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          CMS MessageLogger: Requesting the  MessageLogger Service
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<h1>CMS MessageLogger Service
<br> 
Requesting the MessageLogger Service</h1>
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<pre>
process TEST = {

  <font color=red>service = MessageLogger</font> {
    vstring destinations = {   "detailedInfo.txt"
                             , "critical.txt"
                             , "cout"
                             , "cerr"
                                             }
    PSet critical.txt     = { string threshold = "ERROR"   }
    PSet detailedInfo.txt = { string threshold = "INFO"    } 
    PSet cerr             = { string threshold = "WARNING" }
  }
  untracked PSet maxEvents = {untracked int32 input = 5}
  path p = { myAnalysisModule }
  module myAnalysisModule = ModuleThatIssuesMessages { }
  source = EmptySource { }
}
</pre>


The <font color=red>service = MessageLogger { ... } </font> parameter
tells the framework that you wish to have available the MessageLogger
service.  Parameters configuring that service appear between the
braces.
<p>
Although messages can be issued without having asked for the service,
it is strongly recommended that jobs which may send messages include
this in their .cfg file.

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<img src="bar.gif"></center>

<p><center>
<a href="http://www.uscms.org/SoftwareComputing/index.html">
USCMS Software and Computing Home Page </a> - 
<a href="MessageLogger.html"> CMS MessageLogger Service Page </a> -
<a href="parameters.html#example"> Configuration File </a>
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<p>
      <hr>
      <address><a href="mailto:mf@fnal.gov">Mark Fischler</a></address>
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Last modified: November 29, 2005
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