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installer.rb
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installer.rb
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require 'open-uri'
require 'pathname'
require 'fileutils'
require 'tmpdir'
require 'puppet/forge'
require 'puppet/module_tool'
require 'puppet/module_tool/shared_behaviors'
require 'puppet/module_tool/install_directory'
require 'puppet/module_tool/local_tarball'
require 'puppet/module_tool/installed_modules'
module Puppet::ModuleTool
module Applications
class Installer < Application
include Puppet::ModuleTool::Errors
include Puppet::Forge::Errors
def initialize(name, install_dir, options = {})
super(options)
@action = :install
@environment = options[:environment_instance]
@ignore_dependencies = forced? || options[:ignore_dependencies]
@name = name
@install_dir = install_dir
Puppet::Forge::Cache.clean
@local_tarball = Puppet::FileSystem.exist?(name)
if @local_tarball
release = local_tarball_source.release
@name = release.name
options[:version] = release.version.to_s
Semantic::Dependency.add_source(local_tarball_source)
# If we're operating on a local tarball and ignoring dependencies, we
# don't need to search any additional sources. This will cut down on
# unnecessary network traffic.
unless @ignore_dependencies
Semantic::Dependency.add_source(installed_modules_source)
Semantic::Dependency.add_source(module_repository)
end
else
Semantic::Dependency.add_source(installed_modules_source) unless forced?
Semantic::Dependency.add_source(module_repository)
end
end
def run
name = @name.tr('/', '-')
version = options[:version] || '>= 0.0.0'
results = { :action => :install, :module_name => name, :module_version => version }
begin
if installed_module = installed_modules[name]
unless forced?
if Semantic::VersionRange.parse(version).include? installed_module.version
results[:result] = :noop
results[:version] = installed_module.version
return results
else
changes = Checksummer.run(installed_modules[name].mod.path) rescue []
raise AlreadyInstalledError,
:module_name => name,
:installed_version => installed_modules[name].version,
:requested_version => options[:version] || :latest,
:local_changes => changes
end
end
end
@install_dir.prepare(name, options[:version] || 'latest')
results[:install_dir] = @install_dir.target
unless @local_tarball && @ignore_dependencies
Puppet.notice "Downloading from #{module_repository.host} ..."
end
if @ignore_dependencies
graph = build_single_module_graph(name, version)
else
graph = build_dependency_graph(name, version)
end
unless forced?
add_module_name_constraints_to_graph(graph)
end
installed_modules.each do |mod, release|
mod = mod.tr('/', '-')
next if mod == name
version = release.version
unless forced?
# Since upgrading already installed modules can be troublesome,
# we'll place constraints on the graph for each installed module,
# locking it to upgrades within the same major version.
installed_range = ">=#{version} #{version.major}.x"
graph.add_constraint('installed', mod, installed_range) do |node|
Semantic::VersionRange.parse(installed_range).include? node.version
end
release.mod.dependencies.each do |dep|
dep_name = dep['name'].tr('/', '-')
range = dep['version_requirement']
graph.add_constraint("#{mod} constraint", dep_name, range) do |node|
Semantic::VersionRange.parse(range).include? node.version
end
end
end
end
# Ensure that there is at least one candidate release available
# for the target package.
if graph.dependencies[name].empty?
raise NoCandidateReleasesError, results.merge(:module_name => name, :source => module_repository.host, :requested_version => options[:version] || :latest)
end
begin
Puppet.info "Resolving dependencies ..."
releases = Semantic::Dependency.resolve(graph)
rescue Semantic::Dependency::UnsatisfiableGraph
raise NoVersionsSatisfyError, results.merge(:requested_name => name)
end
unless forced?
# Check for module name conflicts.
releases.each do |rel|
if installed_module = installed_modules_source.by_name[rel.name.split('-').last]
next if installed_module.has_metadata? && installed_module.forge_name.tr('/', '-') == rel.name
if rel.name != name
dependency = {
:name => rel.name,
:version => rel.version
}
end
raise InstallConflictError,
:requested_module => name,
:requested_version => options[:version] || 'latest',
:dependency => dependency,
:directory => installed_module.path,
:metadata => installed_module.metadata
end
end
end
Puppet.info "Preparing to install ..."
releases.each { |release| release.prepare }
Puppet.notice 'Installing -- do not interrupt ...'
releases.each do |release|
installed = installed_modules[release.name]
if forced? || installed.nil?
release.install(Pathname.new(results[:install_dir]))
else
release.install(Pathname.new(installed.mod.modulepath))
end
end
results[:result] = :success
results[:installed_modules] = releases
results[:graph] = [ build_install_graph(releases.first, releases) ]
rescue ModuleToolError, ForgeError => err
results[:error] = {
:oneline => err.message,
:multiline => err.multiline,
}
ensure
results[:result] ||= :failure
end
results
end
private
def module_repository
@repo ||= Puppet::Forge.new
end
def local_tarball_source
@tarball_source ||= begin
Puppet::ModuleTool::LocalTarball.new(@name)
rescue Puppet::Module::Error => e
raise InvalidModuleError.new(@name, :action => @action, :error => e)
end
end
def installed_modules_source
@installed ||= Puppet::ModuleTool::InstalledModules.new(@environment)
end
def installed_modules
installed_modules_source.modules
end
def build_single_module_graph(name, version)
range = Semantic::VersionRange.parse(version)
graph = Semantic::Dependency::Graph.new(name => range)
releases = Semantic::Dependency.fetch_releases(name)
releases.each { |release| release.dependencies.clear }
graph << releases
end
def build_dependency_graph(name, version)
Semantic::Dependency.query(name => version)
end
def build_install_graph(release, installed, graphed = [])
graphed << release
dependencies = release.dependencies.values.map do |deps|
dep = (deps & installed).first
unless dep.nil? || graphed.include?(dep)
build_install_graph(dep, installed, graphed)
end
end
previous = installed_modules[release.name]
previous = previous.version if previous
return {
:release => release,
:name => release.name,
:path => release.install_dir.to_s,
:dependencies => dependencies.compact,
:version => release.version,
:previous_version => previous,
:action => (previous.nil? || previous == release.version || forced? ? :install : :upgrade),
}
end
include Puppet::ModuleTool::Shared
# Return a Pathname object representing the path to the module
# release package in the `Puppet.settings[:module_working_dir]`.
def get_release_packages
get_local_constraints
if !forced? && @installed.include?(@module_name)
raise AlreadyInstalledError,
:module_name => @module_name,
:installed_version => @installed[@module_name].first.version,
:requested_version => @version || (@conditions[@module_name].empty? ? :latest : :best),
:local_changes => Puppet::ModuleTool::Applications::Checksummer.run(@installed[@module_name].first.path)
end
if @ignore_dependencies && @source == :filesystem
@urls = {}
@remote = { "#{@module_name}@#{@version}" => { } }
@versions = {
@module_name => [
{ :vstring => @version, :semver => SemVer.new(@version) }
]
}
else
get_remote_constraints(@forge)
end
@graph = resolve_constraints({ @module_name => @version })
@graph.first[:tarball] = @filename if @source == :filesystem
resolve_install_conflicts(@graph) unless forced?
# This clean call means we never "cache" the module we're installing, but this
# is desired since module authors can easily rerelease modules different content but the same
# version number, meaning someone with the old content cached will be very confused as to why
# they can't get new content.
# Long term we should just get rid of this caching behavior and cleanup downloaded modules after they install
# but for now this is a quick fix to disable caching
Puppet::Forge::Cache.clean
download_tarballs(@graph, @graph.last[:path], @forge)
end
#
# Resolve installation conflicts by checking if the requested module
# or one of its dependencies conflicts with an installed module.
#
# Conflicts occur under the following conditions:
#
# When installing 'puppetlabs-foo' and an existing directory in the
# target install path contains a 'foo' directory and we cannot determine
# the "full name" of the installed module.
#
# When installing 'puppetlabs-foo' and 'pete-foo' is already installed.
# This is considered a conflict because 'puppetlabs-foo' and 'pete-foo'
# install into the same directory 'foo'.
#
def resolve_install_conflicts(graph, is_dependency = false)
Puppet.debug("Resolving conflicts for #{graph.map {|n| n[:module]}.join(',')}")
graph.each do |release|
@environment.modules_by_path[options[:target_dir]].each do |mod|
if mod.has_metadata?
metadata = {
:name => mod.forge_name.gsub('/', '-'),
:version => mod.version
}
next if release[:module] == metadata[:name]
else
metadata = nil
end
if release[:module] =~ /-#{mod.name}$/
dependency_info = {
:name => release[:module],
:version => release[:version][:vstring]
}
dependency = is_dependency ? dependency_info : nil
all_versions = @versions["#{@module_name}"].sort_by { |h| h[:semver] }
versions = all_versions.select { |x| x[:semver].special == '' }
versions = all_versions if versions.empty?
latest_version = versions.last[:vstring]
raise InstallConflictError,
:requested_module => @module_name,
:requested_version => @version || "latest: v#{latest_version}",
:dependency => dependency,
:directory => mod.path,
:metadata => metadata
end
end
deps = release[:dependencies]
if deps && !deps.empty?
resolve_install_conflicts(deps, true)
end
end
end
#
# Check if a file is a vaild module package.
# ---
# FIXME: Checking for a valid module package should be more robust and
# use the actual metadata contained in the package. 03132012 - Hightower
# +++
#
def is_module_package?(name)
filename = File.expand_path(name)
filename =~ /.tar.gz$/
end
end
end
end