condor_urlfetch - HTCondor Manual

       HTCondor Team

       1990-2024,  Center  for High Throughput Computing, Computer Sciences Department, University of Wisconsin-
       Madison, Madison, WI, US. Licensed under the Apache License, Version 2.0.

                                                  Jan 04, 2025                                CONDOR_URLFETCH(1)

       Depending on the command line arguments, condor_urlfetch sends the result of a query from the url to both
       standard  output  and  to  a file specified by local-url-cache-file, or it sends the contents of the file
       specified by local-url-cache-file to standard output.

       condor_urlfetch is intended to be used as the program to run when defining configuration, such as in  the
       nonfunctional example:

          LOCAL_CONFIG_FILE = $(LIBEXEC)/condor_urlfetch -$(SUBSYSTEM) \
            http://www.example.com/htcondor-baseconfig  local.config |

       The  pipe character (|) at the end of this definition of the location of a configuration file changes the
       use of the definition. It causes the command listed on the right hand side of this  assignment  statement
       to  be  invoked,  and  standard  output  becomes the configuration. The value of $(SUBSYSTEM) becomes the
       daemon that caused this configuration to be read. If $(SUBSYSTEM) evaluates to MASTER, then the URL query
       always occurs, and the result is sent to standard output as well as written  to  the  file  specified  by
       argument  local-url-cache-file.  When  $(SUBSYSTEM) evaluates to a daemon other than MASTER, then the URL
       query only occurs if the file specified by local-url-cache-file does not exist. If the file specified  by
       local-url-cache-file does exist, then the contents of this file is sent to standard output.

       Note  that  if  the  configuration  kept  at  the URL site changes, and reconfiguration is requested, the
       -<daemon> argument needs to be -MASTER. This is the only way to guarantee that there will be a  query  of
       the changed URL contents, such that they will make their way into the configuration.

condor_urlfetch will exit with a status value of 0 (zero) upon success and non zero otherwise.

       condor_urlfetch - HTCondor Manual

       fetch configuration given a URL

-<daemon>
                 The upper case name of the daemon issuing the request for the configuration output. If -MASTER,
                 then the URL query always occurs. If a daemon other than -MASTER, for example STARTD or SCHEDD,
                 then the URL query only occurs if the file defined by local-url-cache-file does not exist.

condor_urlfetch [-<daemon> ] urllocal-url-cache-file