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EMQ 2.0 Documentation

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Feng 2016-08-30 13:32:17 +08:00
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114
docs/source/changes.rst
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@ -11,11 +11,119 @@ Changes
Version 2.0 (West of West Lake)
-------------------------------
*Release Date: 2016-08-29*
*Release Date: 2016-08-30*
Improve the design of PubSub and Router:
*Release Name: West of West Lake*
.. images:: _static/images/publish.png
.. NOTE:: Dont' upgrade 1.x production deployment to 2.0-beta1 release.
EMQ - Shortened Project Name
----------------------------
Adopt a shortened projectname: EMQ(Erlang/Enterprise/Elastic MQTT Broker)，E means Erlang/OTP, Enterprise and Elastic.
Improve the Release Management
------------------------------
In order to iterate the project fast, we will adopt a new release management strategy since 2.0. There will be two or three 'Preview Release' named beta1, beta2 or beta3, and then one or two 'Release Candidate' named rc1, rc2 before a Major version is production ready.
Seperate Rel from Application
-----------------------------
We split the emqttd 1.x project into two projects since 2.0-beta1 release to resolve the plugins' dependency issue.
A new project named `emqttd-relx`_ is created and responsible for buiding the emqttd application and the plugins::
git clone https://github.com/emqtt/emqttd-relx.git
cd emqttd-relx && make
cd _rel/emqttd && ./bin/emqttd console
erlang.mk and relx
------------------
The rebar which is used in 1.x release is replaced by `erlang.mk`_ and `relx`_ tools since 2.0-beta1 release.
You can check the 'Makefile' and 'relx.config' in the release project of the borker: `emqttd-relx`_ .
Improve Git Branches Management
-------------------------------
+------------+-------------------------------------------+
| stable | 1.x Stable Branch |
+------------+-------------------------------------------+
| master | 2.x Master Branch |
+------------+-------------------------------------------+
| emq10 | 1.x Developement Branch |
+------------+-------------------------------------------+
| emq20 | 2.x Development Branch |
+------------+-------------------------------------------+
| emq30 | 3.x Development Branch |
+------------+-------------------------------------------+
| issue#{id} | BugFix Branch |
+------------+-------------------------------------------+
New Config Syntax
-----------------
Since 2.0-beta1 release the configuration file of the broker and plugins adopt a new syntax like rebar.config or relx.config:
etc/emqttd.conf for example::
%% Max ClientId Length Allowed.
{mqtt_max_clientid_len, 512}.
%% Max Packet Size Allowed, 64K by default.
{mqtt_max_packet_size, 65536}.
%% Client Idle Timeout.
{mqtt_client_idle_timeout, 30}. % Second
MQTT-SN Protocol Plugin
-----------------------
The MQTT-SN Protocol Plugin `emqttd_sn`_ has been ready in 2.0-beta1 release. The default UDP port of MQTT-SN is 1884.
Load the plugin::
./bin/emqttd_ctl plugins load emqttd_sn
Improve Design of PubSub and Router
-----------------------------------
.. image:: _static/images/publish.png
Improve Plugin Management
-------------------------
The plugin of EMQ 2.0 broker is a normal erlang application which depends on and extends 'emqttd'. User can create a standalone plugin application project, and add it to `emqttd-relx`_ Makefiel as a dependency.
All the plugins' config files will be copied to emqttd/etc/plugins/ folder when making emqttd brinary packages in `emqttd-relx`_ project::
▾ emqttd/
▾ etc/
▸ modules/
▾ plugins/
emqtt_coap.conf
emqttd.conf
emqttd_auth_http.conf
emqttd_auth_mongo.conf
emqttd_auth_mysql.conf
emqttd_auth_pgsql.conf
emqttd_auth_redis.conf
emqttd_coap.conf
emqttd_dashboard.conf
emqttd_plugin_template.conf
emqttd_recon.conf
emqttd_reloader.conf
emqttd_sn.conf
emqttd_stomp.conf
EMQ 2.0 Documentation
---------------------
http://emqtt.io/docs/v2/index.html or http://docs.emqtt.com/emq20/
.. _release_1.1.3:

2
docs/source/cluster.rst
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@ -245,7 +245,7 @@ The Firewall
If there is a firewall between clustered nodes, the cluster requires to open 4369 port used by epmd daemon, and a port segment for nodes' communication.
Configure the port segment in etc/emqttd.config, for example:
Configure the port segment in releases/2.0/sys.config, for example:
.. code-block:: erlang

22
docs/source/commands.rst
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@ -20,7 +20,7 @@ Show running status of the broker::
$ ./bin/emqttd_ctl status
Node 'emqttd@127.0.0.1' is started
emqttd 1.1 is running
emqttd 2.0 is running
.. _command_broker::
@ -382,10 +382,6 @@ Query the subscription table of the broker:
+--------------------------------------------+--------------------------------------+
| subscriptions show <ClientId> | Show a subscription |
+--------------------------------------------+--------------------------------------+
| subscriptions add <ClientId> <Topic> <Qos> | Add a static subscription manually |
+--------------------------------------------+--------------------------------------+
| subscriptions del <ClientId> <Topic> | Remove a static subscription manually|
+--------------------------------------------+--------------------------------------+
subscriptions list
------------------
@ -415,22 +411,6 @@ Show the subscriptions of a MQTT client::
clientid: [{<<"x">>,1},{<<"topic2">>,1},{<<"topic3">>,1}]
subscriptions add <ClientId> <Topic> <QoS>
------------------------------------------
Add a static subscription manually::
$ ./bin/emqttd_ctl subscriptions add clientid new_topic 1
ok
subscriptions del <ClientId> <Topic>
------------------------------------
Remove a static subscription manually::
$ ./bin/emqttd_ctl subscriptions del clientid new_topic
ok
.. _command_plugins::
-------

6
docs/source/conf.py
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@ -48,7 +48,7 @@ source_suffix = '.rst'
master_doc = 'index'
# General information about the project.
project = u'Erlang MQTT Broker'
project = u'EMQ 2.0 - Erlang MQTT Broker'
copyright = u'2016, Feng Lee'
# The version info for the project you're documenting, acts as replacement for
@ -56,9 +56,9 @@ copyright = u'2016, Feng Lee'
# built documents.
#
# The short X.Y version.
version = '1.0'
version = '2.0'
# The full version, including alpha/beta/rc tags.
release = '1.0'
release = '2.0'
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.

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docs/source/config.rst
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40
docs/source/design.rst
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@ -15,6 +15,17 @@ The emqttd broker 1.0 is more like a network Switch or Router, not a traditional
.. image:: _static/images/concept.png
The EMQ 2.0 seperated the Message Flow Plane and Monitor/Control Plane, the Architecture is something like::
Control Plane
--------------------
| |
FrontEnd -> | Flow Plane | -> BackEnd
| |
Session Router
---------------------
Monitor Plane
Design Philosophy
-----------------
@ -478,3 +489,32 @@ http://github.com/emqtt/emqttd_plugin_template
.. _eSockd: https://github.com/emqtt/esockd
.. _Chain-of-responsibility_pattern: https://en.wikipedia.org/wiki/Chain-of-responsibility_pattern
.. _emqttd_plugin_template: https://github.com/emqtt/emqttd_plugin_template/blob/master/src/emqttd_plugin_template.erl
-----------------
Mnesia/ETS Tables
-----------------
+--------------------+--------+----------------------------------------+
| Table | Type | Description |
+====================+========+========================================+
| mqtt_trie | mnesia | Trie Table |
+--------------------+--------+----------------------------------------+
| mqtt_trie_node | mnesia | Trie Node Table |
+--------------------+--------+----------------------------------------+
| mqtt_route | mnesia | Global Route Table |
+--------------------+--------+----------------------------------------+
| mqtt_local_route | mnesia | Local Route Table |
+--------------------+--------+----------------------------------------+
| mqtt_pubsub | ets | PubSub Tab |
+--------------------+--------+----------------------------------------+
| mqtt_subscriber | ets | Subscriber Tab |
+--------------------+--------+----------------------------------------+
| mqtt_subscription | ets | Subscription Tab |
+--------------------+--------+----------------------------------------+
| mqtt_session | mnesia | Global Session Table |
+--------------------+--------+----------------------------------------+
| mqtt_local_session | ets | Local Session Table |
+--------------------+--------+----------------------------------------+
| mqtt_client | ets | Client Table |
+--------------------+--------+----------------------------------------+

51
docs/source/getstarted.rst
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@ -35,6 +35,8 @@ Features
* MQTT Over WebSocket(SSL)
* HTTP Publish API
* STOMP protocol
* MQTT-SN Protocol
* CoAP Protocol
* STOMP over SockJS
* $SYS/# Topics
* ClientID Authentication
@ -63,7 +65,7 @@ Installing on Mac, for example:
.. code-block:: bash
unzip emqttd-macosx-1.1-beta-20160601.zip && cd emqttd
unzip emqttd-macosx-2.0-beta1-20160830.zip && cd emqttd
# Start emqttd
./bin/emqttd start
@ -119,8 +121,6 @@ Modules
+-------------------------+--------------------------------------------+
| emqttd_auth_username | Authentication with Username and Password |
+-------------------------+--------------------------------------------+
| emqttd_auth_ldap | Authentication with LDAP |
+-------------------------+--------------------------------------------+
| emqttd_mod_presence | Publish presence message to $SYS topics |
| | when client connected or disconnected |
+-------------------------+--------------------------------------------+
@ -136,22 +136,16 @@ Enable 'emqttd_auth_username' module:
.. code-block:: erlang
{access, [
%% Authetication. Anonymous Default
{auth, [
%% Authentication with username, password
{username, []},
...
{auth, username, [{passwd, "etc/modules/passwd.conf"}]}.
Enable 'emqttd_mod_presence' module:
.. code-block:: erlang
{modules, [
%% Client presence management module.
%% Publish messages when client connected or disconnected
{presence, [{qos, 0}]}
%% Client presence management module. Publish presence messages when
%% client connected or disconnected.
{module, presence, [{qos, 0}]}.
Plugins
-------
@ -163,16 +157,20 @@ A plugin is an Erlang application to extend the emqttd broker.
+----------------------------+-----------------------------------+
| `emqttd_dashboard`_ | Web Dashboard |
+----------------------------+-----------------------------------+
| `emqttd_auth_ldap`_ | LDAP Auth Plugin |
+----------------------------+-----------------------------------+
| `emqttd_auth_http`_ | Authentication/ACL with HTTP API |
+----------------------------+-----------------------------------+
| `emqttd_plugin_mysql`_ | Authentication with MySQL |
| `emqttd_auth_mysql` _ | Authentication with MySQL |
+----------------------------+-----------------------------------+
| `emqttd_plugin_pgsql`_ | Authentication with PostgreSQL |
| `emqttd_auth_pgsql`_ | Authentication with PostgreSQL |
+----------------------------+-----------------------------------+
| `emqttd_plugin_redis`_ | Authentication with Redis |
| `emqttd_auth_redis`_ | Authentication with Redis |
+----------------------------+-----------------------------------+
| `emqttd_plugin_mongo`_ | Authentication with MongoDB |
+----------------------------+-----------------------------------+
| `emqttd_sn`_ | MQTT-SN Protocol Plugin |
+----------------------------+-----------------------------------+
| `emqttd_stomp`_ | STOMP Protocol Plugin |
+----------------------------+-----------------------------------+
| `emqttd_sockjs`_ | SockJS(Stomp) Plugin |
@ -182,9 +180,9 @@ A plugin is an Erlang application to extend the emqttd broker.
A plugin could be enabled by 'bin/emqttd_ctl plugins load' command.
For example, enable 'emqttd_plugin_pgsql' plugin::
For example, enable 'emqttd_auth_pgsql' plugin::
./bin/emqttd_ctl plugins load emqttd_plugin_pgsql
./bin/emqttd_ctl plugins load emqttd_auth_pgsql
-----------------------
One Million Connections
@ -238,11 +236,11 @@ emqttd/etc/vm.args::
emqttd broker
-------------
emqttd/etc/emqttd.config:
emqttd/etc/emqttd.conf:
.. code-block:: erlang
{mqtt, 1883, [
{listener, mqtt, 1883, [
%% Size of acceptor pool
{acceptors, 64},
@ -258,6 +256,7 @@ emqttd/etc/emqttd.config:
%% {rate_limit, "100,10"} %% 100K burst, 10K rate
]},
...
]}.
Test Client
-----------
@ -291,11 +290,15 @@ GitHub: https://github.com/emqtt
.. _emqttd_plugin_template: https://github.com/emqtt/emqttd_plugin_template
.. _emqttd_dashboard: https://github.com/emqtt/emqttd_dashboard
.. _emqttd_auth_ldap: https://github.com/emqtt/emqttd_auth_ldap
.. _emqttd_auth_http: https://github.com/emqtt/emqttd_auth_http
.. _emqttd_plugin_mysql: https://github.com/emqtt/emqttd_plugin_mysql
.. _emqttd_plugin_pgsql: https://github.com/emqtt/emqttd_plugin_pgsql
.. _emqttd_plugin_redis: https://github.com/emqtt/emqttd_plugin_redis
.. _emqttd_plugin_mongo: https://github.com/emqtt/emqttd_plugin_mongo
.. _emqttd_auth_mysql: https://github.com/emqtt/emqttd_plugin_mysql
.. _emqttd_auth_pgsql: https://github.com/emqtt/emqttd_plugin_pgsql
.. _emqttd_auth_redis: https://github.com/emqtt/emqttd_plugin_redis
.. _emqttd_auth_mongo: https://github.com/emqtt/emqttd_plugin_mongo
.. _emqttd_reloader: https://github.com/emqtt/emqttd_reloader
.. _emqttd_stomp: https://github.com/emqtt/emqttd_stomp
.. _emqttd_sockjs: https://github.com/emqtt/emqttd_sockjs
.. _emqttd_recon: https://github.com/emqtt/emqttd_recon
.. _emqttd_sn: https://github.com/emqtt/emqttd_sn

2
docs/source/index.rst
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@ -35,8 +35,6 @@ Sensors, Mobiles, Web Browsers and Application Servers could be connected by emq
| Author: | Feng Lee <feng@emqtt.io> |
+---------------+-----------------------------------------+
.. NOTE:: MQTT-SN，CoAP Protocols are planned to 1.x release.
Contents:
.. toctree::

48
docs/source/install.rst
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@ -35,7 +35,7 @@ Download binary packages from: http://emqtt.io/downloads
The package name consists of platform, version and release time.
For example: emqttd-centos64-1.1-beta-20160601.zip
For example: emqttd-centos64-2.0-beta1-20160830.zip
.. _install_on_linux:
@ -47,7 +47,7 @@ Download CentOS Package from: http://emqtt.io/downloads/latest/centos, and then
.. code-block:: bash
unzip emqttd-centos64-1.1-beta-20160601.zip
unzip emqttd-centos64-2.0-beta-20160830.zip
Start the broker in console mode:
@ -80,7 +80,7 @@ If the broker is started successfully, console will print:
mqtt listen on 0.0.0.0:1883 with 16 acceptors.
mqtts listen on 0.0.0.0:8883 with 4 acceptors.
http listen on 0.0.0.0:8083 with 4 acceptors.
Erlang MQTT Broker 1.1 is running now
Erlang MQTT Broker 2.0 is running now
Eshell V6.4 (abort with ^G)
(emqttd@127.0.0.1)1>
@ -100,7 +100,7 @@ Check the running status of the broker:
$ ./bin/emqttd_ctl status
Node 'emqttd@127.0.0.1' is started
emqttd 1.1 is running
emqttd 2.0 is running
Or check the status by URL::
@ -130,7 +130,7 @@ We could install the broker on Mac OS X to develop and debug MQTT applications.
Download Mac Package from: http://emqtt.io/downloads/latest/macosx
Configure 'lager' log level in 'etc/emqttd.config', all MQTT messages recevied/sent will be printed on console:
Configure 'lager' log level in 'releases/2.0/sys.config', all MQTT messages recevied/sent will be printed on console:
.. code-block:: erlang
@ -198,15 +198,15 @@ When all dependencies are ready, clone the emqttd project from github.com and bu
.. code-block:: bash
git clone https://github.com/emqtt/emqttd.git
git clone https://github.com/emqtt/emqttd-relx.git
cd emqttd
cd emqttd-relx && make
make && make dist
cd _rel/emqttd && ./bin/emqttd console
The binary package output in folder::
rel/emqttd
_rel/emqttd
.. _tcp_ports:
@ -228,19 +228,20 @@ The TCP ports used can be configured in etc/emqttd.config:
.. code-block:: erlang
{listeners, [
{mqtt, 1883, [
%% Plain MQTT
{listener, mqtt, 1883, [
...
]},
]}.
{mqtts, 8883, [
%% MQTT/SSL
{listener, mqtts, 8883, [
...
]},
]}.
%% HTTP and WebSocket Listener
{http, 8083, [
{listener, http, 8083, [
...
]}
]},
]}.
The 18083 port is used by Web Dashboard of the broker. Default login: admin, Password: public
@ -255,7 +256,7 @@ Two main configuration files of the emqttd broker:
+-------------------+-----------------------------------+
| etc/vm.args | Erlang VM Arguments |
+-------------------+-----------------------------------+
| etc/emqttd.config | emqttd broker Config |
| etc/emqttd.conf | emqttd broker Config |
+-------------------+-----------------------------------+
Two important parameters in etc/vm.args:
@ -277,17 +278,18 @@ The maximum number of allowed MQTT clients:
.. code-block:: erlang
{listeners, [
{mqtt, 1883, [
%% TCP Acceptor Pool
%% Plain MQTT
{listener, mqtt, 1883, [
%% Size of acceptor pool
{acceptors, 16},
%% Maximum number of concurrent MQTT clients
%% Maximum number of concurrent clients
{max_clients, 8192},
...
]},
]}.
.. _init_d_emqttd:

393
docs/source/plugins.rst
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@ -7,24 +7,28 @@ Plugins
The emqttd broker could be extended by plugins. Users could develop plugins to customize authentication, ACL and functions of the broker, or integrate the broker with other systems.
The plugins that emqtt project released:
The plugins that emqttd 2.0 released:
+---------------------------+---------------------------+
| Plugin | Description |
+===========================+===========================+
| `emqttd_dashboard`_ | Web Dashboard |
+---------------------------+---------------------------+
| `emqttd_plugin_template`_ | Template Plugin |
+---------------------------+---------------------------+
| `emqttd_dashboard`_ | Web Dashboard |
| `emqttd_auth_ldap`_ | LDAP Auth |
+---------------------------+---------------------------+
| `emqttd_auth_http`_ | HTTP Auth/ACL Plugin |
+---------------------------+---------------------------+
| `emqttd_plugin_mysql`_ | MySQL Auth/ACL Plugin |
| `emqttd_auth_mysql`_ | MySQL Auth/ACL Plugin |
+---------------------------+---------------------------+
| `emqttd_plugin_pgsql`_ | PostgreSQL Auth/ACL Plugin|
| `emqttd_auth_pgsql`_ | PostgreSQL Auth/ACL Plugin|
+---------------------------+---------------------------+
| `emqttd_plugin_redis`_ | Redis Auth/ACL Plugin |
| `emqttd_auth_redis`_ | Redis Auth/ACL Plugin |
+---------------------------+---------------------------+
| `emqttd_plugin_mongo`_ | MongoDB Auth/ACL Plugin |
| `emqttd_auth_mongo`_ | MongoDB Auth/ACL Plugin |
+---------------------------+---------------------------+
| `emqttd_sn`_ | MQTT-SN Protocol Plugin |
+---------------------------+---------------------------+
| `emqttd_stomp`_ | STOMP Protocol Plugin |
+---------------------------+---------------------------+
@ -39,17 +43,9 @@ The plugins that emqtt project released:
emqttd_plugin_template - Template Plugin
----------------------------------------
A plugin is just a normal Erlang application under the 'emqttd/plugins' folder. Each plugin has e configuration file: 'etc/plugin.config'.
A plugin is just a normal Erlang application which has its own configuration file: 'etc/<PluginName>.config'.
plugins/emqttd_plugin_template is a demo plugin. The folder structure:
+------------------------+---------------------------+
| File | Description |
+========================+===========================+
| etc/plugin.config | Plugin config file |
+------------------------+---------------------------+
| ebin/ | Erlang program files |
+------------------------+---------------------------+
emqttd_plugin_template is a demo plugin.
Load, unload Plugin
-------------------
@ -78,22 +74,51 @@ The Web Dashboard for emqttd broker. The plugin will be loaded automatically whe
.. image:: _static/images/dashboard.png
Configure Dashboard
-------------------
Configure Dashboard Plugin
--------------------------
emqttd_dashboard/etc/plugin.config:
etc/plugins/emqttd_dashboard.conf:
.. code-block:: erlang
[
{emqttd_dashboard, [
{listener,
{emqttd_dashboard, 18083, [
{dashboard, 18083, [
{acceptors, 4},
{max_clients, 512}]}
}
{max_clients, 512}
]}
].
}.
----------------------------------
emqttd_auth_ldap: LDAP Auth Plugin
----------------------------------
LDAP Auth Plugin: https://github.com/emqtt/emqttd_auth_ldap
.. NOTE:: Supported in 2.0-beta1 release
Configure LDAP Plugin
---------------------
etc/plugins/emqttd_auth_ldap.conf:
.. code-block:: erlang
{ldap, [
{servers, ["localhost"]},
{port, 389},
{timeout, 30},
{user_dn, "uid=$u,ou=People,dc=example,dc=com"},
{ssl, fasle},
{sslopts, [
{certfile, "ssl.crt"},
{keyfile, "ssl.key"}
]}
]}.
Load LDAP Plugin
----------------
./bin/emqttd_ctl plugins load emqttd_auth_ldap
---------------------------------------
emqttd_auth_http - HTTP Auth/ACL Plugin
@ -103,14 +128,12 @@ MQTT Authentication/ACL with HTTP API: https://github.com/emqtt/emqttd_auth_http
.. NOTE:: Supported in 1.1 release
Configure emqttd_auth_http/etc/plugin.config
--------------------------------------------
Configure HTTP Auth/ACL Plugin
------------------------------
.. code:: erlang
etc/plugins/emqttd_auth_http.conf:
[
{emqttd_auth_http, [
.. code-block:: erlang
%% Variables: %u = username, %c = clientid, %a = ipaddress, %t = topic
@ -121,7 +144,7 @@ Configure emqttd_auth_http/etc/plugin.config
{username, "%u"},
{clientid, "%c"}
]}
]},
]}.
{auth_req, [
{method, post},
@ -131,7 +154,7 @@ Configure emqttd_auth_http/etc/plugin.config
{username, "%u"},
{password, "%P"}
]}
]},
]}.
%% 'access' parameter: sub = 1, pub = 2
@ -145,19 +168,17 @@ Configure emqttd_auth_http/etc/plugin.config
{ipaddr, "%a"},
{topic, "%t"}
]}
]}
]}
]}.
].
HTTP API
--------
HTTP Auth/ACL API
-----------------
Return 200 if ok
Return 4xx if unauthorized
Load emqttd_auth_http plugin
Load HTTP Auth/ACL Plugin
----------------------------
.. code:: bash
@ -211,21 +232,17 @@ MQTT ACL Table
(6,1,'127.0.0.1',NULL,NULL,2,'#'),
(7,1,NULL,'dashboard',NULL,1,'$SYS/#');
Configure emqttd_plugin_mysql/etc/plugin.config
-----------------------------------------------
Configure MySQL Auth/ACL Plugin
-------------------------------
Configure MySQL host, username, password and database:
etc/plugins/emqttd_plugin_mysql.conf:
.. code-block:: erlang
[
{emqttd_plugin_mysql, [
{mysql_pool, [
%% ecpool options
%% pool options
{pool_size, 8},
{auto_reconnect, 3},
{auto_reconnect, 1},
%% mysql options
{host, "localhost"},
@ -233,42 +250,39 @@ Configure MySQL host, username, password and database:
{user, ""},
{password, ""},
{database, "mqtt"},
{encoding, utf8}
]},
{encoding, utf8},
{keep_alive, true}
]}.
%% Variables: %u = username, %c = clientid, %a = ipaddress
%% Superuser Query
{superquery, "select is_superuser from mqtt_user where username = '%u' limit 1"},
{superquery, "select is_superuser from mqtt_user where username = '%u' limit 1"}.
%% Authentication Query: select password only
{authquery, "select password from mqtt_user where username = '%u' limit 1"},
{authquery, "select password from mqtt_user where username = '%u' limit 1"}.
%% hash algorithm: plain, md5, sha, sha256, pbkdf2?
{password_hash, sha256},
{password_hash, sha256}.
%% select password with salt
%% {authquery, "select password, salt from mqtt_user where username = '%u'"},
%% {authquery, "select password, salt from mqtt_user where username = '%u'"}.
%% sha256 with salt prefix
%% {password_hash, {salt, sha256}},
%% {password_hash, {salt, sha256}}.
%% sha256 with salt suffix
%% {password_hash, {sha256, salt}},
%% {password_hash, {sha256, salt}}.
%% '%a' = ipaddress, '%u' = username, '%c' = clientid
%% Comment this query, the acl will be disabled
{aclquery, "select allow, ipaddr, username, clientid, access, topic from mqtt_acl where ipaddr = '%a' or username = '%u' or username = '$all' or clientid = '%c'"},
{aclquery, "select allow, ipaddr, username, clientid, access, topic from mqtt_acl where ipaddr = '%a' or username = '%u' or username = '$all' or clientid = '%c'"}.
%% If no ACL rules matched, return...
{acl_nomatch, allow}
{acl_nomatch, allow}.
]}
].
Load emqttd_plugin_mysql plugin
-------------------------------
Load MySQL Auth/ACL plugin
--------------------------
.. code-block:: bash
@ -280,8 +294,8 @@ emqttd_plugin_pgsql - PostgreSQL Auth/ACL Plugin
MQTT Authentication, ACL with PostgreSQL Database.
MQTT User Table
---------------
Postgre MQTT User Table
-----------------------
.. code-block:: sql
@ -293,8 +307,8 @@ MQTT User Table
salt character varying(40)
);
MQTT ACL Table
--------------
Postgre MQTT ACL Table
----------------------
.. code-block:: sql
@ -317,19 +331,17 @@ MQTT ACL Table
(6,1,'127.0.0.1',NULL,NULL,2,'#'),
(7,1,NULL,'dashboard',NULL,1,'$SYS/#');
Configure emqttd_plugin_pgsql/etc/plugin.config
Configure Postgre Auth/ACL Plugin
-----------------------------------------------
Plugin Config: etc/plugins/emqttd_plugin_pgsql.conf.
Configure host, username, password and database of PostgreSQL:
.. code-block:: erlang
[
{emqttd_plugin_pgsql, [
{pgsql_pool, [
%% ecpool options
%% pool options
{pool_size, 8},
{auto_reconnect, 3},
@ -341,43 +353,40 @@ Configure host, username, password and database of PostgreSQL:
{password, ""},
{database, "mqtt"},
{encoding, utf8}
]},
]}.
%% Variables: %u = username, %c = clientid, %a = ipaddress
%% Superuser Query
{superquery, "select is_superuser from mqtt_user where username = '%u' limit 1"},
{superquery, "select is_superuser from mqtt_user where username = '%u' limit 1"}.
%% Authentication Query: select password only
{authquery, "select password from mqtt_user where username = '%u' limit 1"},
{authquery, "select password from mqtt_user where username = '%u' limit 1"}.
%% hash algorithm: plain, md5, sha, sha256, pbkdf2?
{password_hash, sha256},
{password_hash, sha256}.
%% select password with salt
%% {authquery, "select password, salt from mqtt_user where username = '%u'"},
%% {authquery, "select password, salt from mqtt_user where username = '%u'"}.
%% sha256 with salt prefix
%% {password_hash, {salt, sha256}},
%% {password_hash, {salt, sha256}}.
%% sha256 with salt suffix
%% {password_hash, {sha256, salt}},
%% {password_hash, {sha256, salt}}.
%% Comment this query, the acl will be disabled. Notice: don't edit this query!
{aclquery, "select allow, ipaddr, username, clientid, access, topic from mqtt_acl
where ipaddr = '%a' or username = '%u' or username = '$all' or clientid = '%c'"},
{aclquery, "select allow, ipaddr, username, clientid, access, topic from mqtt_acl where ipaddr = '%a' or username = '%u' or username = '$all' or clientid = '%c'"}.
%% If no rules matched, return...
{acl_nomatch, allow}
]}
].
{acl_nomatch, allow}.
Load emqttd_plugin_pgsql Plugin
-------------------------------
Load Postgre Auth/ACL Plugin
-----------------------------
.. code-block:: bash
./bin/emqttd_ctl plugins load emqttd_plugin_pgsql
./bin/emqttd_ctl plugins load emqttd_auth_pgsql
-------------------------------------------
emqttd_plugin_redis - Redis Auth/ACL Plugin
@ -385,58 +394,56 @@ emqttd_plugin_redis - Redis Auth/ACL Plugin
MQTT Authentication, ACL with Redis: https://github.com/emqtt/emqttd_plugin_redis
Configure emqttd_plugin_redis/etc/plugin.config
-----------------------------------------------
Configure Redis Auth/ACL Plugin
-------------------------------
etc/plugins/emqttd_auth_redis.conf:
.. code-block:: erlang
[
{emqttd_plugin_redis, [
{eredis_pool, [
%% ecpool options
{redis_pool, [
%% pool options
{pool_size, 8},
{auto_reconnect, 2},
%% eredis options
%% redis options
{host, "127.0.0.1"},
{port, 6379},
{database, 0},
{password, ""}
]},
]}.
%% Variables: %u = username, %c = clientid
%% HMGET mqtt_user:%u is_superuser
{supercmd, ["HGET", "mqtt_user:%u", "is_superuser"]},
{supercmd, ["HGET", "mqtt_user:%u", "is_superuser"]}.
%% HMGET mqtt_user:%u password
{authcmd, ["HGET", "mqtt_user:%u", "password"]},
{authcmd, ["HGET", "mqtt_user:%u", "password"]}.
%% Password hash algorithm: plain, md5, sha, sha256, pbkdf2?
{password_hash, sha256},
{password_hash, sha256}.
%% SMEMBERS mqtt_acl:%u
{aclcmd, ["SMEMBERS", "mqtt_acl:%u"]},
{aclcmd, ["SMEMBERS", "mqtt_acl:%u"]}.
%% If no rules matched, return...
{acl_nomatch, deny},
{acl_nomatch, deny}.
%% Load Subscriptions form Redis when client connected.
{subcmd, ["HGETALL", "mqtt_subs:%u"]}
]}
].
{subcmd, ["HGETALL", "mqtt_subs:%u"]}.
User HASH
---------
Redis User HASH
---------------
Set a 'user' hash with 'password' field, for example::
HSET mqtt_user:<username> is_superuser 1
HSET mqtt_user:<username> password "passwd"
ACL Rule SET
------------
Redis ACL Rule SET
------------------
The plugin uses a redis SET to store ACL rules::
@ -444,8 +451,8 @@ The plugin uses a redis SET to store ACL rules::
SADD mqtt_acl:<username> "subscribe topic2"
SADD mqtt_acl:<username> "pubsub topic3"
Subscription HASH
-----------------
Redis Subscription HASH
-----------------------
The plugin can store static subscriptions in a redis Hash::
@ -453,12 +460,12 @@ The plugin can store static subscriptions in a redis Hash::
HSET mqtt_subs:<username> topic2 1
HSET mqtt_subs:<username> topic3 2
Load emqttd_plugin_redis Plugin
-------------------------------
Load Redis Auth/ACL Plugin
--------------------------
.. code-block:: bash
./bin/emqttd_ctl plugins load emqttd_plugin_redis
./bin/emqttd_ctl plugins load emqttd_auth_redis
---------------------------------------------
emqttd_plugin_mongo - MongoDB Auth/ACL Plugin
@ -466,55 +473,51 @@ emqttd_plugin_mongo - MongoDB Auth/ACL Plugin
MQTT Authentication, ACL with MongoDB: https://github.com/emqtt/emqttd_plugin_mongo
Configure emqttd_plugin_mongo/etc/plugin.config
-----------------------------------------------
Configure MongoDB Auth/ACL Plugin
---------------------------------
etc/plugins/emqttd_plugin_mongo.conf:
.. code-block:: erlang
[
{emqttd_plugin_mongo, [
{mongo_pool, [
{pool_size, 8},
{auto_reconnect, 3},
%% Mongodb Driver Opts
%% Mongodb Opts
{host, "localhost"},
{port, 27017},
%% {login, ""},
%% {password, ""},
{database, "mqtt"}
]},
]}.
%% Variables: %u = username, %c = clientid
%% Superuser Query
{superquery, [
{superquery, pool, [
{collection, "mqtt_user"},
{super_field, "is_superuser"},
{selector, {"username", "%u"}}
]},
]}.
%% Authentication Query
{authquery, [
{authquery, pool, [
{collection, "mqtt_user"},
{password_field, "password"},
%% Hash Algorithm: plain, md5, sha, sha256, pbkdf2?
{password_hash, sha256},
{selector, {"username", "%u"}}
]},
]}.
%% ACL Query: "%u" = username, "%c" = clientid
{aclquery, [
{aclquery, pool, [
{collection, "mqtt_acl"},
{selector, {"username", "%u"}}
]},
]}.
%% If no ACL rules matched, return...
{acl_nomatch, deny}
]}
].
{acl_nomatch, deny}.
MongoDB Database
----------------
@ -526,8 +529,8 @@ MongoDB Database
db.createCollection("mqtt_acl")
db.mqtt_user.ensureIndex({"username":1})
User Collection
---------------
MongoDB User Collection
-----------------------
.. code-block:: json
@ -543,8 +546,8 @@ For example::
db.mqtt_user.insert({username: "test", password: "password hash", is_superuser: false})
db.mqtt_user:insert({username: "root", is_superuser: true})
ACL Collection
--------------
MongoDB ACL Collection
----------------------
.. code-block:: json
@ -561,12 +564,34 @@ For example::
db.mqtt_acl.insert({username: "test", publish: ["t/1", "t/2"], subscribe: ["user/%u", "client/%c"]})
db.mqtt_acl.insert({username: "admin", pubsub: ["#"]})
Load emqttd_plugin_mongo Plugin
-------------------------------
Load MongoDB Auth/ACL Plugin
----------------------------
.. code-block:: bash
./bin/emqttd_ctl plugins load emqttd_plugin_mongo
./bin/emqttd_ctl plugins load emqttd_auth_mongo
---------------------------
emqttd_sn: MQTT-SN Protocol
--------------------------
MQTT-SN Protocol/Gateway Plugin.
Configure MQTT-SN Plugin
-------------------------
.. NOTE:: UDP Port for MQTT-SN: 1884
etc/plugins/emqttd_sn.conf::
{listener, {1884, []}}.
Load MQTT-SN Plugin
-------------------
.. code::
./bin/emqttd_ctl plugins load emqttd_sn
-----------------------------
emqttd_stomp - STOMP Protocol
@ -574,48 +599,41 @@ emqttd_stomp - STOMP Protocol
Support STOMP 1.0/1.1/1.2 clients to connect to emqttd broker and communicate with MQTT Clients.
Configure emqttd_stomp/etc/plugin.config
----------------------------------------
Configure Stomp Plugin
----------------------
etc/plugins/emqttd_stomp.conf:
.. NOTE:: Default Port for STOMP Protocol: 61613
.. code-block:: erlang
[
{emqttd_stomp, [
{default_user, [
{login, "guest"},
{passcode, "guest"}
]},
]}.
{allow_anonymous, true},
{allow_anonymous, true}.
%%TODO: unused...
{frame, [
{max_headers, 10},
{max_header_length, 1024},
{max_body_length, 8192}
]},
]}.
{listeners, [
{emqttd_stomp, 61613, [
{listener, emqttd_stomp, 61613, [
{acceptors, 4},
{max_clients, 512}
]}
]}
]}.
]}
].
Load emqttd_stomp Plugin
------------------------
Load Stomp Plugin
-----------------
.. code-block:: bash
./bin/emqttd_ctl plugins load emqttd_stomp
-----------------------------------
emqttd_sockjs - STOMP/SockJS Plugin
-----------------------------------
@ -629,18 +647,21 @@ Configure emqttd_sockjs
.. code-block:: erlang
[
{emqttd_sockjs, [
{sockjs, []}.
{sockjs, []},
{cowboy_listener, {stomp_sockjs, 61616, 4}},
{cowboy_listener, {stomp_sockjs, 61616, 4}}.
%% TODO: unused...
{stomp, [
{frame, [
{max_headers, 10},
{max_header_length, 1024},
{max_body_length, 8192}
]}
].
]}.
Load emqttd_sockjs Plugin
-------------------------
Load SockJS Plugin
------------------
.. NOTE:: emqttd_stomp Plugin required.
@ -661,8 +682,8 @@ emqttd_recon - Recon Plugin
The plugin loads `recon`_ library on a running emqttd broker. Recon libray helps debug and optimize an Erlang application.
Load emqttd_recon Plugin
------------------------
Load Recon Plugin
-----------------
.. code-block:: bash
@ -689,8 +710,8 @@ Erlang Module Reloader for Development
.. NOTE:: Don't load the plugin in production!
Load emqttd_reloader Plugin
---------------------------
Load 'Reloader' Plugin
----------------------
.. code-block:: bash
@ -712,15 +733,22 @@ Plugin Development Guide
Create a Plugin Project
-----------------------
Clone emqttd source from github.com::
Clone emqttd_plugin_template source from github.com::
git clone https://github.com/emqtt/emqttd.git
git clone https://github.com/emqtt/emqttd_plugin_template.git
Create a plugin project under 'plugins' folder::
Create a plugin project with erlang.mk and depends on 'emqttd' application, the 'Makefile'::
cd plugins && mkdir emqttd_my_plugin
PROJECT = emqttd_plugin_abc
PROJECT_DESCRIPTION = emqttd abc plugin
PROJECT_VERSION = 1.0
cd emqttd_my_plugin && rebar create-app appid=emqttd_my_plugin
DEPS = emqttd
dep_emqttd = git https://github.com/emqtt/emqttd emq20
COVER = true
include erlang.mk
Template Plugin: https://github.com/emqtt/emqttd_plugin_template
@ -735,7 +763,7 @@ emqttd_auth_demo.erl - demo authentication module:
-behaviour(emqttd_auth_mod).
-include("../../../include/emqttd.hrl").
-include_lib("emqttd/include/emqttd.hrl").
-export([init/1, check/3, description/0]).
@ -754,7 +782,7 @@ emqttd_acl_demo.erl - demo ACL module:
-module(emqttd_acl_demo).
-include("../../../include/emqttd.hrl").
-include_lib("emqttd/include/emqttd.hrl").
%% ACL callbacks
-export([init/1, check_acl/2, reload_acl/1, description/0]).
@ -830,7 +858,7 @@ emqttd_cli_demo.erl:
-module(emqttd_cli_demo).
-include("../../../include/emqttd_cli.hrl").
-include_lib("emqttd/include/emqttd_cli.hrl").
-export([cmd/1]).
@ -850,13 +878,14 @@ There will be a new CLI after the plugin loaded::
./bin/emqttd_ctl cmd arg1 arg2
.. _emqttd_dashboard: https://github.com/emqtt/emqttd_dashboard
.. _emqttd_auth_ldap: https://github.com/emqtt/emqttd_auth_ldap
.. _emqttd_auth_http: https://github.com/emqtt/emqttd_auth_http
.. _emqttd_plugin_mysql: https://github.com/emqtt/emqttd_plugin_mysql
.. _emqttd_plugin_pgsql: https://github.com/emqtt/emqttd_plugin_pgsql
.. _emqttd_plugin_redis: https://github.com/emqtt/emqttd_plugin_redis
.. _emqttd_plugin_mongo: https://github.com/emqtt/emqttd_plugin_mongo
.. _emqttd_auth_mysql: https://github.com/emqtt/emqttd_plugin_mysql
.. _emqttd_auth_pgsql: https://github.com/emqtt/emqttd_plugin_pgsql
.. _emqttd_auth_redis: https://github.com/emqtt/emqttd_plugin_redis
.. _emqttd_auth_mongo: https://github.com/emqtt/emqttd_plugin_mongo
.. _emqttd_sn: https://github.com/emqtt/emqttd_sn
.. _emqttd_stomp: https://github.com/emqtt/emqttd_stomp
.. _emqttd_sockjs: https://github.com/emqtt/emqttd_sockjs
.. _emqttd_recon: https://github.com/emqtt/emqttd_recon