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|
require "digest/sha1"
module Bundler
class Definition
include GemHelpers
attr_reader :dependencies, :platforms, :sources
def self.build(gemfile, lockfile, unlock)
unlock ||= {}
gemfile = Pathname.new(gemfile).expand_path
unless gemfile.file?
raise GemfileNotFound, "#{gemfile} not found"
end
Dsl.evaluate(gemfile, 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
@remote = false
@specs = nil
@lockfile_contents = ""
if lockfile && File.exists?(lockfile)
@lockfile_contents = Bundler.read_file(lockfile)
locked = LockfileParser.new(@lockfile_contents)
@platforms = locked.platforms
if unlock != true
@locked_deps = locked.dependencies
@locked_specs = SpecSet.new(locked.specs)
@locked_sources = locked.sources
else
@unlock = {}
@locked_deps = []
@locked_specs = SpecSet.new([])
@locked_sources = []
end
else
@unlock = {}
@platforms = []
@locked_deps = []
@locked_specs = SpecSet.new([])
@locked_sources = []
end
@unlock[:gems] ||= []
@unlock[:sources] ||= []
current_platform = Bundler.rubygems.platforms.map { |p| generic(p) }.compact.last
@new_platform = !@platforms.include?(current_platform)
@platforms |= [current_platform]
eager_unlock = expand_dependencies(@unlock[:gems])
@unlock[:gems] = @locked_specs.for(eager_unlock).map { |s| s.name }
converge_sources
converge_dependencies
end
def resolve_with_cache!
raise "Specs already loaded" if @specs
@sources.each { |s| s.cached! }
specs
end
def resolve_remotely!
raise "Specs already loaded" if @specs
@remote = true
@sources.each { |s| s.remote! }
specs
end
def specs
@specs ||= begin
specs = resolve.materialize(requested_dependencies)
unless specs["bundler"].any?
local = Bundler.settings[:frozen] ? rubygems_index : index
bundler = local.search(Gem::Dependency.new('bundler', VERSION)).last
specs["bundler"] = bundler if bundler
end
specs
end
end
def new_specs
specs - @locked_specs
end
def removed_specs
@locked_specs - specs
end
def new_platform?
@new_platform
end
def missing_specs
missing = []
resolve.materialize(requested_dependencies, missing)
missing
end
def requested_specs
@requested_specs ||= begin
groups = self.groups - Bundler.settings.without
groups.map! { |g| g.to_sym }
specs_for(groups)
end
end
def current_dependencies
dependencies.reject { |d| !d.should_include? }
end
def specs_for(groups)
deps = dependencies.select { |d| (d.groups & groups).any? }
deps.delete_if { |d| !d.should_include? }
specs.for(expand_dependencies(deps))
end
def resolve
@resolve ||= begin
if Bundler.settings[:frozen]
@locked_specs
else
last_resolve = converge_locked_specs
# Record the specs available in each gem's source, so that those
# specs will be available later when the resolver knows where to
# look for that gemspec (or its dependencies)
source_requirements = {}
dependencies.each do |dep|
next unless dep.source
source_requirements[dep.name] = dep.source.specs
end
# Run a resolve against the locally available gems
last_resolve.merge Resolver.resolve(expanded_dependencies, index, source_requirements, last_resolve)
end
end
end
def index
@index ||= Index.build do |idx|
@sources.each do |s|
idx.add_source s.specs
end
end
end
# used when frozen is enabled so we can find the bundler
# spec, even if (say) a git gem is not checked out.
def rubygems_index
@rubygems_index ||= Index.build do |idx|
rubygems = @sources.find{|s| s.is_a?(Source::Rubygems) }
idx.add_source(rubygems)
end
end
def no_sources?
@sources.length == 1 && @sources.first.remotes.empty?
end
def groups
dependencies.map { |d| d.groups }.flatten.uniq
end
def lock(file)
contents = to_lock
return if @lockfile_contents == contents
if Bundler.settings[:frozen]
# TODO: Warn here if we got here.
return
end
# Convert to \r\n if the existing lock has them
# i.e., Windows with `git config core.autocrlf=true`
contents.gsub!(/\n/, "\r\n") if @lockfile_contents.match("\r\n")
File.open(file, 'wb'){|f| f.puts(contents) }
end
def to_lock
out = ""
sorted_sources.each do |source|
# Add the source header
out << source.to_lock
# Find all specs for this source
resolve.
select { |s| s.source == source }.
# This needs to be sorted by full name so that
# gems with the same name, but different platform
# are ordered consistantly
sort_by { |s| s.full_name }.
each do |spec|
next if spec.name == 'bundler'
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"
handled = []
dependencies.
sort_by { |d| d.to_s }.
each do |dep|
next if handled.include?(dep.name)
out << dep.to_lock
handled << dep.name
end
out
end
def ensure_equivalent_gemfile_and_lockfile(explicit_flag = false)
changes = false
msg = "You are trying to install in deployment mode after changing\n" \
"your Gemfile. Run `bundle install` elsewhere and add the\n" \
"updated Gemfile.lock to version control."
unless explicit_flag
msg += "\n\nIf this is a development machine, remove the Gemfile " \
"freeze \nby running `bundle install --no-deployment`."
end
added = []
deleted = []
changed = []
if @locked_sources != @sources
new_sources = @sources - @locked_sources
deleted_sources = @locked_sources - @sources
if new_sources.any?
added.concat new_sources.map { |source| "* source: #{source}" }
end
if deleted_sources.any?
deleted.concat deleted_sources.map { |source| "* source: #{source}" }
end
changes = true
end
both_sources = Hash.new { |h,k| h[k] = ["no specified source", "no specified source"] }
@dependencies.each { |d| both_sources[d.name][0] = d.source if d.source }
@locked_deps.each { |d| both_sources[d.name][1] = d.source if d.source }
both_sources.delete_if { |k,v| v[0] == v[1] }
if @dependencies != @locked_deps
new_deps = @dependencies - @locked_deps
deleted_deps = @locked_deps - @dependencies
if new_deps.any?
added.concat new_deps.map { |d| "* #{pretty_dep(d)}" }
end
if deleted_deps.any?
deleted.concat deleted_deps.map { |d| "* #{pretty_dep(d)}" }
end
both_sources.each do |name, sources|
changed << "* #{name} from `#{sources[0]}` to `#{sources[1]}`"
end
changes = true
end
msg << "\n\nYou have added to the Gemfile:\n" << added.join("\n") if added.any?
msg << "\n\nYou have deleted from the Gemfile:\n" << deleted.join("\n") if deleted.any?
msg << "\n\nYou have changed in the Gemfile:\n" << changed.join("\n") if changed.any?
msg << "\n"
raise ProductionError, msg if added.any? || deleted.any? || changed.any?
end
private
def pretty_dep(dep, source = false)
msg = "#{dep.name}"
msg << " (#{dep.requirement})" unless dep.requirement == Gem::Requirement.default
msg << " from the `#{dep.source}` source" if source && dep.source
msg
end
def converge_sources
locked_gem = @locked_sources.find { |s| Source::Rubygems === s }
actual_gem = @sources.find { |s| Source::Rubygems === s }
if locked_gem && actual_gem
locked_gem.merge_remotes actual_gem
end
@sources.map! do |source|
@locked_sources.find { |s| s == source } || source
end
@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
dep.source = @sources.find { |s| dep.source == s }
end
end
end
# Remove elements from the locked specs that are expired. This will most
# commonly happen if the Gemfile has changed since the lockfile was last
# generated
def converge_locked_specs
deps = []
# Build a list of dependencies that are the same in the Gemfile
# and Gemfile.lock. If the Gemfile modified a dependency, but
# the gem in the Gemfile.lock still satisfies it, this is fine
# too.
@dependencies.each do |dep|
locked_dep = @locked_deps.find { |d| dep == d }
if in_locked_deps?(dep, locked_dep) || satisfies_locked_spec?(dep)
deps << dep
elsif dep.source.is_a?(Source::Path) && dep.current_platform? && (!locked_dep || dep.source != locked_dep.source)
@locked_specs.each do |s|
@unlock[:gems] << s.name if s.source == dep.source
end
dep.source.unlock! if dep.source.respond_to?(:unlock!)
dep.source.specs.each { |s| @unlock[:gems] << s.name }
end
end
converged = []
@locked_specs.each do |s|
s.source = @sources.find { |src| s.source == src }
# Don't add a spec to the list if its source is expired. For example,
# if you change a Git gem to Rubygems.
next if s.source.nil? || @unlock[:sources].include?(s.name)
# If the spec is from a path source and it doesn't exist anymore
# then we just unlock it.
# Path sources have special logic
if s.source.instance_of?(Source::Path)
other = s.source.specs[s].first
# If the spec is no longer in the path source, unlock it. This
# commonly happens if the version changed in the gemspec
next unless other
deps2 = other.dependencies.select { |d| d.type != :development }
# If the dependencies of the path source have changed, unlock it
next unless s.dependencies.sort == deps2.sort
end
converged << s
end
resolve = SpecSet.new(converged)
resolve = resolve.for(expand_dependencies(deps, true), @unlock[:gems])
diff = @locked_specs.to_a - resolve.to_a
# Now, we unlock any sources that do not have anymore gems pinned to it
@sources.each do |source|
next unless source.respond_to?(:unlock!)
unless resolve.any? { |s| s.source == source }
source.unlock! if !diff.empty? && diff.any? { |s| s.source == source }
end
end
resolve
end
def in_locked_deps?(dep, d)
d && dep.source == d.source
end
def satisfies_locked_spec?(dep)
@locked_specs.any? { |s| s.satisfies?(dep) && (!dep.source || s.source == dep.source) }
end
def expanded_dependencies
@expanded_dependencies ||= expand_dependencies(dependencies, @remote)
end
def expand_dependencies(dependencies, remote = false)
deps = []
dependencies.each do |dep|
dep = Dependency.new(dep, ">= 0") unless dep.respond_to?(:name)
dep.gem_platforms(@platforms).each do |p|
deps << DepProxy.new(dep, p) if remote || p == generic(Gem::Platform.local)
end
end
deps
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 requested_dependencies
groups = self.groups - Bundler.settings.without
groups.map! { |g| g.to_sym }
dependencies.reject { |d| !d.should_include? || (d.groups & groups).empty? }
end
end
end
|