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#
# Author:: Daniel DeLeo (<dan@kallistec.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#TODO subversion and git should both extend from a base SCM provider.
require "chef/log"
require "chef/provider"
require "chef/mixin/command"
require "fileutils"
class Chef
class Provider
class Subversion < Chef::Provider
provides :subversion
SVN_INFO_PATTERN = /^([\w\s]+): (.+)$/
include Chef::Mixin::Command
def whyrun_supported?
true
end
def load_current_resource
@current_resource = Chef::Resource::Subversion.new(@new_resource.name)
unless [:export, :force_export].include?(Array(@new_resource.action).first)
if current_revision = find_current_revision
@current_resource.revision current_revision
end
end
end
def define_resource_requirements
requirements.assert(:all_actions) do |a|
# Make sure the parent dir exists, or else fail.
# for why run, print a message explaining the potential error.
parent_directory = ::File.dirname(@new_resource.destination)
a.assertion { ::File.directory?(parent_directory) }
a.failure_message(Chef::Exceptions::MissingParentDirectory,
"Cannot clone #{@new_resource} to #{@new_resource.destination}, the enclosing directory #{parent_directory} does not exist")
a.whyrun("Directory #{parent_directory} does not exist, assuming it would have been created")
end
end
def action_checkout
if target_dir_non_existent_or_empty?
converge_by("perform checkout of #{@new_resource.repository} into #{@new_resource.destination}") do
shell_out!(checkout_command, run_options)
end
else
Chef::Log.debug "#{@new_resource} checkout destination #{@new_resource.destination} already exists or is a non-empty directory - nothing to do"
end
end
def action_export
if target_dir_non_existent_or_empty?
action_force_export
else
Chef::Log.debug "#{@new_resource} export destination #{@new_resource.destination} already exists or is a non-empty directory - nothing to do"
end
end
def action_force_export
converge_by("export #{@new_resource.repository} into #{@new_resource.destination}") do
shell_out!(export_command, run_options)
end
end
def action_sync
assert_target_directory_valid!
if ::File.exist?(::File.join(@new_resource.destination, ".svn"))
current_rev = find_current_revision
Chef::Log.debug "#{@new_resource} current revision: #{current_rev} target revision: #{revision_int}"
unless current_revision_matches_target_revision?
converge_by("sync #{@new_resource.destination} from #{@new_resource.repository}") do
shell_out!(sync_command, run_options)
Chef::Log.info "#{@new_resource} updated to revision: #{revision_int}"
end
end
else
action_checkout
end
end
def sync_command
c = scm :update, @new_resource.svn_arguments, verbose, authentication, "-r#{revision_int}", @new_resource.destination
Chef::Log.debug "#{@new_resource} updated working copy #{@new_resource.destination} to revision #{@new_resource.revision}"
c
end
def checkout_command
c = scm :checkout, @new_resource.svn_arguments, verbose, authentication,
"-r#{revision_int}", @new_resource.repository, @new_resource.destination
Chef::Log.info "#{@new_resource} checked out #{@new_resource.repository} at revision #{@new_resource.revision} to #{@new_resource.destination}"
c
end
def export_command
args = ["--force"]
args << @new_resource.svn_arguments << verbose << authentication <<
"-r#{revision_int}" << @new_resource.repository << @new_resource.destination
c = scm :export, *args
Chef::Log.info "#{@new_resource} exported #{@new_resource.repository} at revision #{@new_resource.revision} to #{@new_resource.destination}"
c
end
# If the specified revision isn't an integer ("HEAD" for example), look
# up the revision id by asking the server
# If the specified revision is an integer, trust it.
def revision_int
@revision_int ||= begin
if @new_resource.revision =~ /^\d+$/
@new_resource.revision
else
command = scm(:info, @new_resource.repository, @new_resource.svn_info_args, authentication, "-r#{@new_resource.revision}")
svn_info = shell_out!(command, run_options(:cwd => cwd, :returns => [0,1])).stdout
extract_revision_info(svn_info)
end
end
end
alias :revision_slug :revision_int
def find_current_revision
return nil unless ::File.exist?(::File.join(@new_resource.destination, ".svn"))
command = scm(:info)
svn_info = shell_out!(command, run_options(:cwd => cwd, :returns => [0,1])).stdout
extract_revision_info(svn_info)
end
def current_revision_matches_target_revision?
(!@current_resource.revision.nil?) && (revision_int.strip.to_i == @current_resource.revision.strip.to_i)
end
def run_options(run_opts={})
run_opts[:user] = @new_resource.user if @new_resource.user
run_opts[:group] = @new_resource.group if @new_resource.group
run_opts[:timeout] = @new_resource.timeout if @new_resource.timeout
run_opts
end
private
def cwd
@new_resource.destination
end
def verbose
"-q"
end
def extract_revision_info(svn_info)
repo_attrs = svn_info.lines.inject({}) do |attrs, line|
if line =~ SVN_INFO_PATTERN
property, value = $1, $2
attrs[property] = value
end
attrs
end
rev = (repo_attrs["Last Changed Rev"] || repo_attrs["Revision"])
rev.strip! if rev
raise "Could not parse `svn info` data: #{svn_info}" if repo_attrs.empty?
Chef::Log.debug "#{@new_resource} resolved revision #{@new_resource.revision} to #{rev}"
rev
end
# If a username is configured for the SCM, return the command-line
# switches for that. Note that we don't need to return the password
# switch, since Capistrano will check for that prompt in the output
# and will respond appropriately.
def authentication
return "" unless @new_resource.svn_username
result = "--username #{@new_resource.svn_username} "
result << "--password #{@new_resource.svn_password} "
result
end
def scm(*args)
binary = svn_binary
binary = "\"#{binary}\"" if binary =~ /\s/
[binary, *args].compact.join(" ")
end
def target_dir_non_existent_or_empty?
!::File.exist?(@new_resource.destination) || Dir.entries(@new_resource.destination).sort == [".",".."]
end
def svn_binary
@new_resource.svn_binary ||
(Chef::Platform.windows? ? "svn.exe" : "svn")
end
def assert_target_directory_valid!
target_parent_directory = ::File.dirname(@new_resource.destination)
unless ::File.directory?(target_parent_directory)
msg = "Cannot clone #{@new_resource} to #{@new_resource.destination}, the enclosing directory #{target_parent_directory} does not exist"
raise Chef::Exceptions::MissingParentDirectory, msg
end
end
end
end
end
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