Data Synchronization in Netbooks, Desktops and Mobile Devices

Transcription

1 Data Synchronization in Netbooks, Desktops and Mobile Devices Patrick Ohly Copyright, 2010 Intel

2 Content Introduction to the problem SyncEvolution: upstream project, used in Moblin and MeeGo 1.0 Netbook Buteo: core sync component of MeeGo >= 1.1 2

3 Motivation Why Sync is important Using many different devices: PC, laptop, Netbook, cell phone, gadgets Must share data: calendar: notifications of upcoming events, schedule new appointments contacts: phone calls with cell phone, on PC, postcard while traveling Sync: local data => integrate into system with native apps modify anytime, anywhere, even while offline synchronize when online 3

4 Over The Air Sync SyncML Server Google, ScheduleWorld, Funambol, Memotoo, Mobical, Synthesis, Vodafone/ZYB, Oracle, Nokia Ovi.com, T-Mobile... Google SyncML (OMA DS): protocol vcard/vcalendar/icalendar: payload HTTP: transport SyncEvolution - Sync PIM (Contacts, Events, Tasks, Notes) 4

5 Direct Sync MeeGo Netbook 1.0 SyncEvolution 1.0: SyncML server OBEX/Bluetooth 5

6 SyncML Server SyncML Clients 6 Copyright, 2010 Intel PIM Sync Challenges: It can eat your data?!

7 PIM Sync + Interoperability Challenges 1.No globally unique ID. 2.Different representation of data inside clients. 3.Offline updates allowed: what is the most recent data? 4.Must support standard interchange formats, including legacy ones (vcalendar). 5.Must work with limited knowledge about peers (capabilities, behavior). 7

8 SyncML Server Convert data between clients Map between local IDs Handle conflicts: Fixed policy in HTTP servers More flexible in desktop apps?! Merge incomplete updates received from dumb clients with complete item on server 8

9 Synthesis Data Handling Specified via XML config: new data formats can reuse existing mechanisms. Field list declares internal format and key properties for matching items. Conversion to and from external formats via one or more profiles; can be parameterized. Can use modification time stamps and different conflict resolution policies (duplicate, merge). Uses Device Capabilities: solves the property removed or not supported? problem. 9

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11 History SyncEvolution - The Missing Link SyncEvolution: spare time project since 2006, full-time Platforms + Backends: Evolution/Moblin/MeeGo Netbook iphone+mac OS X (need maintainer) Maemo (Ove Kaaven: Maemo 5) KDE (under development) XMLRPC (m-otion), plain files, Since 1.0: direct synchronization 11

12 Synthesis Swiss company with >10y experience with SyncML, owned by the two main developers Synthesis SyncML Engine: C++ implementation of client and server, data merging and conversion Stable C API+ABI LGPL

13 GTK GUI D-Bus D-Bus Server Command Line CPPUnit Testing SyncEvolution Core Synthesis Glue GNOME Evolution Data Server Synthesis Core Synthesis Glue Evolution Backend D-Bus libecal/ebook transport lib HTTP(S) SyncML Server 13 libical Copyright, 2010 Intel

14 Peers contacting us Server Stubs Sync Engine + UIs Data Storage Transports Peers contacted by us SyncML Client (Netbook) HTTP POST Reply HTTP Daemon Evolution Data Server libsoup HTTP POST Reply SyncML Server (Internet) syncevo-dbus-server libopenobex OBEX PUT SyncML Server (Desktop) OBEX PUT OBEX GET OBEXD Panel Applet GUI: sync-ui OBEX GET SyncML Client (Phone) CLI: syncevolution Local Machine (Desktop, Netbook, Phone) 14

15 Buteo ( Hawk ) 15 Photo cc-by 2.0 Alan Vernon

16 Buteo History Developed by Nokia for Maemo Harmattan and Harmattan PIM storage Source available under LGPL + BSD since end of June 2010 Packages in MeeGo Trunk end of July, example Qt GUI added a bit later 16

17 sync app/settings D-Bus wrapper lib MeeGo Handset UX Buteo Framework msyncd hcontacts storage plugin hcalendar storage plugin SyncML sync plugin OBEX server plugin MTP sync plugin Buteo Plugins QtContacts KCalExtended Buteo SyncML libwbxml 17

18 SyncEvolution + Buteo Comparison Built around Synthesis SyncML engine Sync protocol are plugins Data conversion and sync logic provide by engine Several SyncML services supported and tested automatically User can add custom services Data conversion and sync logic in PIM storage [plugins] under discussion (BMC #4897) SyncML service support undecided (#3869), no automatic interoperability testing Services deployed by device operator via packages (#4941) 18

19 Getting Involved Let s dance sync 19

20 Getting Involved in SyncEvolution Mailing list, also on Gmane bugs.meego.com with enhancement ideas SyncML Client Do-it-yourself Style LWN.net article, long version on syncevolution.org 20

21 Getting Involved in Buteo meego-dev mailing list bugs.meego.com 21

22 any questions? 22

23 Legal information INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO SALE AND/OR USE OF INTEL PRODUCTS, INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel may make changes to specifications, product descriptions, and plans at any time, without notice. All dates provided are subject to change without notice. Intel is a trademark of Intel Corporation in the U.S. and other countries. *Other names and brands may be claimed as the property of others. Copyright 2010, Intel Corporation. All rights are protected 23 Friday, July 16, 2010 Copyright, 2010 Intel

24 see ya! 24