45 lines
978 B
Ruby
45 lines
978 B
Ruby
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class Cron::ReleaseCrashedExportJob < Cron::CronJob
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self.schedule_expression = "every 10 minute"
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SECSCAN_LIMIT = 20_000
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def perform(*args)
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return if !performable?
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export_jobs = jobs_for_current_host
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return if export_jobs.empty?
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host_pids = Sys::ProcTable.ps.map(&:pid)
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export_jobs.each do |job|
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_, pid = hostname_and_pid(job.locked_by)
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reset(job:) if host_pids.exclude?(pid.to_i)
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end
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end
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def reset(job:)
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job.locked_by = nil
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job.locked_at = nil
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job.attempts += 1
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job.save!
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end
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def hostname_and_pid(worker_name)
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matches = /host:(?<host>.*) pid:(?<pid>\d+)/.match(worker_name)
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[matches[:host], matches[:pid]]
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end
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def jobs_for_current_host
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Delayed::Job.where("locked_by like ?", "%#{whoami}%")
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.where(queue: ExportJob.queue_name)
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end
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def whoami
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me, _ = hostname_and_pid(Delayed::Worker.new.name)
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me
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end
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def performable?
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Delayed::Job.count < SECSCAN_LIMIT
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end
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end
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