Hi,

Introducing these kind of changes in CAPI can easily cause build breaks or 
functional issues in verticals using Common. E.g. in IVI ICO HomeScreen and 
System Controller might require changes to work correctly when switching to new 
CAPI. Have you agreed on these changes together with all Application FW 
maintainers to ensure there’s alignment? Has there been public discussion about 
these CAPI changes before implementing and submitting them or have you 
identified dependencies and contacted development teams/maintainers to ensure 
changes takes place in a coordinated way also in client components? Of course 
testing e.g. ICO HS against changes done before submitting them would be nice 
too. My point is changing things without telling anybody beforehand is not very 
cool.

The correct way to notify developers can’t just be to send out an email after 
merging changes to Common and assume they implement required changes without 
any planning. This just does not work really well. We can decide not to accept 
intrusive changes in IVI for a while but unfortunately dependencies lead to 
growing delta quite fast. Of course I might have just missed the memo but in 
case not I really think next time CAPI used by verticals gets changed we must 
handle the changes in a more controlled manner.

-Matti-Pekka


From: Dev [mailto:[email protected]] On Behalf Of Baptiste Durand
Sent: Thursday, September 18, 2014 9:16 PM
To: [email protected]
Subject: [Dev] New changes : Application Framework

Hello all,

Since Today the Application Framework provides some news Core API.
& a new way to install applications
---------------------------------------------------------------------------------------------------------------------------------
CAPI Changes :

So what News?
Now in Tizen 3 we can install/uninstall  applications for dedicated user or for 
all users.
So the Tizen Database are duplicated.
Each User has it proper database that references all applications installed for 
himself (only) stored in $HOME/.applications/dbspace
The set Applications Databases  are also used to register applications for all 
user (common applications ) also called Global database stored in /usr/dbspace

In consequences, appid is not unique now.
Indeed an application can be installed for all user and in a same time for a 
dedicated user.
If a user makes a request to open an app (by using appid), the user's app are 
choosen even if an application with the same appid exists at Global level ( 
avaible for all users)
So now only the couple of value (appid, uid) is unique.

To include this, we has been needed to introduce new CAPI based on Tizen 2.X  
ones.
All functions fixed by _usr_ with an user id in parameters is related to 
applications or packages Database (depending of CAPI used) of the user
All functions with the same prototype of Tizen 2.X ones are related to 
Common/Systems Applications
We also introduce a Global User concept this user is a fictive one. (In Code, 
we can see some reference to a GLOBAL_USER)
it exist only for operating on Common Applications Databases.

To give an example of what is explain before, we have in application 
information library and pakcage manager library.
AIL :
ail_error_e ail_filter_list_usr_appinfo_foreach(ail_filter_h filter, 
ail_list_appinfo_cb appinfo_func, void *user_data, uid_t uid);

ail_error_e ail_filter_list_appinfo_foreach(ail_filter_h filter, 
ail_list_appinfo_cb appinfo_func, void *user_data);


-> ail_filter_list_appinfo_foreach permits to apply a filter on Common 
applications only (related to common applications).

-> ail_error_e ail_filter_list_usr_appinfo_foreach   permits to apply a filter 
on the applications dedicated to a user (choosen in parameters).

SLP-PKGMGR
int pkgmgr_client_usr_install(pkgmgr_client *pc, const char *pkg_type, const 
char *descriptor_path, const char *pkg_path, const char *optional_file, 
pkgmgr_mode mode, pkgmgr_handler event_cb, void *data, uid_t uid);

int pkgmgr_client_install(pkgmgr_client *pc, const char *pkg_type, const char 
*descriptor_path, const char *pkg_path, const char *optional_file, pkgmgr_mode 
mode, pkgmgr_handler event_cb, void *data, uid_t uid);


pkgmgr_client_usr_install is used to install an application for a dedicated user


pkgmgr_client_install is used to install an application for all users

We decide to duplicated the CAPI to distinguish Global level to User's level.
for two reasons;
-> make integration change easier
->satisfy a Core API usage in a Core Application Context. (see diagram 
architecture overview)

We do not consider :
pkgmgr_client_install  are equal to  pkgmgr_client_usr_install( getuid())
because
-> CAPI can be used ay System Level by daemon (and a daemon is often not 
associated to a regular user )

So we need to permits to manipulate database by offering two differents API 
(one for Global DB / 1 for user's ones).
We consider that this concept to take the current user in account should be 
done at HIGH Level API (ie WEB API or Native API) (see diagram architecture 
overview)

--------------------------------------------------------------------------------------------------------------------------------------
Pkgcmd new option / Backend for Widget Apps

We add ability  to install web apps through pkgmgr-server
so now pkgcmd binary is able to manage applications by using package Manager 
CAPI
we are going to add -G option that permits to install application for all 
users. (coming soon next week).


----------------------------------------------------------------------------------------------------------------------------------------

Please find in attachment the list of added CAPI

For your information :During The Linux Con at Dusseldorf Sabera Djelti will 
present a global overview of theses changes.


For additional informations : please take a look on the wiki
https://wiki.tizen.org/wiki/Multi-user_Architecture
https://wiki.tizen.org/wiki/Multi-user_AMD

BR

Baptiste and Sabera
--
Baptiste DURAND
Eurogiciel Vannes/FR
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