09e1499ed4
Juju 2.0 provides support for display of the version of an application deployed by a charm in juju status. Insert the application_version_set function into the existing assess_status function - this gets called after all hook executions, and periodically after that, so any changes in package versions due to normal system updates will also be reflected in the status output. This review also includes a resync of charm-helpers to pickup hookenv support for this feature. Change-Id: I2fb6fde9c7b1f02b7bc0925da115314fe2e959a0
73 lines
2.1 KiB
Python
73 lines
2.1 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright 2014-2015 Canonical Limited.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import re
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import subprocess
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from charmhelpers.osplatform import get_platform
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from charmhelpers.core.hookenv import (
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log,
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INFO
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)
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__platform__ = get_platform()
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if __platform__ == "ubuntu":
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from charmhelpers.core.kernel_factory.ubuntu import (
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persistent_modprobe,
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update_initramfs,
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) # flake8: noqa -- ignore F401 for this import
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elif __platform__ == "centos":
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from charmhelpers.core.kernel_factory.centos import (
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persistent_modprobe,
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update_initramfs,
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) # flake8: noqa -- ignore F401 for this import
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__author__ = "Jorge Niedbalski <jorge.niedbalski@canonical.com>"
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def modprobe(module, persist=True):
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"""Load a kernel module and configure for auto-load on reboot."""
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cmd = ['modprobe', module]
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log('Loading kernel module %s' % module, level=INFO)
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subprocess.check_call(cmd)
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if persist:
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persistent_modprobe(module)
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def rmmod(module, force=False):
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"""Remove a module from the linux kernel"""
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cmd = ['rmmod']
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if force:
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cmd.append('-f')
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cmd.append(module)
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log('Removing kernel module %s' % module, level=INFO)
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return subprocess.check_call(cmd)
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def lsmod():
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"""Shows what kernel modules are currently loaded"""
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return subprocess.check_output(['lsmod'],
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universal_newlines=True)
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def is_module_loaded(module):
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"""Checks if a kernel module is already loaded"""
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matches = re.findall('^%s[ ]+' % module, lsmod(), re.M)
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return len(matches) > 0
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