class Zold::Push

Wallet pushing command

Public Class Methods

new(wallets:, remotes:, log: Log::NULL) click to toggle source
# File lib/zold/commands/push.rb, line 55
def initialize(wallets:, remotes:, log: Log::NULL)
  @wallets = wallets
  @remotes = remotes
  @log = log
end

Public Instance Methods

run(args = []) click to toggle source
# File lib/zold/commands/push.rb, line 61
    def run(args = [])
      opts = Slop.parse(args, help: true, suppress_errors: true) do |o|
        o.banner = "Usage: zold push [ID...] [options]
Available options:"
        o.bool '--ignore-score-weakness',
          'Don\'t complain when their score is too weak',
          default: false
        o.bool '--tolerate-edges',
          'Don\'t fail if only "edge" (not "master" ones) nodes accepted the wallet',
          default: false
        o.integer '--tolerate-quorum',
          'The minimum number of nodes required for a successful fetch (default: 4)',
          default: 4
        o.bool '--quiet-if-missed',
          'Don\'t fail if the wallet wasn\'t delivered to any remotes',
          default: false
        o.array '--ignore-node',
          'Ignore this node and don\'t push to it',
          default: []
        o.integer '--threads',
          'How many threads to use for pushing wallets (default: 1)',
          default: 1
        o.integer '--retry',
          'How many times to retry each node before reporting a failure (default: 2)',
          default: 2
        o.bool '--help', 'Print instructions'
      end
      mine = Args.new(opts, @log).take || return
      list = mine.empty? ? @wallets.all : mine.map { |i| Id.new(i) }
      Hands.exec(opts['threads'], list.uniq) do |id|
        push(id, opts)
      end
    end

Private Instance Methods

push(id, opts) click to toggle source
# File lib/zold/commands/push.rb, line 97
    def push(id, opts)
      raise "There are no remote nodes, run 'zold remote reset'" if @remotes.all.empty?
      @wallets.acq(id) do |wallet|
        raise "The wallet #{id} is absent at #{wallet.path}" unless wallet.exists?
      end
      if @wallets.acq(id) { |w| Tax.new(w).in_debt? }
        @log.info("Taxes in #{id} are not paid, most likely the wallet won't be accepted by any node")
      end
      start = Time.now
      total = Concurrent::AtomicFixnum.new
      nodes = Concurrent::AtomicFixnum.new
      done = Concurrent::AtomicFixnum.new
      masters = Concurrent::AtomicFixnum.new
      @remotes.iterate(@log) do |r|
        nodes.increment
        total.increment(push_one(id, r, opts))
        masters.increment if r.master?
        done.increment
      end
      unless opts['quiet-if-missed']
        if done.value.zero?
          raise "No nodes out of #{nodes.value} accepted the wallet #{id}; run 'zold remote update' and try again"
        end
        if masters.value.zero? && !opts['tolerate-edges']
          raise EdgesOnly, "There are only edge nodes, run 'zold remote update' or use --tolerate-edges"
        end
        if nodes.value < opts['tolerate-quorum']
          raise NoQuorum, "There were not enough nodes, the required quorum is #{opts['tolerate-quorum']}; \
run 'zold remote update' or use --tolerate-quorum=1"
        end
      end
      @log.info("Push finished to #{done.value - masters.value}+#{masters.value}m nodes \
out of #{nodes.value} in #{Age.new(start)}, total score for #{id} is #{total.value}")
    end
push_one(id, r, opts) click to toggle source
# File lib/zold/commands/push.rb, line 132
    def push_one(id, r, opts)
      if opts['ignore-node'].include?(r.to_s)
        @log.debug("#{r} ignored because of --ignore-node")
        return 0
      end
      start = Time.now
      read_one(id, r, opts) do |json, score|
        r.assert_valid_score(score)
        r.assert_score_ownership(score)
        r.assert_score_strength(score) unless opts['ignore-score-weakness']
        @log.debug("#{r} accepted #{@wallets.acq(id, &:mnemo)} in #{Age.new(start, limit: 4)}: \
#{Rainbow(score.value).green} (#{json['version']})")
        score.value
      end
    end
read_one(id, r, opts) { |json, score| ... } click to toggle source
# File lib/zold/commands/push.rb, line 148
    def read_one(id, r, opts)
      start = Time.now
      uri = "/wallet/#{id}"
      attempt = 0
      begin
        response = Tempfile.open do |f|
          @wallets.acq(id) { |w| FileUtils.copy_file(w.path, f.path) }
          r.http(uri).put(f)
        end
        if response.status == 304
          @log.debug("#{r}: same version of #{@wallets.acq(id, &:mnemo)} there, didn't push \
in #{Age.new(start, limit: 0.5)}")
          return 0
        end
        r.assert_code(200, response)
        json = JsonPage.new(response.body, uri).to_hash
        score = Score.parse_json(json['score'])
        yield json, score
      rescue JsonPage::CantParse, Score::CantParse, RemoteNode::CantAssert => e
        attempt += 1
        if attempt < opts['retry']
          @log.debug("#{r} failed to push #{id}, trying again (attempt no.#{attempt}): #{e.message}")
          retry
        end
        raise e
      end
    end