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# -*- coding: utf-8 -*- |
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__author__ = 'Kenny Freeman' |
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__email__ = '[email protected]' |
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__license__ = "ISCL" |
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__docformat__ = 'reStructuredText' |
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import re |
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import os |
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import sys |
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PY3 = sys.version_info > (3,) |
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import plumd |
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import plumd.plugins |
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from plumd.util import get_file_list |
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class DiskSpace(plumd.plugins.Reader): |
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"""Plugin to measure disk usage.""" |
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# default config values |
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defaults = { |
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'poll.interval': 60, |
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'fs_types': ['xfs', 'ext2', 'ext3', 'ext4'], |
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'mnt_exclude_re': "^\/mnt\/.*", |
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'chrs_keep': 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-' |
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} |
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def __init__(self, log, config): |
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"""Plugin to measure disk usage. |
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:param log: A logger |
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:type log: logging.RootLogger |
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:param config: a plumd.config.Conf configuration helper instance. |
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:type config: plumd.config.Conf |
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""" |
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super(DiskSpace, self).__init__(log, config) |
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self.config.defaults(DiskSpace.defaults) |
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# skip mounts for devices matching this re |
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self.mnt_re = re.compile(config.get('mnt_exclude_re')) |
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# characters to remove from device names |
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self.filter_chars = "".join(char for char in map(chr, range(256)) \ |
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if char not in self.config.get('chrs_keep')) |
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# args for str.translate() calls |
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self.tlate_args = [None, self.filter_chars] |
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if PY3: |
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self.tlate_args = [dict.fromkeys(map(ord, self.filter_chars)), None] |
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# get a list of mount points - only on init |
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self.mounts = self.proc_mounts() |
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def proc_mounts(self): |
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fs_types = self.config.get('fs_types') |
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ret = [] |
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mounts = get_file_list("/proc/mounts") |
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filter_chars = self.filter_chars |
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mnt_re = self.mnt_re |
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tlate_args = self.tlate_args |
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for entry in mounts: |
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dev, path, fs, opts, d1, d2 = entry.split() |
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if mnt_re.match(dev) or fs not in fs_types: |
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continue |
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dev = re.sub("^/dev/", "", dev) |
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dev = dev.translate(*tlate_args) |
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ret.append((dev, path)) |
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return ret |
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def poll(self): |
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"""Poll for disk space usage. |
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:rtype: ResultSet |
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""" |
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result = plumd.Result("diskusage") |
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for dev, mpoint in self.mounts: |
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mp_stat = os.statvfs(mpoint) |
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free = (mp_stat.f_bavail * mp_stat.f_frsize) |
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total = (mp_stat.f_blocks * mp_stat.f_frsize) |
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used = (mp_stat.f_blocks - mp_stat.f_bfree) * mp_stat.f_frsize |
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total_inodes = mp_stat.f_files |
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free_inodes = mp_stat.f_favail |
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used_inodes = total_inodes - free_inodes |
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result.add(plumd.Int("{0}.free".format(dev), free)) |
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result.add(plumd.Int("{0}.total".format(dev), total)) |
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result.add(plumd.Int("{0}.used".format(dev), used)) |
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result.add(plumd.Int("{0}.total_inodes".format(dev), total_inodes)) |
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result.add(plumd.Int("{0}.free_inodes".format(dev), free_inodes)) |
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result.add(plumd.Int("{0}.used_inodes".format(dev), used_inodes)) |
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return plumd.ResultSet([result]) |
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s4z /
plumd
