lib/zold/commands/push.rb
# frozen_string_literal: true
# Copyright (c) 2018-2023 Zerocracy
#
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require 'rainbow'
require 'slop'
require 'json'
require 'net/http'
require 'concurrent'
require_relative 'thread_badge'
require_relative 'args'
require_relative '../thread_pool'
require_relative '../hands'
require_relative '../age'
require_relative '../size'
require_relative '../tax'
require_relative '../log'
require_relative '../id'
require_relative '../http'
require_relative '../json_page'
# PUSH command.
# Author:: Yegor Bugayenko (yegor256@gmail.com)
# Copyright:: Copyright (c) 2018 Yegor Bugayenko
# License:: MIT
module Zold
# Wallet pushing command
class Push
prepend ThreadBadge
# Raises when there are only edge nodes and not a single master one.
class EdgesOnly < StandardError; end
# Raises when there are not enough successful nodes.
class NoQuorum < StandardError; end
def initialize(wallets:, remotes:, log: Log::NULL)
@wallets = wallets
@remotes = remotes
@log = log
end
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
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
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
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
end
end