Class: Rearview::MonitorService

Inherits:
Object
  • Object
show all
Includes:
Celluloid, Logger
Defined in:
lib/rearview/monitor_service.rb

Defined Under Namespace

Classes: MonitorServiceError

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Logger

#logger

Constructor Details

#initialize(jobs = []) ⇒ MonitorService

Returns a new instance of MonitorService.



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# File 'lib/rearview/monitor_service.rb', line 9

def initialize(jobs=[])
  self.jobs = jobs
  @supervisor = nil
  @started = false
end

Instance Attribute Details

#jobs ⇒ Object

Returns the value of attribute jobs.



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# File 'lib/rearview/monitor_service.rb', line 7

def jobs
  @jobs
end

#supervisor ⇒ Object (readonly)

Returns the value of attribute supervisor.



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# File 'lib/rearview/monitor_service.rb', line 8

def supervisor
  @supervisor
end

Instance Method Details

#add(job) ⇒ Object

Raises:



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# File 'lib/rearview/monitor_service.rb', line 50

def add(job)
  raise MonitorServiceError.new("service not started") unless started?
  if @jobs[job.id]
    logger.warn "#{self}#add job:#{job.id} already added"
  else
    @supervisor.add_tasks([job])
    @jobs[job.id] = job
  end
end

#remove(job) ⇒ Object

Raises:



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# File 'lib/rearview/monitor_service.rb', line 59

def remove(job)
  raise MonitorServiceError.new("service not started") unless started?
  if !@jobs[job.id]
    logger.warn "#{self}#remove job:#{job.id} has already been removed"
  else
    @supervisor.remove_tasks([job])
    @jobs.delete(job.id)
  end
end

#schedule(job) ⇒ Object

Raises:



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# File 'lib/rearview/monitor_service.rb', line 35

def schedule(job)
  logger.debug "#{self} schedule job: #{job.id}"
  raise MonitorServiceError.new("service not started") unless started?
  if @jobs[job.id]
    remove(job)
  end
  add(job)
end

#shutdown ⇒ Object

Raises:



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# File 'lib/rearview/monitor_service.rb', line 28

def shutdown
  logger.info "#{self} shutting down service..."
  raise MonitorServiceError.new("service not started") unless started?
  @supervisor.remove_all_tasks
  @supervisor.terminate
  @started = false
end

#started? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rearview/monitor_service.rb', line 17

def started?
  @started
end

#startup ⇒ Object

Raises:



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# File 'lib/rearview/monitor_service.rb', line 20

def startup
  logger.info "#{self} starting up service..."
  raise MonitorServiceError.new("service already started") if started?
  # TODO actor could die, need to reference by name in registry and/or create link
  @supervisor = Rearview::MonitorSupervisor.run!
  @supervisor.add_tasks(@jobs.values)
  @started = true
end

#unschedule(job) ⇒ Object

Raises:



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# File 'lib/rearview/monitor_service.rb', line 43

def unschedule(job)
  logger.debug "#{self} unschedule job: #{job.id}"
  raise MonitorServiceError.new("service not started") unless started?
  if @jobs[job.id]
    remove(job)
  end
end