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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,178 @@ | ||
| %%-------------------------------------------------------------------- | ||
| %% Copyright (c) 2018-2021 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(dgiot_tracer). | ||
|
|
||
| -export([ | ||
| add_trace/1, | ||
| del_trace/1, | ||
| check_trace/3 | ||
| ]). | ||
|
|
||
| %% Mnesia bootstrap | ||
| -export([mnesia/1]). | ||
| -define(DGIOT_CLIENT_TRACE, dgiot_client_trace). | ||
| -define(DGIOT_TOPIC_TRACE, dgiot_topic_trace). | ||
| -record(dgiot_client_trace, {key :: binary(), value}). | ||
| -record(dgiot_topic_trace, {key :: binary(), value}). | ||
|
|
||
| -boot_mnesia({mnesia, [boot]}). | ||
| -copy_mnesia({mnesia, [copy]}). | ||
|
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||
| %% APIs | ||
| %% @doc Create or replicate topics table. | ||
| -spec(mnesia(boot | copy) -> ok). | ||
| mnesia(boot) -> | ||
| %% Optimize storage | ||
| StoreProps = [{ets, [{read_concurrency, true}, | ||
| {write_concurrency, true} | ||
| ]}], | ||
| ok = ekka_mnesia:create_table(?DGIOT_TOPIC_TRACE, [ | ||
| {ram_copies, [node()]}, | ||
| {record_name, ?DGIOT_TOPIC_TRACE}, | ||
| {attributes, record_info(fields, ?DGIOT_TOPIC_TRACE)}, | ||
| {type, ordered_set}, | ||
| {storage_properties, StoreProps}]), | ||
| ok = ekka_mnesia:create_table(?DGIOT_CLIENT_TRACE, [ | ||
| {ram_copies, [node()]}, | ||
| {record_name, ?DGIOT_CLIENT_TRACE}, | ||
| {attributes, record_info(fields, ?DGIOT_CLIENT_TRACE)}, | ||
| {type, ordered_set}, | ||
| {storage_properties, StoreProps}]); | ||
| mnesia(copy) -> | ||
| %% Copy topics table | ||
| ok = ekka_mnesia:copy_table(?DGIOT_TOPIC_TRACE, ram_copies), | ||
| ok = ekka_mnesia:copy_table(?DGIOT_CLIENT_TRACE, ram_copies). | ||
|
|
||
| add_trace({Type, Id}) when is_list(Id) -> | ||
| add_trace({Type, list_to_binary(Id)}); | ||
| add_trace({Type, Id}) when is_atom(Id) -> | ||
| add_trace({Type, atom_to_binary(Id)}); | ||
| add_trace({clientid, ClientId}) -> | ||
| insert(?DGIOT_CLIENT_TRACE, ClientId, clientid); | ||
| add_trace({topic, TopicFilter}) -> | ||
| insert(?DGIOT_TOPIC_TRACE, TopicFilter, topic); | ||
| add_trace(_) -> | ||
| ignore. | ||
|
|
||
| del_trace({Type, Id}) when is_list(Id) -> | ||
| del_trace({Type, list_to_binary(Id)}); | ||
| del_trace({Type, Id}) when is_atom(Id) -> | ||
| del_trace({Type, atom_to_binary(Id)}); | ||
| del_trace({clientid, ClientId}) -> | ||
| delete(?DGIOT_CLIENT_TRACE, ClientId); | ||
| del_trace({topic, TopicFilter}) -> | ||
| delete(?DGIOT_TOPIC_TRACE, TopicFilter); | ||
| del_trace(_) -> | ||
| ignore. | ||
| get_trace({Type, Id}) when is_list(Id) -> | ||
| get_trace({Type, list_to_binary(Id)}); | ||
| get_trace({Type, Id}) when is_atom(Id) -> | ||
| get_trace({Type, atom_to_binary(Id)}); | ||
| get_trace({clientid, ClientId}) -> | ||
| ets:member(?DGIOT_CLIENT_TRACE, ClientId); | ||
| get_trace({topic, Topic}) -> | ||
| lists:any(fun({emqx_topic_trace,TopicFilter, _}) -> | ||
| emqx_topic:match(Topic, TopicFilter) | ||
| end, ets:tab2list(?DGIOT_TOPIC_TRACE)); | ||
| get_trace(_) -> | ||
| false. | ||
|
|
||
| check_trace(From, Topic,Payload) -> | ||
| case get_trace({clientid, From}) of | ||
| true -> | ||
| BinClientId = dgiot_utils:to_binary(From), | ||
| dgiot_mqtt:publish(self(), <<"logger_trace/trace/", BinClientId/binary, Topic/binary>>, Payload); | ||
| false -> | ||
| case get_trace({topic, Topic}) of | ||
| true -> | ||
| dgiot_mqtt:publish(self(), <<"logger_trace/trace/", Topic/binary>>, Payload); | ||
| false -> | ||
| false | ||
| end | ||
| end. | ||
|
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||
|
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| %%-------------------------------------------------------------------- | ||
| %% Mnesia APIs | ||
| %%-------------------------------------------------------------------- | ||
| lookup(Tab, Key) -> | ||
| Result = mnesia:transaction(fun mnesia:read/1, [{Tab, Key}]), | ||
| result(Result). | ||
|
|
||
| insert(?DGIOT_CLIENT_TRACE, Key, Value) -> | ||
| case lookup(?DGIOT_CLIENT_TRACE, Key) of | ||
| {ok, _} -> | ||
| delete(?DGIOT_CLIENT_TRACE, Key); | ||
| _ -> | ||
| pass | ||
| end, | ||
| case get(?DGIOT_CLIENT_TRACE, Key) of | ||
| not_find -> | ||
| insert_(?DGIOT_CLIENT_TRACE,#?DGIOT_CLIENT_TRACE{key = Key, value = Value}); | ||
| _ -> pass | ||
| end, | ||
| insert_(?DGIOT_CLIENT_TRACE, #?DGIOT_CLIENT_TRACE{key = Key, value = Value}); | ||
|
|
||
| insert(?DGIOT_TOPIC_TRACE, Key, Value) -> | ||
| case lookup(?DGIOT_TOPIC_TRACE, Key) of | ||
| {ok, _} -> | ||
| delete(?DGIOT_TOPIC_TRACE, Key); | ||
| _ -> | ||
| pass | ||
| end, | ||
| case get(?DGIOT_TOPIC_TRACE, Key) of | ||
| not_find -> | ||
| insert_(?DGIOT_TOPIC_TRACE,#?DGIOT_TOPIC_TRACE{key = Key, value = Value}); | ||
| _ -> pass | ||
| end, | ||
| insert_(?DGIOT_TOPIC_TRACE, #?DGIOT_TOPIC_TRACE{key = Key, value = Value}). | ||
|
|
||
| insert_(?DGIOT_CLIENT_TRACE, Record) -> | ||
| F = fun() -> | ||
| mnesia:write(?DGIOT_CLIENT_TRACE, Record, write) | ||
| end, | ||
| Result = mnesia:transaction(F), | ||
| result(Result); | ||
|
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| insert_(?DGIOT_TOPIC_TRACE, Record) -> | ||
| F = fun() -> | ||
| mnesia:write(?DGIOT_TOPIC_TRACE, Record, write) | ||
| end, | ||
| Result = mnesia:transaction(F), | ||
| result(Result). | ||
|
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||
| get(Name, Key) -> | ||
| case ets:lookup(Name, Key) of | ||
| [] -> not_find; | ||
| [{Key, Value} | _] -> Value; | ||
| [Value | _] -> Value | ||
| end. | ||
|
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| delete(TAB, Key) -> | ||
| F = | ||
| fun() -> | ||
| mnesia:delete({TAB, Key}) | ||
| end, | ||
| Result = mnesia:transaction(F), | ||
| result(Result). | ||
|
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|
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| result({atomic, ok}) -> true; | ||
| result({atomic, []}) -> {error, empty}; | ||
| result({aborted, Reason}) -> {error, Reason}; | ||
| result({atomic, Result}) -> {ok, Result}; | ||
| result(Result) -> Result. |
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