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: Loog::NULL) ⇒ Copies

Returns a new instance of Copies.



26
27
28
29
 
# File 'lib/zold/copies.rb', line 26

def initialize(dir, log: Loog::NULL)
  @dir = dir
  @log = log
end

Instance Method Details

#add(content, host, port, score, time: Time.now, master: false) ⇒ Object

Returns the name of the copy



87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
 
# File 'lib/zold/copies.rb', line 87

def add(content, host, port, score, time: Time.now, master: false)
  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?
  FileUtils.mkdir_p(@dir)
  Futex.new(file, log: @log).open do
    list = load
    target = list.find do |s|
      f = File.join(@dir, "#{s[:name]}#{Copies::EXT}")
      digest = OpenSSL::Digest::SHA256.new(content).hexdigest
      File.exist?(f) && OpenSSL::Digest::SHA256.file(f).hexdigest == digest
    end
    if target.nil?
      max = DirItems.new(@dir).fetch
        .select { |f| File.basename(f, Copies::EXT) =~ /^[0-9]+$/ }
        .map(&:to_i)
        .max
      max = 0 if max.nil?
      name = (max + 1).to_s
      File.write(File.join(@dir, "#{name}#{Copies::EXT}"), 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,
      master: master
    }
    save(list)
    name
  end
end

#all(masters_first: true) ⇒ Object 



128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
 
# File 'lib/zold/copies.rb', line 128

def all(masters_first: true)
  Futex.new(file, log: @log).open(false) do
    list = load.group_by { |s| s[:name] }.map do |name, scores|
      {
        name: name,
        path: File.join(@dir, "#{name}#{Copies::EXT}"),
        total: scores.count,
        master: scores.any? { |s| s[:master] },
        score: scores.select { |s| s[:time] > Time.now - (24 * 60 * 60) }.sum { |s| s[:score] } || 0
      }
    end.select { |c| File.exist?(c[:path]) }
    if masters_first
      list.sort_by! { |c| [c[:master] ? 1 : 0, c[:score].to_s.rjust(5, '0')] }
    else
      list.sort_by! { |c| c[:score] }
    end
    list.reverse
  end
end

#clean(max: 24 * 60 * 60) ⇒ Object

Delete all copies that are older than the “max” age provided, in seconds.



40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
 
# File 'lib/zold/copies.rb', line 40

def clean(max: 24 * 60 * 60)
  Futex.new(file, log: @log).open do
    list = load
    list.reject! do |s|
      if s[:time] >= Time.now - max
        false
      else
        @log.debug("Copy ##{s[:name]}/#{s[:host]}:#{s[:port]} is too old, over #{Age.new(s[:time])}")
        true
      end
    end
    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
    list.select! do |s|
      cp = File.join(@dir, "#{s[:name]}#{Copies::EXT}")
      wallet = Wallet.new(cp)
      begin
        wallet.refurbish
        raise "Invalid protocol #{wallet.protocol} in #{cp}" unless wallet.protocol == Zold::PROTOCOL
        true
      rescue StandardError => e
        FileUtils.rm_rf(cp)
        @log.debug("Copy at #{cp} deleted: #{Backtrace.new(e)}")
        deleted += 1
        false
      end
    end
    save(list)
    deleted
  end
end

#load ⇒ Object 



148
149
150
151
152
153
154
155
156
157
158
159
160
161
 
# File 'lib/zold/copies.rb', line 148

def load
  FileUtils.mkdir_p(File.dirname(file))
  FileUtils.touch(file)
  CSV.read(file).select { |s| s.count == 6 }.map do |s|
    {
      name: s[0],
      host: s[1],
      port: s[2].to_i,
      score: s[3].to_i,
      time: Txn.parse_time(s[4]),
      master: s[5] == 'M'
    }
  end
end

#remove(host, port) ⇒ Object 



80
81
82
83
84
 
# File 'lib/zold/copies.rb', line 80

def remove(host, port)
  Futex.new(file, log: @log).open do
    save(load.reject { |s| s[:host] == host && s[:port] == port })
  end
end

#root ⇒ Object 



31
32
33
 
# File 'lib/zold/copies.rb', line 31

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

#to_s ⇒ Object 



35
36
37
 
# File 'lib/zold/copies.rb', line 35

def to_s
  File.basename(@dir)
end