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# -*- coding: utf-8 -*-
from __future__ import absolute_import
from hostinfo import prefix
def _get_full_key(prev_key, key):
if prev_key == '':
return key
return "%s.%s" % (prev_key, key)
def _sort_with_list(iterable, sort):
def helper(value):
if sort is None:
return value
(key, _) = value
if key in sort:
return sort.index(key)
return "%d %s" % (len(sort), key)
return sorted(iterable, key=helper)
def _space(filter_key, full_key, printer, force=False):
if filter_key is None and full_key == '':
printer.space(force)
def _group_by(value, group, display_check, print_value):
groups = {}
for elem in value:
key = group(elem)
if key is not None and display_check(key):
groups.setdefault(key, []).append(print_value(elem))
return groups
class Printer:
labels = {
'hostname': 'Hostname',
'arch': 'Architecture',
'os': 'Operating System',
'addresses': 'IPs',
'ports': 'Ports',
'vserver': 'VServer',
'services': 'Services',
'maintainers': 'Maintainers',
'description': 'Description'
}
ignore = ['vserver_host', 'groups']
def __init__(self, data, flags):
self.data = data
self.flags = flags
prefix.Printer.flags = flags
def cb_print_addresses(self, value, full_key, filter_key):
def _group_ip(address):
if 'vserver' not in address:
return address['interface']
else:
return None
def _print_ip(address):
return '%s/%s' % (address['address'], address['netmask'])
display_check = self._is_group_displayed(full_key, filter_key)
return _group_by(value, _group_ip, display_check, _print_ip)
def cb_print_ports(self, value, full_key, filter_key):
def _group_port(port):
if 'process' in port:
return port['process']
else:
return 'UNKNOWN'
def _print_port(port):
if port['proto'] in ['tcp6', 'udp6']:
return '(%s) [%s]:%s' % (port['proto'].replace('6', ''),
port['ip'], port['port'])
return '(%s) %s:%s' % (port['proto'], port['ip'], port['port'])
display_check = self._is_group_displayed(full_key, filter_key)
return (_group_by(value, _group_port, display_check, _print_port),
['sshd', 'nrpe', 'munin-node'])
def cb_print_vserver(self, value, full_key, filter_key):
if value == 'guest' and 'vserver_host' in self.data and \
self.data['vserver_host'] is not None:
return 'guest running on %s' % self.data['vserver_host']
else:
return value
def _should_display(self, full_key, filter_key=None):
if full_key not in self.ignore:
return True
if filter_key is not None and filter_key.startswith(full_key):
return True
return False
def _is_group_displayed(self, prev_key, filter_key):
return (lambda key: self._should_display(_get_full_key(prev_key, key),
filter_key))
def _print(self, value, printer, filter_key=None, sort=None):
try:
value = value.strip().splitlines()
except AttributeError:
pass
if isinstance(value, dict):
self._print_dict(value, printer, filter_key, sort)
elif isinstance(value, list):
self._print_list(value, printer, filter_key)
elif value is None:
if self.flags.verbose:
printer.pprint('')
else:
self._print_value(value, printer, filter_key)
def _print_key(self, key, value, printer, filter_key):
sort = None
try:
method = getattr(self, 'cb_print_%s' % key.replace('.', '_'))
result = method(value, printer.full_key, filter_key)
if isinstance(result, tuple):
value, sort = result
else:
value = result
except AttributeError:
pass
self._print(value, printer, filter_key, sort)
def _print_value(self, value, printer, filter_key):
full_key = _get_full_key(printer.full_key, value)
if self._should_display(full_key, filter_key) and \
filter_key is None or full_key == filter_key:
printer.pprint(value)
def _print_list(self, values, printer, filter_key):
for value in values:
if isinstance(value, str):
self._print_value(value, printer, filter_key)
else:
self._print(value, printer, filter_key)
def _print_dict(self, value, printer, filter_key, sort):
keys = _sort_with_list(
[(key, full_key) for key in value.keys()
for full_key in [_get_full_key(printer.full_key, key)]
if self._should_display(full_key, filter_key)],
sort)
if len(keys) == 0:
return
maxlength = max([len(self._get_label(key, full_key)) \
for (key, full_key) in keys])
_space(filter_key, printer.full_key, printer, True)
for (key, full_key) in keys:
new_filter_key = None
if filter_key is not None:
if filter_key.startswith(full_key + '.'):
new_filter_key = filter_key
elif full_key != filter_key:
continue
new_printer = prefix.Printer(full_key, printer)
if filter_key is None:
new_printer.set_label(self._get_label(key, full_key), maxlength)
self._print_key(full_key, value[key], new_printer, new_filter_key)
_space(filter_key, printer.full_key, new_printer)
def _get_label(self, key, full_key):
if full_key in self.labels:
return self.labels[full_key]
return key
def info(self, key, label=None, maxlength=0):
printer = prefix.Printer()
if label is not None:
printer.set_label(label, maxlength)
self._print(self.data, printer, filter_key=key,
sort=['hostname', 'arch', 'os', 'addresses', 'ports'])
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