class Chef::Provider::RemoteFile::HTTP

Attributes

current_resource[R]
new_resource[R]
uri[R]

Public Class Methods

new(uri, new_resource, current_resource) click to toggle source

Parse the uri into instance variables

# File lib/chef/provider/remote_file/http.rb, line 36
def initialize(uri, new_resource, current_resource)
  @uri = uri
  @new_resource = new_resource
  @current_resource = current_resource
end

Public Instance Methods

conditional_get_headers() click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 46
def conditional_get_headers
  cache_control_headers = {}
  if last_modified = cache_control_data.mtime and want_mtime_cache_control?
    cache_control_headers["if-modified-since"] = last_modified
  end
  if etag = cache_control_data.etag and want_etag_cache_control?
    cache_control_headers["if-none-match"] = etag
  end
  Chef::Log.debug("Cache control headers: #{cache_control_headers.inspect}")
  cache_control_headers
end
fetch() click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 58
def fetch
  http = Chef::HTTP::Simple.new(uri, http_client_opts)
  tempfile = http.streaming_request(uri, headers)
  if tempfile
    update_cache_control_data(tempfile, http.last_response)
    tempfile.close
  end
  tempfile
end
headers() click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 42
def headers
  conditional_get_headers.merge(new_resource.headers)
end

Private Instance Methods

cache_control_data() click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 77
def cache_control_data
  @cache_control_data ||= CacheControlData.load_and_validate(uri, current_resource.checksum)
end
etag_from(response) click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 93
def etag_from(response)
  response['etag']
end
http_client_opts() click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 97
def http_client_opts
  opts={}
  # CHEF-3140
  # 1. If it's already compressed, trying to compress it more will
  # probably be counter-productive.
  # 2. Some servers are misconfigured so that you GET $URL/file.tgz but
  # they respond with content type of tar and content encoding of gzip,
  # which tricks Chef::REST into decompressing the response body. In this
  # case you'd end up with a tar archive (no gzip) named, e.g., foo.tgz,
  # which is not what you wanted.
  if uri.to_s =~ /gz$/
    Chef::Log.debug("turning gzip compression off due to filename ending in gz")
    opts[:disable_gzip] = true
  end
  opts
end
last_modified_time_from(response) click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 89
def last_modified_time_from(response)
  response['last_modified'] || response['date']
end
update_cache_control_data(tempfile, response) click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 70
def update_cache_control_data(tempfile, response)
  cache_control_data.checksum = Chef::Digester.checksum_for_file(tempfile.path)
  cache_control_data.mtime = last_modified_time_from(response)
  cache_control_data.etag = etag_from(response)
  cache_control_data.save
end
want_etag_cache_control?() click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 85
def want_etag_cache_control?
  new_resource.use_etag
end
want_mtime_cache_control?() click to toggle source
# File lib/chef/provider/remote_file/http.rb, line 81
def want_mtime_cache_control?
  new_resource.use_last_modified
end