Class: Zold::Remotes

Inherits:
Dry::Struct
  • Object
show all
Defined in:
lib/zold/remotes.rb

Overview

All remotes

Defined Under Namespace

Classes: Empty, Remote

Constant Summary collapse

PORT =

The default TCP port all nodes are supposed to use.

4096
TOLERANCE =

At what amount of errors we delete the remote automatically

8
MAX_NODES =

Default number of nodes to fetch.

16

Instance Method Summary collapse

Instance Method Details

#add(host, port = Remotes::PORT) ⇒ Object 



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# File 'lib/zold/remotes.rb', line 151

def add(host, port = Remotes::PORT)
  raise 'Host can\'t be nil' if host.nil?
  raise 'Host can\'t be empty' if host.empty?
  raise 'Port can\'t be nil' if port.nil?
  raise 'Port has to be of type Integer' unless port.is_a?(Integer)
  raise 'Port can\'t be zero' if port.zero?
  raise 'Port can\'t be negative' if port.negative?
  raise 'Port can\'t be over 65536' if port > 0xffff
  modify do |list|
    list + [{ host: host.downcase, port: port, score: 0, errors: 0 }]
  end
end

#all ⇒ Object 



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# File 'lib/zold/remotes.rb', line 122

def all
  list = load
  max_score = list.map { |r| r[:score] }.max || 0
  max_score = 1 if max_score.zero?
  max_errors = list.map { |r| r[:errors] }.max || 0
  max_errors = 1 if max_errors.zero?
  list.sort_by do |r|
    (1 - r[:errors] / max_errors) * 5 + (r[:score] / max_score)
  end.reverse
end

#clean ⇒ Object 



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

def clean
  modify { [] }
end

#defaults ⇒ Object 



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# File 'lib/zold/remotes.rb', line 137

def defaults
  other = Remotes.new(file: File.expand_path(File.join(File.dirname(__FILE__), '../../resources/remotes')))
  other.all.each do |r|
    add(r[:host], r[:port])
  end
end

#error(host, port = Remotes::PORT) ⇒ Object 



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# File 'lib/zold/remotes.rb', line 211

def error(host, port = Remotes::PORT)
  raise 'Host can\'t be nil' if host.nil?
  raise 'Port can\'t be nil' if port.nil?
  raise 'Port has to be of type Integer' unless port.is_a?(Integer)
  if_present(host, port) { |r| r[:errors] += 1 }
end

#exists?(host, port = Remotes::PORT) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zold/remotes.rb', line 144

def exists?(host, port = Remotes::PORT)
  raise 'Port has to be of type Integer' unless port.is_a?(Integer)
  raise 'Host can\'t be nil' if host.nil?
  raise 'Port can\'t be nil' if port.nil?
  !load.find { |r| r[:host] == host.downcase && r[:port] == port }.nil?
end

#iterate(log, farm: Farm::Empty.new) ⇒ Object 



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# File 'lib/zold/remotes.rb', line 173

def iterate(log, farm: Farm::Empty.new)
  raise 'Log can\'t be nil' if log.nil?
  raise 'Farm can\'t be nil' if farm.nil?
  list = all
  return if list.empty?
  best = farm.best[0]
  require_relative 'score'
  score = best.nil? ? Score::ZERO : best
  idx = 0
  pool = Concurrent::FixedThreadPool.new([list.count, Concurrent.processor_count * 4].min, max_queue: 0)
  list.each do |r|
    pool.post do
      Thread.current.abort_on_exception = true
      Thread.current.name = "remotes-#{idx}@#{r[:host]}:#{r[:port]}"
      start = Time.now
      begin
        yield Remotes::Remote.new(
          host: r[:host],
          port: r[:port],
          score: score,
          idx: idx,
          log: log,
          network: network
        )
        raise 'Took too long to execute' if (Time.now - start).round > timeout
      rescue StandardError => e
        error(r[:host], r[:port])
        log.info("#{Rainbow("#{r[:host]}:#{r[:port]}").red}: #{e.message} in #{Age.new(start)}")
        log.debug(Backtrace.new(e).to_s)
        remove(r[:host], r[:port]) if errors > Remotes::TOLERANCE
      end
    end
    idx += 1
  end
  pool.shutdown
  pool.kill unless pool.wait_for_termination(5 * 60)
end

#mtime ⇒ Object 



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# File 'lib/zold/remotes.rb', line 226

def mtime
  File.exist?(file) ? File.mtime(file) : Time.now
end

#remove(host, port = Remotes::PORT) ⇒ Object 



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# File 'lib/zold/remotes.rb', line 164

def remove(host, port = Remotes::PORT)
  raise 'Port has to be of type Integer' unless port.is_a?(Integer)
  raise 'Host can\'t be nil' if host.nil?
  raise 'Port can\'t be nil' if port.nil?
  modify do |list|
    list.reject { |r| r[:host] == host.downcase && r[:port] == port }
  end
end

#rescore(host, port, score) ⇒ Object 



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# File 'lib/zold/remotes.rb', line 218

def rescore(host, port, score)
  raise 'Host can\'t be nil' if host.nil?
  raise 'Port can\'t be nil' if port.nil?
  raise 'Score can\'t be nil' if score.nil?
  raise 'Port has to be of type Integer' unless port.is_a?(Integer)
  if_present(host, port) { |r| r[:score] = score }
end