Added debug log message when reading a pfsConfig file.

python/pfs/datamodel/pfsConfig.py

@@ -1,6 +1,7 @@
 import numpy as np
 import os
 import enum
+import lsst.log
 
 try:
     import astropy.io.fits as pyfits
@@ -10,6 +11,8 @@
 
 __all__ = ("TargetType", "FiberStatus", "PfsDesign", "PfsConfig")
 
+logger = lsst.log.Log.getLogger("pfs.datamodel.pfsConfig")
+
 
 class DocEnum(enum.IntEnum):
     """An integer enumerated type with documented members
@@ -617,6 +620,7 @@ def read(cls, pfsDesignId, visit0, dirName="."):
             Constructed `PfsConfig`.
         """
         filename = os.path.join(dirName, cls.fileNameFormat % (pfsDesignId, visit0))
+        logger.debugf('Reading file {}', filename)
         return cls._readImpl(filename, pfsDesignId=pfsDesignId, visit0=visit0)
 
     def extractCenters(self, fiberId):