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require "digest/sha1"
module Bundler
class Definition
attr_reader :dependencies, :platforms
def self.build(gemfile, lockfile, unlock)
unlock ||= {}
gemfile = Pathname.new(gemfile).expand_path
unless gemfile.file?
raise GemfileNotFound, "#{gemfile} not found"
end
# TODO: move this back into DSL
builder = Dsl.new
builder.instance_eval(File.read(gemfile.to_s), gemfile.to_s, 1)
builder.to_definition(lockfile, unlock)
end
=begin
How does the new system work?
===
* Load information from Gemfile and Lockfile
* Invalidate stale locked specs
* All specs from stale source are stale
* All specs that are reachable only through a stale
dependency are stale.
* If all fresh dependencies are satisfied by the locked
specs, then we can try to resolve locally.
=end
def initialize(lockfile, dependencies, sources, unlock)
@dependencies, @sources, @unlock = dependencies, sources, unlock
@specs = nil
@unlock[:gems] ||= []
@unlock[:sources] ||= []
if lockfile && File.exists?(lockfile)
locked = LockfileParser.new(File.read(lockfile))
@platforms = locked.platforms
@locked_deps = locked.dependencies
@last_resolve = SpecSet.new(locked.specs)
@locked_sources = locked.sources
else
@platforms = []
@locked_deps = []
@last_resolve = SpecSet.new([])
@locked_sources = []
end
current_platform = Gem.platforms.map { |p| p.to_generic }.compact.last
@platforms |= [current_platform]
@dependencies.each do |dependency|
dependency.platforms.replace @platforms
end
converge
end
def resolve_remotely!
raise "Specs already loaded" if @specs
@specs = resolve_remote_specs
end
def specs
@specs ||= resolve_local_specs
end
def last_resolve
resolve_local_specs unless @specs
@last_resolve
end
def index
@index ||= Index.build do |idx|
@sources.each do |s|
idx.use s.local_specs
end
end
end
def remote_index
@remote_index ||= Index.build do |idx|
@sources.each { |source| idx.use source.specs }
end
end
def no_sources?
@sources.length == 1 && @sources.first.remotes.empty?
end
def groups
dependencies.map { |d| d.groups }.flatten.uniq
end
def to_lock
out = ""
sorted_sources.each do |source|
# Add the source header
out << source.to_lock
# Find all specs for this source
last_resolve.
select { |s| s.source == source }.
sort_by { |s| s.name }.
each do |spec|
out << spec.to_lock
end
out << "\n"
end
out << "PLATFORMS\n"
platforms.map { |p| p.to_s }.sort.each do |p|
out << " #{p}\n"
end
out << "\n"
out << "DEPENDENCIES\n"
dependencies.
sort_by { |d| d.name }.
each do |dep|
out << dep.to_lock
end
out
end
private
def converge
converge_sources
converge_dependencies
converge_locked_specs
end
def converge_sources
@sources = (@locked_sources & @sources) | @sources
@sources.each do |source|
source.unlock! if source.respond_to?(:unlock!) && @unlock[:sources].include?(source.name)
end
end
def converge_dependencies
(@dependencies + @locked_deps).each do |dep|
if dep.source
source = @sources.find { |s| dep.source == s }
raise "Something went wrong, there is no matching source" unless source
dep.source = source
end
end
end
def converge_locked_specs
deps = []
@dependencies.each do |dep|
if in_locked_deps?(dep) || satisfies_locked_spec?(dep)
deps << dep
end
end
converged = []
@last_resolve.each do |s|
s.source = @sources.find { |src| s.source == src }
next if s.source.nil? || @unlock[:sources].include?(s.name)
converged << s
end
@last_resolve = SpecSet.new(converged).for(deps, @unlock[:gems])
end
def in_locked_deps?(dep)
@locked_deps.any? do |d|
dep == d && dep.source == d.source
end
end
def satisfies_locked_spec?(dep)
@last_resolve.any? { |s| s.satisfies?(dep) }
end
def sorted_sources
@sources.sort_by do |s|
# Place GEM at the top
[ s.is_a?(Source::Rubygems) ? 1 : 0, s.to_s ]
end
end
def resolve(type, idx)
source_requirements = {}
dependencies.each do |dep|
next unless dep.source
source_requirements[dep.name] = dep.source.send(type)
end
# Run a resolve against the locally available gems
resolve = Resolver.resolve(dependencies, idx, source_requirements, @last_resolve)
[resolve, resolve.materialize(type, dependencies)]
end
def resolve_local_specs
@last_resolve, @specs = resolve(:local_specs, index)
@specs
end
# TODO: Improve this logic
def resolve_remote_specs
raise "lol" unless @last_resolve.valid_for?(dependencies)
resolve_local_specs
rescue #InvalidSpecSet, GemNotFound, PathError
@last_resolve, @specs = resolve(:specs, remote_index)
@specs
end
end
end
|
