Class: Zold::Copies

Inherits:
Object
  • Object
show all
Defined in:
lib/zold/copies.rb

Overview

All copies

Constant Summary collapse

EXT =

Extension for copy files

'.zc'

Instance Method Summary collapse

Constructor Details

#initialize(dir, log: Log::Quiet.new) ⇒ Copies

Returns a new instance of Copies.



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# File 'lib/zold/copies.rb', line 41

def initialize(dir, log: Log::Quiet.new)
  raise 'Dir can\'t be nil' if dir.nil?
  @dir = dir
  raise 'Log can\'t be nil' if log.nil?
  @log = log
  @mutex = Mutex.new
end

Instance Method Details

#add(content, host, port, score, time = Time.now) ⇒ Object

Returns the name of the copy



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# File 'lib/zold/copies.rb', line 94

def add(content, host, port, score, time = Time.now)
  raise "Content can't be empty" if content.empty?
  raise 'TCP port must be of type Integer' unless port.is_a?(Integer)
  raise "TCP port can't be negative: #{port}" if port.negative?
  raise 'Time must be of type Time' unless time.is_a?(Time)
  raise "Time must be in the past: #{time}" if time > Time.now
  raise 'Score must be Integer' unless score.is_a?(Integer)
  raise "Score can't be negative: #{score}" if score.negative?
  @mutex.synchronize do
    FileUtils.mkdir_p(@dir)
    list = load
    target = list.find do |s|
      f = File.join(@dir, "#{s[:name]}#{Copies::EXT}")
      File.exist?(f) && AtomicFile.new(f).read == content
    end
    if target.nil?
      max = Dir.new(@dir)
        .select { |f| File.basename(f, Copies::EXT) =~ /^[0-9]+$/ }
        .map(&:to_i)
        .max
      max = 0 if max.nil?
      name = (max + 1).to_s
      AtomicFile.new(File.join(@dir, "#{name}#{Copies::EXT}")).write(content)
    else
      name = target[:name]
    end
    list.reject! { |s| s[:host] == host && s[:port] == port }
    list << {
      name: name,
      host: host,
      port: port,
      score: score,
      time: time
    }
    save(list)
    name
  end
end

#all ⇒ Object 



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# File 'lib/zold/copies.rb', line 133

def all
  @mutex.synchronize do
    load.group_by { |s| s[:name] }.map do |name, scores|
      {
        name: name,
        path: File.join(@dir, "#{name}#{Copies::EXT}"),
        score: scores.select { |s| s[:time] > Time.now - 24 * 60 * 60 }
          .map { |s| s[:score] }
          .inject(&:+) || 0
      }
    end.select { |c| File.exist?(c[:path]) }.sort_by { |c| c[:score] }.reverse
  end
end

#clean ⇒ Object 



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# File 'lib/zold/copies.rb', line 57

def clean
  @mutex.synchronize do
    list = load
    list.reject! { |s| s[:time] < Time.now - 24 * 60 * 60 }
    save(list)
    deleted = 0
    files.each do |f|
      next unless list.find { |s| s[:name] == File.basename(f, Copies::EXT) }.nil?
      file = File.join(@dir, f)
      size = File.size(file)
      File.delete(file)
      @log.debug("Copy at #{f} deleted: #{Size.new(size)}")
      deleted += 1
    end
    files.each do |f|
      file = File.join(@dir, f)
      wallet = Wallet.new(file)
      begin
        wallet.refurbish
        raise "Invalid protocol #{wallet.protocol} in #{file}" unless wallet.protocol == Zold::PROTOCOL
      rescue StandardError => e
        File.delete(file)
        @log.debug("Copy at #{f} deleted: #{Backtrace.new(e)}")
        deleted += 1
      end
    end
    deleted
  end
end

#load ⇒ Object 



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# File 'lib/zold/copies.rb', line 147

def load
  FileUtils.mkdir_p(File.dirname(file))
  FileUtils.touch(file)
  CSV.read(file).map do |s|
    {
      name: s[0],
      host: s[1],
      port: s[2].to_i,
      score: s[3].to_i,
      time: Time.parse(s[4])
    }
  end
end

#remove(host, port) ⇒ Object 



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# File 'lib/zold/copies.rb', line 87

def remove(host, port)
  @mutex.synchronize do
    save(load.reject { |s| s[:host] == host && s[:port] == port })
  end
end

#root ⇒ Object 



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# File 'lib/zold/copies.rb', line 49

def root
  File.join(@dir, '..')
end

#to_s ⇒ Object 



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# File 'lib/zold/copies.rb', line 53

def to_s
  File.basename(@dir)
end