Class: Delayed::Worker::HealthCheck
- Inherits:
-
Object
- Object
- Delayed::Worker::HealthCheck
show all
- Defined in:
- lib/delayed/worker/health_check.rb
Class Attribute Summary collapse
Instance Attribute Summary collapse
Class Method Summary
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Instance Method Summary
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Constructor Details
#initialize(worker_name:, config: {}) ⇒ HealthCheck
Returns a new instance of HealthCheck.
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# File 'lib/delayed/worker/health_check.rb', line 69
def initialize(worker_name:, config: {})
@config = config.with_indifferent_access
@worker_name = worker_name
end
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Class Attribute Details
.subclasses ⇒ Object
Returns the value of attribute subclasses.
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# File 'lib/delayed/worker/health_check.rb', line 10
def subclasses
@subclasses
end
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.type_name ⇒ Object
Returns the value of attribute type_name.
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# File 'lib/delayed/worker/health_check.rb', line 9
def type_name
@type_name
end
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Instance Attribute Details
#config ⇒ Object
Returns the value of attribute config.
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# File 'lib/delayed/worker/health_check.rb', line 67
def config
@config
end
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#worker_name ⇒ Object
Returns the value of attribute worker_name.
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# File 'lib/delayed/worker/health_check.rb', line 67
def worker_name
@worker_name
end
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Class Method Details
.attempt_advisory_lock ⇒ Object
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# File 'lib/delayed/worker/health_check.rb', line 60
def attempt_advisory_lock
lock_name = "Delayed::Worker::HealthCheck#reschedule_abandoned_jobs"
output = ActiveRecord::Base.connection.execute("SELECT pg_try_advisory_xact_lock(half_md5_as_bigint('#{lock_name}'));")
output.getvalue(0, 0)
end
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.build(type:, worker_name:, config: {}) ⇒ Object
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# File 'lib/delayed/worker/health_check.rb', line 16
def build(type:, worker_name:, config: {})
type = type.to_sym
klass = @subclasses.find { |sc| sc.type_name == type }
raise ArgumentError, "Unable to build a HealthCheck for type #{type}" unless klass
klass.new(worker_name: worker_name, config: config)
end
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.inherited(subclass) ⇒ Object
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# File 'lib/delayed/worker/health_check.rb', line 12
def inherited(subclass)
@subclasses << subclass
end
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.reschedule_abandoned_jobs ⇒ Object
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# File 'lib/delayed/worker/health_check.rb', line 23
def reschedule_abandoned_jobs
return if Settings.worker_health_check_type == :none
Delayed::Job.transaction do
result = attempt_advisory_lock
return unless result
checker = Worker::HealthCheck.build(
type: Settings.worker_health_check_type,
config: Settings.worker_health_check_config,
worker_name: 'cleanup-crew'
)
live_workers = checker.live_workers
Delayed::Job.running_jobs.each do |job|
next if job.locked_by.start_with?("prefetch:")
unless live_workers.include?(job.locked_by)
begin
Delayed::Job.transaction do
next unless Delayed::Job.where(id: job, locked_by: job.locked_by).update_all(locked_by: "abandoned job cleanup") == 1
job.reschedule
end
rescue
::Rails.logger.error "Failure rescheduling abandoned job #{job.id} #{$!.inspect}"
end
end
end
end
end
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Instance Method Details
#live_workers ⇒ Object
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# File 'lib/delayed/worker/health_check.rb', line 82
def live_workers
raise NotImplementedError
end
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#start ⇒ Object
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# File 'lib/delayed/worker/health_check.rb', line 74
def start
raise NotImplementedError
end
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#stop ⇒ Object
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# File 'lib/delayed/worker/health_check.rb', line 78
def stop
raise NotImplementedError
end
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