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https://issues.apache.org/jira/browse/SYNCOPE-855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15288645#comment-15288645
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Francesco Chicchiriccò commented on SYNCOPE-855:
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Some ConnId connector bundles require adjustment to behave correctly:
* https://connid.atlassian.net/browse/AD-55
* https://connid.atlassian.net/browse/CSVDIR-14
> Synchronization token management enhancement in case of errors
> --------------------------------------------------------------
>
> Key: SYNCOPE-855
> URL: https://issues.apache.org/jira/browse/SYNCOPE-855
> Project: Syncope
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.2.7, 2.0.0-M2
> Reporter: Francesco Chicchiriccò
> Assignee: Francesco Chicchiriccò
> Fix For: 1.2.8, 2.0.0
>
>
> The overall logic of the synchronization (1.2) / incremental pull (2.0)
> process can be summarized as:
> # invoke underlying connector's {{getLatestSyncToken}}
> # invoke underlying connector's {{sync}}
> # store the value for {{getLatestSyncToken}} for subsequent invocation
> As a consequence, when one synchronizing item ({{SyncDelta}}) generates an
> error, the whole process might be interrupted without saving the updated sync
> token, and next invocation will start again from the beginning, without
> considering the successful items passed before the error occurred.
> The process should be changed as follows, instead:
> # invoke underlying connector's {{getLatestSyncToken}}
> # invoke underlying connector's {{sync}}: for each {{SyncDelta}}, temporary
> store the related {{syncToken}} field;
> # store the last successful item's {{syncToken}} value - or
> {{getLatestSyncToken}} if no error occurred - for subsequent invocation
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