Class: Backup::Jar

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file_item, root_path, local_path) ⇒ Jar

Returns a new instance of Jar.



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# File 'lib/backup/jar.rb', line 3

def initialize(file_item, root_path, local_path)
  @root_path = root_path
  @local_path = local_path
  @timestamp = Backup::Timestamp.create
  @file_item = file_item
end

Class Method Details

.all(file_item, root_path) ⇒ Object 



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# File 'lib/backup/jar.rb', line 116

def all(file_item, root_path)
  hashes = file_item.dir("#{root_path}/meta/jars").map do |backup|
    backup[/[0-9a-z]{32}$/]
  end.compact.sort

  result = {}

  hashes.each do |hash|
    jar_local_path = Jar.hash_to_path(file_item, root_path, hash)
    result[jar_local_path] = hash unless jar_local_path.empty?
  end

  result
end

.fetch_index_for(file_item, root_path, hash, timestamp) ⇒ Object 



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# File 'lib/backup/jar.rb', line 143

def fetch_index_for(file_item, root_path, hash, timestamp)
  index = file_item.read_file "#{root_path}/meta/#{hash}/#{timestamp}.yml"
  YAML::load(index) unless index.nil?
end

.hash_to_path(file_item, root_path, hash) ⇒ Object 



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# File 'lib/backup/jar.rb', line 110

def hash_to_path(file_item, root_path, hash)
  file_item.read_file("#{root_path}/meta/jars/#{hash}").chomp
rescue Errno::ENOENT
  ""
end

.jar_versions(file_item, root_path, jar, hash = false) ⇒ Object 



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# File 'lib/backup/jar.rb', line 131

def jar_versions(file_item, root_path, jar, hash = false)
  jar = jar.chop if jar =~ /\/$/
  jar = Digest::MD5.hexdigest(jar) unless hash

  meta_jar_path = "#{root_path}/meta/#{jar}"

  file_item.dir(meta_jar_path, "*.yml").map do |file|
    match = file.match(/^\/?([0-9]{12}).yml$/)
    match[1] if match
  end.compact.sort
end

Instance Method Details

#hash_local_files ⇒ Object 



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# File 'lib/backup/jar.rb', line 85

def hash_local_files
  files = {}

  puts_verbose "Create index for #{@local_path.dark_green}"

  if Dir.exists? @local_path
    matches = Dir.glob(File.join(@local_path, "/**/*"), File::FNM_DOTMATCH)

    matches = matches.select do |match|
      match[/\/..$/].nil? and match[/\/.$/].nil?
    end

    matches << @local_path

    matches.each do |match|
      files.merge!(@file_item.stat(match, @timestamp))
    end
  else
    files = @file_item.stat(@local_path, @timestamp)
  end

  files
end

#jar_hash ⇒ Object 



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# File 'lib/backup/jar.rb', line 10

def jar_hash
  Digest::MD5.hexdigest(@local_path)
end

#save(increment = false) ⇒ Object 



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# File 'lib/backup/jar.rb', line 14

def save(increment = false)
  unless increment
    @local_files = hash_local_files
  else
    @local_files = {}
    current_files = hash_local_files

    last_timestamp = Jar.jar_versions(@root_path, jar_hash, true).last

    if last_timestamp.nil?
      puts_fail "First you must create a full backup for #{@local_path.dark_green}"
    end

    last_index = Jar.fetch_index_for(@root_path, jar_hash, last_timestamp)

    current_files.keys.each do |file|
      @local_files[file] = current_files[file]

      #TODO: Cut to a new method {
      current = current_files[file].dup
      current.delete(:timestamp)

      unless last_index[file].nil?
        backup = last_index[file].dup
        backup.delete(:timestamp)

        if (current == backup) or
           (!current[:checksum].nil? and current[:checksum] == backup[:checksum])

          @local_files[file][:timestamp] = last_index[file][:timestamp]
        end
      end
      # }
    end
  end

  @file_item.create_directory_once meta_jars_path, meta_jar_path, jar_data_path
  @file_item.create_file_once(
  	"#{meta_jars_path}/#{jar_hash}",
    @file_item.semantic_path(@local_path)
  )
  @file_item.create_file_once(
  	"#{meta_jar_path}/#{@timestamp}.yml",
    @local_files.to_yaml
			)

  if @file_item.is_a? Backup::FileItem::Cloud
    pbar = ProgressBar.new(
    	"Uploading",
      @local_files.keys.count
    )
  else
    pbar = ProgressBar.new(
    	"Copying",
      @local_files.keys.count
    )
  end

  pbar.bar_mark = '*'

  @local_files.keys.each do |file|
    unless Dir.exists?(file)
      @file_item.create_file_once "#{jar_data_path}/#{@file_item.file_hash file}",
                                  File.open(file)
      pbar.inc
    end
  end

  pbar.finish
end