"""
WcProc1Mountinfo - Command ``/usr/bin/wc -l /proc/1/mountinfo``
===============================================================
Parser for parsing the output of command ``/usr/bin/wc -l /proc/1/mountinfo``.
"""
from insights.core import Parser
from insights.core.exceptions import ParseException, SkipComponent
from insights.core.plugins import parser
from insights.specs import Specs
[docs]
@parser(Specs.wc_proc_1_mountinfo)
class WcProc1Mountinfo(Parser):
"""
Provides the line counts of file ``/proc/1/mountinfo`` by parsing the
output of command ``/usr/bin/wc -l /proc/1/mountinfo``.
Attributes:
line_count(int): the line counts of file ``/proc/1/mountinfo``
Typical content looks like::
37 /proc/1/mountinfo
Examples:
>>> type(wc_info)
<class 'insights.parsers.wc_proc_1_mountinfo.WcProc1Mountinfo'>
>>> wc_info.line_count
37
Raises:
SkipComponent: if the command output is empty or missing file
ParseException: if the command output is unparsable
"""
[docs]
def parse_content(self, content):
if len(content) == 0 or 'No such file or directory' in content[0]:
raise SkipComponent("Error: ", content[0] if content else 'empty file')
count_str = content[0].split()[0]
if not count_str.isdigit():
raise ParseException("Error: unparsable output from command wc: ", content[0])
self.line_count = int(count_str)