showcase_helper: add example on how to copy between BW and Nearline

showcase_helper.py

@@ -13,15 +13,24 @@ for file in files:
     print("%s (%s) [%d bytes]" % \
          (file, files[file]['type'], files[file]['size']))
 
-# create a file an duplicate it using globus
+# create a file and copy it using globus
 foxfile = "%s/%s-foxfile" % (os.getcwd(), os.environ["USER"])
-houndfile = "%s/%s-houndfile" % (os.getcwd(), os.environ["USER"])
 with open(foxfile, "w") as fh:
     fh.write("The quick brown fox jumps over the lazy dog\n")
 
-print("Copying %s to %s" % (foxfile, houndfile))
+# copy to Nearline
+nearline_foxfile = "~/foxfile"
+print("Copying %s to Nearline %s" % (foxfile, nearline_foxfile))
+transfer = helper.transfer(globushl.EP_BLUEWATERS, globushl.EP_NEARLINE,
+                           [(foxfile, nearline_foxfile)], synchronous=True)
+print("done")
+
+# duplicate on BW
+houndfile = "%s/%s-houndfile" % (os.getcwd(), os.environ["USER"])
+harefile = "%s/%s-harefile" % (os.getcwd(), os.environ["USER"])
+print("Copying %s to BlueWaters %s and %s" % (foxfile, houndfile, harefile))
 transfer = helper.transfer(globushl.EP_BLUEWATERS, globushl.EP_BLUEWATERS, 
-                           [(foxfile, houndfile)])
+                           [(foxfile, houndfile), (foxfile, harefile)])
 helper.task_wait(transfer)
 with open(houndfile, "r") as fh:
     print("Hounds contains:", fh.readlines())
@@ -29,6 +38,7 @@ print("done")
 
 # get rid of files
 print("Removing files")
-helper.delete(globushl.EP_BLUEWATERS, [foxfile, houndfile])
+helper.delete(globushl.EP_NEARLINE, nearline_foxfile)
+helper.delete(globushl.EP_BLUEWATERS, [foxfile, houndfile, harefile])
 
 print("All done")