class Puppet::FileServing::HttpMetadata

   # File lib/puppet/file_serving/http_metadata.rb
 8 def initialize(http_response, path = '/dev/null')
 9   super(path)
10 
11   # ignore options that do not apply to HTTP metadata
12   @owner = @group = @mode = nil
13 
14   # hash available checksums for eventual collection
15   @checksums = {}
16   # use a default mtime in case there is no usable HTTP header
17   @checksums[:mtime] = "{mtime}#{Time.now}"
18 
19   # RFC-1864, deprecated in HTTP/1.1 due to partial responses
20   checksum = http_response['content-md5']
21   if checksum
22     # convert base64 digest to hex
23     checksum = checksum.unpack("m").first.unpack("H*").first
24     @checksums[:md5] = "{md5}#{checksum}"
25   end
26 
27   {
28     md5: 'X-Checksum-Md5',
29     sha1: 'X-Checksum-Sha1',
30     sha256: 'X-Checksum-Sha256'
31   }.each_pair do |checksum_type, header|
32     checksum = http_response[header]
33     if checksum
34       @checksums[checksum_type] = "{#{checksum_type}}#{checksum}"
35     end
36   end
37 
38   last_modified = http_response['last-modified']
39   if last_modified
40     mtime = DateTime.httpdate(last_modified).to_time
41     @checksums[:mtime] = "{mtime}#{mtime.utc}"
42   end
43 
44   @ftype = 'file'
45 
46   self
47 end

   # File lib/puppet/file_serving/http_metadata.rb
52 def collect
53   # Prefer the checksum_type from the indirector request options
54   # but fall back to the alternative otherwise
55   [ @checksum_type, :sha256, :sha1, :md5, :mtime ].each do |type|
56     @checksum_type = type
57     @checksum = @checksums[type]
58     break if @checksum
59   end
60 end