+
Overview of AFB-DAEMON
======================
- version: 1
- Date: 30 mai 2016
- Author: José Bollo
-
-
Roles of afb-daemon
-------------------
<a id="binder-fig-basis"><h4>Figure: binder afb-daemon, basis</h4></a>
- . . . . . . . . . . . . . . . . . . . . . . . . . .
- . Isolated security context .
- . .
- . +------------------------------+ .
- . | | .
- . | A P P L I C A T I O N | .
- . | | .
- . +--------------+---------------+ .
- . | .
- . | .
- . +-------------------+----------------------+ .
- . | : | .
- . | b i n d e r : | .
- . | A F B - D A E M O N : PLUGINS | .
- . | : | .
- . +-------------------+----------------------+ .
- . | .
- . . . . . . . . . . . . | . . . . . . . . . . . . .
- |
- v
- AGL SYSTEM
+![binder-basis][binder-basis]
The application and its companion binder run in secured and isolated
environment set for them. Applications are intended to access to AGL
### Remotely running application
-One of the most interresting aspect of using the binder afb-daemon
+One of the most interesting aspect of using the binder afb-daemon
is the ability to run applications remotely. This feature is
possible because the binder afb-daemon implements native web
protocols.
-So the [figure binder, basis](#binder-fig-1) would become
+So the [figure binder, basis](#binder-fig-basis) would become
when the application is run remotely:
<a id="binder-fig-remote"><h4>Figure: binder afb-daemon and remotely running application</h4></a>
- +------------------------------+
- | |
- | A P P L I C A T I O N |
- | |
- +--------------+---------------+
- |
- ~ ~ ~ ~ ~ ~
- : NETWORK :
- ~ ~ ~ ~ ~ ~
- |
- . . . . . . . . . . . . . . | . . . . . . . . . . . . . .
- . Isolated security | .
- . context | .
- . | .
- . . . . . . . . . . . . . . . . . . . . . . . . . .
- . . . .
- . . F I R E W A L L . .
- . . . .
- . . . . . . . . . . . . . . . . . . . . . . . . . .
- . | .
- . +-------------------+----------------------+ .
- . | : | .
- . | A F B - D A E M O N : PLUGINS | .
- . | : | .
- . +-------------------+----------------------+ .
- . | .
- . . . . . . . . . . . . . . | . . . . . . . . . . . . . .
- |
- v
- AGL SYSTEM
### Adding native features to HTML5/QML applications
-Applications can provide with their packaged delivery a plugin.
-That plugin will be instanciated for each application instance.
-The methods of the plugin will be accessible by applications and
-will be excuted within the security context.
+Applications can provide with their packaged delivery a binding.
+That binding will be instantiated for each application instance.
+The methods of the binding will be accessible by applications and
+will be executed within the security context.
### Offering services to the system
It is possible to run the binder afb-daemon as a daemon that provides the
-API of its plugins.
+API of its bindings.
This will be used for:
<a id="binder-fig-remote"><h4>Figure: binder afb-daemon for services</h4></a>
- . . . . . . . . . . . . . . . . . . . . . .
- . Isolated security context application .
- . .
- . +------------------------------+ .
- . | | .
- . | A P P L I C A T I O N | .
- . | | .
- . +--------------+---------------+ . . . . . . . . . . . . . . . . . . . . . . .
- . | . . Isolated security context A .
- . | . . .
- . +-----------------+------------------+ . . +------------------------------------+ .
- . | : | . . | : | .
- . | b i n d e r : | . . | b i n d e r : service | .
- . | A F B - D A E M O N : PLUGINS | . . | A F B - D A E M O N : PLUGINS | .
- . | : | . . | : A | .
- . +-----------------+------------------+ . . +-----------------+------------------+ .
- . | . . | .
- . . . . . . . . . . | . . . . . . . . . . . . . . . . . . . . . | . . . . . . . . . . .
- | |
- v v
- ================================================================================
- D - B U S & C Y N A R A
- ================================================================================
- ^ ^
- | |
- . . . . . . . . . . | . . . . . . . . . . . . . . . . . . . . . | . . . . . . . . . . .
- . | . . | .
- . +-----------------+------------------+ . . +-----------------+------------------+ .
- . | : | . . | : | .
- . | b i n d e r : service | . . | b i n d e r : service | .
- . | A F B - D A E M O N : PLUGINS | . . | A F B - D A E M O N : PLUGINS | .
- . | : B | . . | : C | .
- . +------------------------------------+ . . +------------------------------------+ .
- . . . .
- . Isolated security context B . . Isolated security context C .
- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-
+![afb-for-services][afb-for-services]
For this case, the binder afb-daemon takes care to attribute one single session
-context to each client instance. It allows plugins to store and retrieve data
+context to each client instance. It allows bindings to store and retrieve data
associated to each of its client.
-The plugins of the binder afb-daemon
+The bindings of the binder afb-daemon
------------------------------------
-The binder can instanciate plugins. The primary use of plugins
+The binder can instantiate bindings. The primary use of bindings
is to add native methods that can be accessed by applications
written with any language through web technologies ala JSON RPC.
3. provide customers services
-A specific document explains how to write an afb-daemon binder plugin:
-[HOWTO WRITE a PLUGIN for AFB-DAEMON](afb-plugin-writing.html)
+A specific document explains how to write an afb-daemon binder binding:
+[HOWTO WRITE a BINDING for AFB-DAEMON](afb-bindings-writing.html)
Launching the binder afb-daemon
HTML Root API URL [default /api]
- The plugins are available within that url.
+ The bindings are available within that url.
--alias=xxxx
--apitimeout=xxxx
- Plugin API timeout in seconds [default 20]
+ binding API timeout in seconds [default 20]
Defines how many seconds maximum a method is allowed to run.
0 means no limit.
--ldpaths=xxxx
- Load Plugins from given paths separated by colons
- as for dir1:dir2:plugin1.so:... [default = $libdir/afb]
+ Load bindings from given paths separated by colons
+ as for dir1:dir2:binding1.so:... [default = $libdir/afb]
- You can mix path to directories and to plugins.
+ You can mix path to directories and to bindings.
The sub-directories of the given directories are searched
recursively.
- The plugins are the files terminated by '.so' (the extension
+ The bindings are the files terminated by '.so' (the extension
so denotes shared object) that contain the public entry symbol.
- --plugin=xxxx
+ --binding=xxxx
- Load the plugin of given path.
+ Load the binding of given path.
--token=xxxx
Provides a binder afb-daemon service through dbus.
- The name xxxx must be the name of an API defined by a plugin.
+ The name xxxx must be the name of an API defined by a binding.
This API is exported through DBUS.
--foreground
- Make the service connection using WebSocket not DBUS.
-- Management of targetted events.
+- Management of targeted events.
-- Securisation of LOA.
+- Securing LOA.
- Integration of the protocol JSON-RPC for the websockets.
-
+[binder-basis]: pictures/AFB_overview.svg
+[afb-for-services]: pictures/AFB_for_services.svg
Code Review / src / app-framework-binder.git / blobdiff