Class: Remotebackup::BackupInfo

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ BackupInfo

Returns a new instance of BackupInfo.



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# File 'lib/remotebackup.rb', line 13

def initialize(args)
  @mod = false
  @name = args["name"] || args["server"]
  @server = args["server"]
  @user = args["user"]
  @options = {}
  @options[:port] = args["port"].to_i if args["port"]
  @options[:password] = args["password"] if args["password"]
  @options[:passphrase] = args["passphrase"] if args["passphrase"]
  if args["key"]
    @options[:keys] = [File.expand_path(args["key"])] 
  end
  @path = args["path"]
  @ignore_list = args["ignore_list"] || []
  @nowTime = DateTime.now
  @file_map = {"file" => Hash.new,"symbolic" => Hash.new,"directory"=>Array.new}
  Net::SSH.start(@server,@user,@options) { |session|
    make_file_map_list(session,"")
  }
end

Instance Attribute Details

#file_map ⇒ Object

Returns the value of attribute file_map.



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# File 'lib/remotebackup.rb', line 12

def file_map
  @file_map
end

#last_file ⇒ Object

Returns the value of attribute last_file.



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# File 'lib/remotebackup.rb', line 12

def last_file
  @last_file
end

#mod ⇒ Object

Returns the value of attribute mod.



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# File 'lib/remotebackup.rb', line 12

def mod
  @mod
end

Instance Method Details

#cleanFileInfo ⇒ Object 



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# File 'lib/remotebackup.rb', line 111

def cleanFileInfo()
  FileUtils.touch([@last_file])
end

#date_to_filename ⇒ Object 



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# File 'lib/remotebackup.rb', line 184

def date_to_filename()
  @nowTime.year.to_s + "_" + zeropadd(@nowTime.month) + "_" + zeropadd(@nowTime.day) + "_" + zeropadd(@nowTime.hour) + "_" + zeropadd(@nowTime.min) 
end

#differencial_copy(out_dir) ⇒ Object 



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# File 'lib/remotebackup.rb', line 128

def differencial_copy(out_dir)
  output_dir = out_dir + "/" + @name
  FileUtils.mkdir_p(output_dir)
  old_file_info_map = load_last_yaml(output_dir)
  @file_map["directory"].each do |dir|
    unless old_file_info_map["directory"].include?(dir)
      @mod = true
      msg_out "create directory:#{dir}"
      FileUtils.mkdir_p(output_dir + "/" + dir)
    end
  end
  old_file_map = old_file_info_map["symbolic"]
  @file_map["symbolic"].each do |key,val|
    if !old_file_map[key] || old_file_map[key]["source"] != val["source"]
      @mod = true
      if !old_file_map[key]  
        msg_out "create symbolic:#{key}"
      else
        msg_out "modified symbolic:#{key}"
      end
    end
  end
  old_file_map = old_file_info_map["file"]
  Net::SSH.start(@server, @user,@options) do |ssh|
    @file_map["file"].each do |key,val|
      utf8_key = key.dup.force_encoding("utf-8") if key.respond_to?(:force_encoding)
      if !old_file_map[utf8_key] || old_file_map[utf8_key]["date"] != val["date"] 
        @mod = true
        file_name = output_dir + "/" + key + date_to_filename
        orig = "#{@path}/#{key}"
        msg_out "scp #{orig} #{file_name}"
        begin
          ssh.scp.download!(orig,file_name)
        rescue
          $log.error("#{orig} can't copy. ignore.")
          next
        end
        val["file_name"] = file_name
        if !old_file_map[utf8_key]
          msg_out "create file:#{key}"
        else
          msg_out "modified file:#{key}"
        end
      else
        val["file_name"] = old_file_map[utf8_key]["file_name"]
      end
    end
  end
end

#ignore_check(target) ⇒ Object 



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# File 'lib/remotebackup.rb', line 33

def ignore_check(target)
  @ignore_list.each do |ignore|
    if target =~ /#{ignore}/
      return false
    end
  end
  return true
end

#load_last_yaml(output_dir) ⇒ Object 



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# File 'lib/remotebackup.rb', line 114

def load_last_yaml(output_dir)
  files = Array.new
  if FileTest.directory?(output_dir)
    dirs = Dir.glob(output_dir+ "/*.yml")
    dirs.each do |file|
      files.push file
    end
  end
  if files.length == 0
    return {"file" => Hash.new,"symbolic" => Hash.new,"directory"=>Array.new}
  end
  @last_file = files.sort.pop
  return YAML.load(File.read(@last_file))
end

#make_file_map_list(session, target) ⇒ Object 



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# File 'lib/remotebackup.rb', line 41

def make_file_map_list(session,target)
  if target != ""
    target_path = @path +"/"+target
  else
    target_path = @path
  end
  cmd = "export LANG=C;ls -la #{target_path}"
  out = ""
  channel = session.open_channel do |ch|
    ch.exec cmd do |ch,success|
      ch.on_data do |c,data|
        out += data
      end
    end
  end
  channel.wait
  if out =~ /No such file/
    $log.error("can't open path:#{target_path}") 
    return
  end
  if out == ""
    return
  end
  lines = StringIO.new(out).readlines
  if !Node.build(lines[0].chomp)
    @file_map["directory"].push target unless target == ""
    makeFileMap(session,target,lines)
  else
    node = Node.build(lines[0].chomp)
    if node.ftype == :symbolic
      @file_map["symbolic"][File.basename(@path)] = node.make_map.call
    elsif node.ftype == :file
      @file_map["file"][File.basename(@path)] = node.make_map.call
    end
  end
end

#makeFileMap(session, target, lines) ⇒ Object 



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# File 'lib/remotebackup.rb', line 77

def makeFileMap(session,target,lines)
  lines.each do |line|
    node = Node.build(line.chomp)
    next unless node
    if  not node.name or node.name == "." or node.name == ".." 
      next
    end
    if target != ""
      target_name = target +"/"+ node.name
    else
      target_name = node.name
    end
    unless ignore_check(target_name)
      next
    end
    case node.ftype
    when :directory
      make_file_map_list(session,target_name)
    when :special
      next
    when :file
      @file_map["file"][target_name] = node.make_map.call
    when :symbolic
      @file_map["symbolic"][target_name] = node.make_map.call
    end
  end
end

#outputYaml(out_dir) ⇒ Object 



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# File 'lib/remotebackup.rb', line 104

def outputYaml(out_dir)
  output_dir = out_dir + "/" + @name
  f = output_dir + "/" + date_to_filename + ".yml"
  File.open(f,"w") do |f|
    f.write YAML.dump(@file_map)
  end
end

#zeropadd(i) ⇒ Object 



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# File 'lib/remotebackup.rb', line 177

def zeropadd(i)
  if i < 10
    "0" + i.to_s
  else
    i.to_s
  end
end