Wrap main routine in if __name__ == '__main__'

BackupPC_archiveHost_s3

@@ -236,12 +236,13 @@ def send_file(bucket, filename, cmd, mesg):
 
     return k
 
-# Read in arguments
-if len(sys.argv) != 12:
+if __name__ == '__main__':
+    # Read in arguments
+    if len(sys.argv) != 12:
         sys.stderr.write("Usage: %s tarCreatePath splitPath parPath host bkupNum \
               compPath fileExt splitSize outLoc parFile share\n" % sys.argv[0])
         sys.exit(1)
-else:
+    else:
         tarCreate   = sys.argv[1]
         splitPath   = sys.argv[2]
         parPath     = sys.argv[3]
@@ -254,43 +255,43 @@ else:
         parfile     = sys.argv[10]
         share       = sys.argv[11]
 
-for i in [tarCreate, compPath, splitPath, parPath]:
+    for i in [tarCreate, compPath, splitPath, parPath]:
         if i is not '' and not is_exe(i):
             sys.stderr.write('Error: %s is not an executable program\n' % i)
             sys.exit(1)
 
-# open s3 connection
-bucket = open_s3(secrets.accesskey, secrets.sharedkey, host)
+    # open s3 connection
+    bucket = open_s3(secrets.accesskey, secrets.sharedkey, host)
 
-beginning = time.time()
+    beginning = time.time()
 
-mesg = "Writing archive for host %s, backup #%i" % (host, bkupNum)
-if splitSize > 0 and is_exe(splitPath):
+    mesg = "Writing archive for host %s, backup #%i" % (host, bkupNum)
+    if splitSize > 0 and is_exe(splitPath):
         mesg += ', split into %i byte chunks' % splitSize
-if secrets.gpgsymmetrickey:
+    if secrets.gpgsymmetrickey:
         mesg += ', encrypted with secret key'
 
-logging.info(mesg)
-sys.stdout.write(time.strftime('%d-%H:%M:%S') + ": " + mesg + '\n')
-sys.stdout.flush()
+    logging.info(mesg)
+    sys.stdout.write(time.strftime('%d-%H:%M:%S') + ": " + mesg + '\n')
+    sys.stdout.flush()
 
-# Prepare the pipeline
-if share == '*':
+    # Prepare the pipeline
+    if share == '*':
         share = '\*'
 
-cmd = '%s -t -h %s -n %i -s %s . ' % (tarCreate, host, bkupNum, share)
+    cmd = '%s -t -h %s -n %i -s %s . ' % (tarCreate, host, bkupNum, share)
 
-if splitSize > 0 and is_exe(splitPath):
+    if splitSize > 0 and is_exe(splitPath):
         filehead = '%s/%s.%i.tar.' % (outLoc, host, bkupNum)
         fileglob = filehead + '*'
         cmd += '| %s -b %i - %s' % (splitPath, splitSize, filehead)
-else:
+    else:
         fileglob = '%s/%s.%i.tar' % (outLoc, host, bkupNum)
         cmd += '> %s' % fileglob
         filehead = fileglob + '.'
 
-# is there already evidence of this having been done before?
-if glob.glob('%s/%s.*.tar.*' % (outLoc, host)):
+    # is there already evidence of this having been done before?
+    if glob.glob('%s/%s.*.tar.*' % (outLoc, host)):
         logging.info('Evidence of failed execution run prior!  Finishing it.')
         somefile = os.path.basename(glob.glob('%s/%s.*.tar.*' % (outLoc, host))[0])
         keyparts = somefile.split('.')
@@ -316,7 +317,7 @@ if glob.glob('%s/%s.*.tar.*' % (outLoc, host)):
         logging.info(mesg)
         sys.stdout.write(time.strftime('%d-%H:%M:%S') + ": " + mesg + '\n')
         sys.stdout.flush()
-else:
+    else:
         logging.debug('Executing %s' % cmd)
 
         returncode = os.system(cmd)
@@ -325,9 +326,9 @@ else:
             logger.error('%s died with exit code %i' % (cmd, returncode))
             sys.exit(1)
 
-logging.info('Beginning post-processing of %i files from %s #%i' % (len(glob.glob(fileglob)), host, bkupNum))
+    logging.info('Beginning post-processing of %i files from %s #%i' % (len(glob.glob(fileglob)), host, bkupNum))
 
-for i in sorted(glob.glob(fileglob)):
+    for i in sorted(glob.glob(fileglob)):
         sending_start = time.time()
         if secrets.gpgsymmetrickey and not i.endswith('.gpg'):
             sendfile = encrypt_file(i, secrets.gpgsymmetrickey, compPath)
@@ -369,10 +370,8 @@ for i in sorted(glob.glob(fileglob)):
         sys.stdout.write('%s: File sent.  Total time %i seconds, crypto time %i seconds, transfer speed %i bytes/second.\n' % (time.strftime('%d-%H:%M:%S'), sending_seconds, encrypt_seconds, bytespersecond))
         sys.stdout.flush()
 
-# finalize the backup
-key = MyKey(bucket)
-key.key = '%sCOMPLETE' % os.path.basename(filehead)
-key.set_contents_from_string('%s %s "%s"' % (beginning, time.time(), mesg))
-key.close()
-
-
+    # finalize the backup
+    key = MyKey(bucket)
+    key.key = '%sCOMPLETE' % os.path.basename(filehead)
+    key.set_contents_from_string('%s %s "%s"' % (beginning, time.time(), mesg))
+    key.close()