diff options
Diffstat (limited to 'migrations/004-install-files-overwrite-symlink.py')
-rwxr-xr-x | migrations/004-install-files-overwrite-symlink.py | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/migrations/004-install-files-overwrite-symlink.py b/migrations/004-install-files-overwrite-symlink.py new file mode 100755 index 00000000..6853dcb5 --- /dev/null +++ b/migrations/004-install-files-overwrite-symlink.py @@ -0,0 +1,59 @@ +#!/usr/bin/env python +# Copyright (C) 2015 Codethink Limited +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see <http://www.gnu.org/licenses/>. + +'''Migration to Baserock Definitions format version 4. + +This change to the format was made to work around a bug in a deployment +extension present in morph.git. + +Automated migration is not really possible for this change, and unless you +are experiencing the install-files.configure extension crashing, you can ignore +it completely. + +We have now moved all .configure and .write extensions into the definitions.git +repository. Changes like this no longer require a marking a new version of the +Baserock definitions format in order to prevent build tools crashing. + +Morph commit c373f5a403b0ec introduces version 4 of the definitions format. In +older versions of Morph the install-files.configure extension would crash if it +tried to overwrite a symlink. This bug is fixed in the version of Morph that +can build definitions version 4. + +If you need to overwrite a symlink at deploytime using install-files.configure, +please use VERSION to 4 or above in your definitions.git repo so older versions +of Morph gracefully refuse to deploy, instead of crashing. + +''' + + +import sys + +import migrations + + +TO_VERSION = 4 + + +try: + if migrations.check_definitions_version(TO_VERSION - 1): + migrations.set_definitions_version(TO_VERSION) + sys.stdout.write("Migration completed successfully.\n") + sys.exit(0) + else: + sys.stdout.write("Nothing to do.\n") + sys.exit(0) +except RuntimeError as e: + sys.stderr.write("Error: %s\n" % e.message) + sys.exit(1) |