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feat: add Sparkplug encode and decode functions to the rule engine 

Fixes:
https://emqx.atlassian.net/browse/EMQX-10429
This commit is contained in:
Kjell Winblad 2023-06-29 12:36:07 +02:00
parent ca52310f2b
commit 039e27a153
7 changed files with 601 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
apps/emqx_rule_engine/src/emqx_rule_funcs.erl
View File

@ -19,6 +19,10 @@
-include("rule_engine.hrl").
-include_lib("emqx/include/logger.hrl").
-if(?EMQX_RELEASE_EDITION == ee).
-include_lib("emqx_ee_schema_registry/include/emqx_ee_schema_registry.hrl").
-endif.
-elvis([{elvis_style, god_modules, disable}]).
%% IoT Funcs
@ -1128,10 +1132,31 @@ timezone_to_offset_seconds(TimeZone) ->
%% @end
-if(?EMQX_RELEASE_EDITION == ee).
%% EE
'$handle_undefined_function'(sparkplug_decode, [Data]) ->
'$handle_undefined_function'(
schema_decode,
[?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME, Data, <<"Payload">>]
);
'$handle_undefined_function'(sparkplug_decode, [Data | MoreArgs]) ->
'$handle_undefined_function'(
schema_decode,
[?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME, Data | MoreArgs]
);
'$handle_undefined_function'(schema_decode, [SchemaId, Data | MoreArgs]) ->
emqx_ee_schema_registry_serde:decode(SchemaId, Data, MoreArgs);
'$handle_undefined_function'(schema_decode, Args) ->
error({args_count_error, {schema_decode, Args}});
'$handle_undefined_function'(sparkplug_encode, [Term]) ->
'$handle_undefined_function'(
schema_encode,
[?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME, Term, <<"Payload">>]
);
'$handle_undefined_function'(sparkplug_encode, [Term | MoreArgs]) ->
'$handle_undefined_function'(
schema_encode,
[?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME, Term | MoreArgs]
);
'$handle_undefined_function'(schema_encode, [SchemaId, Term | MoreArgs]) ->
%% encode outputs iolists, but when the rule actions process those
%% it might wrongly encode them as JSON lists, so we force them to

3
lib-ee/emqx_ee_schema_registry/include/emqx_ee_schema_registry.hrl
View File

@ -12,6 +12,9 @@
-define(SERDE_TAB, emqx_ee_schema_registry_serde_tab).
-define(PROTOBUF_CACHE_TAB, emqx_ee_schema_registry_protobuf_cache_tab).
-define(EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME,
<<"__CiYAWBja87PleCyKZ58h__SparkPlug_B_BUILT-IN">>
).
-type schema_name() :: binary().
-type schema_source() :: binary().

277
lib-ee/emqx_ee_schema_registry/priv/LICENCE Normal file
View File

@ -0,0 +1,277 @@
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229
lib-ee/emqx_ee_schema_registry/priv/sparkplug_b.proto Normal file
View File

@ -0,0 +1,229 @@
// Downloaded from: https://github.com/eclipse/tahu/blob/46f25e79f34234e6145d11108660dfd9133ae50d/sparkplug_b/sparkplug_b.proto
//
// License for this file is located in the same directory as this file.
//
// * Copyright (c) 2015, 2018 Cirrus Link Solutions and others
// *
// * This program and the accompanying materials are made available under the
// * terms of the Eclipse Public License 2.0 which is available at
// * http://www.eclipse.org/legal/epl-2.0.
// *
// * SPDX-License-Identifier: EPL-2.0
// *
// * Contributors:
// * Cirrus Link Solutions - initial implementation
//
// To compile:
// cd client_libraries/java
// protoc --proto_path=../../ --java_out=src/main/java ../../sparkplug_b.proto
//
syntax = "proto2";
package org.eclipse.tahu.protobuf;
option java_package = "org.eclipse.tahu.protobuf";
option java_outer_classname = "SparkplugBProto";
enum DataType {
// Indexes of Data Types
// Unknown placeholder for future expansion.
Unknown = 0;
// Basic Types
Int8 = 1;
Int16 = 2;
Int32 = 3;
Int64 = 4;
UInt8 = 5;
UInt16 = 6;
UInt32 = 7;
UInt64 = 8;
Float = 9;
Double = 10;
Boolean = 11;
String = 12;
DateTime = 13;
Text = 14;
// Additional Metric Types
UUID = 15;
DataSet = 16;
Bytes = 17;
File = 18;
Template = 19;
// Additional PropertyValue Types
PropertySet = 20;
PropertySetList = 21;
// Array Types
Int8Array = 22;
Int16Array = 23;
Int32Array = 24;
Int64Array = 25;
UInt8Array = 26;
UInt16Array = 27;
UInt32Array = 28;
UInt64Array = 29;
FloatArray = 30;
DoubleArray = 31;
BooleanArray = 32;
StringArray = 33;
DateTimeArray = 34;
}
message Payload {
message Template {
message Parameter {
optional string name = 1;
optional uint32 type = 2;
oneof value {
uint32 int_value = 3;
uint64 long_value = 4;
float float_value = 5;
double double_value = 6;
bool boolean_value = 7;
string string_value = 8;
ParameterValueExtension extension_value = 9;
}
message ParameterValueExtension {
extensions 1 to max;
}
}
optional string version = 1; // The version of the Template to prevent mismatches
repeated Metric metrics = 2; // Each metric includes a name, datatype, and optionally a value
repeated Parameter parameters = 3;
optional string template_ref = 4; // MUST be a reference to a template definition if this is an instance (i.e. the name of the template definition) - MUST be omitted for template definitions
optional bool is_definition = 5;
extensions 6 to max;
}
message DataSet {
message DataSetValue {
oneof value {
uint32 int_value = 1;
uint64 long_value = 2;
float float_value = 3;
double double_value = 4;
bool boolean_value = 5;
string string_value = 6;
DataSetValueExtension extension_value = 7;
}
message DataSetValueExtension {
extensions 1 to max;
}
}
message Row {
repeated DataSetValue elements = 1;
extensions 2 to max; // For third party extensions
}
optional uint64 num_of_columns = 1;
repeated string columns = 2;
repeated uint32 types = 3;
repeated Row rows = 4;
extensions 5 to max; // For third party extensions
}
message PropertyValue {
optional uint32 type = 1;
optional bool is_null = 2;
oneof value {
uint32 int_value = 3;
uint64 long_value = 4;
float float_value = 5;
double double_value = 6;
bool boolean_value = 7;
string string_value = 8;
PropertySet propertyset_value = 9;
PropertySetList propertysets_value = 10; // List of Property Values
PropertyValueExtension extension_value = 11;
}
message PropertyValueExtension {
extensions 1 to max;
}
}
message PropertySet {
repeated string keys = 1; // Names of the properties
repeated PropertyValue values = 2;
extensions 3 to max;
}
message PropertySetList {
repeated PropertySet propertyset = 1;
extensions 2 to max;
}
message MetaData {
// Bytes specific metadata
optional bool is_multi_part = 1;
// General metadata
optional string content_type = 2; // Content/Media type
optional uint64 size = 3; // File size, String size, Multi-part size, etc
optional uint64 seq = 4; // Sequence number for multi-part messages
// File metadata
optional string file_name = 5; // File name
optional string file_type = 6; // File type (i.e. xml, json, txt, cpp, etc)
optional string md5 = 7; // md5 of data
// Catchalls and future expansion
optional string description = 8; // Could be anything such as json or xml of custom properties
extensions 9 to max;
}
message Metric {
optional string name = 1; // Metric name - should only be included on birth
optional uint64 alias = 2; // Metric alias - tied to name on birth and included in all later DATA messages
optional uint64 timestamp = 3; // Timestamp associated with data acquisition time
optional uint32 datatype = 4; // DataType of the metric/tag value
optional bool is_historical = 5; // If this is historical data and should not update real time tag
optional bool is_transient = 6; // Tells consuming clients such as MQTT Engine to not store this as a tag
optional bool is_null = 7; // If this is null - explicitly say so rather than using -1, false, etc for some datatypes.
optional MetaData metadata = 8; // Metadata for the payload
optional PropertySet properties = 9;
oneof value {
uint32 int_value = 10;
uint64 long_value = 11;
float float_value = 12;
double double_value = 13;
bool boolean_value = 14;
string string_value = 15;
bytes bytes_value = 16; // Bytes, File
DataSet dataset_value = 17;
Template template_value = 18;
MetricValueExtension extension_value = 19;
}
message MetricValueExtension {
extensions 1 to max;
}
}
optional uint64 timestamp = 1; // Timestamp at message sending time
repeated Metric metrics = 2; // Repeated forever - no limit in Google Protobufs
optional uint64 seq = 3; // Sequence number
optional string uuid = 4; // UUID to track message type in terms of schema definitions
optional bytes body = 5; // To optionally bypass the whole definition above
extensions 6 to max; // For third party extensions
}

2
lib-ee/emqx_ee_schema_registry/src/emqx_ee_schema_registry.app.src
View File

@ -1,6 +1,6 @@
{application, emqx_ee_schema_registry, [
{description, "EMQX Schema Registry"},
{vsn, "0.1.4"},
{vsn, "0.1.5"},
{registered, [emqx_ee_schema_registry_sup]},
{mod, {emqx_ee_schema_registry_app, []}},
{applications, [

61
lib-ee/emqx_ee_schema_registry/src/emqx_ee_schema_registry.erl
View File

@ -38,6 +38,11 @@
import_config/1
]).
%% For testing
-export([
ensure_serde_absent/1
]).
-type schema() :: #{
type := serde_type(),
source := binary(),
@ -232,11 +237,46 @@ create_tables() ->
ok.
do_build_serdes(Schemas) ->
%% We build a special serde for the Sparkplug B payload. This serde is used
%% by the rule engine functions sparkplug_decode/1 and sparkplug_encode/1.
maybe_build_sparkplug_b_serde(),
%% TODO: use some kind of mutex to make each core build a
%% different serde to avoid duplicate work. Maybe ekka_locker?
maps:foreach(fun do_build_serde/2, Schemas),
?tp(schema_registry_serdes_built, #{}).
maybe_build_sparkplug_b_serde() ->
case get_schema(?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME) of
{error, not_found} ->
do_build_serde_no_check(
?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME,
#{
type => protobuf,
source => get_schema_source(<<"sparkplug_b.proto">>)
}
);
{ok, _} ->
ok
end.
get_schema_source(Filename) ->
{ok, App} = application:get_application(),
FilePath =
case code:priv_dir(App) of
{error, bad_name} ->
erlang:error(
{error, <<"Could not find data directory (priv) for Schema Registry">>}
);
Dir ->
filename:join(Dir, Filename)
end,
case file:read_file(FilePath) of
{ok, Content} ->
Content;
{error, Reason} ->
erlang:error({error, Reason})
end.
build_serdes(Serdes) ->
build_serdes(Serdes, []).
@ -251,9 +291,18 @@ build_serdes([{Name, Params} | Rest], Acc0) ->
build_serdes([], _Acc) ->
ok.
do_build_serde(Name0, #{type := Type, source := Source}) ->
do_build_serde(Name, Serde) when not is_binary(Name) ->
do_build_serde(to_bin(Name), Serde);
do_build_serde(?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME, _Serde) ->
{error,
erlang:iolist_to_binary(
io_lib:format("Illigal schema name ~s", [?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME])
)};
do_build_serde(Name, Serde) ->
do_build_serde_no_check(Name, Serde).
do_build_serde_no_check(Name, #{type := Type, source := Source}) ->
try
Name = to_bin(Name0),
{Serializer, Deserializer, Destructor} =
emqx_ee_schema_registry_serde:make_serde(Type, Name, Source),
Serde = #serde{
@ -270,7 +319,7 @@ do_build_serde(Name0, #{type := Type, source := Source}) ->
error,
#{
msg => "error_building_serde",
name => Name0,
name => Name,
type => Type,
kind => Kind,
error => Error,
@ -280,11 +329,15 @@ do_build_serde(Name0, #{type := Type, source := Source}) ->
{error, Error}
end.
ensure_serde_absent(Name) when not is_binary(Name) ->
ensure_serde_absent(to_bin(Name));
% ensure_serde_absent(?EMQX_SCHEMA_REGISTRY_SPARKPLUGB_SCHEMA_NAME) ->
% {error, <<"Cannot delete serde for Sparkplug B schema">>};
ensure_serde_absent(Name) ->
case get_serde(Name) of
{ok, #{destructor := Destructor}} ->
Destructor(),
ok = mria:dirty_delete(?SERDE_TAB, to_bin(Name));
ok = mria:dirty_delete(?SERDE_TAB, Name);
{error, not_found} ->
ok
end.

18
lib-ee/emqx_ee_schema_registry/src/emqx_ee_schema_registry_serde.erl
View File

@ -96,7 +96,7 @@ inject_avro_name(Name, Source0) ->
-spec make_protobuf_serde_mod(schema_name(), schema_source()) -> module().
make_protobuf_serde_mod(Name, Source) ->
{SerdeMod0, SerdeModFileName} = protobuf_serde_mod_name(Name),
case lazy_generate_protobuf_code(SerdeMod0, Source) of
case lazy_generate_protobuf_code(Name, SerdeMod0, Source) of
{ok, SerdeMod, ModBinary} ->
load_code(SerdeMod, SerdeModFileName, ModBinary),
SerdeMod;
@ -121,30 +121,30 @@ protobuf_serde_mod_name(Name) ->
SerdeModFileName = SerdeModName ++ ".memory",
{SerdeMod, SerdeModFileName}.
-spec lazy_generate_protobuf_code(module(), schema_source()) ->
-spec lazy_generate_protobuf_code(schema_name(), module(), schema_source()) ->
{ok, module(), binary()} | {error, #{error := term(), warnings := [term()]}}.
lazy_generate_protobuf_code(SerdeMod0, Source) ->
lazy_generate_protobuf_code(Name, SerdeMod0, Source) ->
%% We run this inside a transaction with locks to avoid running
%% the compile on all nodes; only one will get the lock, compile
%% the schema, and other nodes will simply read the final result.
{atomic, Res} = mria:transaction(
?SCHEMA_REGISTRY_SHARD,
fun lazy_generate_protobuf_code_trans/2,
[SerdeMod0, Source]
fun lazy_generate_protobuf_code_trans/3,
[Name, SerdeMod0, Source]
),
Res.
-spec lazy_generate_protobuf_code_trans(module(), schema_source()) ->
-spec lazy_generate_protobuf_code_trans(schema_name(), module(), schema_source()) ->
{ok, module(), binary()} | {error, #{error := term(), warnings := [term()]}}.
lazy_generate_protobuf_code_trans(SerdeMod0, Source) ->
lazy_generate_protobuf_code_trans(Name, SerdeMod0, Source) ->
Fingerprint = erlang:md5(Source),
_ = mnesia:lock({record, ?PROTOBUF_CACHE_TAB, Fingerprint}, write),
case mnesia:read(?PROTOBUF_CACHE_TAB, Fingerprint) of
[#protobuf_cache{module = SerdeMod, module_binary = ModBinary}] ->
?tp(schema_registry_protobuf_cache_hit, #{}),
?tp(schema_registry_protobuf_cache_hit, #{name => Name}),
{ok, SerdeMod, ModBinary};
[] ->
?tp(schema_registry_protobuf_cache_miss, #{}),
?tp(schema_registry_protobuf_cache_miss, #{name => Name}),
case generate_protobuf_code(SerdeMod0, Source) of
{ok, SerdeMod, ModBinary} ->
CacheEntry = #protobuf_cache{