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          CMS MessageLogger: Guide To Issuing Messages
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<h1>CMS MessageLogger Service
<br> 
Guide To Issuing Messages</h1>
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<p>
The CMS MessageLogger Service is meant to allow code in modules, other 
services, and other framework "scaffolding" to log 
messages to a unified message logging 
and statistics facility.  
<p>
The  MessageLogger Service captures and coordinates messages originating in
multiple modules (which, under the CMS framework, will in general be running 
in multiple threads) into a specified set of destinations.  
The management of these destinations is  
based on the ZOOM Error Logger package developed at Fermilab.  
<p>
All users of the MessageLogger service should read the section on 
<a href="MessageLogger.html#howSend"> Issuing Messages </a>.
<p>
The behavior of the MessageLogger can be adjusted via lines in the 
job's configuration file (.cfg).  
Users wishing to customize the behavior of the MessageLogger should read 
the section on 
<a href="parameters.html"> MessageLogger Parameters </a>.
 
<p>
<ul>
<li> <a href="MessageLogger.html#howSend"> Issuing Messages </a>
<li><a href="parameters.html"> MessageLogger Parameters </a> - Configuring 
Destinations and their filtering behaviors  
<li><a href="requirements.html"> 
	Open Issues Concerning Features Wanted by CMS </a>
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	Modifying Behavior via the MessageLogger Service  </a> -->
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      <hr>
      <address><a href="mailto:mf@fnal.gov">Mark Fischler</a></address>
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Last modified: December 5, 2005
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