/[cvs]/nfo/perl/libs/Data/Transfer/Sync.pod

Diff of /nfo/perl/libs/Data/Transfer/Sync.pod

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-revision 1.2 by joko,
Sun Feb  9 04:56:22 2003 UTC
+revision 1.7 by joko,
Tue May 13 08:09:33 2003 UTC
 Line 1
  =pod
+ =head1 NAME
+   Data::Transfer::Sync
+ =head1 DESCRIPTION
+   Data::Transfer::Sync is a module providing a generic synchronization process
+   across arbitrary/multiple storages based on a ident/checksum mechanism.
+   It sits on top of Data::Storage.
  =head1 NEWS
+ =head4 2003-02-22  -  enabled multiple task in-process synchronization ...
+   x using Data::Rap and rap.pl
+   x broke sync.pl...
+   o ... re-enable via Data::Transfer::Sync::API::V1?
  =head4 2003-02-09  -  backward compatibility with custom application
    - Tangram <-> .csv
-Line 11
+Line 31
    - Tangram <-> perl-code
- =head4 2003-01-18  -  start integration with Torus
+ =head4 2003-01-18  -  started integration with Torus
    - MAPI <-> LDAP
-   - please look at http://www.netfrag.org/horde/chora/cvs.php/perl/scripts/outlook2ldap/
+   - please visit http://www.netfrag.org/horde/chora/cvs.php/perl/scripts/outlook2ldap/
  =head4 2002-10-10  -  initial commit
-Line 22
+Line 42
    - Tangram <-> mysql
+ =head1 ChangeLog
- =head1 DESCRIPTION
+-01/02    Refactoring:
+                           Split up Sync/Core.pm from Sync.pm.
+                           Split up functionality into sister modules.
-   Data::Transfer::Sync is a module providing a generic synchronization process
-   across arbitrary/multiple storages based on a ident/checksum mechanism.
-   It sits on top of Data::Storage.
+ =head1 REQUIREMENTS
+ =head3 dependencies
- =head1 REQUIREMENTS
+   from CPAN or (for win32) a ppm-repository:
+     App::Config (CPAN only)
+     Tie::IxHash
+     Log::Dispatch
+     Log::Dispatch::Config
+     mixin
+     Hash::Merge
+     Tie::SecureHash
+     Date::Manip
+     Digest::MD5
+     ... and maybe some more.
-   For full functionality:
+   from nfo/perl/libs:
      Data::Compare
      Data::Storage
      Data::Transform
-     ... and all their dependencies.
+     DesignPattern:: (to be renamed into Class::)
+     ... and all their dependencies. (like Data::UUID & Co.)
+ =head3 additional modules required for 'outlook2ldap'
+     Win32::OLE
+     Net::LDAP
+ =head3 additional modules required for 'db2db'
+     DBI
+     DBD::mysql
+     DBD::CSV
+     Tangram
  =head1 AUTHORS / COPYRIGHT / LICENSE
-   The Data::Transfer::Sync module is Copyright (c) 2002 Andreas Motl.
+   The Data::Transfer::Sync module is Copyright (c) 2002, 2003 Andreas Motl.
-   All rights reserved.
+   All Rights Reserved.
    Code contributions, suggestions, support and ideas by
-   Sebastian Utz <su@tunemedia.de> and Jan Hoffmann <jan@romain-volk.com>.
+   Sebastian Utz <su@tunemedia.de> and Jan Hoffmann <janosch@ultrajan.de>.
    You may distribute it under the terms of either the GNU General Public
    License or the Artistic License, as specified in the Perl README file.
+ =head1 COPYRIGHT NOTE
+   * CAESAR - Collaborative And Easy System ARchitecture
+   *
+   * Data Synchronization Module
+   *
+   * Permission to use, copy, modify and distribute this software and its
+   * documentation is hereby granted, provided that both the copyright
+   * notice and this permission notice appear in all copies of the
+   * software, derivative works or modified versions, and any portions
+   * thereof, and that both notices appear in supporting documentation.
+   *
+   * NETFRAG.ORG AND THE AUTHOR ALLOW FREE USE OF THIS SOFTWARE
+   * IN ITS "AS IS" CONDITION. WE DISCLAIM ANY LIABILITY OF ANY KIND
+   * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  =head1 SUPPORT / WARRANTY
    Data::Transfer::Sync is free software. IT COMES WITHOUT WARRANTY OF ANY KIND.
    Please feel free to contact me at <andreas.motl@ilo.de>.
+   Any improvements and contributions are greatly appreciated.
+   We have set up a newsgroup. (currently not much traffic)
+   Be welcome to visit news://news.netfrag.org/nfo.caesar or - if your system
+   lacks a newsreader - try http://news.netfrag.org/nfo.caesar .
+ =head1 TODO
+ =head4 overall
+   o try to get this stuff together with SyncML (http://syncml.org/) somehow ...?
+   o use CRC32 for checksum generation?
+ =head4 this code
+   o sub _resolveIdentProvider
+   x wrap _doModifySource and _doTransferTarget around a core function which can change virtually any type of node
+   x split this module up into Sync.pm, Sync/Core.pm, Sync/Compare.pm and Sync/Compare/Checksum.pm
+   o introduce _compareNodes as a core method and wrap it around methods in Sync/Compare/Checksum.pm
+   x introduce Sync/Compare/MyComparisonImplementation.pm
+   o some generic deferring method - e.g. "$self->defer(action)" - to be able to accumulate a bunch of actions for later processing
+      - this implies everything done is _really_ split up into generic actions - how else would we defer them???
+      - example uses:
+         - fetch whole checksum list from node
+         - remember source ident retransmits
+      - remember: this is convenient - and maybe / of course faster - but we'll loose "per-node-atomic" operations
+   o feature: mechanism to implicit inject checksum property to nodes (alter table / modify schema)
+   o expand statistics / keep track of:
+     - touched/untouched nodes
+   o full sync
+     - just do a push and a pull for now but use stats for touched nodes in between to speed up things
+   o introduce some new metadata flags for a descent
+     - isNewNodePropagator
+     x isWriteProtected
  =head1 EXAMPLE OUTPUT CHUNKS
  =head2 Synchronizing orm objects against entries in a .csv file - 17 items modified
-   notice: PULL INTO backend NODE * TYPE Country SELECT NODE * TYPE [n/a] FROM base USING MODULE BizWorks::ResourceMapping;
+   notice: PULL INTO backend NODE * TYPE Country SELECT NODE * TYPE [n/a] FROM base USING MODULE MyApp::ResourceMapping;
    notice: OEF::Script::AbstractFeeder:
        - Loading data of type [n/a] and
          filtered by * from the storage named base
-Line 76
+Line 180
    :c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:ctr:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c:ctr:c:c:ctr:c:c:c:c:c:c:c:c:c:c:c:c:c:c:c
    info: Data::Transfer::Sync::Core->_startsync: statistics: in_sync: 180  /  total: 197  /  attempt_modify: 17  /  ok: 17
- =head2 Synchronizing orm objects against entries in a .csv file - in-sync
+ =head2 Synchronizing orm objects against entries in a .csv file - all items in-sync
-   notice: PULL INTO backend NODE * TYPE Country SELECT NODE * TYPE [n/a] FROM base USING MODULE BizWorks::ResourceMapping;
+   notice: PULL INTO backend NODE * TYPE Country SELECT NODE * TYPE [n/a] FROM base USING MODULE MyApp::ResourceMapping;
    notice: OEF::Script::AbstractFeeder:
        - Loading data of type [n/a] and
          filtered by * from the storage named base
-Line 103
+Line 207
  =head4 Mapping
    - - - - - - - - - - - - - - - - - - - - - - - - - -
-   info: BizWorks::Process::Setup->syncResource( source_node Currency mode PULL erase 0 import 0 )critical: BizWorks::Process::Setup->startSync: Can't access mapping for node "Currency" - please check BizWorks::ResourceMapping.
+   info: MyApp::Process::Setup->syncResource( source_node Currency mode PULL erase 0 import 0 )critical: MyApp::Process::Setup->startSync: Can't access mapping for node "Currency" - please check MyApp::ResourceMapping.
    - - - - - - - - - - - - - - - - - - - - - - - - - -
    You have to create a sub for each node used in synchronization inside named Perl module. The name of this sub _must_ match
    the name of the node you want to sync. This sub holds mapping metadata to give the engine hints about how
-Line 114
+Line 218
  =head4 DBD::AutoCSV's rulebase
    - - - - - - - - - - - - - - - - - - - - - - - - - -
-   info: BizWorks::Process::Setup->syncResource( source_node Currency mode PULL erase 0 import 0 )
+   info: MyApp::Process::Setup->syncResource( source_node Currency mode PULL erase 0 import 0 )
    info: Data::Transfer::Sync->syncNodes: source=L/Currency <- target=R/currencies.csv
    Execution ERROR: Error while scanning: Missing first row or scanrule not applied. at C:/home/amo/develop/netfrag.org/nfo/perl/libs/DBD/CSV.p
-Line 173
+Line 277
    - - - - - - - - - - - - - - - - - - - - - - - - - -
- =head1 TODO
-   o sub _resolveIdentProvider
-   x wrap _doModifySource and _doTransferTarget around a core function which can change virtually any type of node
-   x split this module up into Sync.pm, Sync/Core.pm, Sync/Compare.pm and Sync/Compare/Checksum.pm
-   o introduce _compareNodes as a core method and wrap it around methods in Sync/Compare/Checksum.pm
-   x introduce Sync/Compare/MyComparisonImplementation.pm
-   o some generic deferring method - e.g. "$self->defer(action)" - to be able to accumulate a bunch of actions for later processing
-      - this implies everything done is _really_ split up into generic actions - how else would we defer them???
-      - example uses:
-         - fetch whole checksum list from node
-         - remember source ident retransmits
-      - remember: this is convenient - and maybe / of course faster - but we'll loose "per-node-atomic" operations
-   o feature: mechanism to implicit inject checksum property to nodes (alter table / modify schema)
-   o expand statistics / keep track of:
-     - touched/untouched nodes
-   o full sync
-     - just do a push and a pull for now but use stats for touched nodes in between to speed up things
-   o introduce some new metadata flags for a descent
-     - isNewNodePropagator
-     x isWriteProtected
  =cut

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