Class: Pige::Client::ChunkScheduler

Inherits:
Object
  • Object
show all
Defined in:
lib/pige/client/chunk_scheduler.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(day = Date.today) ⇒ ChunkScheduler

Returns a new instance of ChunkScheduler.



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# File 'lib/pige/client/chunk_scheduler.rb', line 52

def initialize(day = Date.today)
  self.day = day
  self.default_attributes = { :format => "wav" }
end

Instance Attribute Details

#day ⇒ Object

Returns the value of attribute day.



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# File 'lib/pige/client/chunk_scheduler.rb', line 4

def day
  @day
end

#default_attributes ⇒ Object

Returns the value of attribute default_attributes.



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# File 'lib/pige/client/chunk_scheduler.rb', line 4

def default_attributes
  @default_attributes
end

#dry_run ⇒ Object Also known as: dry_run?

Returns the value of attribute dry_run.



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# File 'lib/pige/client/chunk_scheduler.rb', line 4

def dry_run
  @dry_run
end

Class Method Details

.define(&block) ⇒ Object 



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# File 'lib/pige/client/chunk_scheduler.rb', line 57

def self.define(&block)
  new.tap do |scheduler|
    yield scheduler
  end
end

Instance Method Details

#chunk_attributes(attributes = {}) ⇒ Object 



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# File 'lib/pige/client/chunk_scheduler.rb', line 70

def chunk_attributes(attributes = {})
  attributes = default_attributes.merge(attributes)

  [:begin, :end].each do |endpoint|
    attributes[endpoint] = Time.parse(attributes[endpoint], day) if String === attributes[endpoint]
  end

  if duration = attributes.delete(:duration)
    if attributes[:begin]
      attributes[:end] = attributes[:begin] + duration
    else
      attributes[:begin] = attributes[:end] - duration
    end
  end

  if name = attributes[:begin_label]
    label = Pige::Client::Label.by_name(name, after: attributes[:begin])
    if label
      puts "Found label '#{name}' at #{label.timestamp}"
      attributes[:begin] = label.timestamp
    else
      puts "Can't find' label '#{name}'"
    end
  end

  if name = attributes[:end_label]
    label = Pige::Client::Label.by_name(name, before: attributes[:end])
    if label
      puts "Found label '#{name}' at #{label.timestamp}"
      attributes[:end] = label.timestamp
    else
      puts "Can't find' label '#{name}'"
    end
  end

  if margin = attributes.delete(:margin)
    attributes[:begin] -= margin
    attributes[:end] += margin
  end

  if attributes[:title] =~ /%[dmyHMY]/
    attributes[:title] = day.strftime(attributes[:title])
  end

  attributes
end

#chunks ⇒ Object 



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# File 'lib/pige/client/chunk_scheduler.rb', line 7

def chunks
  @chunks ||= []
end

#create(attributes = {}, options = {}) ⇒ Object 



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# File 'lib/pige/client/chunk_scheduler.rb', line 117

def create(attributes = {}, options = {})
  options = { :delay => 1 }.merge(options)

  attributes = chunk_attributes(attributes)
  puts "Create Chunk with #{attributes.inspect}"

  unless dry_run?
    chunk = Pige::Client::Chunk.create(attributes)
    if chunk
      chunks << chunk
    else
      puts "Error: can't create Chunk with #{attributes.inspect}"
    end
    sleep options[:delay].to_i if options[:delay]
  end
end

#download(target) ⇒ Object 



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# File 'lib/pige/client/chunk_scheduler.rb', line 37

def download(target)
  if chunks.empty?
    puts "No chunk to download"
    return []
  end

  wait

  FileUtils.mkdir_p target
  chunks.map do |chunk|
    puts "Download '#{chunk.title}' to #{target}/#{chunk.download_file} ..."
    chunk.download target
  end
end

#on(criteria, &block) ⇒ Object 



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# File 'lib/pige/client/chunk_scheduler.rb', line 63

def on(criteria, &block)
  if day.send("#{criteria}?")
    puts "Scheduling #{criteria}"
    instance_exec &block
  end
end

#wait(timeout = nil) ⇒ Object 



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# File 'lib/pige/client/chunk_scheduler.rb', line 11

def wait(timeout = nil)
  if chunks.empty?
    puts "No chunk to wait"
    return
  end

  timeout ||= chunks.size * 5
  print "Wait for new chunks to be ready : "
  deadline = Time.now + (timeout * 60)

  uncompleted_chunks = chunks.dup

  while Time.now < deadline
    uncompleted_chunks.delete_if do |chunk|
      chunk.completion_rate == 1
    end
    if uncompleted_chunks.empty?
      puts " done\nChunks are ready"
      break
    else
      print "."
      sleep 10
    end
  end
end