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xqute.schedulers.gbatch_scheduler

module

xqute.schedulers.gbatch_scheduler

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Classes
class

xqute.schedulers.gbatch_scheduler.GbatchScheduler(*args, project, location, **kwargs)

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Bases
xqute.scheduler.Scheduler

Scheduler for Google Cloud Batch

You can pass extra configuration parameters to the constructor that will be used in the job configuration file. For example, you can pass taskGroups to specify the task groups and their specifications.

For using containers, it is a little bit tricky to specify the commands. When no entrypoint is specified, the commands should be a list with the first element being the interpreter (e.g. /bin/bash) and the second element being the path to the wrapped job script. If the entrypoint is specified, we can use the {lang} and {script} placeholders in the commands list, where {lang} will be replaced with the interpreter (e.g. /bin/bash) and {script} will be replaced with the path to the wrapped job script. With entrypoint specified and no {script} placeholder, the joined command will be the interpreter followed by the path to the wrapped job script will be appended to the commands list.

Parameters
  • **kwargs — Other arguments for the scheduler
Attributes
  • jobcmd_wrapper_init — The init script for the job command wrapper
  • name — The name of the scheduler
Methods
method

create_job(index, cmd)

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Create a job

Parameters
  • index (int) — The index of the job
  • cmd (Union) — The command of the job
Returns (Job)

The job

method

submit_job_and_update_status(job)

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Submit and update the status

  1. Check if the job is already submitted or running
  2. If not, run the hook
  3. If the hook is not cancelled, clean the job
  4. Submit the job, raising an exception if it fails
  5. If the job is submitted successfully, update the status
  6. If the job fails to submit, update the status and write stderr to the job file
Parameters
  • job (Job) — The job
method

retry_job(job)

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Retry a job

Parameters
  • job (Job) — The job
method

kill_job_and_update_status(job)

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Kill a job and update its status

Parameters
  • job (Job) — The job
method

polling_jobs(jobs, on)

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Check if all jobs are done or new jobs can submit

Parameters
  • jobs (List) — The list of jobs
  • on (str) — query on status: submittable or all_done
Returns (bool)

True if yes otherwise False.

method

kill_running_jobs(jobs)

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Try to kill all running jobs

Parameters
  • jobs (List) — The list of jobs
method

job_is_submitted_or_running(job)

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Check if a job is already submitted or running

Parameters
  • job (Job) — The job
Returns (bool)

True if yes otherwise False.

method

jobcmd_shebang(job) → str

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The shebang of the wrapper script

method

jobcmd_init(job) → str

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The job command init

method

jobcmd_prep(job) → str

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The job command preparation

method

jobcmd_end(job) → str

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The job command end

method

wrap_job_script(job)

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Wrap the job script

Parameters
  • job (Job) — The job
Returns (str)

The wrapped script

method

wrapped_job_script(job)

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Get the wrapped job script

Parameters
  • job (Job) — The job
Returns (SpecPath)

The path of the wrapped job script

method

submit_job(job)

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Submit a job

Parameters
  • job (Job) — The job
Returns (str)

The unique id in the scheduler system

method

kill_job(job)

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Kill a job

Parameters
  • job (Job) — The job
method

job_is_running(job)

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Check if a job is really running

Parameters
  • job (Job) — The job
Returns (bool)

True if yes otherwise False.