Class: Harbor::FileStore::File

Inherits:
Object
  • Object
show all
Defined in:
lib/harbor/file_store/file.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(store, path) ⇒ File

Returns a new instance of File.



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# File 'lib/harbor/file_store/file.rb', line 7

def initialize(store, path)
  @store = store
  @path = path
  
  @pending_writes = []
end

Instance Attribute Details

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/harbor/file_store/file.rb', line 5

def path
  @path
end

#store ⇒ Object

Returns the value of attribute store.



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# File 'lib/harbor/file_store/file.rb', line 5

def store
  @store
end

Instance Method Details

#absolute_path ⇒ Object

Returns the full path to this file



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# File 'lib/harbor/file_store/file.rb', line 90

def absolute_path
  (@store.root + @path).to_s
end

#copy_on_read ⇒ Object 



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# File 'lib/harbor/file_store/file.rb', line 27

def copy_on_read
  return @copy_on_read if @copy_on_read

  @copy_on_read = []
  if store.options[:copy_on_read]
    store.options[:copy_on_read].each do |name|
      @copy_on_read << Harbor::FileStore[name].get(@path)
    end
  end

  @copy_on_read
end

#copy_on_write ⇒ Object 



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# File 'lib/harbor/file_store/file.rb', line 14

def copy_on_write
  return @copy_on_write if @copy_on_write

  @copy_on_write = []
  if store.options[:copy_on_write]
    store.options[:copy_on_write].each do |name|
      @copy_on_write << Harbor::FileStore[name].get(@path)
    end
  end

  @copy_on_write
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/harbor/file_store/file.rb', line 94

def exists?
  store.exists?(path)
end

#open(mode = "r") ⇒ Object 



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# File 'lib/harbor/file_store/file.rb', line 83

def open(mode = "r")
  @stream ||= store.open(path, mode)
end

#read(bytes = nil) ⇒ Object 



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# File 'lib/harbor/file_store/file.rb', line 64

def read(bytes = nil)
  open("r")

  data = @stream.read(bytes)

  copy_on_read.each { |file| file.write(data) }

  unless bytes && data
    @stream.close
    @stream = nil
  end

  data
end

#size ⇒ Object 



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# File 'lib/harbor/file_store/file.rb', line 79

def size
  store.size(path)
end

#write(data) ⇒ Object 



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# File 'lib/harbor/file_store/file.rb', line 40

def write(data)
  open("wb")

  copy_on_write.each do |file|
    if store.options[:async_copy]
      @pending_writes << lambda { file.write(data) }
    else
      file.write(data)
    end
  end

  if data
    @stream.write(data)
  else
    @stream.close
    @stream = nil
    
    Thread.new {
      @pending_writes.each { |write| write.call }
      @pending_writes = []
    } if store.options[:async_copy]
  end
end