Class: HaveAPI::Fs::Cleaner

Inherits:
Worker
  • Object
show all
Defined in:
lib/haveapi/fs/cleaner.rb

Overview

Cleaner is in a regular interval deleting old components from the tree.

A component is declared old when either it's ctime is older than CTIME seconds or it's atime is older than ATIME seconds. Bound components are not touched.

Constant Summary collapse

ATIME =

Delete components not accessed in the last 10 minutes

10*60
CTIME =

Delete components created more than 30 minutes ago

30*60

Instance Attribute Summary

Attributes inherited from Worker

#runs

Instance Method Summary collapse

Methods inherited from Worker

#last_time, #next_time, #start, #stop

Constructor Details

#initialize(fs, root) ⇒ Cleaner

Returns a new instance of Cleaner.



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# File 'lib/haveapi/fs/cleaner.rb', line 16

def initialize(fs, root)
  super(fs)
  @root = root
  @sweep_id = true
end

Instance Method Details

#start_delay ⇒ Object 



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# File 'lib/haveapi/fs/cleaner.rb', line 22

def start_delay
  ATIME + 30
end

#sweep(component) ⇒ Object 



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# File 'lib/haveapi/fs/cleaner.rb', line 39

def sweep(component)
  component.send(:children).delete_if do |_, c|
    sweep(c) unless c.file?

    if !c.bound? && (c.ctime < @ctime || c.atime < @atime)
      if c.unsaved?(@sweep_id ? 1 : 0)
        puts "cannot free unsaved '#{c.path}'"
        next(false)

      else
        c.invalidate
        next(true)
      end
    end
  end
end

#work ⇒ Object 



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# File 'lib/haveapi/fs/cleaner.rb', line 30

def work
  t = Time.now
  @atime = t - ATIME
  @ctime = t - CTIME

  sweep(@root)
  @sweep_id = !@sweep_id
end

#work_period ⇒ Object 



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# File 'lib/haveapi/fs/cleaner.rb', line 26

def work_period
  ATIME / 2
end