Class: StoreAgent::Node::Metadata

Inherits:
Attachment show all
Defined in:
lib/store_agent/node/attachment/metadata.rb

Overview

ファイルサイズ、作成者、更新日時などの情報

Direct Known Subclasses

SuperRootMetadata

Defined Under Namespace

Classes: SuperRootMetadata

Instance Attribute Summary

Attributes inherited from Attachment

#object

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Attachment

#data, #initialize, #inspect, #load, #reload, #save

Methods included from Validator

#validates_to_be_excluded_slash!, #validates_to_be_not_guest_identifier!, #validates_to_be_not_nil_value!, #validates_to_be_not_superuser_identifier!, #validates_to_be_string_or_symbol!

Constructor Details

This class inherits a constructor from StoreAgent::Node::Attachment

Class Method Details

.datasize_format(size) ⇒ Object

ディスク使用量をバイトからキロバイトなどの単位に変換するメソッド



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# File 'lib/store_agent/node/attachment/metadata.rb', line 55

def self.datasize_format(size)
  byte_names = %w(KB MB GB TB PB)
  byte_length = size.abs.to_s(2).length
  if byte_length <= 10
    "#{size} bytes"
  else
    exponent = [byte_names.length, (byte_length - 1) / 10].min
    sprintf("%0.2f%s", size.to_f / (2 ** (10 * exponent)), byte_names[exponent - 1])
  end
end

Instance Method Details

#base_path ⇒ Object

:nodoc:



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# File 'lib/store_agent/node/attachment/metadata.rb', line 45

def base_path # :nodoc:
  "#{@object.workspace.metadata_dirname}#{@object.path}"
end

#create ⇒ Object 



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# File 'lib/store_agent/node/attachment/metadata.rb', line 23

def create
  super
  parent.update(disk_usage: disk_usage, directory_file_count: 1, tree_file_count: 1, recursive: true)
end

#delete ⇒ Object 



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# File 'lib/store_agent/node/attachment/metadata.rb', line 40

def delete
  parent.update(disk_usage: -disk_usage, directory_file_count: -1, tree_file_count: -1, recursive: true)
  super
end

#disk_usage ⇒ Object 



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# File 'lib/store_agent/node/attachment/metadata.rb', line 66

def disk_usage
  if directory?
    self["directory_bytes"]
  else
    self["bytes"]
  end
end

#disk_usage=(usage) ⇒ Object 



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# File 'lib/store_agent/node/attachment/metadata.rb', line 74

def disk_usage=(usage)
  usage_string = StoreAgent::Node::Metadata.datasize_format(usage)
  if directory?
    self["directory_size"] = usage_string
    self["directory_bytes"] = usage
  else
    self["size"] = usage_string
    self["bytes"] = usage
  end
end

#file_path ⇒ Object

オブジェクトのメタデータを保存しているファイルの絶対パス



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# File 'lib/store_agent/node/attachment/metadata.rb', line 50

def file_path
  "#{base_path}#{StoreAgent.config.metadata_extension}"
end

#owner=(identifier) ⇒ Object 



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# File 'lib/store_agent/node/attachment/metadata.rb', line 85

def owner=(identifier)
  self["owner"] = identifier
end

#update(disk_usage: 0, directory_file_count: 0, tree_file_count: 0, recursive: false) ⇒ Object 



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# File 'lib/store_agent/node/attachment/metadata.rb', line 28

def update(disk_usage: 0, directory_file_count: 0, tree_file_count: 0, recursive: false)
  if directory?
    self["directory_file_count"] += directory_file_count
    self["tree_file_count"] += tree_file_count
  end
  self.disk_usage += disk_usage
  save
  if recursive
    parent.update(disk_usage: disk_usage, tree_file_count: tree_file_count, recursive: recursive)
  end
end

#updated_at=(time) ⇒ Object 



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# File 'lib/store_agent/node/attachment/metadata.rb', line 89

def updated_at=(time)
  self["updated_at"] = time.to_s
  self["updated_at_unix_timestamp"] = time.to_i
end