Task #2669: Allow generating obs ids from the command line

RTCP/Run/src/LOFAR/ObservationID.py

 #!/usr/bin/env python
 
 from util.Hosts import ropen
-from Locations import Locations
 
 # do not modify any files if DRYRUN is True
 DRYRUN = False
@@ -10,16 +9,13 @@ DRYRUN = False
   The following files exist to aid the creation of observation IDs:
 
   nextMSnumber	contains the next free observation ID (integer)
-  MSList	contains a list of existing measurements and their start time [deprecated: not updated anymore]
-
-  Their locations are stored in the Locations dictionary.
 """
 
 class ObservationID:
   def __init__( self ):
     self.obsid = 0
 
-  def generateID( self ):
+  def generateID( self, nextMSnumber = "/globalhome/lofarsystem/log/nextMSNumber" ):
     """ Returns an unique observation ID to use and reserve it. """
 
     if self.obsid:
@@ -27,16 +23,21 @@ class ObservationID:
       return self.obsid
 
     # read the next ms number
-    f  = ropen( Locations.files["nextmsnumber"], "r" )
+    f  = ropen( nextMSnumber, "r" )
     obsid = int(f.readline())
     f.close()
 
     if not DRYRUN:
       # increment it and save
-      f = ropen( Locations.files["nextmsnumber"], "w" )
+      f = ropen( nextMSnumber, "w" )
       print >>f, "%s" % (obsid+1)
       f.close()
 
     self.obsid = obsid
 
     return self.obsid
+
+if __name__ == "__main__":
+  obsID = ObservationID()
+  print obsID.generateID()
+