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Class: Gem::Resolver::APISet

Relationships & Source Files
Namespace Children
Classes:
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Set
Instance Chain:
self, Set
Inherits: Gem::Resolver::Set
Defined in: lib/rubygems/resolver/api_set.rb

Overview

The global rubygems pool, available via the rubygems.org API. Returns instances of APISpecification.

Class Method Summary

Set - Inherited

Instance Attribute Summary

  • #source readonly

    The ::Gem::Source that gems are fetched from.

  • #uri readonly

    The corresponding place to fetch gems.

  • #dep_uri readonly Internal use only

    The URI for the dependency API this APISet uses.

Set - Inherited

#errors

Errors encountered when resolving gems.

#prerelease

When true, allows matching of requests to prerelease gems.

#remote

Set to true to disable network access for this set.

#remote?

When true, this set is allowed to access the network when looking up specifications or dependencies.

Instance Method Summary

Set - Inherited

#find_all

The find_all method must be implemented.

#prefetch

The #prefetch method may be overridden, but this is not necessary.

Constructor Details

.new(dep_uri = "https://index.rubygems.org/info/") ⇒ APISet

Creates a new APISet that will retrieve gems from #uri using the RubyGems API URL #dep_uri which is described at guides.rubygems.org/rubygems-org-api

[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 29

def initialize(dep_uri = "https://index.rubygems.org/info/")
  super()

  dep_uri = URI dep_uri unless URI === dep_uri

  @dep_uri = dep_uri
  @uri     = dep_uri + ".."

  @data   = Hash.new {|h,k| h[k] = [] }
  @source = Gem::Source.new @uri

  @to_fetch = []
end

Instance Attribute Details

#dep_uri (readonly)

This method is for internal use only.

The URI for the dependency API this APISet uses.

[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 12

attr_reader :dep_uri # :nodoc:

#source (readonly)

The ::Gem::Source that gems are fetched from

[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 17

attr_reader :source

#uri (readonly)

The corresponding place to fetch gems.

[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 22

attr_reader :uri

Instance Method Details

#find_all(req)

Return an array of APISpecification objects matching DependencyRequest req.

[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 47

def find_all(req)
  res = []

  return res unless @remote

  if @to_fetch.include?(req.name)
    prefetch_now
  end

  versions(req.name).each do |ver|
    if req.dependency.match? req.name, ver[:number], @prerelease
      res << Gem::Resolver::APISpecification.new(self, ver)
    end
  end

  res
end

#lines(str) (private)

[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 122

def lines(str)
  lines = str.split("\n")
  header = lines.index("---")
  header ? lines[header + 1..-1] : lines
end

#parse_gem(string) (private)

[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 128

def parse_gem(string)
  @gem_parser ||= GemParser.new
  @gem_parser.parse(string)
end

#prefetch(reqs)

A hint run by the resolver to allow the Set to fetch data for DependencyRequests reqs.

[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 69

def prefetch(reqs)
  return unless @remote
  names = reqs.map {|r| r.dependency.name }
  needed = names - @data.keys - @to_fetch

  @to_fetch += needed
end

#prefetch_now

This method is for internal use only.
[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 77

def prefetch_now # :nodoc:
  needed, @to_fetch = @to_fetch, []

  needed.sort.each do |name|
    versions(name)
  end
end

#pretty_print(q)

This method is for internal use only.
[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 85

def pretty_print(q) # :nodoc:
  q.group 2, "[APISet", "]" do
    q.breakable
    q.text "URI: #{@dep_uri}"

    q.breakable
    q.text "gem names:"
    q.pp @data.keys
  end
end

#versions(name)

This method is for internal use only.

Return data for all versions of the gem name.

[ GitHub ]

  
# File 'lib/rubygems/resolver/api_set.rb', line 99

def versions(name) # :nodoc:
  if @data.key?(name)
    return @data[name]
  end

  uri = @dep_uri + name
  str = Gem::RemoteFetcher.fetcher.fetch_path uri

  lines(str).each do |ver|
    number, platform, dependencies, requirements = parse_gem(ver)

    platform ||= "ruby"
    dependencies = dependencies.map {|dep_name, reqs| [dep_name, reqs.join(", ")] }
    requirements = requirements.map {|req_name, reqs| [req_name.to_sym, reqs] }.to_h

    @data[name] << { name: name, number: number, platform: platform, dependencies: dependencies, requirements: requirements }
  end

  @data[name]
end