Signals support: Tell DJ finish processing, then stop taking new jobs

Pablo Cantero

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Sep 11, 2018, 5:15:47 PM9/11/18

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Hey,

Does delayed_jobs take signals? I would love to tell DJ to finish processing the current jobs, but stop taking new ones, so I can deploy a new version of the code without abruptly `SIGTERM` stopping the current jobs being processed.

David Genord II

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Sep 11, 2018, 6:40:56 PM9/11/18

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The standard signals do that already.

David

On Tue, Sep 11, 2018 at 4:48 PM, Pablo Cantero <pabl...@gmail.com> wrote:

Hey,

Does delayed_jobs take signals? I would love to tell DJ to finish processing the current jobs, but stop taking new ones, so I can deploy a new version of the code without abruptly `SIGTERM` stopping the current jobs being processed.

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Pablo Cantero

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Sep 11, 2018, 10:17:24 PM9/11/18

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Hi David,

hm good point: https://github.com/collectiveidea/delayed_job/blob/73bd1b50e719b336b70fcbb8dc4a37ec9b2f6f35/lib/delayed/worker.rb#L159

raise_signal_exceptions is set to :term (most likely the default value). So the idea is to set it to false from preventing the Signal Exception?

My workers are currently deployed to Heroku and I don't want to abruptly terminate them, so my idea is to stop processing then deploy.

On Tue, Sep 11, 2018 at 6:40 PM David Genord II <albu...@gmail.com> wrote:

The standard signals do that already.

David

On Tue, Sep 11, 2018 at 4:48 PM, Pablo Cantero <pabl...@gmail.com> wrote:

Hey,

Does delayed_jobs take signals? I would love to tell DJ to finish processing the current jobs, but stop taking new ones, so I can deploy a new version of the code without abruptly `SIGTERM` stopping the current jobs being processed.

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Pablo Cantero
pablocantero.com

David Genord II

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Sep 12, 2018, 8:30:13 AM9/12/18

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Yes, but be aware, Heroku is not very patient. Your process has 30 seconds to gracefully shutdown before it hard kills it.

David

On Tue, Sep 11, 2018 at 10:17 PM, Pablo Cantero <pabl...@gmail.com> wrote:

Hi David,

hm good point: https://github.com/collectiveidea/delayed_job/blob/73bd1b50e719b336b70fcbb8dc4a37ec9b2f6f35/lib/delayed/worker.rb#L159

raise_signal_exceptions is set to :term (most likely the default value). So the idea is to set it to false from preventing the Signal Exception?

My workers are currently deployed to Heroku and I don't want to abruptly terminate them, so my idea is to stop processing then deploy.

On Tue, Sep 11, 2018 at 6:40 PM David Genord II <albu...@gmail.com> wrote:

The standard signals do that already.

David

On Tue, Sep 11, 2018 at 4:48 PM, Pablo Cantero <pabl...@gmail.com> wrote:

Hey,

Does delayed_jobs take signals? I would love to tell DJ to finish processing the current jobs, but stop taking new ones, so I can deploy a new version of the code without abruptly `SIGTERM` stopping the current jobs being processed.

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Pablo Cantero
pablocantero.com

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Pablo Cantero

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Oct 9, 2018, 3:53:44 PM10/9/18

to delay...@googlegroups.com

Thanks David.

On Wed, Sep 12, 2018 at 8:30 AM David Genord II <albu...@gmail.com> wrote:

Yes, but be aware, Heroku is not very patient. Your process has 30 seconds to gracefully shutdown before it hard kills it.

David

On Tue, Sep 11, 2018 at 10:17 PM, Pablo Cantero <pabl...@gmail.com> wrote:

Hi David,

hm good point: https://github.com/collectiveidea/delayed_job/blob/73bd1b50e719b336b70fcbb8dc4a37ec9b2f6f35/lib/delayed/worker.rb#L159

raise_signal_exceptions is set to :term (most likely the default value). So the idea is to set it to false from preventing the Signal Exception?

My workers are currently deployed to Heroku and I don't want to abruptly terminate them, so my idea is to stop processing then deploy.

On Tue, Sep 11, 2018 at 6:40 PM David Genord II <albu...@gmail.com> wrote:

The standard signals do that already.

David

On Tue, Sep 11, 2018 at 4:48 PM, Pablo Cantero <pabl...@gmail.com> wrote:

Hey,

Does delayed_jobs take signals? I would love to tell DJ to finish processing the current jobs, but stop taking new ones, so I can deploy a new version of the code without abruptly `SIGTERM` stopping the current jobs being processed.

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Pablo Cantero
pablocantero.com

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Pablo Cantero
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