Ensuring documents indexed by autocommit

[Gargate, Siddharth]

Hi all,
    I am using CommonsHttpSolrServer to add documents to Solr. Instead
of explicitly calling commit for every document I have configured
autocommit in solrconfig.xml. But how do we ensure that the document
added is successfully indexed/committed on Solr side. Is there any
callback mechanism available where the callback method my application
will get called? I looked at the postCommit listener in solrconfig.xml
file but looks like it just supports execution of external executables.
 
Thanks in advance,
Siddharth