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require 'tmpdir'
require 'digest/md5'
Puppet::Type.type(:vcsrepo).provide(:git) do
desc "Supports Git repositories"
commands :git => 'git'
def create
if !@resource.value(:source)
init_repository(@resource.value(:path))
else
clone_repository(@resource.value(:source), @resource.value(:path))
reset(@resource.value(:revision)) if @resource.value(:revision)
end
end
def exists?
case @resource.value(:ensure)
when 'present'
working_copy_exists?
when 'bare'
bare_exists?
else
path_exists?
end
end
def destroy
FileUtils.rm_rf(@resource.value(:path))
end
def revision
current = at_path { git('rev-parse', 'HEAD') }
canonical = at_path { git('rev-parse', @resource.value(:revision)) }
if current == canonical
@resource.value(:revision)
else
current
end
end
def revision=(desired)
fetch
reset(desired)
end
private
def bare_exists?
bare_git_config_exists? && !working_copy_exists?
end
def working_copy_exists?
File.directory?(File.join(@resource.value(:path), '.git'))
end
def path_exists?
File.directory?(@resource.value(:path))
end
def bare_git_config_exists?
File.exist?(File.join(@resource.value(:path), 'config'))
end
def clone_repository(source, path)
git('clone', source, path)
end
def fetch
at_path do
git('fetch', 'origin')
end
end
def init_repository(path)
if @resource.value(:ensure) == 'bare' && working_copy_exists?
convert_working_copy_to_bare
elsif @resource.value(:ensure) == 'present' && bare_exists?
convert_bare_to_working_copy
elsif File.directory?(@resource.value(:path))
raise Puppet::Error, "Could not create repository (non-repository at path)"
else
normal_init
end
end
# Convert working copy to bare
#
# Moves:
# <path>/.git
# to:
# <path>/
def convert_working_copy_to_bare
FileUtils.mv(File.join(@resource.value(:path), '.git'), tempdir)
FileUtils.rm_rf(@resource.value(:path))
FileUtils.cp_r(tempdir, @resource.value(:path))
end
# Convert bare to working copy
#
# Moves:
# <path>/
# to:
# <path>/.git
def convert_bare_to_working_copy
FileUtils.mv(@resource.value(:path), tempdir)
FileUtils.mkdir(@resource.value(:path))
FileUtils.cp_r(tempdir, File.join(@resource.value(:path), '.git'))
reset('HEAD')
git('checkout', '-f')
end
def normal_init
FileUtils.mkdir(@resource.value(:path))
args = ['init']
if @resource.value(:ensure) == 'bare'
args << '--bare'
end
at_path do
git(*args)
end
end
def reset(desired)
at_path do
git('reset', '--hard', desired)
end
end
# Note: We don't rely on Dir.chdir's behavior of automatically returning the
# value of the last statement -- for easier stubbing.
def at_path(&block) #:nodoc:
value = nil
Dir.chdir(@resource.value(:path)) do
value = yield
end
value
end
def tempdir
@tempdir ||= File.join(Dir.tmpdir, 'vcsrepo-' + Digest::MD5.hexdigest(@resource.value(:path)))
end
end
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