_NAMES, [
{?MQTT_PROTO_V3, <<"MQIsdp">>},
{?MQTT_PROTO_V4, <<"MQTT">>},
{?MQTT_PROTO_V5, <<"MQTT">>}]).
%%--------------------------------------------------------------------
%% MQTT QoS Levels
%%--------------------------------------------------------------------
-define(QOS_0, 0). %% At most once
-define(QOS_1, 1). %% At least once
-define(QOS_2, 2). %% Exactly once
-define(IS_QOS(I), (I >= ?QOS_0 andalso I =< ?QOS_2)).
-define(QOS_I(Name),
begin
(case Name of
?QOS_0 -> ?QOS_0;
qos0 -> ?QOS_0;
at_most_once -> ?QOS_0;
?QOS_1 -> ?QOS_1;
qos1 -> ?QOS_1;
at_least_once -> ?QOS_1;
?QOS_2 -> ?QOS_2;
qos2 -> ?QOS_2;
exactly_once -> ?QOS_2
end)
end).
-define(IS_QOS_NAME(I),
(I =:= qos0 orelse I =:= at_most_once orelse
I =:= qos1 orelse I =:= at_least_once orelse
I =:= qos2 orelse I =:= exactly_once)).
%%--------------------------------------------------------------------
%% Maximum ClientId Length.
%%--------------------------------------------------------------------
-define(MAX_CLIENTID_LEN, 65535).
%%--------------------------------------------------------------------
%% MQTT Control Packet Types
%%--------------------------------------------------------------------
-define(RESERVED, 0). %% Reserved
-define(CONNECT, 1). %% Client request to connect to Server
-define(CONNACK, 2). %% Server to Client: Connect acknowledgment
-define(PUBLISH, 3). %% Publish message
-define(PUBACK, 4). %% Publish acknowledgment
-define(PUBREC, 5). %% Publish received (assured delivery part 1)
-define(PUBREL, 6). %% Publish release (assured delivery part 2)
-define(PUBCOMP, 7). %% Publish complete (assured delivery part 3)
-define(SUBSCRIBE, 8). %% Client subscribe request
-define(SUBACK, 9). %% Server Subscribe acknowledgment
-define(UNSUBSCRIBE, 10). %% Unsubscribe request
-define(UNSUBACK, 11). %% Unsubscribe acknowledgment
-define(PINGREQ, 12). %% PING request
-define(PINGRESP, 13). %% PING response
-define(DISCONNECT, 14). %% Client or Server is disconnecting
-define(AUTH, 15). %% Authentication exchange
-define(TYPE_NAMES, [
'CONNECT',
'CONNACK',
'PUBLISH',
'PUBACK',
'PUBREC',
'PUBREL',
'PUBCOMP',
'SUBSCRIBE',
'SUBACK',
'UNSUBSCRIBE',
'UNSUBACK',
'PINGREQ',
'PINGRESP',
'DISCONNECT',
'AUTH']).
%%--------------------------------------------------------------------
%% MQTT V3.1.1 Connect Return Codes
%%--------------------------------------------------------------------
-define(CONNACK_ACCEPT, 0). %% Connection accepted
-define(CONNACK_PROTO_VER, 1). %% Unacceptable protocol version
-define(CONNACK_INVALID_ID, 2). %% Client Identifier is correct UTF-8 but not allowed by the Server
-define(CONNACK_SERVER, 3). %% Server unavailable
-define(CONNACK_CREDENTIALS, 4). %% Username or password is malformed
-define(CONNACK_AUTH, 5). %% Client is not authorized to connect
%%--------------------------------------------------------------------
%% MQTT V5.0 Reason Codes
%%--------------------------------------------------------------------
-define(RC_SUCCESS, 16#00).
-define(RC_NORMAL_DISCONNECTION, 16#00).
-define(RC_GRANTED_QOS_0, 16#00).
-define(RC_GRANTED_QOS_1, 16#01).
-define(RC_GRANTED_QOS_2, 16#02).
-define(RC_DISCONNECT_WITH_WILL_MESSAGE, 16#04).
-define(RC_NO_MATCHING_SUBSCRIBERS, 16#10).
-define(RC_NO_SUBSCRIPTION_EXISTED, 16#11).
-define(RC_CONTINUE_AUTHENTICATION, 16#18).
-define(RC_RE_AUTHENTICATE, 16#19).
-define(RC_UNSPECIFIED_ERROR, 16#80).
-define(RC_MALFORMED_PACKET, 16#81).
-define(RC_PROTOCOL_ERROR, 16#82).
-define(RC_IMPLEMENTATION_SPECIFIC_ERROR, 16#83).
-define(RC_UNSUPPORTED_PROTOCOL_VERSION, 16#84).
-define(RC_CLIENT_IDENTIFIER_NOT_VALID, 16#85).
-define(RC_BAD_USER_NAME_OR_PASSWORD, 16#86).
-define(RC_NOT_AUTHORIZED, 16#87).
-define(RC_SERVER_UNAVAILABLE, 16#88).
-define(RC_SERVER_BUSY, 16#89).
-define(RC_BANNED, 16#8A).
-define(RC_SERVER_SHUTTING_DOWN, 16#8B).
-define(RC_BAD_AUTHENTICATION_METHOD, 16#8C).
-define(RC_KEEP_ALIVE_TIMEOUT, 16#8D).
-define(RC_SESSION_TAKEN_OVER, 16#8E).
-define(RC_TOPIC_FILTER_INVALID, 16#8F).
-define(RC_TOPIC_NAME_INVALID, 16#90).
-define(RC_PACKET_IDENTIFIER_IN_USE, 16#91).
-define(RC_PACKET_IDENTIFIER_NOT_FOUND, 16#92).
-define(RC_RECEIVE_MAXIMUM_EXCEEDED, 16#93).
-define(RC_TOPIC_ALIAS_INVALID, 16#94).
-define(RC_PACKET_TOO_LARGE, 16#95).
-define(RC_MESSAGE_RATE_TOO_HIGH, 16#96).
-define(RC_QUOTA_EXCEEDED, 16#97).
-define(RC_ADMINISTRATIVE_ACTION, 16#98).
-define(RC_PAYLOAD_FORMAT_INVALID, 16#99).
-define(RC_RETAIN_NOT_SUPPORTED, 16#9A).
-define(RC_QOS_NOT_SUPPORTED, 16#9B).
-define(RC_USE_ANOTHER_SERVER, 16#9C).
-define(RC_SERVER_MOVED, 16#9D).
-define(RC_SHARED_SUBSCRIPTIONS_NOT_SUPPORTED, 16#9E).
-define(RC_CONNECTION_RATE_EXCEEDED, 16#9F).
-define(RC_MAXIMUM_CONNECT_TIME, 16#A0).
-define(RC_SUBSCRIPTION_IDENTIFIERS_NOT_SUPPORTED, 16#A1).
-define(RC_WILDCARD_SUBSCRIPTIONS_NOT_SUPPORTED, 16#A2).
%%--------------------------------------------------------------------
%% Maximum MQTT Packet ID and Length
%%--------------------------------------------------------------------
-define(MAX_PACKET_ID, 16#ffff).
-define(MAX_PACKET_SIZE, 16#fffffff).
%%--------------------------------------------------------------------
%% MQTT Frame Mask
%%--------------------------------------------------------------------
-define(HIGHBIT, 2#10000000).
-define(LOWBITS, 2#01111111).
%%--------------------------------------------------------------------
%% MQTT Packet Fixed Header
%%--------------------------------------------------------------------
-record(mqtt_packet_header, {
type = ?RESERVED,
dup = false,
qos = ?QOS_0,
retain = false
}).
%%--------------------------------------------------------------------
%% MQTT Packets
%%--------------------------------------------------------------------
-define(DEFAULT_SUBOPTS, #{rh => 0, %% Retain Handling
rap => 0, %% Retain as Publish
nl => 0, %% No Local
qos => 0 %% QoS
}).
-record(mqtt_packet_connect, {
proto_name = <<"MQTT">>,
proto_ver = ?MQTT_PROTO_V4,
is_bridge = false,
clean_start = true,
will_flag = false,
will_qos = ?QOS_0,
will_retain = false,
keepalive = 0,
properties = undefined,
clientid = <<>>,
will_props = undefined,
will_topic = undefined,
will_payload = undefined,
username = undefined,
password = undefined
}).
-record(mqtt_packet_connack, {
ack_flags,
reason_code,
properties
}).
-record(mqtt_packet_publish, {
topic_name,
packet_id,
properties
}).
-record(mqtt_packet_puback, {
packet_id,
reason_code,
properties
}).
-record(mqtt_packet_subscribe, {
packet_id,
properties,
topic_filters
}).
-record(mqtt_packet_suback, {
packet_id,
properties,
reason_codes
}).
-record(mqtt_packet_unsubscribe, {
packet_id,
properties,
topic_filters
}).
-record(mqtt_packet_unsuback, {
packet_id,
properties,
reason_codes
}).
-record(mqtt_packet_disconnect, {
reason_code,
properties
}).
-record(mqtt_packet_auth, {
reason_code,
properties
}).
%%--------------------------------------------------------------------
%% MQTT Message
%%--------------------------------------------------------------------
-record(mqtt_msg, {
qos = ?QOS_0 :: emqtt:qos(),
retain = false :: boolean(),
dup = false :: boolean(),
packet_id :: emqtt:packet_id(),
topic :: emqtt:topic(),
props :: emqtt:properties(),
payload :: binary()
}).
%%--------------------------------------------------------------------
%% MQTT Control Packet
%%--------------------------------------------------------------------
-record(mqtt_packet, {
header :: #mqtt_packet_header{},
variable :: #mqtt_packet_connect{}
| #mqtt_packet_connack{}
| #mqtt_packet_publish{}
| #mqtt_packet_puback{}
| #mqtt_packet_subscribe{}
| #mqtt_packet_suback{}
| #mqtt_packet_unsubscribe{}
| #mqtt_packet_unsuback{}
| #mqtt_packet_disconnect{}
| #mqtt_packet_auth{}
| pos_integer()
| undefined,
payload :: binary() | undefined
}).
%%--------------------------------------------------------------------
%% MQTT Packet Match
%%--------------------------------------------------------------------
-define(CONNECT_PACKET(Var),
#mqtt_packet{header = #mqtt_packet_header{type = ?CONNECT},
variable = Var}).
-define(CONNACK_PACKET(ReasonCode),
#mqtt_packet{header = #mqtt_packet_header{type = ?CONNACK},
variable = #mqtt_packet_connack{ack_flags = 0,
reason_code = ReasonCode}
}).
-define(CONNACK_PACKET(ReasonCode, SessPresent),
#mqtt_packet{header = #mqtt_packet_header{type = ?CONNACK},
variable = #mqtt_packet_connack{ack_flags = SessPresent,
reason_code = ReasonCode}
}).
-define(CONNACK_PACKET(ReasonCode, SessPresent, Properties),
#mqtt_packet{header = #mqtt_packet_header{type = ?CONNACK},
variable = #mqtt_packet_connack{ack_flags = SessPresent,
reason_code = ReasonCode,
properties = Properties}
}).
-define(AUTH_PACKET(),
#mqtt_packet{header = #mqtt_packet_header{type = ?AUTH},
variable = #mqtt_packet_auth{reason_code = 0}
}).
-define(AUTH_PACKET(ReasonCode),
#mqtt_packet{header = #mqtt_packet_header{type = ?AUTH},
variable = #mqtt_packet_auth{reason_code = ReasonCode}
}).
-define(AUTH_PACKET(ReasonCode, Properties),
#mqtt_packet{header = #mqtt_packet_header{type = ?AUTH},
variable = #mqtt_packet_auth{reason_code = ReasonCode,
properties = Properties}
}).
-define(PUBLISH_PACKET(QoS),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBLISH, qos = QoS}}).
-define(PUBLISH_PACKET(QoS, PacketId),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBLISH,
qos = QoS},
variable = #mqtt_packet_publish{packet_id = PacketId}
}).
-define(PUBLISH_PACKET(QoS, Topic, PacketId, Payload),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBLISH,
qos = QoS},
variable = #mqtt_packet_publish{topic_name = Topic,
packet_id = PacketId},
payload = Payload
}).
-define(PUBLISH_PACKET(QoS, Topic, PacketId, Properties, Payload),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBLISH,
qos = QoS},
variable = #mqtt_packet_publish{topic_name = Topic,
packet_id = PacketId,
properties = Properties},
payload = Payload
}).
-define(PUBACK_PACKET(PacketId),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBACK},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = 0}
}).
-define(PUBACK_PACKET(PacketId, ReasonCode),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBACK},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode}
}).
-define(PUBACK_PACKET(PacketId, ReasonCode, Properties),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBACK},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode,
properties = Properties}
}).
-define(PUBREC_PACKET(PacketId),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBREC},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = 0}
}).
-define(PUBREC_PACKET(PacketId, ReasonCode),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBREC},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode}
}).
-define(PUBREC_PACKET(PacketId, ReasonCode, Properties),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBREC},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode,
properties = Properties}
}).
-define(PUBREL_PACKET(PacketId),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBREL,
qos = ?QOS_1},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = 0}
}).
-define(PUBREL_PACKET(PacketId, ReasonCode),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBREL,
qos = ?QOS_1},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode}
}).
-define(PUBREL_PACKET(PacketId, ReasonCode, Properties),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBREL,
qos = ?QOS_1},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode,
properties = Properties}
}).
-define(PUBCOMP_PACKET(PacketId),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBCOMP},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = 0}
}).
-define(PUBCOMP_PACKET(PacketId, ReasonCode),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBCOMP},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode}
}).
-define(PUBCOMP_PACKET(PacketId, ReasonCode, Properties),
#mqtt_packet{header = #mqtt_packet_header{type = ?PUBCOMP},
variable = #mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode,
properties = Properties}
}).
-define(SUBSCRIBE_PACKET(PacketId, TopicFilters),
#mqtt_packet{header = #mqtt_packet_header{type = ?SUBSCRIBE,
qos = ?QOS_1},
variable = #mqtt_packet_subscribe{packet_id = PacketId,
topic_filters = TopicFilters}
}).
-define(SUBSCRIBE_PACKET(PacketId, Properties, TopicFilters),
#mqtt_packet{header = #mqtt_packet_header{type = ?SUBSCRIBE,
qos = ?QOS_1},
variable = #mqtt_packet_subscribe{packet_id = PacketId,
properties = Properties,
topic_filters = TopicFilters}
}).
-define(SUBACK_PACKET(PacketId, ReasonCodes),
#mqtt_packet{header = #mqtt_packet_header{type = ?SUBACK},
variable = #mqtt_packet_suback{packet_id = PacketId,
reason_codes = ReasonCodes}
}).
-define(SUBACK_PACKET(PacketId, Properties, ReasonCodes),
#mqtt_packet{header = #mqtt_packet_header{type = ?SUBACK},
variable = #mqtt_packet_suback{packet_id = PacketId,
properties = Properties,
reason_codes = ReasonCodes}
}).
-define(UNSUBSCRIBE_PACKET(PacketId, TopicFilters),
#mqtt_packet{header = #mqtt_packet_header{type = ?UNSUBSCRIBE,
qos = ?QOS_1},
variable = #mqtt_packet_unsubscribe{packet_id = PacketId,
topic_filters = TopicFilters}
}).
-define(UNSUBSCRIBE_PACKET(PacketId, Properties, TopicFilters),
#mqtt_packet{header = #mqtt_packet_header{type = ?UNSUBSCRIBE,
qos = ?QOS_1},
variable = #mqtt_packet_unsubscribe{packet_id = PacketId,
properties = Properties,
topic_filters = TopicFilters}
}).
-define(UNSUBACK_PACKET(PacketId),
#mqtt_packet{header = #mqtt_packet_header{type = ?UNSUBACK},
variable = #mqtt_packet_unsuback{packet_id = PacketId}
}).
-define(UNSUBACK_PACKET(PacketId, ReasonCodes),
#mqtt_packet{header = #mqtt_packet_header{type = ?UNSUBACK},
variable = #mqtt_packet_unsuback{packet_id = PacketId,
reason_codes = ReasonCodes}
}).
-define(UNSUBACK_PACKET(PacketId, Properties, ReasonCodes),
#mqtt_packet{header = #mqtt_packet_header{type = ?UNSUBACK},
variable = #mqtt_packet_unsuback{packet_id = PacketId,
properties = Properties,
reason_codes = ReasonCodes}
}).
-define(DISCONNECT_PACKET(),
#mqtt_packet{header = #mqtt_packet_header{type = ?DISCONNECT},
variable = #mqtt_packet_disconnect{reason_code = 0}
}).
-define(DISCONNECT_PACKET(ReasonCode),
#mqtt_packet{header = #mqtt_packet_header{type = ?DISCONNECT},
variable = #mqtt_packet_disconnect{reason_code = ReasonCode}
}).
-define(DISCONNECT_PACKET(ReasonCode, Properties),
#mqtt_packet{header = #mqtt_packet_header{type = ?DISCONNECT},
variable = #mqtt_packet_disconnect{reason_code = ReasonCode,
properties = Properties}
}).
-define(PACKET(Type), #mqtt_packet{header = #mqtt_packet_header{type = Type}}).
-endif.

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%%%-------------------------------------------------------------------
%%% @copyright (C) 2023, <COMPANY>
%%% @doc
%%%
%%% @end
%%% Created : 28. 8月 2023 15:39
%%%-------------------------------------------------------------------
-module(efka_client).
-author("aresei").
-behaviour(gen_server).
%% 消息包
-record(efka_packet, {
packet_id :: integer(),
type :: integer(),
message :: any()
}).
%% 请求超时时间
-define(EFKA_REQUEST_TIMEOUT, 5000).
%% 消息类型
%% 服务注册
-define(PACKET_TYPE_REGISTER, 16).
%% 上传数据
-define(PACKET_TYPE_METRIC_DATA, 3).
%% 调用其他微服务
-define(PACKET_TYPE_INVOKE, 4).
%% 消息响应
-define(PACKET_TYPE_RESPONSE, 7).
%% efka下发给微服务参数
-define(PACKET_TYPE_PUSH_PARAM, 5).
%% efka下发给微服务采集项
-define(PACKET_TYPE_PUSH_METRIC, 6).
%% 设备状态轮询: 增加日期: 2025-4-16
-define(PACKET_TYPE_POLL, 20).
%% 微服务给efka发送log消息
-define(PACKET_TYPE_LOG, 9).
%% 微服务从efka获取自身的采集项
-define(PACKET_TYPE_REQUEST_METRIC, 10).
%% 微服务从efka获取自身的参数
-define(PACKET_TYPE_REQUEST_PARAM, 12).
%% efka向微服务发送stream-call消息
-define(PACKET_TYPE_PUSH_STREAM_CALL, 11).
%% 微服务事件上报
-define(PACKET_TYPE_EVENT, 15).
%% API
-export([start_link/3]).
-export([device_offline/1, device_online/1]).
-export([send_metric_data/2, invoke_service/3, send_log/1, request_metric/0, request_param/0, send_event/2]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
-record(state, {
packet_id = 0 :: integer(),
host :: string(),
port :: integer(),
%% 请求后未完成的请求
inflight = #{} :: map(),
socket :: gen_tcp:socket()
}).
-spec send_metric_data(Fields :: list(), Tags :: #{}) -> {ok, Result :: any()} | {error, Reason :: any()}.
send_metric_data(Fields, Tags) when is_list(Fields), is_map(Tags) ->
{ok, Ref} = gen_server:call(?MODULE, {send_metric_data, self(), Fields, Tags}),
await_reply(Ref, ?EFKA_REQUEST_TIMEOUT).
-spec invoke_service(ToService :: binary(), Message :: map(), Timeout :: integer()) ->
{ok, Result :: any()} | {error, Reason :: any()}.
invoke_service(ToService, Message, Timeout) when is_binary(ToService), is_map(Message), is_integer(Timeout) ->
{ok, Ref} = gen_server:call(?MODULE, {invoke_service, self(), ToService, Message, Timeout}),
await_reply(Ref, ?EFKA_REQUEST_TIMEOUT).
-spec send_log(Message :: binary() | map()) -> no_return().
send_log(Message) when is_binary(Message); is_map(Message) ->
gen_server:cast(?MODULE, {send_log, Message}).
%% efka_server为了统一，r对象为字符串；需要2次json_decode
-spec request_metric() -> {ok, Result :: list()} | {error, Reason :: any()}.
request_metric() ->
{ok, Ref} = gen_server:call(?MODULE, {request_metric, self()}),
case await_reply(Ref, ?EFKA_REQUEST_TIMEOUT) of
{ok, Reply} ->
{ok, jiffy:decode(Reply, [return_maps])};
Error ->
Error
end.
-spec request_param() -> {ok, Result :: map()} | {error, Reason :: any()}.
request_param() ->
{ok, Ref} = gen_server:call(?MODULE, {request_param, self()}),
case await_reply(Ref, ?EFKA_REQUEST_TIMEOUT) of
{ok, Reply} ->
{ok, jiffy:decode(Reply, [return_maps])};
Error ->
Error
end.
-spec device_offline(DeviceUUID :: binary()) -> no_return().
device_offline(DeviceUUID) when is_binary(DeviceUUID) ->
send_event(1, #{<<"device_uuid">> => DeviceUUID, <<"status">> => 0}).
-spec device_online(DeviceUUID :: binary()) -> no_return().
device_online(DeviceUUID) when is_binary(DeviceUUID) ->
send_event(1, #{<<"device_uuid">> => DeviceUUID, <<"status">> => 1}).
-spec send_event(EventType :: integer(), Params :: binary() | map()) -> no_return().
send_event(EventType, Params) when is_integer(EventType), is_binary(Params); is_map(Params) ->
gen_server:cast(?MODULE, {send_event, EventType, Params}).
%%%===================================================================
%%% API
%%%===================================================================
-spec await_reply(Ref :: reference(), Timeout :: integer()) -> {ok, Result :: any()} | {error, Reason :: any()}.
await_reply(Ref, Timeout) when is_reference(Ref), is_integer(Timeout) ->
receive
{response, Ref, {ok, Reply}} ->
{ok, Reply};
{response, Ref, {error, Reason}} ->
{error, Reason}
after
Timeout ->
{error, timeout}
end.
%% @doc Spawns the server and registers the local name (unique)
-spec(start_link(RegisterName :: binary(), Host :: string(), Port :: integer()) ->
{ok, Pid :: pid()} | ignore | {error, Reason :: term()}).
start_link(RegisterName, Host, Port) when is_binary(RegisterName), is_list(Host), is_integer(Port) ->
gen_server:start_link({local, ?MODULE}, ?MODULE, [RegisterName, Host, Port], []).
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
%% @private
%% @doc Initializes the server
-spec(init(Args :: term()) ->
{ok, State :: #state{}} | {ok, State :: #state{}, timeout() | hibernate} |
{stop, Reason :: term()} | ignore).
init([RegisterName, Host, Port]) ->
{ok, Socket} = gen_tcp:connect(Host, Port, [binary, {packet, 4}, {active, true}]),
ok = gen_tcp:controlling_process(Socket, self()),
case do_register(RegisterName, Socket) of
ok ->
{ok, #state{packet_id = 1, host = Host, port = Port, socket = Socket}};
{error, Reason} ->
{stop, Reason}
end.
%% 执行到efka服务器的注册
do_register(RegisterName, Socket) ->
PacketId = 0,
Body = #{<<"name">> => RegisterName},
Packet = pack(PacketId, ?PACKET_TYPE_REGISTER, Body),
ok = gen_tcp:send(Socket, Packet),
receive
{tcp, Socket, Data} ->
RegisterPacket = unpack(Data),
lager:debug("[efka_client] get register reply packet: ~p", [RegisterPacket]),
case RegisterPacket of
#efka_packet{packet_id = PacketId, type = ?PACKET_TYPE_RESPONSE, message = #{<<"c">> := 1, <<"r">> := <<"ok">>}} ->
ok;
#efka_packet{packet_id = PacketId, type = ?PACKET_TYPE_RESPONSE, message = #{<<"c">> := 0, <<"e">> := Error}} ->
{error, Error};
_ ->
{error, invalid_register_packet}
end
after
?EFKA_REQUEST_TIMEOUT ->
{error, timeout}
end.
%% @private
%% @doc Handling call messages
-spec(handle_call(Request :: term(), From :: {pid(), Tag :: term()},
State :: #state{}) ->
{reply, Reply :: term(), NewState :: #state{}} |
{reply, Reply :: term(), NewState :: #state{}, timeout() | hibernate} |
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), Reply :: term(), NewState :: #state{}} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_call({send_metric_data, ReceiverPid, Fields, Tags}, _From, State = #state{socket = Socket, packet_id = PacketId, inflight = Inflight}) ->
Body = #{<<"data">> => Fields, <<"tag">> => Tags},
Packet = pack(PacketId, ?PACKET_TYPE_METRIC_DATA, Body),
ok = gen_tcp:send(Socket, Packet),
Ref = make_ref(),
{reply, {ok, Ref}, State#state{packet_id = next_packet_id(PacketId), inflight = maps:put(PacketId, {Ref, ReceiverPid}, Inflight)}};
handle_call({invoke_service, ReceiverPid, ToService, Message, Timeout}, _From, State = #state{socket = Socket, packet_id = PacketId, inflight = Inflight}) ->
Body = #{
<<"to">> => ToService,
<<"t">> => Timeout,
<<"m">> => Message
},
Packet = pack(PacketId, ?PACKET_TYPE_INVOKE, Body),
ok = gen_tcp:send(Socket, Packet),
Ref = make_ref(),
{reply, {ok, Ref}, State#state{packet_id = next_packet_id(PacketId), inflight = maps:put(PacketId, {Ref, ReceiverPid}, Inflight)}};
handle_call({request_metric, ReceiverPid}, _From, State = #state{socket = Socket, packet_id = PacketId, inflight = Inflight}) ->
Packet = pack(PacketId, ?PACKET_TYPE_REQUEST_METRIC),
ok = gen_tcp:send(Socket, Packet),
Ref = make_ref(),
{reply, {ok, Ref}, State#state{packet_id = next_packet_id(PacketId), inflight = maps:put(PacketId, {Ref, ReceiverPid}, Inflight)}};
handle_call({request_param, ReceiverPid}, _From, State = #state{socket = Socket, packet_id = PacketId, inflight = Inflight}) ->
Packet = pack(PacketId, ?PACKET_TYPE_REQUEST_PARAM),
ok = gen_tcp:send(Socket, Packet),
Ref = make_ref(),
{reply, {ok, Ref}, State#state{packet_id = next_packet_id(PacketId), inflight = maps:put(PacketId, {Ref, ReceiverPid}, Inflight)}}.
%% @private
%% @doc Handling cast messages
-spec(handle_cast(Request :: term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_cast({send_log, Message}, State = #state{socket = Socket, packet_id = PacketId}) ->
Body = #{<<"l">> => Message},
Packet = pack(PacketId, ?PACKET_TYPE_LOG, Body),
ok = gen_tcp:send(Socket, Packet),
{noreply, State#state{packet_id = next_packet_id(PacketId)}};
handle_cast({send_event, EventType, Params}, State = #state{socket = Socket}) ->
Body = #{
<<"event_type">> => EventType,
<<"params">> => Params
},
Packet = pack(0, ?PACKET_TYPE_EVENT, Body),
ok = gen_tcp:send(Socket, Packet),
{noreply, State};
handle_cast(_Info, State = #state{}) ->
{noreply, State}.
%% @private
%% @doc Handling all non call/cast messages
-spec(handle_info(Info :: timeout() | term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_info({tcp, Socket, Data}, State = #state{socket = Socket}) ->
Packet = unpack(Data),
self() ! {handle_packet, Packet},
{noreply, State};
handle_info({tcp_closed, Socket}, State = #state{socket = Socket}) ->
{stop, tcp_closed, State};
%% 收到请求的响应
handle_info({handle_packet, #efka_packet{packet_id = PacketId, type = ?PACKET_TYPE_RESPONSE, message = Message}}, State = #state{inflight = Inflight}) ->
case maps:take(PacketId, Inflight) of
error ->
{noreply, State};
{{Ref, ReceiverPid}, NInflight} ->
case Message of
#{<<"c">> := 1, <<"r">> := Result} ->
ReceiverPid ! {response, Ref, {ok, Result}};
#{<<"c">> := 0, <<"e">> := Error} ->
ReceiverPid ! {response, Ref, {error, Error}}
end,
{noreply, State#state{inflight = NInflight}}
end;
%% 收到efka推送的参数设置
handle_info({handle_packet, #efka_packet{packet_id = PacketId, type = ?PACKET_TYPE_PUSH_PARAM, message = Params}},
State = #state{socket = Socket}) when is_map(Params) ->
Message = case handle_param(Params) of
ok ->
#{<<"c">> => 1, <<"r">> => <<"ok">>};
{error, Reason} ->
#{<<"c">> => 0, <<"e">> => Reason}
end,
Packet = pack(PacketId, ?PACKET_TYPE_RESPONSE, Message),
ok = gen_tcp:send(Socket, Packet),
{noreply, State};
%% 收到efka推送的采集项消息
handle_info({handle_packet, #efka_packet{packet_id = PacketId, type = ?PACKET_TYPE_PUSH_METRIC, message = Metrics}},
State = #state{socket = Socket}) when is_list(Metrics) ->
Message = case handle_metric(Metrics) of
ok ->
#{<<"c">> => 1, <<"r">> => <<"ok">>};
{error, Reason} when is_binary(Reason) ->
#{<<"c">> => 0, <<"e">> => Reason}
end,
Packet = pack(PacketId, ?PACKET_TYPE_RESPONSE, Message),
ok = gen_tcp:send(Socket, Packet),
{noreply, State};
%% 收到设备状态的轮询请求
handle_info({handle_packet, #efka_packet{packet_id = PacketId, type = ?PACKET_TYPE_POLL, message = Command}}, State = #state{socket = Socket}) ->
Message = handle_poll_command(Command),
Packet = pack(PacketId, ?PACKET_TYPE_RESPONSE, Message),
ok = gen_tcp:send(Socket, Packet),
{noreply, State};
%% 收到efka的stream-call消息
handle_info({handle_packet, #efka_packet{packet_id = PacketId, type = ?PACKET_TYPE_PUSH_STREAM_CALL,
message = Msg = #{<<"service_name">> := ServiceName, <<"data">> := Data, <<"tag">> := Tag}}}, State = #state{socket = Socket}) ->
Message = case handle_stream_call(ServiceName, Data, Tag) of
{continue, NewServiceName, NewData, NewTag} ->
#{
<<"c">> => 1,
<<"r">> => Msg#{<<"service_name">> := NewServiceName, <<"data">> => NewData, <<"tag">> => NewTag},
<<"k">> => true
};
%% 处理到当前节点为止，不继续往下传递
{break, NewServiceName, NewData, NewTag} ->
#{
<<"c">> => 1,
<<"r">> => Msg#{<<"service_name">> := NewServiceName, <<"data">> => NewData, <<"tag">> => NewTag},
<<"k">> => false
};
error ->
#{
<<"c">> => 0,
<<"r">> => Msg,
<<"k">> => true
}
end,
Packet = pack(PacketId, ?PACKET_TYPE_RESPONSE, Message),
ok = gen_tcp:send(Socket, Packet),
{noreply, State};
%% 其他消息为非法消息
handle_info({handle_packet, _Packet}, State = #state{}) ->
{noreply, State}.
%% @private
%% @doc This function is called by a gen_server when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any
%% necessary cleaning up. When it returns, the gen_server terminates
%% with Reason. The return value is ignored.
-spec(terminate(Reason :: (normal | shutdown | {shutdown, term()} | term()),
State :: #state{}) -> term()).
terminate(_Reason, _State = #state{socket = Socket}) ->
gen_tcp:close(Socket),
ok.
%% @private
%% @doc Convert process state when code is changed
-spec(code_change(OldVsn :: term() | {down, term()}, State :: #state{},
Extra :: term()) ->
{ok, NewState :: #state{}} | {error, Reason :: term()}).
code_change(_OldVsn, State = #state{}, _Extra) ->
{ok, State}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
-spec next_packet_id(PacketId :: integer()) -> NextPacketId :: integer().
next_packet_id(PacketId) when PacketId >= 65535 ->
0;
next_packet_id(PacketId) ->
PacketId + 1.
-spec pack(PacketId :: integer(), Type :: integer()) -> binary().
pack(PacketId, Type) when is_integer(PacketId), is_integer(Type) ->
<<PacketId:16, Type:8>>.
-spec pack(PacketId :: integer(), Type :: integer(), Body :: map()) -> binary().
pack(PacketId, Type, Body) when is_integer(PacketId), is_integer(Type), is_map(Body) ->
Message = iolist_to_binary(jiffy:encode(Body, [force_utf8])),
<<PacketId:16, Type:8, Message/binary>>.
-spec unpack(binary()) -> #efka_packet{}.
unpack(<<PacketId:16, Type:8, Body/binary>>) ->
Message = catch jiffy:decode(Body, [return_maps]),
#efka_packet{packet_id = PacketId, type = Type, message = Message}.
%%%===================================================================
%%% simple callbacks
%%%===================================================================
handle_poll_command(#{<<"device_uuid">> := DeviceUUID, <<"command">> := <<"query_status">>}) when is_binary(DeviceUUID) ->
case power_device:get_pid(DeviceUUID) of
undefined ->
#{
<<"c">> => 1,
<<"r">> => #{
<<"edge_status">> => -1,
<<"message">> => <<"设备信息不存在"/utf8>>
}
};
Pid ->
StatusMap = #{
0 => <<"离线"/utf8>>,
1 => <<"在线"/utf8>>
},
{ok, Status} = power_device:poll_status(Pid),
#{
<<"c">> => 1,
<<"r">> => #{
<<"edge_status">> => Status,
<<"message">> => maps:get(Status, StatusMap)
}
}
end.
-spec handle_param(Params :: map()) -> ok | {error, Reason :: binary()}.
handle_param(Params) when is_map(Params) ->
power_gateway_args:push_param(Params),
ok.
-spec handle_metric(Metric :: list()) -> ok | {error, Reason :: binary()}.
handle_metric(Metric) when is_list(Metric) ->
power_gateway_args:push_metric(Metric),
ok.
-spec handle_stream_call(ServiceName :: binary(), Fields :: list(), Tag :: map()) ->
{continue, NewServiceName :: binary(), NewFields :: list(), NewTag :: map()}
| {break, NewServiceName :: binary(), NewFields :: list(), NewTag :: map()}
| error.
handle_stream_call(ServiceName, Fields, Tag) when is_binary(ServiceName), is_list(Fields), is_map(Tag) ->
{continue, ServiceName, Fields, Tag}.

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%%--------------------------------------------------------------------
%% Copyright (c) 2020 EMQ Technologies Co., Ltd. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%--------------------------------------------------------------------
-module(emqtt_frame).
-include("emqtt.hrl").
-export([initial_parse_state/0, initial_parse_state/1]).
-export([parse/1, parse/2, serialize_fun/0, serialize_fun/1, serialize/1, serialize/2 ]).
-export_type([options/0, parse_state/0, parse_result/0, serialize_fun/0]).
-type(version() :: ?MQTT_PROTO_V3
| ?MQTT_PROTO_V4
| ?MQTT_PROTO_V5).
-type(options() :: #{strict_mode => boolean(),
max_size => 1..?MAX_PACKET_SIZE,
version => version()}).
-opaque(parse_state() :: {none, options()} | cont_fun()).
-opaque(parse_result() :: {more, cont_fun()}
| {ok, #mqtt_packet{}, binary(), parse_state()}).
-type(cont_fun() :: fun((binary()) -> parse_result())).
-type(serialize_fun() :: fun((emqx_types:packet()) -> iodata())).
-define(none(Options), {none, Options}).
-define(DEFAULT_OPTIONS,
#{strict_mode => false,
max_size => ?MAX_PACKET_SIZE,
version => ?MQTT_PROTO_V4
}).
%%--------------------------------------------------------------------
%% Init Parse State
%%--------------------------------------------------------------------
-spec(initial_parse_state() -> {none, options()}).
initial_parse_state() ->
initial_parse_state(#{}).
-spec(initial_parse_state(options()) -> {none, options()}).
initial_parse_state(Options) when is_map(Options) ->
?none(merge_opts(Options)).
%% @pivate
merge_opts(Options) ->
maps:merge(?DEFAULT_OPTIONS, Options).
%%--------------------------------------------------------------------
%% Parse MQTT Frame
%%--------------------------------------------------------------------
-spec(parse(binary()) -> parse_result()).
parse(Bin) ->
parse(Bin, initial_parse_state()).
-spec(parse(binary(), parse_state()) -> parse_result()).
parse(<<>>, {none, Options}) ->
{more, fun(Bin) -> parse(Bin, {none, Options}) end};
parse(<<Type:4, Dup:1, QoS:2, Retain:1, Rest/binary>>,
{none, Options = #{strict_mode := StrictMode}}) ->
%% Validate header if strict mode.
StrictMode andalso validate_header(Type, Dup, QoS, Retain),
Header = #mqtt_packet_header{type = Type,
dup = bool(Dup),
qos = QoS,
retain = bool(Retain)
},
Header1 = case fixqos(Type, QoS) of
QoS -> Header;
FixedQoS -> Header#mqtt_packet_header{qos = FixedQoS}
end,
parse_remaining_len(Rest, Header1, Options);
parse(Bin, Cont) when is_binary(Bin), is_function(Cont) ->
Cont(Bin).
parse_remaining_len(<<>>, Header, Options) ->
{more, fun(Bin) -> parse_remaining_len(Bin, Header, Options) end};
parse_remaining_len(Rest, Header, Options) ->
parse_remaining_len(Rest, Header, 1, 0, Options).
parse_remaining_len(_Bin, _Header, _Multiplier, Length, #{max_size := MaxSize}) when Length > MaxSize ->
error(frame_too_large);
parse_remaining_len(<<>>, Header, Multiplier, Length, Options) ->
{more, fun(Bin) -> parse_remaining_len(Bin, Header, Multiplier, Length, Options) end};
%% Match DISCONNECT without payload
parse_remaining_len(<<0:8, Rest/binary>>, Header = #mqtt_packet_header{type = ?DISCONNECT}, 1, 0, Options) ->
Packet = packet(Header, #mqtt_packet_disconnect{reason_code = ?RC_SUCCESS}),
{ok, Packet, Rest, ?none(Options)};
%% Match PINGREQ.
parse_remaining_len(<<0:8, Rest/binary>>, Header, 1, 0, Options) ->
parse_frame(Rest, Header, 0, Options);
%% Match PUBACK, PUBREC, PUBREL, PUBCOMP, UNSUBACK...
parse_remaining_len(<<0:1, 2:7, Rest/binary>>, Header, 1, 0, Options) ->
parse_frame(Rest, Header, 2, Options);
parse_remaining_len(<<1:1, Len:7, Rest/binary>>, Header, Multiplier, Value, Options) ->
parse_remaining_len(Rest, Header, Multiplier * ?HIGHBIT, Value + Len * Multiplier, Options);
parse_remaining_len(<<0:1, Len:7, Rest/binary>>, Header, Multiplier, Value,
Options = #{max_size := MaxSize}) ->
FrameLen = Value + Len * Multiplier,
if
FrameLen > MaxSize ->
error(frame_too_large);
true ->
parse_frame(Rest, Header, FrameLen, Options)
end.
parse_frame(Bin, Header, 0, Options) ->
{ok, packet(Header), Bin, ?none(Options)};
parse_frame(Bin, Header, Length, Options) ->
case Bin of
<<FrameBin:Length/binary, Rest/binary>> ->
case parse_packet(Header, FrameBin, Options) of
{Variable, Payload} ->
{ok, packet(Header, Variable, Payload), Rest, ?none(Options)};
Variable = #mqtt_packet_connect{proto_ver = Ver} ->
{ok, packet(Header, Variable), Rest, ?none(Options#{version := Ver})};
Variable ->
{ok, packet(Header, Variable), Rest, ?none(Options)}
end;
TooShortBin ->
{more, fun(BinMore) ->
parse_frame(<<TooShortBin/binary, BinMore/binary>>, Header, Length, Options)
end}
end.
-compile({inline, [packet/1, packet/2, packet/3]}).
packet(Header) ->
#mqtt_packet{header = Header}.
packet(Header, Variable) ->
#mqtt_packet{header = Header, variable = Variable}.
packet(Header, Variable, Payload) ->
#mqtt_packet{header = Header, variable = Variable, payload = Payload}.
parse_packet(#mqtt_packet_header{type = ?CONNECT}, FrameBin, _Options) ->
{ProtoName, Rest} = parse_utf8_string(FrameBin),
<<BridgeTag:4, ProtoVer:4, Rest1/binary>> = Rest,
% Note: Crash when reserved flag doesn't equal to 0, there is no strict
% compliance with the MQTT5.0.
<<UsernameFlag : 1,
PasswordFlag : 1,
WillRetain : 1,
WillQoS : 2,
WillFlag : 1,
CleanStart : 1,
0 : 1,
KeepAlive : 16/big,
Rest2/binary>> = Rest1,
{Properties, Rest3} = parse_properties(Rest2, ProtoVer),
{ClientId, Rest4} = parse_utf8_string(Rest3),
ConnPacket = #mqtt_packet_connect{proto_name = ProtoName,
proto_ver = ProtoVer,
is_bridge = (BridgeTag =:= 8),
clean_start = bool(CleanStart),
will_flag = bool(WillFlag),
will_qos = WillQoS,
will_retain = bool(WillRetain),
keepalive = KeepAlive,
properties = Properties,
clientid = ClientId
},
{ConnPacket1, Rest5} = parse_will_message(ConnPacket, Rest4),
{Username, Rest6} = parse_utf8_string(Rest5, bool(UsernameFlag)),
{Passsword, <<>>} = parse_utf8_string(Rest6, bool(PasswordFlag)),
ConnPacket1#mqtt_packet_connect{username = Username, password = Passsword};
parse_packet(#mqtt_packet_header{type = ?CONNACK},
<<AckFlags:8, ReasonCode:8, Rest/binary>>, #{version := Ver}) ->
{Properties, <<>>} = parse_properties(Rest, Ver),
#mqtt_packet_connack{ack_flags = AckFlags,
reason_code = ReasonCode,
properties = Properties
};
parse_packet(#mqtt_packet_header{type = ?PUBLISH, qos = QoS}, Bin,
#{strict_mode := StrictMode, version := Ver}) ->
{TopicName, Rest} = parse_utf8_string(Bin),
{PacketId, Rest1} = case QoS of
?QOS_0 -> {undefined, Rest};
_ -> parse_packet_id(Rest)
end,
(PacketId =/= undefined) andalso
StrictMode andalso validate_packet_id(PacketId),
{Properties, Payload} = parse_properties(Rest1, Ver),
Publish = #mqtt_packet_publish{topic_name = TopicName,
packet_id = PacketId,
properties = Properties
},
{Publish, Payload};
parse_packet(#mqtt_packet_header{type = PubAck}, <<PacketId:16/big>>, #{strict_mode := StrictMode})
when ?PUBACK =< PubAck, PubAck =< ?PUBCOMP ->
StrictMode andalso validate_packet_id(PacketId),
#mqtt_packet_puback{packet_id = PacketId, reason_code = 0};
parse_packet(#mqtt_packet_header{type = PubAck}, <<PacketId:16/big, ReasonCode, Rest/binary>>,
#{strict_mode := StrictMode, version := Ver = ?MQTT_PROTO_V5})
when ?PUBACK =< PubAck, PubAck =< ?PUBCOMP ->
StrictMode andalso validate_packet_id(PacketId),
{Properties, <<>>} = parse_properties(Rest, Ver),
#mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode,
properties = Properties
};
parse_packet(#mqtt_packet_header{type = ?SUBSCRIBE}, <<PacketId:16/big, Rest/binary>>,
#{strict_mode := StrictMode, version := Ver}) ->
StrictMode andalso validate_packet_id(PacketId),
{Properties, Rest1} = parse_properties(Rest, Ver),
TopicFilters = parse_topic_filters(subscribe, Rest1),
ok = validate_subqos([QoS || {_, #{qos := QoS}} <- TopicFilters]),
#mqtt_packet_subscribe{packet_id = PacketId,
properties = Properties,
topic_filters = TopicFilters
};
parse_packet(#mqtt_packet_header{type = ?SUBACK}, <<PacketId:16/big, Rest/binary>>,
#{strict_mode := StrictMode, version := Ver}) ->
StrictMode andalso validate_packet_id(PacketId),
{Properties, Rest1} = parse_properties(Rest, Ver),
ReasonCodes = parse_reason_codes(Rest1),
#mqtt_packet_suback{packet_id = PacketId,
properties = Properties,
reason_codes = ReasonCodes
};
parse_packet(#mqtt_packet_header{type = ?UNSUBSCRIBE}, <<PacketId:16/big, Rest/binary>>,
#{strict_mode := StrictMode, version := Ver}) ->
StrictMode andalso validate_packet_id(PacketId),
{Properties, Rest1} = parse_properties(Rest, Ver),
TopicFilters = parse_topic_filters(unsubscribe, Rest1),
#mqtt_packet_unsubscribe{packet_id = PacketId,
properties = Properties,
topic_filters = TopicFilters
};
parse_packet(#mqtt_packet_header{type = ?UNSUBACK}, <<PacketId:16/big>>,
#{strict_mode := StrictMode}) ->
StrictMode andalso validate_packet_id(PacketId),
#mqtt_packet_unsuback{packet_id = PacketId};
parse_packet(#mqtt_packet_header{type = ?UNSUBACK}, <<PacketId:16/big, Rest/binary>>,
#{strict_mode := StrictMode, version := Ver}) ->
StrictMode andalso validate_packet_id(PacketId),
{Properties, Rest1} = parse_properties(Rest, Ver),
ReasonCodes = parse_reason_codes(Rest1),
#mqtt_packet_unsuback{packet_id = PacketId,
properties = Properties,
reason_codes = ReasonCodes
};
parse_packet(#mqtt_packet_header{type = ?DISCONNECT}, <<ReasonCode, Rest/binary>>,
#{version := ?MQTT_PROTO_V5}) ->
{Properties, <<>>} = parse_properties(Rest, ?MQTT_PROTO_V5),
#mqtt_packet_disconnect{reason_code = ReasonCode,
properties = Properties
};
parse_packet(#mqtt_packet_header{type = ?AUTH}, <<ReasonCode, Rest/binary>>,
#{version := ?MQTT_PROTO_V5}) ->
{Properties, <<>>} = parse_properties(Rest, ?MQTT_PROTO_V5),
#mqtt_packet_auth{reason_code = ReasonCode, properties = Properties}.
parse_will_message(Packet = #mqtt_packet_connect{will_flag = true,
proto_ver = Ver}, Bin) ->
{Props, Rest} = parse_properties(Bin, Ver),
{Topic, Rest1} = parse_utf8_string(Rest),
{Payload, Rest2} = parse_binary_data(Rest1),
{Packet#mqtt_packet_connect{will_props = Props,
will_topic = Topic,
will_payload = Payload
}, Rest2};
parse_will_message(Packet, Bin) -> {Packet, Bin}.
-compile({inline, [parse_packet_id/1]}).
parse_packet_id(<<PacketId:16/big, Rest/binary>>) ->
{PacketId, Rest}.
parse_properties(Bin, Ver) when Ver =/= ?MQTT_PROTO_V5 ->
{undefined, Bin};
%% TODO: version mess?
parse_properties(<<>>, ?MQTT_PROTO_V5) ->
{#{}, <<>>};
parse_properties(<<0, Rest/binary>>, ?MQTT_PROTO_V5) ->
{#{}, Rest};
parse_properties(Bin, ?MQTT_PROTO_V5) ->
{Len, Rest} = parse_variable_byte_integer(Bin),
<<PropsBin:Len/binary, Rest1/binary>> = Rest,
{parse_property(PropsBin, #{}), Rest1}.
parse_property(<<>>, Props) ->
Props;
parse_property(<<16#01, Val, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Payload-Format-Indicator' => Val});
parse_property(<<16#02, Val:32/big, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Message-Expiry-Interval' => Val});
parse_property(<<16#03, Bin/binary>>, Props) ->
{Val, Rest} = parse_utf8_string(Bin),
parse_property(Rest, Props#{'Content-Type' => Val});
parse_property(<<16#08, Bin/binary>>, Props) ->
{Val, Rest} = parse_utf8_string(Bin),
parse_property(Rest, Props#{'Response-Topic' => Val});
parse_property(<<16#09, Len:16/big, Val:Len/binary, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Correlation-Data' => Val});
parse_property(<<16#0B, Bin/binary>>, Props) ->
{Val, Rest} = parse_variable_byte_integer(Bin),
parse_property(Rest, Props#{'Subscription-Identifier' => Val});
parse_property(<<16#11, Val:32/big, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Session-Expiry-Interval' => Val});
parse_property(<<16#12, Bin/binary>>, Props) ->
{Val, Rest} = parse_utf8_string(Bin),
parse_property(Rest, Props#{'Assigned-Client-Identifier' => Val});
parse_property(<<16#13, Val:16, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Server-Keep-Alive' => Val});
parse_property(<<16#15, Bin/binary>>, Props) ->
{Val, Rest} = parse_utf8_string(Bin),
parse_property(Rest, Props#{'Authentication-Method' => Val});
parse_property(<<16#16, Len:16/big, Val:Len/binary, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Authentication-Data' => Val});
parse_property(<<16#17, Val, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Request-Problem-Information' => Val});
parse_property(<<16#18, Val:32, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Will-Delay-Interval' => Val});
parse_property(<<16#19, Val, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Request-Response-Information' => Val});
parse_property(<<16#1A, Bin/binary>>, Props) ->
{Val, Rest} = parse_utf8_string(Bin),
parse_property(Rest, Props#{'Response-Information' => Val});
parse_property(<<16#1C, Bin/binary>>, Props) ->
{Val, Rest} = parse_utf8_string(Bin),
parse_property(Rest, Props#{'Server-Reference' => Val});
parse_property(<<16#1F, Bin/binary>>, Props) ->
{Val, Rest} = parse_utf8_string(Bin),
parse_property(Rest, Props#{'Reason-String' => Val});
parse_property(<<16#21, Val:16/big, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Receive-Maximum' => Val});
parse_property(<<16#22, Val:16/big, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Topic-Alias-Maximum' => Val});
parse_property(<<16#23, Val:16/big, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Topic-Alias' => Val});
parse_property(<<16#24, Val, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Maximum-QoS' => Val});
parse_property(<<16#25, Val, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Retain-Available' => Val});
parse_property(<<16#26, Bin/binary>>, Props) ->
{Pair, Rest} = parse_utf8_pair(Bin),
case maps:find('User-Property', Props) of
{ok, UserProps} ->
UserProps1 = lists:append(UserProps, [Pair]),
parse_property(Rest, Props#{'User-Property' := UserProps1});
error ->
parse_property(Rest, Props#{'User-Property' => [Pair]})
end;
parse_property(<<16#27, Val:32, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Maximum-Packet-Size' => Val});
parse_property(<<16#28, Val, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Wildcard-Subscription-Available' => Val});
parse_property(<<16#29, Val, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Subscription-Identifier-Available' => Val});
parse_property(<<16#2A, Val, Bin/binary>>, Props) ->
parse_property(Bin, Props#{'Shared-Subscription-Available' => Val}).
parse_variable_byte_integer(Bin) ->
parse_variable_byte_integer(Bin, 1, 0).
parse_variable_byte_integer(<<1:1, Len:7, Rest/binary>>, Multiplier, Value) ->
parse_variable_byte_integer(Rest, Multiplier * ?HIGHBIT, Value + Len * Multiplier);
parse_variable_byte_integer(<<0:1, Len:7, Rest/binary>>, Multiplier, Value) ->
{Value + Len * Multiplier, Rest}.
parse_topic_filters(subscribe, Bin) ->
[{Topic, #{rh => Rh, rap => Rap, nl => Nl, qos => QoS}}
|| <<Len:16/big, Topic:Len/binary, _:2, Rh:2, Rap:1, Nl:1, QoS:2>> <= Bin];
parse_topic_filters(unsubscribe, Bin) ->
[Topic || <<Len:16/big, Topic:Len/binary>> <= Bin].
parse_reason_codes(Bin) ->
[Code || <<Code>> <= Bin].
parse_utf8_pair(<<Len1:16/big, Key:Len1/binary,
Len2:16/big, Val:Len2/binary, Rest/binary>>) ->
{{Key, Val}, Rest}.
parse_utf8_string(Bin, false) ->
{undefined, Bin};
parse_utf8_string(Bin, true) ->
parse_utf8_string(Bin).
parse_utf8_string(<<Len:16/big, Str:Len/binary, Rest/binary>>) ->
{Str, Rest}.
parse_binary_data(<<Len:16/big, Data:Len/binary, Rest/binary>>) ->
{Data, Rest}.
%%--------------------------------------------------------------------
%% Serialize MQTT Packet
%%--------------------------------------------------------------------
serialize_fun() -> serialize_fun(?DEFAULT_OPTIONS).
serialize_fun(#mqtt_packet_connect{proto_ver = ProtoVer, properties = ConnProps}) ->
MaxSize = get_property('Maximum-Packet-Size', ConnProps, ?MAX_PACKET_SIZE),
serialize_fun(#{version => ProtoVer, max_size => MaxSize});
serialize_fun(#{version := Ver, max_size := MaxSize}) ->
fun(Packet) ->
IoData = serialize(Packet, Ver),
case is_too_large(IoData, MaxSize) of
true -> <<>>;
false -> IoData
end
end.
-spec(serialize(#mqtt_packet{}) -> iodata()).
serialize(Packet) -> serialize(Packet, ?MQTT_PROTO_V4).
-spec(serialize(#mqtt_packet{}, version()) -> iodata()).
serialize(#mqtt_packet{header = Header,
variable = Variable,
payload = Payload}, Ver) ->
serialize(Header, serialize_variable(Variable, Ver), serialize_payload(Payload)).
serialize(#mqtt_packet_header{type = Type,
dup = Dup,
qos = QoS,
retain = Retain
}, VariableBin, PayloadBin)
when ?CONNECT =< Type andalso Type =< ?AUTH ->
Len = iolist_size(VariableBin) + iolist_size(PayloadBin),
[<<Type:4, (flag(Dup)):1, (flag(QoS)):2, (flag(Retain)):1>>,
serialize_remaining_len(Len), VariableBin, PayloadBin].
serialize_variable(#mqtt_packet_connect{
proto_name = ProtoName,
proto_ver = ProtoVer,
is_bridge = IsBridge,
clean_start = CleanStart,
will_flag = WillFlag,
will_qos = WillQoS,
will_retain = WillRetain,
keepalive = KeepAlive,
properties = Properties,
clientid = ClientId,
will_props = WillProps,
will_topic = WillTopic,
will_payload = WillPayload,
username = Username,
password = Password}, _Ver) ->
[serialize_binary_data(ProtoName),
<<(case IsBridge of
true -> 16#80 + ProtoVer;
false -> ProtoVer
end):8,
(flag(Username)):1,
(flag(Password)):1,
(flag(WillRetain)):1,
WillQoS:2,
(flag(WillFlag)):1,
(flag(CleanStart)):1,
0:1,
KeepAlive:16/big-unsigned-integer>>,
serialize_properties(Properties, ProtoVer),
serialize_utf8_string(ClientId),
case WillFlag of
true -> [serialize_properties(WillProps, ProtoVer),
serialize_utf8_string(WillTopic),
serialize_binary_data(WillPayload)];
false -> <<>>
end,
serialize_utf8_string(Username, true),
serialize_utf8_string(Password, true)];
serialize_variable(#mqtt_packet_connack{ack_flags = AckFlags,
reason_code = ReasonCode,
properties = Properties}, Ver) ->
[AckFlags, ReasonCode, serialize_properties(Properties, Ver)];
serialize_variable(#mqtt_packet_publish{topic_name = TopicName,
packet_id = PacketId,
properties = Properties}, Ver) ->
[serialize_utf8_string(TopicName),
if
PacketId =:= undefined -> <<>>;
true -> <<PacketId:16/big-unsigned-integer>>
end,
serialize_properties(Properties, Ver)];
serialize_variable(#mqtt_packet_puback{packet_id = PacketId}, Ver)
when Ver == ?MQTT_PROTO_V3; Ver == ?MQTT_PROTO_V4 ->
<<PacketId:16/big-unsigned-integer>>;
serialize_variable(#mqtt_packet_puback{packet_id = PacketId,
reason_code = ReasonCode,
properties = Properties
},
Ver = ?MQTT_PROTO_V5) ->
[<<PacketId:16/big-unsigned-integer>>, ReasonCode,
serialize_properties(Properties, Ver)];
serialize_variable(#mqtt_packet_subscribe{packet_id = PacketId,
properties = Properties,
topic_filters = TopicFilters}, Ver) ->
[<<PacketId:16/big-unsigned-integer>>, serialize_properties(Properties, Ver),
serialize_topic_filters(subscribe, TopicFilters, Ver)];
serialize_variable(#mqtt_packet_suback{packet_id = PacketId,
properties = Properties,
reason_codes = ReasonCodes}, Ver) ->
[<<PacketId:16/big-unsigned-integer>>, serialize_properties(Properties, Ver),
serialize_reason_codes(ReasonCodes)];
serialize_variable(#mqtt_packet_unsubscribe{packet_id = PacketId,
properties = Properties,
topic_filters = TopicFilters}, Ver) ->
[<<PacketId:16/big-unsigned-integer>>, serialize_properties(Properties, Ver),
serialize_topic_filters(unsubscribe, TopicFilters, Ver)];
serialize_variable(#mqtt_packet_unsuback{packet_id = PacketId,
properties = Properties,
reason_codes = ReasonCodes}, Ver) ->
[<<PacketId:16/big-unsigned-integer>>, serialize_properties(Properties, Ver),
serialize_reason_codes(ReasonCodes)];
serialize_variable(#mqtt_packet_disconnect{}, Ver)
when Ver == ?MQTT_PROTO_V3; Ver == ?MQTT_PROTO_V4 ->
<<>>;
serialize_variable(#mqtt_packet_disconnect{reason_code = ReasonCode,
properties = Properties},
Ver = ?MQTT_PROTO_V5) ->
[ReasonCode, serialize_properties(Properties, Ver)];
serialize_variable(#mqtt_packet_disconnect{}, _Ver) ->
<<>>;
serialize_variable(#mqtt_packet_auth{reason_code = ReasonCode,
properties = Properties},
Ver = ?MQTT_PROTO_V5) ->
[ReasonCode, serialize_properties(Properties, Ver)];
serialize_variable(PacketId, ?MQTT_PROTO_V3) when is_integer(PacketId) ->
<<PacketId:16/big-unsigned-integer>>;
serialize_variable(PacketId, ?MQTT_PROTO_V4) when is_integer(PacketId) ->
<<PacketId:16/big-unsigned-integer>>;
serialize_variable(undefined, _Ver) ->
<<>>.
serialize_payload(undefined) -> <<>>;
serialize_payload(Bin) -> Bin.
serialize_properties(_Props, Ver) when Ver =/= ?MQTT_PROTO_V5 ->
<<>>;
serialize_properties(Props, ?MQTT_PROTO_V5) ->
serialize_properties(Props).
serialize_properties(undefined) ->
<<0>>;
serialize_properties(Props) when map_size(Props) == 0 ->
<<0>>;
serialize_properties(Props) when is_map(Props) ->
Bin = << <<(serialize_property(Prop, Val))/binary>> || {Prop, Val} <- maps:to_list(Props) >>,
[serialize_variable_byte_integer(byte_size(Bin)), Bin].
serialize_property(_, undefined) ->
<<>>;
serialize_property('Payload-Format-Indicator', Val) ->
<<16#01, Val>>;
serialize_property('Message-Expiry-Interval', Val) ->
<<16#02, Val:32/big>>;
serialize_property('Content-Type', Val) ->
<<16#03, (serialize_utf8_string(Val))/binary>>;
serialize_property('Response-Topic', Val) ->
<<16#08, (serialize_utf8_string(Val))/binary>>;
serialize_property('Correlation-Data', Val) ->
<<16#09, (byte_size(Val)):16, Val/binary>>;
serialize_property('Subscription-Identifier', Val) ->
<<16#0B, (serialize_variable_byte_integer(Val))/binary>>;
serialize_property('Session-Expiry-Interval', Val) ->
<<16#11, Val:32/big>>;
serialize_property('Assigned-Client-Identifier', Val) ->
<<16#12, (serialize_utf8_string(Val))/binary>>;
serialize_property('Server-Keep-Alive', Val) ->
<<16#13, Val:16/big>>;
serialize_property('Authentication-Method', Val) ->
<<16#15, (serialize_utf8_string(Val))/binary>>;
serialize_property('Authentication-Data', Val) ->
<<16#16, (iolist_size(Val)):16, Val/binary>>;
serialize_property('Request-Problem-Information', Val) ->
<<16#17, Val>>;
serialize_property('Will-Delay-Interval', Val) ->
<<16#18, Val:32/big>>;
serialize_property('Request-Response-Information', Val) ->
<<16#19, Val>>;
serialize_property('Response-Information', Val) ->
<<16#1A, (serialize_utf8_string(Val))/binary>>;
serialize_property('Server-Reference', Val) ->
<<16#1C, (serialize_utf8_string(Val))/binary>>;
serialize_property('Reason-String', Val) ->
<<16#1F, (serialize_utf8_string(Val))/binary>>;
serialize_property('Receive-Maximum', Val) ->
<<16#21, Val:16/big>>;
serialize_property('Topic-Alias-Maximum', Val) ->
<<16#22, Val:16/big>>;
serialize_property('Topic-Alias', Val) ->
<<16#23, Val:16/big>>;
serialize_property('Maximum-QoS', Val) ->
<<16#24, Val>>;
serialize_property('Retain-Available', Val) ->
<<16#25, Val>>;
serialize_property('User-Property', {Key, Val}) ->
<<16#26, (serialize_utf8_pair({Key, Val}))/binary>>;
serialize_property('User-Property', Props) when is_list(Props) ->
<< <<(serialize_property('User-Property', {Key, Val}))/binary>>
|| {Key, Val} <- Props >>;
serialize_property('Maximum-Packet-Size', Val) ->
<<16#27, Val:32/big>>;
serialize_property('Wildcard-Subscription-Available', Val) ->
<<16#28, Val>>;
serialize_property('Subscription-Identifier-Available', Val) ->
<<16#29, Val>>;
serialize_property('Shared-Subscription-Available', Val) ->
<<16#2A, Val>>.
serialize_topic_filters(subscribe, TopicFilters, ?MQTT_PROTO_V5) ->
<< <<(serialize_utf8_string(Topic))/binary,
?RESERVED:2, Rh:2, (flag(Rap)):1,(flag(Nl)):1, QoS:2 >>
|| {Topic, #{rh := Rh, rap := Rap, nl := Nl, qos := QoS}} <- TopicFilters >>;
serialize_topic_filters(subscribe, TopicFilters, _Ver) ->
<< <<(serialize_utf8_string(Topic))/binary, ?RESERVED:6, QoS:2>>
|| {Topic, #{qos := QoS}} <- TopicFilters >>;
serialize_topic_filters(unsubscribe, TopicFilters, _Ver) ->
<< <<(serialize_utf8_string(Topic))/binary>> || Topic <- TopicFilters >>.
serialize_reason_codes(undefined) ->
<<>>;
serialize_reason_codes(ReasonCodes) when is_list(ReasonCodes) ->
<< <<Code>> || Code <- ReasonCodes >>.
serialize_utf8_pair({Name, Value}) ->
<< (serialize_utf8_string(Name))/binary, (serialize_utf8_string(Value))/binary >>.
serialize_binary_data(Bin) ->
[<<(byte_size(Bin)):16/big-unsigned-integer>>, Bin].
serialize_utf8_string(undefined, false) ->
error(utf8_string_undefined);
serialize_utf8_string(undefined, true) ->
<<>>;
serialize_utf8_string(String, _AllowNull) ->
serialize_utf8_string(String).
serialize_utf8_string(String) ->
StringBin = unicode:characters_to_binary(String),
Len = byte_size(StringBin),
true = (Len =< 16#ffff),
<<Len:16/big, StringBin/binary>>.
serialize_remaining_len(I) ->
serialize_variable_byte_integer(I).
serialize_variable_byte_integer(N) when N =< ?LOWBITS ->
<<0:1, N:7>>;
serialize_variable_byte_integer(N) ->
<<1:1, (N rem ?HIGHBIT):7, (serialize_variable_byte_integer(N div ?HIGHBIT))/binary>>.
%% Is the frame too large?
-spec(is_too_large(iodata(), pos_integer()) -> boolean()).
is_too_large(IoData, MaxSize) ->
iolist_size(IoData) >= MaxSize.
get_property(_Key, undefined, Default) ->
Default;
get_property(Key, Props, Default) ->
maps:get(Key, Props, Default).
%% Validate header if sctrict mode. See: mqtt-v5.0: 2.1.3 Flags
validate_header(?CONNECT, 0, 0, 0) -> ok;
validate_header(?CONNACK, 0, 0, 0) -> ok;
validate_header(?PUBLISH, 0, ?QOS_0, _) -> ok;
validate_header(?PUBLISH, _, ?QOS_1, _) -> ok;
validate_header(?PUBLISH, 0, ?QOS_2, _) -> ok;
validate_header(?PUBACK, 0, 0, 0) -> ok;
validate_header(?PUBREC, 0, 0, 0) -> ok;
validate_header(?PUBREL, 0, 1, 0) -> ok;
validate_header(?PUBCOMP, 0, 0, 0) -> ok;
validate_header(?SUBSCRIBE, 0, 1, 0) -> ok;
validate_header(?SUBACK, 0, 0, 0) -> ok;
validate_header(?UNSUBSCRIBE, 0, 1, 0) -> ok;
validate_header(?UNSUBACK, 0, 0, 0) -> ok;
validate_header(?PINGREQ, 0, 0, 0) -> ok;
validate_header(?PINGRESP, 0, 0, 0) -> ok;
validate_header(?DISCONNECT, 0, 0, 0) -> ok;
validate_header(?AUTH, 0, 0, 0) -> ok;
validate_header(_Type, _Dup, _QoS, _Rt) -> error(bad_frame_header).
-compile({inline, [validate_packet_id/1]}).
validate_packet_id(0) -> error(bad_packet_id);
validate_packet_id(_) -> ok.
validate_subqos([3|_]) -> error(bad_subqos);
validate_subqos([_|T]) -> validate_subqos(T);
validate_subqos([]) -> ok.
bool(0) -> false;
bool(1) -> true.
flag(undefined) -> ?RESERVED;
flag(false) -> 0;
flag(true) -> 1;
flag(X) when is_integer(X) -> X;
flag(B) when is_binary(B) -> 1.
fixqos(?PUBREL, 0) -> 1;
fixqos(?SUBSCRIBE, 0) -> 1;
fixqos(?UNSUBSCRIBE, 0) -> 1;
fixqos(_Type, QoS) -> QoS.

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%%--------------------------------------------------------------------
%% Copyright (c) 2020 EMQ Technologies Co., Ltd. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%--------------------------------------------------------------------
%% @doc MQTT5 Properties
-module(emqtt_props).
-include("emqtt.hrl").
-export([id/1, name/1, filter/2, validate/1]).
%% For tests
-export([all/0]).
-type(prop_name() :: atom()).
-type(prop_id() :: pos_integer()).
-define(PROPS_TABLE,
#{16#01 => {'Payload-Format-Indicator', 'Byte', [?PUBLISH]},
16#02 => {'Message-Expiry-Interval', 'Four-Byte-Integer', [?PUBLISH]},
16#03 => {'Content-Type', 'UTF8-Encoded-String', [?PUBLISH]},
16#08 => {'Response-Topic', 'UTF8-Encoded-String', [?PUBLISH]},
16#09 => {'Correlation-Data', 'Binary-Data', [?PUBLISH]},
16#0B => {'Subscription-Identifier', 'Variable-Byte-Integer', [?PUBLISH, ?SUBSCRIBE]},
16#11 => {'Session-Expiry-Interval', 'Four-Byte-Integer', [?CONNECT, ?CONNACK, ?DISCONNECT]},
16#12 => {'Assigned-Client-Identifier', 'UTF8-Encoded-String', [?CONNACK]},
16#13 => {'Server-Keep-Alive', 'Two-Byte-Integer', [?CONNACK]},
16#15 => {'Authentication-Method', 'UTF8-Encoded-String', [?CONNECT, ?CONNACK, ?AUTH]},
16#16 => {'Authentication-Data', 'Binary-Data', [?CONNECT, ?CONNACK, ?AUTH]},
16#17 => {'Request-Problem-Information', 'Byte', [?CONNECT]},
16#18 => {'Will-Delay-Interval', 'Four-Byte-Integer', ['WILL']},
16#19 => {'Request-Response-Information', 'Byte', [?CONNECT]},
16#1A => {'Response-Information', 'UTF8-Encoded-String', [?CONNACK]},
16#1C => {'Server-Reference', 'UTF8-Encoded-String', [?CONNACK, ?DISCONNECT]},
16#1F => {'Reason-String', 'UTF8-Encoded-String', [?CONNACK, ?DISCONNECT, ?PUBACK,
?PUBREC, ?PUBREL, ?PUBCOMP,
?SUBACK, ?UNSUBACK, ?AUTH]},
16#21 => {'Receive-Maximum', 'Two-Byte-Integer', [?CONNECT, ?CONNACK]},
16#22 => {'Topic-Alias-Maximum', 'Two-Byte-Integer', [?CONNECT, ?CONNACK]},
16#23 => {'Topic-Alias', 'Two-Byte-Integer', [?PUBLISH]},
16#24 => {'Maximum-QoS', 'Byte', [?CONNACK]},
16#25 => {'Retain-Available', 'Byte', [?CONNACK]},
16#26 => {'User-Property', 'UTF8-String-Pair', 'ALL'},
16#27 => {'Maximum-Packet-Size', 'Four-Byte-Integer', [?CONNECT, ?CONNACK]},
16#28 => {'Wildcard-Subscription-Available', 'Byte', [?CONNACK]},
16#29 => {'Subscription-Identifier-Available', 'Byte', [?CONNACK]},
16#2A => {'Shared-Subscription-Available', 'Byte', [?CONNACK]}
}).
-spec(id(prop_name()) -> prop_id()).
id('Payload-Format-Indicator') -> 16#01;
id('Message-Expiry-Interval') -> 16#02;
id('Content-Type') -> 16#03;
id('Response-Topic') -> 16#08;
id('Correlation-Data') -> 16#09;
id('Subscription-Identifier') -> 16#0B;
id('Session-Expiry-Interval') -> 16#11;
id('Assigned-Client-Identifier') -> 16#12;
id('Server-Keep-Alive') -> 16#13;
id('Authentication-Method') -> 16#15;
id('Authentication-Data') -> 16#16;
id('Request-Problem-Information') -> 16#17;
id('Will-Delay-Interval') -> 16#18;
id('Request-Response-Information') -> 16#19;
id('Response-Information') -> 16#1A;
id('Server-Reference') -> 16#1C;
id('Reason-String') -> 16#1F;
id('Receive-Maximum') -> 16#21;
id('Topic-Alias-Maximum') -> 16#22;
id('Topic-Alias') -> 16#23;
id('Maximum-QoS') -> 16#24;
id('Retain-Available') -> 16#25;
id('User-Property') -> 16#26;
id('Maximum-Packet-Size') -> 16#27;
id('Wildcard-Subscription-Available') -> 16#28;
id('Subscription-Identifier-Available') -> 16#29;
id('Shared-Subscription-Available') -> 16#2A;
id(Name) -> error({bad_property, Name}).
-spec(name(prop_id()) -> prop_name()).
name(16#01) -> 'Payload-Format-Indicator';
name(16#02) -> 'Message-Expiry-Interval';
name(16#03) -> 'Content-Type';
name(16#08) -> 'Response-Topic';
name(16#09) -> 'Correlation-Data';
name(16#0B) -> 'Subscription-Identifier';
name(16#11) -> 'Session-Expiry-Interval';
name(16#12) -> 'Assigned-Client-Identifier';
name(16#13) -> 'Server-Keep-Alive';
name(16#15) -> 'Authentication-Method';
name(16#16) -> 'Authentication-Data';
name(16#17) -> 'Request-Problem-Information';
name(16#18) -> 'Will-Delay-Interval';
name(16#19) -> 'Request-Response-Information';
name(16#1A) -> 'Response-Information';
name(16#1C) -> 'Server-Reference';
name(16#1F) -> 'Reason-String';
name(16#21) -> 'Receive-Maximum';
name(16#22) -> 'Topic-Alias-Maximum';
name(16#23) -> 'Topic-Alias';
name(16#24) -> 'Maximum-QoS';
name(16#25) -> 'Retain-Available';
name(16#26) -> 'User-Property';
name(16#27) -> 'Maximum-Packet-Size';
name(16#28) -> 'Wildcard-Subscription-Available';
name(16#29) -> 'Subscription-Identifier-Available';
name(16#2A) -> 'Shared-Subscription-Available';
name(Id) -> error({unsupported_property, Id}).
filter(PacketType, Props) when is_map(Props) ->
maps:from_list(filter(PacketType, maps:to_list(Props)));
filter(PacketType, Props) when ?CONNECT =< PacketType, PacketType =< ?AUTH, is_list(Props) ->
Filter = fun(Name) ->
case maps:find(id(Name), ?PROPS_TABLE) of
{ok, {Name, _Type, 'ALL'}} ->
true;
{ok, {Name, _Type, AllowedTypes}} ->
lists:member(PacketType, AllowedTypes);
error -> false
end
end,
[Prop || Prop = {Name, _} <- Props, Filter(Name)].
validate(Props) when is_map(Props) ->
lists:foreach(fun validate_prop/1, maps:to_list(Props)).
validate_prop(Prop = {Name, Val}) ->
case maps:find(id(Name), ?PROPS_TABLE) of
{ok, {Name, Type, _}} ->
validate_value(Type, Val)
orelse error(bad_property, Prop);
error ->
error({bad_property, Prop})
end.
validate_value('Byte', Val) ->
is_integer(Val) andalso Val =< 16#FF;
validate_value('Two-Byte-Integer', Val) ->
is_integer(Val) andalso 0 =< Val andalso Val =< 16#FFFF;
validate_value('Four-Byte-Integer', Val) ->
is_integer(Val) andalso 0 =< Val andalso Val =< 16#FFFFFFFF;
validate_value('Variable-Byte-Integer', Val) ->
is_integer(Val) andalso 0 =< Val andalso Val =< 16#7FFFFFFF;
validate_value('UTF8-String-Pair', {Name, Val}) ->
validate_value('UTF8-Encoded-String', Name)
andalso validate_value('UTF8-Encoded-String', Val);
validate_value('UTF8-String-Pair', Pairs) when is_list(Pairs) ->
lists:foldl(fun(Pair, OK) ->
OK andalso validate_value('UTF8-String-Pair', Pair)
end, true, Pairs);
validate_value('UTF8-Encoded-String', Val) ->
is_binary(Val);
validate_value('Binary-Data', Val) ->
is_binary(Val);
validate_value(_Type, _Val) -> false.
-spec(all() -> map()).
all() -> ?PROPS_TABLE.

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%%--------------------------------------------------------------------
%% Copyright (c) 2020 EMQ Technologies Co., Ltd. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%--------------------------------------------------------------------
-module(emqtt_sock).
-export([connect/4, send/2, recv/2, close/1 ]).
-export([ sockname/1, setopts/2, getstat/2 ]).
-record(ssl_socket, {
tcp,
ssl
}).
-type(socket() :: inet:socket() | #ssl_socket{}).
-type(sockname() :: {inet:ip_address(), inet:port_number()}).
-type(option() :: gen_tcp:connect_option() | {ssl_opts, [ssl:ssl_option()]}).
-export_type([socket/0, option/0]).
-define(DEFAULT_TCP_OPTIONS, [binary, {packet, raw}, {active, false},
{nodelay, true}]).
-spec(connect(inet:ip_address() | inet:hostname(),
inet:port_number(), [option()], timeout())
-> {ok, socket()} | {error, term()}).
connect(Host, Port, SockOpts, Timeout) ->
TcpOpts = merge_opts(?DEFAULT_TCP_OPTIONS,
lists:keydelete(ssl_opts, 1, SockOpts)),
case gen_tcp:connect(Host, Port, TcpOpts, Timeout) of
{ok, Sock} ->
case lists:keyfind(ssl_opts, 1, SockOpts) of
{ssl_opts, SslOpts} ->
ssl_upgrade(Sock, SslOpts, Timeout);
false ->
{ok, Sock}
end;
{error, Reason} ->
{error, Reason}
end.
ssl_upgrade(Sock, SslOpts, Timeout) ->
TlsVersions = proplists:get_value(versions, SslOpts, []),
Ciphers = proplists:get_value(ciphers, SslOpts, default_ciphers(TlsVersions)),
SslOpts2 = merge_opts(SslOpts, [{ciphers, Ciphers}]),
case ssl:connect(Sock, SslOpts2, Timeout) of
{ok, SslSock} ->
ok = ssl:controlling_process(SslSock, self()),
{ok, #ssl_socket{tcp = Sock, ssl = SslSock}};
{error, Reason} ->
{error, Reason}
end.
-spec(send(socket(), iodata()) -> ok | {error, einval | closed}).
send(Sock, Data) when is_port(Sock) ->
gen_tcp:send(Sock, Data);
send(#ssl_socket{ssl = SslSock}, Data) ->
ssl:send(SslSock, Data).
-spec(recv(socket(), non_neg_integer())
-> {ok, iodata()} | {error, closed | inet:posix()}).
recv(Sock, Length) when is_port(Sock) ->
gen_tcp:recv(Sock, Length);
recv(#ssl_socket{ssl = SslSock}, Length) ->
ssl:recv(SslSock, Length).
-spec(close(socket()) -> ok).
close(Sock) when is_port(Sock) ->
gen_tcp:close(Sock);
close(#ssl_socket{ssl = SslSock}) ->
ssl:close(SslSock).
-spec(setopts(socket(), [gen_tcp:option() | ssl:socketoption()]) -> ok).
setopts(Sock, Opts) when is_port(Sock) ->
inet:setopts(Sock, Opts);
setopts(#ssl_socket{ssl = SslSock}, Opts) ->
ssl:setopts(SslSock, Opts).
-spec(getstat(socket(), [atom()])
-> {ok, [{atom(), integer()}]} | {error, term()}).
getstat(Sock, Options) when is_port(Sock) ->
inet:getstat(Sock, Options);
getstat(#ssl_socket{tcp = Sock}, Options) ->
inet:getstat(Sock, Options).
-spec(sockname(socket()) -> {ok, sockname()} | {error, term()}).
sockname(Sock) when is_port(Sock) ->
inet:sockname(Sock);
sockname(#ssl_socket{ssl = SslSock}) ->
ssl:sockname(SslSock).
-spec(merge_opts(list(), list()) -> list()).
merge_opts(Defaults, Options) ->
lists:foldl(
fun({Opt, Val}, Acc) ->
lists:keystore(Opt, 1, Acc, {Opt, Val});
(Opt, Acc) ->
lists:usort([Opt | Acc])
end, Defaults, Options).
default_ciphers(TlsVersions) ->
lists:foldl(
fun(TlsVer, Ciphers) ->
Ciphers ++ ssl:cipher_suites(all, TlsVer)
end, [], TlsVersions).

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%%%-------------------------------------------------------------------
%%% @author licheng5
%%% @copyright (C) 2020, <COMPANY>
%%% @doc
%%%
%%% @end
%%% Created : 26. 4月 2020 3:36 下午
%%%-------------------------------------------------------------------
-module(http_protocol).
-author("licheng5").
%% API
-export([init/2]).
-export([json_data/1, json_error/2]).
init(Req0, Opts = [Mod|_]) ->
Method = binary_to_list(cowboy_req:method(Req0)),
Path = binary_to_list(cowboy_req:path(Req0)),
QueryStr = cowboy_req:qs(Req0),
{ok, Body, Req1} = parse_body(Req0),
try Mod:handle_request(Method, Path, QueryStr, Body) of
{ok, StatusCode, Resp} ->
AcceptEncoding = cowboy_req:header(<<"accept-encoding">>, Req1, <<>>),
Req2 = case iolist_size(Resp) >= 1024 andalso supported_gzip(AcceptEncoding) of
true ->
Resp1 = zlib:gzip(Resp),
cowboy_req:reply(StatusCode, #{
<<"Content-Type">> => <<"application/json;charset=utf-8">>,
<<"Content-Encoding">> => <<"gzip">>
}, Resp1, Req1);
false ->
cowboy_req:reply(StatusCode, #{
<<"Content-Type">> => <<"application/json;charset=utf-8">>
}, Resp, Req1)
end,
{ok, Req2, Opts}
catch
throw:Error ->
ErrResp = json_error(-1, Error),
Req2 = cowboy_req:reply(404, #{
<<"Content-Type">> => <<"application/json;charset=utf-8">>
}, ErrResp, Req1),
{ok, Req2, Opts};
_:Error:Stack ->
lager:warning("[http_handler] get error: ~p, stack: ~p", [Error, Stack]),
Req2 = cowboy_req:reply(500, #{
<<"Content-Type">> => <<"text/html;charset=utf-8">>
}, <<"Internal Server Error">>, Req1),
{ok, Req2, Opts}
end.
%% 判断是否支持gzip
supported_gzip(AcceptEncoding) when is_binary(AcceptEncoding) ->
binary:match(AcceptEncoding, <<"gzip">>) =/= nomatch.
parse_body(Req0) ->
ContentType = cowboy_req:header(<<"content-type">>, Req0),
case ContentType of
<<"application/x-www-form-urlencoded">> ->
{ok, PostParams0, Req1} = cowboy_req:read_urlencoded_body(Req0),
PostParams = maps:from_list(PostParams0),
{ok, jiffy:encode(PostParams, [force_utf8]), Req1};
_ ->
{ok, Body, Req1} = read_body(Req0),
{ok, Body, Req1}
end.
%% 读取请求体
read_body(Req) ->
read_body(Req, <<>>).
read_body(Req, AccData) ->
case cowboy_req:read_body(Req) of
{ok, Data, Req1} ->
{ok, <<AccData/binary, Data/binary>>, Req1};
{more, Data, Req1} ->
read_body(Req1, <<AccData/binary, Data/binary>>)
end.
json_data(Data) ->
jiffy:encode(#{
<<"result">> => Data
}, [force_utf8]).
json_error(ErrCode, ErrMessage) when is_integer(ErrCode), is_binary(ErrMessage) ->
jiffy:encode(#{
<<"error">> => #{
<<"code">> => ErrCode,
<<"message">> => ErrMessage
}
}, [force_utf8]).

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%%%-------------------------------------------------------------------
%%% @author anlicheng
%%% @copyright (C) 2024, <COMPANY>
%%% @doc
%%%
%%% @end
%%% Created : 04. 9月 2024 16:13
%%%-------------------------------------------------------------------
-module(power_device).
-author("anlicheng").
-behaviour(gen_server).
%% API
-export([start_link/2]).
-export([get_pid/1, get_name/1]).
-export([metric_data/2, poll_status/1]).
-define(UNIT0, 16#10).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
-record(state, {
device_uuid :: binary(),
heartbeat_ticker :: integer(),
%% 消息计数器
data_counter = 0,
%% 状态，1: 在线，0: 离线
status = 0
}).
%%%===================================================================
%%% API
%%%===================================================================
-spec get_pid(DeviceUUID :: binary()) -> undefined | pid().
get_pid(DeviceUUID) when is_binary(DeviceUUID) ->
whereis(get_name(DeviceUUID)).
-spec get_name(DeviceUUID :: binary()) -> atom().
get_name(DeviceUUID) when is_binary(DeviceUUID) ->
binary_to_atom(<<"power_device:", DeviceUUID/binary>>).
-spec metric_data(Pid :: pid(), Message :: binary()) -> no_return().
metric_data(Pid, Message) when is_pid(Pid), is_binary(Message) ->
gen_server:cast(Pid, {metric_data, Message}).
%% 查询设备的当前状态, 1: 在线，0: 离线
-spec poll_status(Pid :: pid()) -> {ok, Status :: integer()}.
poll_status(Pid) when is_pid(Pid) ->
gen_server:call(Pid, poll_status).
%% @doc Spawns the server and registers the local name (unique)
-spec(start_link(Name :: atom(), DeviceUUID :: binary()) ->
{ok, Pid :: pid()} | ignore | {error, Reason :: term()}).
start_link(Name, DeviceUUID) when is_atom(Name), is_binary(DeviceUUID) ->
gen_server:start_link({local, get_name(DeviceUUID)}, ?MODULE, [DeviceUUID], []).
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
%% @private
%% @doc Initializes the server
-spec(init(Args :: term()) ->
{ok, State :: #state{}} | {ok, State :: #state{}, timeout() | hibernate} |
{stop, Reason :: term()} | ignore).
init([DeviceUUID]) ->
{ok, HeartbeatTicker0} = application:get_env(power_gateway, heartbeat_ticker),
HeartbeatTicker = HeartbeatTicker0 * 1000,
erlang:start_timer(HeartbeatTicker, self(), heartbeat_ticker),
{ok, #state{device_uuid = DeviceUUID, heartbeat_ticker = HeartbeatTicker, status = 0}}.
%% @private
%% @doc Handling call messages
-spec(handle_call(Request :: term(), From :: {pid(), Tag :: term()},
State :: #state{}) ->
{reply, Reply :: term(), NewState :: #state{}} |
{reply, Reply :: term(), NewState :: #state{}, timeout() | hibernate} |
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), Reply :: term(), NewState :: #state{}} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_call(poll_status, _From, State = #state{status = Status}) ->
{reply, {ok, Status}, State};
handle_call(_Request, _From, State = #state{}) ->
{reply, ok, State}.
%% @private
%% @doc Handling cast messages
-spec(handle_cast(Request :: term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_cast({metric_data, Message}, State = #state{device_uuid = DeviceUUID, data_counter = DataCounter, status = Status}) ->
case catch jiffy:decode(Message, [return_maps]) of
#{<<"properties">> := Props0} ->
Props = lists:map(fun(Fields) -> transform(Fields#{<<"device_uuid">> => DeviceUUID}) end, Props0),
Info = iolist_to_binary(jiffy:encode(Props, [force_utf8])),
case catch efka_client:send_metric_data(Props, #{}) of
{ok, _} ->
power_logger:write([<<"OK">>, Info]);
_ ->
power_logger:write([<<"ERROR">>, Info])
end,
%% 如果设备当前是离线状态，则需要发送上线消息
Status == 0 andalso efka_client:device_online(DeviceUUID),
{noreply, State#state{data_counter = DataCounter + 1, status = 1}};
M when is_map(M) ->
lager:notice("[power_device] invalid map: ~p", [M]);
Error ->
lager:notice("[power_device] jiffy decode error: ~p", [Error]),
{noreply, State}
end.
%% @private
%% @doc Handling all non call/cast messages
-spec(handle_info(Info :: timeout() | term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_info({timeout, _, heartbeat_ticker}, State = #state{device_uuid = DeviceUUID, heartbeat_ticker = HeartbeatTicker, data_counter = DataCounter, status = Status}) ->
erlang:start_timer(HeartbeatTicker, self(), heartbeat_ticker),
case DataCounter > 0 of
true ->
{noreply, State};
false ->
Status == 1 andalso efka_client:device_offline(DeviceUUID),
{noreply, State#state{status = 0}}
end.
%% @private
%% @doc This function is called by a gen_server when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any
%% necessary cleaning up. When it returns, the gen_server terminates
%% with Reason. The return value is ignored.
-spec(terminate(Reason :: (normal | shutdown | {shutdown, term()} | term()),
State :: #state{}) -> term()).
terminate(_Reason, _State = #state{}) ->
ok.
%% @private
%% @doc Convert process state when code is changed
-spec(code_change(OldVsn :: term() | {down, term()}, State :: #state{},
Extra :: term()) ->
{ok, NewState :: #state{}} | {error, Reason :: term()}).
code_change(_OldVsn, State = #state{}, _Extra) ->
{ok, State}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
%% 网关上来的数据写反了： value是类型，unit才是数值
%% [{"value":"int","unit":44081,"type":"AI","timestamp":1730799797,"name":"使用次数","label":"次","key":"use_times","device_uuid":"30409239002349977617259608405456"}]
-spec transform(Prop :: map()) -> map().
transform(Prop = #{<<"key">> := <<"total_power">>, <<"unit">> := Unit}) ->
Prop#{<<"name">> => <<"总能耗"/utf8>>, <<"value">> => Unit, <<"unit">> => 16#02};
transform(Prop = #{<<"key">> := <<"total_runtime">>, <<"unit">> := Unit}) ->
Prop#{<<"name">> => <<"总运行时间"/utf8>>, <<"value">> => Unit, <<"unit">> => ?UNIT0};
transform(Prop = #{<<"key">> := <<"use_times">>, <<"unit">> := Unit}) ->
Prop#{<<"name">> => <<"使用次数"/utf8>>, <<"label">> => <<"次"/utf8>>, <<"value">> => Unit, <<"unit">> => ?UNIT0};
transform(Prop = #{<<"key">> := <<"light_switch">>, <<"unit">> := Unit}) ->
Prop#{<<"name">> => <<"开关"/utf8>>, <<"value">> => Unit, <<"unit">> => ?UNIT0};
transform(Prop = #{<<"key">> := <<"light_brightness">>, <<"unit">> := Unit}) when is_integer(Unit) ->
Label = iolist_to_binary([<<"亮度设置为:"/utf8>>, integer_to_binary(Unit)]),
Prop#{<<"name">> => <<"亮度"/utf8>>, <<"label">> => Label, <<"value">> => Unit, <<"unit">> => ?UNIT0};
transform(Prop = #{<<"key">> := <<"light_change_time">>, <<"unit">> := Unit}) ->
Prop#{<<"name">> => <<"变亮变暗时间"/utf8>>, <<"value">> => Unit, <<"unit">> => ?UNIT0};
transform(Prop = #{<<"key">> := <<"light_status">>, <<"unit">> := Unit}) ->
Prop#{<<"name">> => <<"是否损坏"/utf8>>, <<"value">> => Unit, <<"unit">> => ?UNIT0};
transform(Prop = #{<<"unit">> := Unit}) ->
Prop#{<<"value">> => Unit, <<"unit">> => ?UNIT0}.

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%%%-------------------------------------------------------------------
%%% @author anlicheng
%%% @copyright (C) 2024, <COMPANY>
%%% @doc
%%%
%%% @end
%%% Created : 04. 9月 2024 15:39
%%%-------------------------------------------------------------------
-module(power_device_sup).
-author("anlicheng").
-behaviour(supervisor).
%% API
-export([start_link/0]).
-export([ensure_device_started/1, delete_device/1]).
%% Supervisor callbacks
-export([init/1]).
-define(SERVER, ?MODULE).
%%%===================================================================
%%% API functions
%%%===================================================================
%% @doc Starts the supervisor
-spec(start_link() -> {ok, Pid :: pid()} | ignore | {error, Reason :: term()}).
start_link() ->
supervisor:start_link({local, ?SERVER}, ?MODULE, []).
%%%===================================================================
%%% Supervisor callbacks
%%%===================================================================
%% @private
%% @doc Whenever a supervisor is started using supervisor:start_link/[2,3],
%% this function is called by the new process to find out about
%% restart strategy, maximum restart frequency and child
%% specifications.
init([]) ->
SupFlags = #{strategy => one_for_one, intensity => 1000, period => 3600},
{ok, {SupFlags, []}}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
-spec ensure_device_started(DeviceUUID :: binary()) -> {ok, Pid :: pid()} | {error, Reason :: any()}.
ensure_device_started(DeviceUUID) when is_binary(DeviceUUID) ->
case power_device:get_pid(DeviceUUID) of
DevicePid when is_pid(DevicePid) ->
{ok, DevicePid};
undefined ->
case supervisor:start_child(?MODULE, child_spec(DeviceUUID)) of
{ok, Pid} when is_pid(Pid) ->
{ok, Pid};
{error, {'already_started', Pid}} when is_pid(Pid) ->
{ok, Pid};
{error, Error} ->
{error, Error}
end
end.
delete_device(DeviceUUID) when is_binary(DeviceUUID) ->
Id = power_device:get_name(DeviceUUID),
ok = supervisor:terminate_child(?MODULE, Id),
supervisor:delete_child(?MODULE, Id).
child_spec(DeviceUUID) when is_binary(DeviceUUID) ->
Name = power_device:get_name(DeviceUUID),
#{
id => Name,
start => {power_device, start_link, [Name, DeviceUUID]},
restart => permanent,
shutdown => 2000,
type => worker,
modules => ['power_device']
}.

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{application, power_gateway,
[{description, "An OTP application"},
{vsn, "1.0"},
{registered, []},
{mod, {power_gateway_app, []}},
{applications,
[
hackney,
sync,
jiffy,
ranch,
cowboy,
lager,
kernel,
stdlib
]},
{env,[]},
{modules, []},
{licenses, ["Apache-2.0"]},
{links, []}
]}.

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%%%-------------------------------------------------------------------
%% @doc power_gateway public API
%% @end
%%%-------------------------------------------------------------------
-module(power_gateway_app).
-behaviour(application).
-export([start/2, stop/1]).
start(_StartType, _StartArgs) ->
SupResult = power_gateway_sup:start_link(),
start_http_server(),
SupResult.
stop(_State) ->
ok.
%% internal functions
start_http_server() ->
{ok, Props} = application:get_env(power_gateway, http_server),
Acceptors = proplists:get_value(acceptors, Props, 50),
MaxConnections = proplists:get_value(max_connections, Props, 10240),
Backlog = proplists:get_value(backlog, Props, 1024),
Port = proplists:get_value(port, Props),
Dispatcher = cowboy_router:compile([
{'_', [
%{"/api/[...]", http_protocol, [http_push_handler]}
]}
]),
TransOpts = [
{port, Port},
{num_acceptors, Acceptors},
{backlog, Backlog},
{max_connections, MaxConnections}
],
{ok, Pid} = cowboy:start_clear(http_listener, TransOpts, #{env => #{dispatch => Dispatcher}}),
lager:debug("[iot_app] the http server start at: ~p, pid is: ~p", [Port, Pid]).

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%%%-------------------------------------------------------------------
%%% @author aresei
%%% @copyright (C) 2023, <COMPANY>
%%% @doc
%%%
%%% @end
%%% Created : 06. 9月 2023 16:37
%%%-------------------------------------------------------------------
-module(power_gateway_args).
-author("aresei").
-behaviour(gen_server).
%% API
-export([start_link/0]).
-export([get_metric/0, get_param/0, push_metric/1, push_param/1, get_device_uuid/1]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
-define(SERVER, ?MODULE).
-record(state, {
%% #{device_id => device_uuid}, 下发的时候是：serial
metrics = #{},
param = #{}
}).
%%%===================================================================
%%% API
%%%===================================================================
-spec get_param() -> {ok, Param :: #{}}.
get_param() ->
gen_server:call(?MODULE, get_param).
-spec get_metric() -> {ok, Metric :: map()}.
get_metric() ->
gen_server:call(?MODULE, get_metric).
-spec get_device_uuid(DeviceId :: binary()) -> error | {ok, DeviceUUID :: binary()}.
get_device_uuid(DeviceId) when is_binary(DeviceId) ->
gen_server:call(?MODULE, {get_device_uuid, DeviceId}).
-spec push_param(Param :: map()) -> no_return().
push_param(Param) when is_map(Param) ->
gen_server:cast(?MODULE, {push_param, Param}).
-spec push_metric(Metrics :: list()) -> no_return().
push_metric(Metrics) when is_list(Metrics) ->
gen_server:cast(?MODULE, {push_metric, Metrics}).
%% @doc Spawns the server and registers the local name (unique)
-spec(start_link() ->
{ok, Pid :: pid()} | ignore | {error, Reason :: term()}).
start_link() ->
gen_server:start_link({local, ?SERVER}, ?MODULE, [], []).
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
%% @private
%% @doc Initializes the server
-spec(init(Args :: term()) ->
{ok, State :: #state{}} | {ok, State :: #state{}, timeout() | hibernate} |
{stop, Reason :: term()} | ignore).
init([]) ->
{ok, Metrics} = efka_client:request_metric(),
try convert_metric(Metrics) of
{ok, MetricMap} ->
lager:debug("[power_gateway_args] init load metric_map: ~p", [MetricMap]),
{ok, Param} = efka_client:request_param(),
{ok, #state{metrics = MetricMap, param = Param}}
catch
_:Error:Stack->
lager:warning("[power_gateway_args] request_metric get error: ~p, stack: ~p", [Error, Stack]),
{ok, #state{metrics = #{}, param = #{}}}
end.
%% @private
%% @doc Handling call messages
-spec(handle_call(Request :: term(), From :: {pid(), Tag :: term()},
State :: #state{}) ->
{reply, Reply :: term(), NewState :: #state{}} |
{reply, Reply :: term(), NewState :: #state{}, timeout() | hibernate} |
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), Reply :: term(), NewState :: #state{}} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_call(get_param, _From, State = #state{param = Param}) ->
{reply, {ok, Param}, State};
handle_call({get_device_uuid, DeviceId}, _From, State = #state{metrics = Metrics}) when is_map(Metrics) ->
Result = maps:find(DeviceId, Metrics),
{reply, Result, State};
handle_call({get_device_uuid, _DeviceId}, _From, State) ->
{reply, error, State};
handle_call(get_metric, _From, State = #state{metrics = Metrics}) ->
{reply, {ok, Metrics}, State}.
%% @private
%% @doc Handling cast messages
-spec(handle_cast(Request :: term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_cast({push_param, Param}, State = #state{}) ->
{noreply, State#state{param = Param}};
handle_cast({push_metric, Metrics}, State = #state{}) ->
try convert_metric(Metrics) of
{ok, MetricMap} ->
lager:debug("[power_gateway_args] push metric_map: ~p", [MetricMap]),
{noreply, State#state{metrics = MetricMap}}
catch _:_ ->
{noreply, State}
end.
%% @private
%% @doc Handling all non call/cast messages
-spec(handle_info(Info :: timeout() | term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_info(_Info, State = #state{}) ->
{noreply, State}.
%% @private
%% @doc This function is called by a gen_server when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any
%% necessary cleaning up. When it returns, the gen_server terminates
%% with Reason. The return value is ignored.
-spec(terminate(Reason :: (normal | shutdown | {shutdown, term()} | term()),
State :: #state{}) -> term()).
terminate(_Reason, _State = #state{}) ->
ok.
%% @private
%% @doc Convert process state when code is changed
-spec(code_change(OldVsn :: term() | {down, term()}, State :: #state{},
Extra :: term()) ->
{ok, NewState :: #state{}} | {error, Reason :: term()}).
code_change(_OldVsn, State = #state{}, _Extra) ->
{ok, State}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
-spec convert_metric(Metrics :: list()) -> {ok, map()}.
convert_metric(Metrics) when is_list(Metrics) ->
MetricTuples = lists:flatmap(fun
(#{<<"serial">> := DeviceId, <<"device_uuid">> := DeviceUUID}) ->
[{DeviceId, DeviceUUID}];
(_) ->
[]
end, Metrics),
{ok, maps:from_list(MetricTuples)}.

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%%%-------------------------------------------------------------------
%%% @author aresei
%%% @copyright (C) 2023, <COMPANY>
%%% @doc
%%% 1. 需要考虑集群部署的相关问题，上行的数据可能在集群中共享
%%% 2. host进程不能直接去监听topic，这样涉及到新增和下线的很多问题
%%% @end
%%% Created : 12. 3月 2023 21:27
%%%-------------------------------------------------------------------
-module(power_gateway_mqtt_subscriber).
-author("aresei").
-behaviour(gen_server).
%% API
-export([start_link/0]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
-define(SERVER, ?MODULE).
%% 需要订阅的主题信息
-define(Topics,[
{<<"/lighting/+/data">>, 2}
]).
-record(state, {
conn_pid :: pid()
}).
%%%===================================================================
%%% API
%%%===================================================================
%% @doc Spawns the server and registers the local name (unique)
-spec(start_link() ->
{ok, Pid :: pid()} | ignore | {error, Reason :: term()}).
start_link() ->
gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
%% @private
%% @doc Initializes the server
-spec(init(Args :: term()) ->
{ok, State :: #state{}} | {ok, State :: #state{}, timeout() | hibernate} |
{stop, Reason :: term()} | ignore).
init([]) ->
%% 建立到emqx服务器的连接
Opts = emqx_opts(<<"power-subscriber">>),
lager:debug("[opts] is: ~p", [Opts]),
case emqtt:start_link(Opts) of
{ok, ConnPid} ->
lager:debug("[mqtt_subscriber] start conntecting, pid: ~p", [ConnPid]),
{ok, _} = emqtt:connect(ConnPid),
lager:debug("[mqtt_subscriber] connect success"),
%% 监听和设备的全部事件
SubscribeResult = emqtt:subscribe(ConnPid, ?Topics),
lager:debug("[mqtt_subscriber] subscribe topics: ~p, result is: ~p", [?Topics, SubscribeResult]),
{ok, #state{conn_pid = ConnPid}};
ignore ->
lager:debug("[mqtt_subscriber] connect emqx get ignore"),
{stop, ignore};
{error, Reason} ->
lager:debug("[mqtt_subscriber] connect emqx get error: ~p", [Reason]),
{stop, Reason}
end.
%% @private
%% @doc Handling call messages
-spec(handle_call(Request :: term(), From :: {pid(), Tag :: term()},
State :: #state{}) ->
{reply, Reply :: term(), NewState :: #state{}} |
{reply, Reply :: term(), NewState :: #state{}, timeout() | hibernate} |
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), Reply :: term(), NewState :: #state{}} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_call(_Info, _From, State = #state{conn_pid = _ConnPid}) ->
{reply, ok, State}.
%% @private
%% @doc Handling cast messages
-spec(handle_cast(Request :: term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_cast(_Request, State = #state{}) ->
{noreply, State}.
%% @private
%% @doc Handling all non call/cast messages
-spec(handle_info(Info :: timeout() | term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_info({disconnect, ReasonCode, Properties}, State = #state{}) ->
lager:debug("[mqtt_subscriber] Recv a DISONNECT packet - ReasonCode: ~p, Properties: ~p", [ReasonCode, Properties]),
{stop, disconnected, State};
%% 必须要做到消息的快速分发，数据的json反序列需要在host进程进行
handle_info({publish, #{packet_id := _PacketId, payload := Payload, qos := Qos, topic := Topic}}, State = #state{conn_pid = _ConnPid}) ->
lager:debug("[mqtt_subscriber] Recv a topic: ~p, publish packet: ~p, qos: ~p", [Topic, Payload, Qos]),
%% 将消息分发到对应的publisher进程去处理, 提高消息的处理速度; topic格式: /lighting/C0AA213BD7F0/data
case Topic of
<<"/lighting/", DeviceInfo/binary>> ->
[DeviceMac, <<"data">>] = binary:split(DeviceInfo, <<"/">>),
dispatch(DeviceMac, Payload);
_ ->
ok
end,
{noreply, State};
handle_info({puback, Packet = #{packet_id := _PacketId}}, State = #state{}) ->
lager:debug("[mqtt_subscriber] receive puback packet: ~p", [Packet]),
{noreply, State};
handle_info(Info, State = #state{}) ->
lager:debug("[mqtt_subscriber] get info: ~p", [Info]),
{noreply, State}.
%% @private
%% @doc This function is called by a gen_server when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any
%% necessary cleaning up. When it returns, the gen_server terminates
%% with Reason. The return value is ignored.
-spec(terminate(Reason :: (normal | shutdown | {shutdown, term()} | term()),
State :: #state{}) -> term()).
terminate(Reason, _State = #state{conn_pid = ConnPid}) when is_pid(ConnPid) ->
%% 取消topic的订阅
TopicNames = lists:map(fun({Name, _}) -> Name end, ?Topics),
{ok, _Props, _ReasonCode} = emqtt:unsubscribe(ConnPid, #{}, TopicNames),
ok = emqtt:disconnect(ConnPid),
lager:debug("[iot_mqtt_subscriber] terminate with reason: ~p", [Reason]),
ok;
terminate(Reason, _State) ->
lager:debug("[iot_mqtt_subscriber] terminate with reason: ~p", [Reason]),
ok.
%% @private
%% @doc Convert process state when code is changed
-spec(code_change(OldVsn :: term() | {down, term()}, State :: #state{},
Extra :: term()) ->
{ok, NewState :: #state{}} | {error, Reason :: term()}).
code_change(_OldVsn, State = #state{}, _Extra) ->
{ok, State}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
-spec emqx_opts(ClientSuffix :: binary()) -> list().
emqx_opts(ClientSuffix) when is_binary(ClientSuffix) ->
%% 建立到emqx服务器的连接
{ok, Props} = application:get_env(power_gateway, emqx_server),
EMQXHost = proplists:get_value(host, Props),
EMQXPort = proplists:get_value(port, Props, 1883),
Username = proplists:get_value(username, Props),
Password = proplists:get_value(password, Props),
RetryInterval = proplists:get_value(retry_interval, Props, 5),
Keepalive = proplists:get_value(keepalive, Props, 86400),
Node = atom_to_binary(node()),
ClientId = <<"mqtt-client-", Node/binary, "-", ClientSuffix/binary>>,
[
{clientid, ClientId},
{host, EMQXHost},
{port, EMQXPort},
{owner, self()},
{tcp_opts, []},
{username, Username},
{password, Password},
{keepalive, Keepalive},
{auto_ack, true},
{proto_ver, v3},
{retry_interval, RetryInterval}
].
-spec dispatch(DeviceMac :: binary(), Message :: binary()) -> no_return().
dispatch(DeviceMac, Message) when is_binary(DeviceMac), is_binary(Message) ->
case power_gateway_args:get_device_uuid(DeviceMac) of
error ->
lager:notice("[mqtt_subscriber] device_mac: ~p, device_uuid not found", [DeviceMac]);
{ok, DeviceUUID} ->
case power_device_sup:ensure_device_started(DeviceUUID) of
{ok, DevicePid} ->
power_device:metric_data(DevicePid, Message);
{error, Reason} ->
lager:notice("[mqtt_subscriber] start device get error: ~p", [Reason])
end
end.

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%%%-------------------------------------------------------------------
%% @doc power_gateway top level supervisor.
%% @end
%%%-------------------------------------------------------------------
-module(power_gateway_sup).
-behaviour(supervisor).
-export([start_link/0]).
-export([init/1]).
-define(SERVER, ?MODULE).
start_link() ->
supervisor:start_link({local, ?SERVER}, ?MODULE, []).
%% sup_flags() = #{strategy => strategy(), % optional
%% intensity => non_neg_integer(), % optional
%% period => pos_integer()} % optional
%% child_spec() = #{id => child_id(), % mandatory
%% start => mfargs(), % mandatory
%% restart => restart(), % optional
%% shutdown => shutdown(), % optional
%% type => worker(), % optional
%% modules => modules()} % optional
init([]) ->
SupFlags = #{strategy => one_for_one,
intensity => 1000,
period => 3600},
{ok, EfkaServer} = application:get_env(power_gateway, efka_server),
Host = proplists:get_value(host, EfkaServer),
Port = proplists:get_value(port, EfkaServer),
%% 获取配置的名称
RegisterName = read_service_name(),
ChildSpecs = [
#{
id => 'efka_client',
start => {'efka_client', start_link, [RegisterName, Host, Port]},
restart => permanent,
shutdown => 2000,
type => worker,
modules => ['efka_client']
},
#{
id => 'power_logger',
start => {'power_logger', start_link, ["device_data"]},
restart => permanent,
shutdown => 2000,
type => worker,
modules => ['power_logger']
},
#{
id => 'power_gateway_args',
start => {'power_gateway_args', start_link, []},
restart => permanent,
shutdown => 2000,
type => worker,
modules => ['power_gateway_args']
},
#{
id => 'power_device_sup',
start => {'power_device_sup', start_link, []},
restart => permanent,
shutdown => 2000,
type => worker,
modules => ['power_device_sup']
},
#{
id => 'power_gateway_mqtt_subscriber',
start => {'power_gateway_mqtt_subscriber', start_link, []},
restart => permanent,
shutdown => 2000,
type => worker,
modules => ['power_gateway_mqtt_subscriber']
}
],
{ok, {SupFlags, ChildSpecs}}.
%% internal functions
%% 获取根目录下的配置文件
read_service_name() ->
%% 获取配置的名称
RootDir = code:root_dir(),
VersionFile = RootDir ++ "/.version",
lager:debug("[gateway_sup] version path is: ~p", [VersionFile]),
case file:read_file(VersionFile) of
{ok, RegisterName0} ->
string:trim(RegisterName0);
{error, Reason} ->
lager:warning("[power_app] read .version file get error: ~p", [Reason]),
<<"power_gateway">>
end.

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%%%-------------------------------------------------------------------
%%% @author aresei
%%% @copyright (C) 2023, <COMPANY>
%%% @doc
%%%
%%% @end
%%% Created : 07. 9月 2023 17:07
%%%-------------------------------------------------------------------
-module(power_logger).
-author("aresei").
-behaviour(gen_server).
%% API
-export([start_link/1, write/1]).
%% gen_server callbacks
-export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
-define(SERVER, ?MODULE).
-record(state, {
file_name :: string(),
date :: calendar:date(),
file
}).
%%%===================================================================
%%% API
%%%===================================================================
write(Data) ->
gen_server:cast(?SERVER, {write, Data}).
%% @doc Spawns the server and registers the local name (unique)
-spec(start_link(FileName :: string()) ->
{ok, Pid :: pid()} | ignore | {error, Reason :: term()}).
start_link(FileName) when is_list(FileName) ->
gen_server:start_link({local, ?SERVER}, ?MODULE, [FileName], []).
%%%===================================================================
%%% gen_server callbacks
%%%===================================================================
%% @private
%% @doc Initializes the server
-spec(init(Args :: term()) ->
{ok, State :: #state{}} | {ok, State :: #state{}, timeout() | hibernate} |
{stop, Reason :: term()} | ignore).
init([FileName]) ->
ensure_dir(),
FilePath = make_file(FileName, erlang:date()),
{ok, File} = file:open(FilePath, [append, binary]),
{ok, #state{file = File, file_name = FileName, date = get_date()}}.
%% @private
%% @doc Handling call messages
-spec(handle_call(Request :: term(), From :: {pid(), Tag :: term()},
State :: #state{}) ->
{reply, Reply :: term(), NewState :: #state{}} |
{reply, Reply :: term(), NewState :: #state{}, timeout() | hibernate} |
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), Reply :: term(), NewState :: #state{}} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_call(_Request, _From, State = #state{}) ->
{reply, ok, State}.
%% @private
%% @doc Handling cast messages
-spec(handle_cast(Request :: term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_cast({write, Data}, State = #state{file = OldFile, file_name = FileName, date = Date}) ->
Line = iolist_to_binary([time_prefix(), <<" ">>, format(Data), <<$\n>>]),
NDate = erlang:date(),
case maybe_new_file(Date, NDate) of
true ->
file:close(OldFile),
FilePath = make_file(FileName, NDate),
{ok, File} = file:open(FilePath, [append, binary]),
ok = file:write(File, Line),
%% 清理历史的文件, 单位: 天
delete_old_files(FileName, 10),
{noreply, State#state{file = File, date = get_date()}};
false ->
ok = file:write(OldFile, Line),
{noreply, State}
end.
%% @private
%% @doc Handling all non call/cast messages
-spec(handle_info(Info :: timeout() | term(), State :: #state{}) ->
{noreply, NewState :: #state{}} |
{noreply, NewState :: #state{}, timeout() | hibernate} |
{stop, Reason :: term(), NewState :: #state{}}).
handle_info(_Info, State = #state{}) ->
{noreply, State}.
%% @private
%% @doc This function is called by a gen_server when it is about to
%% terminate. It should be the opposite of Module:init/1 and do any
%% necessary cleaning up. When it returns, the gen_server terminates
%% with Reason. The return value is ignored.
-spec(terminate(Reason :: (normal | shutdown | {shutdown, term()} | term()),
State :: #state{}) -> term()).
terminate(_Reason, _State = #state{}) ->
ok.
%% @private
%% @doc Convert process state when code is changed
-spec(code_change(OldVsn :: term() | {down, term()}, State :: #state{},
Extra :: term()) ->
{ok, NewState :: #state{}} | {error, Reason :: term()}).
code_change(_OldVsn, State = #state{}, _Extra) ->
{ok, State}.
%%%===================================================================
%%% Internal functions
%%%===================================================================
format(Data) when is_binary(Data) ->
iolist_to_binary(Data);
format(Items) when is_list(Items) ->
iolist_to_binary(lists:join(<<"\t">>, Items)).
time_prefix() ->
{{Y, M, D}, {H, I, S}} = calendar:local_time(),
iolist_to_binary(io_lib:format("[~b-~2..0b-~2..0b ~2..0b:~2..0b:~2..0b]", [Y, M, D, H, I, S])).
-spec make_file(LogFile :: string(), {Year :: integer(), Month :: integer(), Day :: integer()}) -> string().
make_file(LogFile, {Year, Month, Day}) when is_list(LogFile) ->
Suffix = io_lib:format("~b~2..0b~2..0b", [Year, Month, Day]),
RootDir = code:root_dir() ++ "/log/",
lists:flatten(RootDir ++ LogFile ++ "." ++ Suffix).
ensure_dir() ->
RootDir = code:root_dir() ++ "/log/",
case filelib:is_dir(RootDir) of
true ->
ok;
false ->
ok = file:make_dir(RootDir)
end.
%% 获取日期信息
-spec get_date() -> Date :: calendar:date().
get_date() ->
{Date, _} = calendar:local_time(),
Date.
%% 通过日志判断是否需要生成新的日志文件
-spec maybe_new_file(Date :: calendar:date(), Date0 :: calendar:date()) -> boolean().
maybe_new_file({Y, M, D}, {Y0, M0, D0}) ->
not (Y =:= Y0 andalso M =:= M0 andalso D =:= D0).
-spec delete_old_files(FileName :: string(), Days :: integer()) -> no_return().
delete_old_files(FileName, Days) when is_list(FileName), is_integer(Days) ->
Seconds0 = calendar:datetime_to_gregorian_seconds(calendar:local_time()),
Seconds = Seconds0 - Days * 86400,
lists:foreach(fun(Day) ->
{Date, _} = calendar:gregorian_seconds_to_datetime(Seconds - Day * 86400),
FilePath = make_file(FileName, Date),
filelib:is_file(FilePath) andalso file:delete(FilePath)
end, lists:seq(1, 10)).

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boot.sh Executable file
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#!/bin/bash
docker run -e TZ=Asia/Shanghai --hostname=power_gateway --net=host --restart=always -v /data/docker/power_gateway/:/data/power_gateway/ power_gateway:latest

4
build.sh Executable file
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#!/bin/bash
rebar3 compile && rebar3 release && rebar3 tar
tar -czvf power_gateway.tgz boot.sh stop.sh Dockerfile .args.yaml

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config/sys-dev.config Normal file
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[
{power_gateway, [
{http_server, [
{port, 18082},
{acceptors, 500},
{max_connections, 10240},
{backlog, 10240}
]},
%% 离线判断时间间隔，单位：(秒)
{heartbeat_ticker, 120},
{emqx_server, [
{host, "39.98.184.67"},
{port, 1883},
{tcp_opts, []},
{username, "test"},
{password, "test1234"},
{keepalive, 86400},
{retry_interval, 5}
]},
{efka_server, [
{host, "39.98.184.67"},
{port, 3361}
]}
]},
%% 系统日志配置，系统日志为lager, 支持日志按日期自动分割
{lager, [
{colored, true},
%% Whether to write a crash log, and where. Undefined means no crash logger.
{crash_log, "trade_hub.crash.log"},
%% Maximum size in bytes of events in the crash log - defaults to 65536
{crash_log_msg_size, 65536},
%% Maximum size of the crash log in bytes, before its rotated, set
%% to 0 to disable rotation - default is 0
{crash_log_size, 10485760},
%% What time to rotate the crash log - default is no time
%% rotation. See the README for a description of this format.
{crash_log_date, "$D0"},
%% Number of rotated crash logs to keep, 0 means keep only the
%% current one - default is 0
{crash_log_count, 5},
%% Whether to redirect error_logger messages into lager - defaults to true
{error_logger_redirect, true},
%% How big the gen_event mailbox can get before it is switched into sync mode
{async_threshold, 20},
%% Switch back to async mode, when gen_event mailbox size decrease from `async_threshold'
%% to async_threshold - async_threshold_window
{async_threshold_window, 5},
{handlers, [
%% debug | info | warning | error, 日志级别
{lager_console_backend, debug},
{lager_file_backend, [{file, "debug.log"}, {level, debug}, {size, 314572800}]},
{lager_file_backend, [{file, "info.log"}, {level, info}, {size, 314572800}]},
{lager_file_backend, [{file, "notice.log"}, {level, notice}, {size, 314572800}]},
{lager_file_backend, [{file, "warning.log"}, {level, warning}, {size, 314572800}]},
{lager_file_backend, [{file, "error.log"}, {level, error}, {size, 314572800}]}
]}
]}
].

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[
{power_gateway, [
{http_server, [
{port, 18082},
{acceptors, 500},
{max_connections, 10240},
{backlog, 10240}
]},
%% 离线判断时间间隔，单位：(秒)
{heartbeat_ticker, 5400},
{emqx_server, [
{host, "172.30.37.212"},
{port, 1883},
{tcp_opts, []},
{username, "power_gateway"},
{password, "PqRsTuVwXyZ!@#xy"},
{keepalive, 86400},
{retry_interval, 5}
]},
{efka_server, [
{host, "localhost"},
{port, 3361}
]}
]},
%% 系统日志配置，系统日志为lager, 支持日志按日期自动分割
{lager, [
{colored, true},
%% Whether to write a crash log, and where. Undefined means no crash logger.
{crash_log, "trade_hub.crash.log"},
%% Maximum size in bytes of events in the crash log - defaults to 65536
{crash_log_msg_size, 65536},
%% Maximum size of the crash log in bytes, before its rotated, set
%% to 0 to disable rotation - default is 0
{crash_log_size, 10485760},
%% What time to rotate the crash log - default is no time
%% rotation. See the README for a description of this format.
{crash_log_date, "$D0"},
%% Number of rotated crash logs to keep, 0 means keep only the
%% current one - default is 0
{crash_log_count, 5},
%% Whether to redirect error_logger messages into lager - defaults to true
{error_logger_redirect, true},
%% How big the gen_event mailbox can get before it is switched into sync mode
{async_threshold, 20},
%% Switch back to async mode, when gen_event mailbox size decrease from `async_threshold'
%% to async_threshold - async_threshold_window
{async_threshold_window, 5},
{handlers, [
%% debug | info | warning | error, 日志级别
% {lager_console_backend, debug},
{lager_file_backend, [{file, "debug.log"}, {level, debug}, {size, 314572800}]},
{lager_file_backend, [{file, "info.log"}, {level, info}, {size, 314572800}]},
{lager_file_backend, [{file, "notice.log"}, {level, notice}, {size, 314572800}]},
{lager_file_backend, [{file, "warning.log"}, {level, warning}, {size, 314572800}]},
{lager_file_backend, [{file, "error.log"}, {level, error}, {size, 314572800}]}
]}
]}
].

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config/vm.args Normal file
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-sname power_gateway
-setcookie power_gateway_cookie
+K true
+A30

42
docs/recevie_data.md Normal file
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## 接受到的数据类型包括
### total_power
```json
{
"value": 30074,
"unit": 2,
"type": "AI",
"timestamp": 1763395200,
"name": "总能耗",
"label": "W.h",
"key": "total_power",
"device_uuid": "33806774076388556817340611953938"
}
```
### total_runtime
```json
{
"value": 65,
"unit": 16,
"type": "AI",
"timestamp": 1763395200,
"name": "总运行时间",
"label": "h",
"key": "total_runtime",
"device_uuid": "33806774076388556817340611953938"
}
```
### use_times
```json
{
"value": 15301,
"unit": 16,
"type": "AI",
"timestamp": 1763395200,
"name": "使用次数",
"label": "次",
"key": "use_times",
"device_uuid": "33806741326004633617340611173101"
}
```

BIN
docs/灯联网网关推送规格书.pdf Normal file
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46
rebar.config Normal file
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{erl_opts, [debug_info]}.
{deps, [
{poolboy, ".*", {git, "https://github.com/devinus/poolboy.git", {tag, "1.5.1"}}},
{hackney, ".*", {git, "https://github.com/benoitc/hackney.git", {tag, "1.16.0"}}},
{sync, ".*", {git, "https://github.com/rustyio/sync.git", {branch, "master"}}},
{jiffy, ".*", {git, "https://github.com/davisp/jiffy.git", {tag, "1.1.1"}}},
{mysql, ".*", {git, "https://github.com/mysql-otp/mysql-otp", {tag, "1.8.0"}}},
{cowboy, ".*", {git, "https://github.com/ninenines/cowboy.git", {tag, "2.10.0"}}},
{parse_trans, ".*", {git, "https://github.com/uwiger/parse_trans", {tag, "3.0.0"}}},
{lager, ".*", {git,"https://github.com/erlang-lager/lager.git", {tag, "3.9.2"}}}
]}.
{relx, [{release, {power_gateway, "1.0"},
[power_gateway,
sasl]},
{mode, dev},
{include_erts, false},
%% automatically picked up if the files
%% exist but can be set manually, which
%% is required if the names aren't exactly
%% sys.config and vm.args
{sys_config, "./config/sys.config"},
{vm_args, "./config/vm.args"}
%% the .src form of the configuration files do
%% not require setting RELX_REPLACE_OS_VARS
%% {sys_config_src, "./config/sys.config.src"},
%% {vm_args_src, "./config/vm.args.src"}
]}.
{profiles, [{prod, [{relx,
[%% prod is the default mode when prod
%% profile is used, so does not have
%% to be explicitly included like this
{mode, prod}
%% use minimal mode to exclude ERTS
%% {mode, minimal}
]
}]}]}.
{erl_opts, [{parse_transform,lager_transform}]}.
{rebar_packages_cdn, "https://hexpm.upyun.com"}.

69
rebar.lock Normal file
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{"1.2.0",
[{<<"certifi">>,{pkg,<<"certifi">>,<<"2.5.2">>},1},
{<<"cowboy">>,
{git,"https://github.com/ninenines/cowboy.git",
{ref,"9e600f6c1df3c440bc196b66ebbc005d70107217"}},
0},
{<<"cowlib">>,
{git,"https://github.com/ninenines/cowlib",
{ref,"cc04201c1d0e1d5603cd1cde037ab729b192634c"}},
1},
{<<"fs">>,{pkg,<<"fs">>,<<"6.1.1">>},1},
{<<"goldrush">>,{pkg,<<"goldrush">>,<<"0.1.9">>},1},
{<<"hackney">>,
{git,"https://github.com/benoitc/hackney.git",
{ref,"f3e9292db22c807e73f57a8422402d6b423ddf5f"}},
0},
{<<"idna">>,{pkg,<<"idna">>,<<"6.0.1">>},1},
{<<"jiffy">>,
{git,"https://github.com/davisp/jiffy.git",
{ref,"9ea1b35b6e60ba21dfd4adbd18e7916a831fd7d4"}},
0},
{<<"lager">>,
{git,"https://github.com/erlang-lager/lager.git",
{ref,"459a3b2cdd9eadd29e5a7ce5c43932f5ccd6eb88"}},
0},
{<<"metrics">>,{pkg,<<"metrics">>,<<"1.0.1">>},1},
{<<"mimerl">>,{pkg,<<"mimerl">>,<<"1.2.0">>},1},
{<<"mysql">>,
{git,"https://github.com/mysql-otp/mysql-otp",
{ref,"caf5ff96c677a8fe0ce6f4082bc036c8fd27dd62"}},
0},
{<<"parse_trans">>,
{git,"https://github.com/uwiger/parse_trans",
{ref,"6f3645afb43c7c57d61b54ef59aecab288ce1013"}},
0},
{<<"poolboy">>,
{git,"https://github.com/devinus/poolboy.git",
{ref,"3bb48a893ff5598f7c73731ac17545206d259fac"}},
0},
{<<"ranch">>,
{git,"https://github.com/ninenines/ranch",
{ref,"a692f44567034dacf5efcaa24a24183788594eb7"}},
1},
{<<"ssl_verify_fun">>,{pkg,<<"ssl_verify_fun">>,<<"1.1.6">>},1},
{<<"sync">>,
{git,"https://github.com/rustyio/sync.git",
{ref,"7dc303ed4ce8d26db82e171dbbd7c41067852c65"}},
0},
{<<"unicode_util_compat">>,{pkg,<<"unicode_util_compat">>,<<"0.5.0">>},2}]}.
[
{pkg_hash,[
{<<"certifi">>, <<"B7CFEAE9D2ED395695DD8201C57A2D019C0C43ECAF8B8BCB9320B40D6662F340">>},
{<<"fs">>, <<"9D147B944D60CFA48A349F12D06C8EE71128F610C90870BDF9A6773206452ED0">>},
{<<"goldrush">>, <<"F06E5D5F1277DA5C413E84D5A2924174182FB108DABB39D5EC548B27424CD106">>},
{<<"idna">>, <<"1D038FB2E7668CE41FBF681D2C45902E52B3CB9E9C77B55334353B222C2EE50C">>},
{<<"metrics">>, <<"25F094DEA2CDA98213CECC3AEFF09E940299D950904393B2A29D191C346A8486">>},
{<<"mimerl">>, <<"67E2D3F571088D5CFD3E550C383094B47159F3EEE8FFA08E64106CDF5E981BE3">>},
{<<"ssl_verify_fun">>, <<"CF344F5692C82D2CD7554F5EC8FD961548D4FD09E7D22F5B62482E5AEAEBD4B0">>},
{<<"unicode_util_compat">>, <<"8516502659002CEC19E244EBD90D312183064BE95025A319A6C7E89F4BCCD65B">>}]},
{pkg_hash_ext,[
{<<"certifi">>, <<"3B3B5F36493004AC3455966991EAF6E768CE9884693D9968055AEEEB1E575040">>},
{<<"fs">>, <<"EF94E95FFE79916860649FED80AC62B04C322B0BB70F5128144C026B4D171F8B">>},
{<<"goldrush">>, <<"99CB4128CFFCB3227581E5D4D803D5413FA643F4EB96523F77D9E6937D994CEB">>},
{<<"idna">>, <<"A02C8A1C4FD601215BB0B0324C8A6986749F807CE35F25449EC9E69758708122">>},
{<<"metrics">>, <<"69B09ADDDC4F74A40716AE54D140F93BEB0FB8978D8636EADED0C31B6F099F16">>},
{<<"mimerl">>, <<"F278585650AA581986264638EBF698F8BB19DF297F66AD91B18910DFC6E19323">>},
{<<"ssl_verify_fun">>, <<"BDB0D2471F453C88FF3908E7686F86F9BE327D065CC1EC16FA4540197EA04680">>},
{<<"unicode_util_compat">>, <<"D48D002E15F5CC105A696CF2F1BBB3FC72B4B770A184D8420C8DB20DA2674B38">>}]}
].

5
run Executable file
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#! /bin/sh
rebar3 compile
rebar3 release
_build/default/rel/power_gateway/bin/power_gateway console

3
stop.sh Executable file
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#!/bin/bash
docker ps -a | grep "power_gateway:latest" | awk -F " " '{print $1}' | xargs docker stop | xargs docker rm