core: added option to prefix cache keys for usage in cluster.

rhodecode/config/utils.py

@@ -1,89 +1,94 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2018 RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # 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 Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 import os
 import shlex
 import platform
 
 from rhodecode.model import init_model
 
 
 def configure_vcs(config):
     """
     Patch VCS config with some RhodeCode specific stuff
     """
     from rhodecode.lib.vcs import conf
     import rhodecode.lib.vcs.conf.settings
 
     conf.settings.BACKENDS = {
         'hg': 'rhodecode.lib.vcs.backends.hg.MercurialRepository',
         'git': 'rhodecode.lib.vcs.backends.git.GitRepository',
         'svn': 'rhodecode.lib.vcs.backends.svn.SubversionRepository',
     }
 
     conf.settings.HOOKS_PROTOCOL = config['vcs.hooks.protocol']
     conf.settings.HOOKS_HOST = config['vcs.hooks.host']
     conf.settings.HOOKS_DIRECT_CALLS = config['vcs.hooks.direct_calls']
     conf.settings.GIT_REV_FILTER = shlex.split(config['git_rev_filter'])
     conf.settings.DEFAULT_ENCODINGS = config['default_encoding']
     conf.settings.ALIASES[:] = config['vcs.backends']
     conf.settings.SVN_COMPATIBLE_VERSION = config['vcs.svn.compatible_version']
 
 
 def initialize_database(config):
     from rhodecode.lib.utils2 import engine_from_config, get_encryption_key
     engine = engine_from_config(config, 'sqlalchemy.db1.')
     init_model(engine, encryption_key=get_encryption_key(config))
 
 
 def initialize_test_environment(settings, test_env=None):
     if test_env is None:
         test_env = not int(os.environ.get('RC_NO_TMP_PATH', 0))
 
     from rhodecode.lib.utils import (
         create_test_directory, create_test_database, create_test_repositories,
         create_test_index)
     from rhodecode.tests import TESTS_TMP_PATH
     from rhodecode.lib.vcs.backends.hg import largefiles_store
     from rhodecode.lib.vcs.backends.git import lfs_store
 
     # test repos
     if test_env:
         create_test_directory(TESTS_TMP_PATH)
         # large object stores
         create_test_directory(largefiles_store(TESTS_TMP_PATH))
         create_test_directory(lfs_store(TESTS_TMP_PATH))
 
         create_test_database(TESTS_TMP_PATH, settings)
         create_test_repositories(TESTS_TMP_PATH, settings)
         create_test_index(TESTS_TMP_PATH, settings)
 
 
 def get_vcs_server_protocol(config):
     return config['vcs.server.protocol']
 
 
 def set_instance_id(config):
-    """ Sets a dynamic generated config['instance_id'] if missing or '*' """
+    """
+    Sets a dynamic generated config['instance_id'] if missing or '*'
+    E.g instance_id = *cluster-1 or instance_id = *
+    """
 
     config['instance_id'] = config.get('instance_id') or ''
-    if config['instance_id'] == '*' or not config['instance_id']:
+    instance_id = config['instance_id']
+    if instance_id.startswith('*') or not instance_id:
+        prefix = instance_id.lstrip('*')
         _platform_id = platform.uname()[1] or 'instance'
-        config['instance_id'] = '%s-%s' % (_platform_id, os.getpid())
+        config['instance_id'] = '%s%s-%s' % (prefix, _platform_id, os.getpid())