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From "Sujen Shah (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (NUTCH-2132) Publisher/Subscriber model for Nutch to emit events
Date Tue, 02 Aug 2016 17:22:21 GMT

    [ https://issues.apache.org/jira/browse/NUTCH-2132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15404414#comment-15404414
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Sujen Shah edited comment on NUTCH-2132 at 8/2/16 5:21 PM:
-----------------------------------------------------------

It does not throw any exceptions, but when I check the number of plugins that are loaded its
0. So I dont know whats going wrong ? 

This is what I am using to load the plugins - https://github.com/sujen1412/nutch/blob/2c484ec4789c84f7bf9e592e15c96cf788ef5967/src/java/org/apache/nutch/publisher/NutchPublishers.java#L33-L34


was (Author: sujenshah):
It does not throw any exceptions, but when I check the number of plugins that are loaded its
0. 

> Publisher/Subscriber model for Nutch to emit events 
> ----------------------------------------------------
>
>                 Key: NUTCH-2132
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2132
>             Project: Nutch
>          Issue Type: New Feature
>          Components: fetcher, REST_api
>            Reporter: Sujen Shah
>            Assignee: Chris A. Mattmann
>              Labels: memex
>             Fix For: 1.13
>
>         Attachments: NUTCH-2132.patch, NUTCH-2132.v2.patch, PubSub_routingkey.patch
>
>
> It would be nice to have a Pub/Sub model in Nutch to emit certain events (ex- Fetcher
events like fetch-start, fetch-end, a fetch report which may contain data like outlinks of
the current fetched url, score, etc). 
> A consumer of this functionality could use this data to generate real time visualization
and generate statics of the crawl without having to wait for the fetch round to finish. 
> The REST API could contain an endpoint which would respond with a url to which a client
could subscribe to get the fetcher events. 



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