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htchirp

Pure Python Chirp client for HTCondor

  • 3.0
  • Source
  • PyPI
  • Socket score

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HTChirp

Pure Python Chirp client for HTCondor

Installation

The latest release is available on PyPI:

pip install htchirp

However, if HTCondor job sandbox space is a premium, most of HTChirp's functionality can be accessed from htchirp.py as a standalone script or module.

Example Usage

There are multiple ways to invoke HTChirp inside a HTCondor job environment.

Using HTChirp inside Python

First, you can use an HTChirp object as part of a larger Python workflow connect to the Chirp server and issue commands:

Using context management (recommended):

>>> import htchirp
>>> with htchirp.HTChirp() as chirp:
>>>     chirp.ulog('Logging use of Chirp in Python')
>>>     me = chirp.whoami()
>>>     chirp.set_job_attr('UsingPythonChirp', 'True')
>>>     using_chirp = chirp.get_job_attr('UsingPythonChirp')
>>> me
'CONDOR'
>>> using_chirp
'true'

Using manual connection and disconnection (not recommended):

>>> import htchirp
>>> chirp = htchirp.HTChirp()
>>> chirp.connect()
>>> chirp.write('Important output 1\n', '/tmp/my-job-output', 'cwa')
19
>>> chirp.write('Important output 2\n', '/tmp/my-job-output', 'cwa')
19
>>> chirp.read('/tmp/my-job-output', 1024)
'Important output 1\nImportant output 2\n'
>>> chirp.fetch('/tmp/my-job-output', './my-job-output')
38
>>> chirp.disconnect()

For more information on the available commands, see help(htchirp.HTChirp).

Using HTChirp on the command line

Second, you can use HTChirp on the command line with the same commands and arguments supported by the condor_chirp utility, either by including htchirp.py with your job or by installing the HTChirp package inside a virtual environment inside your job.

Using htchirp.py from within the working directory:

$ python htchirp.py ulog "Logging use of Chirp in Python"
$ python htchirp.py whoami
CONDOR
$ python htchirp.py set_job_attr UsingPythonChirp True
$ python htchirp.py get_job_attr UsingPythonChirp
True

Using condor_htchirp after installing HTChirp in an active virtual environment:

$ condor_htchirp ulog "Logging use of Chirp in Python"
$ condor_htchirp whoami
CONDOR
$ condor_htchirp set_job_attr UsingPythonChirp True
$ condor_htchirp get_job_attr UsingPythonChirp
True

Using python -m htchirp after installing HTChirp in an active virtual environment:

$ python -m htchirp ulog "Logging use of Chirp in Python"
$ python -m htchirp whoami
CONDOR
$ python -m htchirp set_job_attr UsingPythonChirp True
$ python -m htchirp get_job_attr UsingPythonChirp
True

For a list of commands and arguments, pass --help to your preferred command line invokation, or see the condor_chirp man page.

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