The DAM for Sitecore adds 4 new log files to you Sitecore instance. They are placed in the same folder as Sitecores log files.
dfs.log
dfs.request.log
dfs.assetinuse.log
dfs.digizuiteintegration.log
The configuration is placed in \App_Config\Include\damforsitecore\DFS.ClientLog4net.config under the node log4net. By default the log level is set to INFO for each of the tree files. If you need to debug a problem, you can set the log level to DEBUG and the module will print more into the log files.
DFS.LOG
This is the main log file for DAM for Sitecore. Here you will find errors, warnings and info about the synchronization.
DFS.REQUEST.LOG
This log file will not show anything in log level mode INFO. If you set it to DEBUG you will see all requests between Sitecore and Digizuite. This is useful if you wants to debug the communication between Sitecore and Digizuite.
DFS.ASSETINUSE.LOG
In this log file you will see if an media item (asset) has been deleted from the asset silo and the item was used in any content page.
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From this pipeline you can create you own processor and extend the functionality. Maybe you want to send an email to the administrator notifying that an asset has been deleted that was in use.
Then arguments in the pipeline contains the following properties:
AssetItemId (ID)
Item (Item)
AssetInUse (bool)
ContentItemsReferrers (List<string>)
DFS.DIGIZUITEINTEGRATION.LOG
In this log file you will see when ever the Digizuite sends notifications about asset updates and deletions.