History

Kjell Winblad 74c33cd4e5 feat(rule_engine): add jq function to the rule engine This commit adds a function to the rule engine that alows users to transform text or JSON objects using [jq filter programs][1]. [jq][1] is a command line tool that can be used to transform and filter JSON text using jq's built-in language. The rule engine function that is added with this commit uses the [Erlang jq NIF library][2] that wraps the jq C library in an Erlang NIF function. [1]: https://stedolan.github.io/jq/ [2]: https://github.com/emqx/jq		2022-05-04 17:09:16 +02:00
..
etc	chore(conf): EMQ X -> EMQX in conf files	2022-02-16 17:50:41 +01:00
i18n	chore(i18n): fix more and more typos	2022-04-26 09:28:05 +08:00
include	style: reformat all remaining apps	2022-04-27 15:51:18 +02:00
src	feat(rule_engine): add jq function to the rule engine	2022-05-04 17:09:16 +02:00
test	feat(rule_engine): add jq function to the rule engine	2022-05-04 17:09:16 +02:00
.gitignore	chore(apps): relocate some apps	2021-02-19 11:24:41 +01:00
README.md	chore: rename EMQX Broker to just EMQX	2022-02-19 12:51:34 +01:00
rebar.config	feat(rule_engine): add jq function to the rule engine	2022-05-04 17:09:16 +02:00

README.md

emqx-rule-engine

IoT Rule Engine

Concept

iot rule "Rule Name"
  when
     match TopicFilters and Conditions
  select
    para1 = val1
    para2 = val2
  then
    take action(#{para2 => val1, #para2 => val2})

Architecture

          |-----------------|
 Pub ---->| Message Routing |----> Sub
          |-----------------|
               |     /|\
              \|/     |
          |-----------------|
          |   Rule Engine   |
          |-----------------|
               |      |
        Backends Services Bridges

SQL for Rule query statement

select id, time, temperature as t from "topic/a" where t > 50;