Class: Puppet::FileBucket::Dipper

Inherits:
Object
  • Object
show all
Includes:
Util::Checksums
Defined in:
lib/puppet/file_bucket/dipper.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Util::Checksums

#checksum?, #ctime, #ctime_file, #known_checksum_types, #md5, #md5_file, #md5_hex_length, #md5_stream, #md5lite, #md5lite_file, #mtime, #mtime_file, #mtime_stream, #none, #none_file, #none_stream, #sha1, #sha1_file, #sha1_hex_length, #sha1_stream, #sha1lite, #sha1lite_file, #sha256, #sha256_file, #sha256_hex_length, #sha256_stream, #sha256lite, #sha256lite_file, #sumdata, #sumtype

Constructor Details

#initialize(hash = {}) ⇒ Dipper

Create our bucket client



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# File 'lib/puppet/file_bucket/dipper.rb', line 14

def initialize(hash = {})
  # Emulate the XMLRPC client
  server      = hash[:Server]
  port        = hash[:Port] || Puppet[:masterport]
  environment = Puppet[:environment]

  if hash.include?(:Path)
    @local_path = hash[:Path]
    @rest_path  = nil
  else
    @local_path = nil
    @rest_path = "https://#{server}:#{port}/#{environment}/file_bucket_file/"
  end
  @checksum_type = Puppet[:digest_algorithm].to_sym
  @digest = method(@checksum_type)
end

Instance Attribute Details

#name ⇒ Object

This is a transitional implementation that uses REST to access remote filebucket files.



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# File 'lib/puppet/file_bucket/dipper.rb', line 11

def name
  @name
end

Instance Method Details

#backup(file) ⇒ Object

Back up a file to our bucket

Raises:

  • (ArgumentError) 


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# File 'lib/puppet/file_bucket/dipper.rb', line 36

def backup(file)
  file_handle = Puppet::FileSystem.pathname(file)
  raise(ArgumentError, "File #{file} does not exist") unless Puppet::FileSystem.exist?(file_handle)
  contents = Puppet::FileSystem.binread(file_handle)
  begin
    file_bucket_file = Puppet::FileBucket::File.new(contents, :bucket_path => @local_path)
    files_original_path = absolutize_path(file)
    dest_path = "#{@rest_path}#{file_bucket_file.name}/#{files_original_path}"
    file_bucket_path = "#{@rest_path}#{file_bucket_file.checksum_type}/#{file_bucket_file.checksum_data}/#{files_original_path}"

    # Make a HEAD request for the file so that we don't waste time
    # uploading it if it already exists in the bucket.
    unless Puppet::FileBucket::File.indirection.head(file_bucket_path)
      Puppet::FileBucket::File.indirection.save(file_bucket_file, dest_path)
    end

    return file_bucket_file.checksum_data
  rescue => detail
    message = "Could not back up #{file}: #{detail}"
    Puppet.log_exception(detail, message)
    raise Puppet::Error, message, detail.backtrace
  end
end

#getfile(sum) ⇒ Object

Retrieve a file by sum.

Raises:



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# File 'lib/puppet/file_bucket/dipper.rb', line 61

def getfile(sum)
  source_path = "#{@rest_path}#{@checksum_type}/#{sum}"
  file_bucket_file = Puppet::FileBucket::File.indirection.find(source_path, :bucket_path => @local_path)

  raise Puppet::Error, "File not found" unless file_bucket_file
  file_bucket_file.to_s
end

#local? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/file_bucket/dipper.rb', line 31

def local?
  !! @local_path
end

#restore(file, sum) ⇒ Object

Restore the file



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# File 'lib/puppet/file_bucket/dipper.rb', line 70

def restore(file,sum)
  restore = true
  file_handle = Puppet::FileSystem.pathname(file)
  if Puppet::FileSystem.exist?(file_handle)
    cursum = @digest.call(Puppet::FileSystem.binread(file_handle))

    # if the checksum has changed...
    # this might be extra effort
    if cursum == sum
      restore = false
    end
  end

  if restore
    if newcontents = getfile(sum)
      newsum = @digest.call(newcontents)
      changed = nil
      if Puppet::FileSystem.exist?(file_handle) and ! Puppet::FileSystem.writable?(file_handle)
        changed = Puppet::FileSystem.stat(file_handle).mode
        ::File.chmod(changed | 0200, file)
      end
      ::File.open(file, ::File::WRONLY|::File::TRUNC|::File::CREAT) { |of|
        of.binmode
        of.print(newcontents)
      }
      ::File.chmod(changed, file) if changed
    else
      Puppet.err "Could not find file with checksum #{sum}"
      return nil
    end
    return newsum
  else
    return nil
  end
end