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Configuration properties involved:
coar-notify.enabled = true|false | show/hide the COAR Notify logo in the footer linked to the informative page; used also in the authorization feature at java class org.dspace.app.rest.authorization.impl.CoarNotifyEnabled |
ldn.enabled = true|false | true => message is received and managed false => message is refuced and the server respond with an HTTP 404 |
ldn.notify.inbox = DSpace\url\address\ | where the ldn inbox rest service is mapped. IE: ${dspace.server.url}/ldn/inbox |
coar-notify.ip-range.enabled = true|false | enables the filter on the IP of the sender (external) for received ldn message (into the DSpace ldn inbox) |
Relation with the Quality Assurance Correction Service
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LDN incoming messages are stored into the ldn_message database table. The incoming LDN messages is stored into a logical queue. The queue_status column of the table contains the status of the LDN message inside the queue. All the possible queue_status values are described into the java class org.dspace.app.ldn.LDNMessageEntity as integer constants.
QUEUE_STATUS_UNTRUSTED_IP QUEUE_STATUS_UNTRUSTED | the message must not be enrouted |
| QUEUE_STATUS_QUEUED | the message needs to be evaluated by the Extractor |
| QUEUE_STATUS_PROCESSING | the message is currently being evaluated by the extractor |
| QUEUE_STATUS_PROCESSED | the message has been already evaluated |
| QUEUE_STATUS_FAILED | the message has been evaluated but its routing has failed |
If valued as queued the LDN message will be processed.
LDN Message logical queue is managed by:
- The LDN Message Extractor is an asynchronous DSpace task that reads the oldest manageable LDN message and
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- enroute it to
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- the LDN Router; the extractor instance ends as soon as the LDN message extracted is routed and processed or failed
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- . For each tentative the attempts counter of the message is increased by 1 and the timeout is increased by X minutes, where X= the value of the configuration property ldn.processor.queue.msg.timeout | defaulted to 60.
- The LDN Message Timeout Checker is an asynchronous DSpace task that looks for timed-out messages with attempts less than Y, where Y= the value of the configuration property ldn.processor.max.attempts.
Please consider that this means that the corresponding QAEvent is not automatically created! The corresponding QAEvent is created by the processor instance of the LDN message, invoked by the extractor.
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