Class: Uricp::Strategy::PipedRemoteGet

Inherits:
Object
  • Object
show all
Includes:
Common
Defined in:
lib/uricp/strategy/piped_remote_get.rb

Constant Summary

Constants included from Common

Common::PIPE_URI

Instance Attribute Summary

Attributes included from Common

#proposed_options

Attributes included from CurlPrimitives

#options

Instance Method Summary collapse

Methods included from Common

#all_local_files?, #always_write_sparse?, #compression_required?, #conversion_required?, #encoding, #file_source?, #format_change?, #get_temp_filename, #initialize, #lz4?, #lz4_source?, #proposed_path, #qcow2?, #raw_target?, #segmented?, #sequence_complete?, #supported_source?, #temp_uri, #unsupported_transfer

Methods included from CurlPrimitives

#authentication, #curl_command, #curl_download_to_pipe, #curl_manifest, #curl_upload_from, #from, #from=, #http_authentication?, #to, #to=

Instance Method Details

#appropriate? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/uricp/strategy/piped_remote_get.rb', line 8

def appropriate?
  case from.scheme
  when 'http', 'https'
    return proposal unless sequence_complete?
  else
	debug "#{self.class.name}: not appropriate"
	false
  end
end

#format_peek ⇒ Object 



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# File 'lib/uricp/strategy/piped_remote_get.rb', line 39

def format_peek
  options['from_uri'].open(headers) do |u|
    encoding(u)
  end
rescue OpenURI::HTTPError => e
  case e.io.status[0]
  when '416'
    'raw'
  else
    raise
  end
rescue SocketError => e
  raise SocketError, options['from_uri'].to_s+" inaccessible: "+e.message
end

#headers ⇒ Object 



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# File 'lib/uricp/strategy/piped_remote_get.rb', line 72

def headers
  headers={'Range' => 'bytes=0-7'}
  headers['X-Auth-Token'] = options['authenticator'].call if http_authentication?
  headers
end

#proposal ⇒ Object 



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# File 'lib/uricp/strategy/piped_remote_get.rb', line 20

def proposal
  @proposed_options = options.dup
  @proposed_options['from_uri'] = PIPE_URI
  if conversion_required?
    @proposed_options['source-format'] = format_peek
	if @proposed_options['source-format'] == @proposed_options['target-format'] 
	  @proposed_options.delete('source-format')
	  @proposed_options.delete('target-format')
	end
  end
  if options['max-cache'] &&
    size_peek.to_i > options['max-cache'].to_i
	  @proposed_options.delete('cache')
	  @proposed_options.delete('cache_name')
	  @proposed_options.delete('max-cache')
  end
  self
end

#size_peek ⇒ Object 



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# File 'lib/uricp/strategy/piped_remote_get.rb', line 54

def size_peek
  size_headers=headers
  size_headers['Range'] = 'bytes=0-0'
  options['from_uri'].open(headers) do |u|
	match = %r<bytes\s+(\d+)-(\d+)/(\d+|\*)>i.match(u.meta['content-range'])
    match && match[3].to_i
  end
rescue OpenURI::HTTPError => e
  case e.io.status[0]
  when '416'
    0
  else
    raise
  end
rescue SocketError => e
  raise SocketError, options['from_uri'].to_s+" inaccessible: "+e.message
end