Class: Gem::RemoteFetcher
- Inherits:
-
Object
- Object
- Gem::RemoteFetcher
- Includes:
- UserInteraction
- Defined in:
- lib/rubygems/remote_fetcher.rb,
lib/rubygems/test_utilities.rb
Overview
:stopdoc:
Defined Under Namespace
Classes: FetchError, UnknownHostError
Class Method Summary collapse
-
.fetcher ⇒ Object
Cached RemoteFetcher instance.
- .fetcher=(fetcher) ⇒ Object
Instance Method Summary collapse
-
#api_endpoint(uri) ⇒ Object
Given a source at
uri
, calculate what hostname to actually connect to query the data for it. -
#cache_update_path(uri, path = nil, update = true) ⇒ Object
Downloads
uri
topath
if necessary. - #correct_for_windows_path(path) ⇒ Object
-
#download(spec, source_uri, install_dir = Gem.dir) ⇒ Object
Moves the gem
spec
fromsource_uri
to the cache dir unless it is already there. -
#download_to_cache(dependency) ⇒ Object
Given a name and requirement, downloads this gem into cache and returns the filename.
-
#fetch_file(uri, *_) ⇒ Object
File Fetcher.
-
#fetch_http(uri, last_modified = nil, head = false, depth = 0) ⇒ Object
(also: #fetch_https)
HTTP Fetcher.
-
#fetch_path(uri, mtime = nil, head = false) ⇒ Object
Downloads
uri
and returns it as a String. -
#fetch_size(uri) ⇒ Object
Returns the size of
uri
in bytes. - #https?(uri) ⇒ Boolean
-
#initialize(proxy = nil, dns = Resolv::DNS.new) ⇒ RemoteFetcher
constructor
Initialize a remote fetcher using the source URI and possible proxy information.
-
#request(uri, request_class, last_modified = nil) ⇒ Object
Performs a Net::HTTP request of type
request_class
onuri
returning a Net::HTTP response object.
Methods included from UserInteraction
#alert, #alert_error, #alert_warning, #ask, #ask_for_password, #ask_yes_no, #choose_from_list, #say, #terminate_interaction
Methods included from DefaultUserInteraction
ui, #ui, ui=, #ui=, use_ui, #use_ui
Constructor Details
#initialize(proxy = nil, dns = Resolv::DNS.new) ⇒ RemoteFetcher
Initialize a remote fetcher using the source URI and possible proxy information.
proxy
-
[String]: explicit specification of proxy; overrides any environment
variable setting
-
nil: respect environment variables (HTTP_PROXY, HTTP_PROXY_USER,
HTTP_PROXY_PASS)
-
:no_proxy
: ignore environment variables and _don’t_ use a proxy
dns
: An object to use for DNS resolution of the API endpoint.
By default, use Resolv::DNS.
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# File 'lib/rubygems/remote_fetcher.rb', line 67 def initialize(proxy=nil, dns=Resolv::DNS.new) require 'net/http' require 'stringio' require 'time' require 'uri' Socket.do_not_reverse_lookup = true @proxy = proxy @dns = dns end |
Class Method Details
.fetcher ⇒ Object
Cached RemoteFetcher instance.
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# File 'lib/rubygems/remote_fetcher.rb', line 49 def self.fetcher @fetcher ||= self.new Gem.configuration[:http_proxy] end |
.fetcher=(fetcher) ⇒ Object
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# File 'lib/rubygems/test_utilities.rb', line 173 def self.fetcher=(fetcher) @fetcher = fetcher end |
Instance Method Details
#api_endpoint(uri) ⇒ Object
Given a source at uri
, calculate what hostname to actually connect to query the data for it.
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# File 'lib/rubygems/remote_fetcher.rb', line 84 def api_endpoint(uri) host = uri.host begin res = @dns.getresource "_rubygems._tcp.#{host}", Resolv::DNS::Resource::IN::SRV rescue Resolv::ResolvError uri else URI.parse "#{uri.scheme}://#{res.target}#{uri.path}" end end |
#cache_update_path(uri, path = nil, update = true) ⇒ Object
Downloads uri
to path
if necessary. If no path is given, it just passes the data.
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# File 'lib/rubygems/remote_fetcher.rb', line 285 def cache_update_path uri, path = nil, update = true mtime = path && File.stat(path).mtime rescue nil if mtime && Net::HTTPNotModified === fetch_path(uri, mtime, true) Gem.read_binary(path) else data = fetch_path(uri) if update and path then open(path, 'wb') do |io| io.flock(File::LOCK_EX) io.write data end end data end end |
#correct_for_windows_path(path) ⇒ Object
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# File 'lib/rubygems/remote_fetcher.rb', line 313 def correct_for_windows_path(path) if path[0].chr == '/' && path[1].chr =~ /[a-z]/i && path[2].chr == ':' path = path[1..-1] else path end end |
#download(spec, source_uri, install_dir = Gem.dir) ⇒ Object
Moves the gem spec
from source_uri
to the cache dir unless it is already there. If the source_uri is local the gem cache dir copy is always replaced.
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# File 'lib/rubygems/remote_fetcher.rb', line 119 def download(spec, source_uri, install_dir = Gem.dir) cache_dir = if Dir.pwd == install_dir then # see fetch_command install_dir elsif File.writable? install_dir then File.join install_dir, "cache" else File.join Gem.user_dir, "cache" end gem_file_name = File.basename spec.cache_file local_gem_path = File.join cache_dir, gem_file_name FileUtils.mkdir_p cache_dir rescue nil unless File.exist? cache_dir # Always escape URI's to deal with potential spaces and such unless URI::Generic === source_uri source_uri = URI.parse(URI.const_defined?(:DEFAULT_PARSER) ? URI::DEFAULT_PARSER.escape(source_uri.to_s) : URI.escape(source_uri.to_s)) end scheme = source_uri.scheme # URI.parse gets confused by MS Windows paths with forward slashes. scheme = nil if scheme =~ /^[a-z]$/i # REFACTOR: split this up and dispatch on scheme (eg download_http) # REFACTOR: be sure to clean up fake fetcher when you do this... cleaner case scheme when 'http', 'https' then unless File.exist? local_gem_path then begin say "Downloading gem #{gem_file_name}" if Gem.configuration.really_verbose remote_gem_path = source_uri + "gems/#{gem_file_name}" self.cache_update_path remote_gem_path, local_gem_path rescue Gem::RemoteFetcher::FetchError raise if spec.original_platform == spec.platform alternate_name = "#{spec.original_name}.gem" say "Failed, downloading gem #{alternate_name}" if Gem.configuration.really_verbose remote_gem_path = source_uri + "gems/#{alternate_name}" self.cache_update_path remote_gem_path, local_gem_path end end when 'file' then begin path = source_uri.path path = File.dirname(path) if File.extname(path) == '.gem' remote_gem_path = correct_for_windows_path(File.join(path, 'gems', gem_file_name)) FileUtils.cp(remote_gem_path, local_gem_path) rescue Errno::EACCES local_gem_path = source_uri.to_s end say "Using local gem #{local_gem_path}" if Gem.configuration.really_verbose when nil then # TODO test for local overriding cache source_path = if Gem.win_platform? && source_uri.scheme && !source_uri.path.include?(':') then "#{source_uri.scheme}:#{source_uri.path}" else source_uri.path end source_path = Gem::UriFormatter.new(source_path).unescape begin FileUtils.cp source_path, local_gem_path unless File.identical?(source_path, local_gem_path) rescue Errno::EACCES local_gem_path = source_uri.to_s end say "Using local gem #{local_gem_path}" if Gem.configuration.really_verbose else raise ArgumentError, "unsupported URI scheme #{source_uri.scheme}" end local_gem_path end |
#download_to_cache(dependency) ⇒ Object
Given a name and requirement, downloads this gem into cache and returns the filename. Returns nil if the gem cannot be located. – Should probably be integrated with #download below, but that will be a larger, more emcompassing effort. -erikh
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# File 'lib/rubygems/remote_fetcher.rb', line 104 def download_to_cache dependency found, _ = Gem::SpecFetcher.fetcher.spec_for_dependency dependency return if found.empty? spec, source = found.max_by { |(s,_)| s.version } download spec, source.uri.to_s end |
#fetch_file(uri, *_) ⇒ Object
File Fetcher. Dispatched by fetch_path
. Use it instead.
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# File 'lib/rubygems/remote_fetcher.rb', line 214 def fetch_file uri, *_ Gem.read_binary correct_for_windows_path uri.path end |
#fetch_http(uri, last_modified = nil, head = false, depth = 0) ⇒ Object Also known as: fetch_https
HTTP Fetcher. Dispatched by fetch_path
. Use it instead.
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# File 'lib/rubygems/remote_fetcher.rb', line 221 def fetch_http uri, last_modified = nil, head = false, depth = 0 fetch_type = head ? Net::HTTP::Head : Net::HTTP::Get response = request uri, fetch_type, last_modified case response when Net::HTTPOK, Net::HTTPNotModified then head ? response : response.body when Net::HTTPMovedPermanently, Net::HTTPFound, Net::HTTPSeeOther, Net::HTTPTemporaryRedirect then raise FetchError.new('too many redirects', uri) if depth > 10 location = URI.parse response['Location'] if https?(uri) && !https?(location) raise FetchError.new("redirecting to non-https resource: #{location}", uri) end fetch_http(location, last_modified, head, depth + 1) else raise FetchError.new("bad response #{response.} #{response.code}", uri) end end |
#fetch_path(uri, mtime = nil, head = false) ⇒ Object
Downloads uri
and returns it as a String.
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# File 'lib/rubygems/remote_fetcher.rb', line 249 def fetch_path(uri, mtime = nil, head = false) uri = URI.parse uri unless URI::Generic === uri raise ArgumentError, "bad uri: #{uri}" unless uri unless uri.scheme raise ArgumentError, "uri scheme is invalid: #{uri.scheme.inspect}" end data = send "fetch_#{uri.scheme}", uri, mtime, head if data and !head and uri.to_s =~ /gz$/ begin data = Gem.gunzip data rescue Zlib::GzipFile::Error raise FetchError.new("server did not return a valid file", uri.to_s) end end data rescue FetchError raise rescue Timeout::Error raise UnknownHostError.new('timed out', uri.to_s) rescue IOError, SocketError, SystemCallError => e if e. =~ /getaddrinfo/ raise UnknownHostError.new('no such name', uri.to_s) else raise FetchError.new("#{e.class}: #{e}", uri.to_s) end end |
#fetch_size(uri) ⇒ Object
Returns the size of uri
in bytes.
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# File 'lib/rubygems/remote_fetcher.rb', line 307 def fetch_size(uri) # TODO: phase this out response = fetch_path(uri, nil, true) response['content-length'].to_i end |
#https?(uri) ⇒ Boolean
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# File 'lib/rubygems/remote_fetcher.rb', line 334 def https?(uri) uri.scheme.downcase == 'https' end |
#request(uri, request_class, last_modified = nil) ⇒ Object
Performs a Net::HTTP request of type request_class
on uri
returning a Net::HTTP response object. request maintains a table of persistent connections to reduce connect overhead.
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# File 'lib/rubygems/remote_fetcher.rb', line 326 def request(uri, request_class, last_modified = nil) request = Gem::Request.new uri, request_class, last_modified, @proxy request.fetch do |req| yield req if block_given? end end |