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structures.py
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structures.py
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import ipaddress
import logging
from pyparsing import basestring
from enums import *
class GlobalConfig(object):
"""
This contains the general configuration options that apply to all virtual servers and the whole process.
"""
def __init__(self, autoreload=False, callback=None, logfile="/var/log/pydirectord.log", smtp=None,
supervised=False, maintenancedir=None, configfile="/etc/pydirectord/pydirectord.conf"):
if isinstance(autoreload, bool):
self.autoreload = autoreload
else:
raise ValueError
if isinstance(logfile, basestring):
self.logfile = logfile
else:
raise ValueError
if isinstance(supervised, bool):
self.supervised = supervised
else:
raise ValueError
if isinstance(configfile, basestring):
self.configfile = configfile
else:
raise ValueError
# program information
self.version = None
# variable initialization
self.log = None
self.log_level = logging.INFO
self.checks = dict()
self.initial_action = None
self.last_modified = 0
self.terminated = False
# restart capabilities
self.action_on_stop = None
self.new_global_config = None
self.new_virtuals = None
class __Virtual(object):
"""
Base-class for virtual server configuration.
"""
def __init__(self, port, description=None, checktimeout=5, negotiatetimeout=30, checkinterval=10,
failurecount=1, checktype=Checktype.negotiate, cleanstop=True, emailalert=None, emailalertfrom=None,
emailalertfreq=0, emailalertstatus=ServerStatus.all, fallbackcommand=None,
quiescent=True, readdquiescent=True, service=None, checkcommand=None, checkport=None, request=None,
receive=None, httpmethod=HTTPMethod.GET, hostname=None, login=None, passwd=None, database=None,
secret=None, fingerprint=None, scheduler=Scheduler.wrr, persistent=None, protocol=None, **kwargs):
self.ip = None
if isinstance(port, int) and 0 < port <= 65535:
self.port = port
else:
raise ValueError
if isinstance(description, basestring):
self.description = description
else:
raise ValueError
if isinstance(checktimeout, int) and checktimeout > 0:
self.checktimeout = checktimeout
else:
raise ValueError
if isinstance(negotiatetimeout, int) and negotiatetimeout > 0:
self.negotiatetimeout = negotiatetimeout
else:
raise ValueError
if isinstance(checkinterval, int) and checkinterval > 0:
self.checkinterval = checkinterval
else:
raise ValueError
if isinstance(failurecount, int) and failurecount > 0:
self.failurecount = failurecount
else:
raise ValueError
if isinstance(checktype, Checktype):
self.checktype = checktype
else:
raise ValueError
if isinstance(quiescent, bool):
self.quiescent = quiescent
else:
raise ValueError
if isinstance(readdquiescent, bool):
self.readdquiescent = readdquiescent
else:
raise ValueError
if isinstance(cleanstop, bool):
self.cleanstop = cleanstop
else:
raise ValueError
if isinstance(service, basestring):
self.service = service
elif service is None:
self.service = None
else:
raise ValueError
if isinstance(checkcommand, basestring):
self.checkcommand = checkcommand
elif checkcommand is None:
self.checkcommand = None
else:
raise ValueError
if isinstance(checkport, int) and 0 < checkport <= 65535:
self.checkport = checkport
elif checkport is None:
self.checkport = None
else:
raise ValueError
if isinstance(request, basestring):
self.request = request
elif request is None:
self.request = None
else:
raise ValueError
if isinstance(receive, basestring):
self.receive = receive
elif receive is None:
self.receive = None
else:
raise ValueError
if isinstance(hostname, basestring):
self.hostname = hostname
elif hostname is None:
self.hostname = None
else:
raise ValueError
if isinstance(login, basestring):
self.login = login
elif login is None:
self.login = None
else:
raise ValueError
if isinstance(passwd, basestring):
self.passwd = passwd
elif passwd is None:
self.passwd = None
else:
raise ValueError
if isinstance(database, basestring):
self.database = database
elif database is None:
self.database = None
else:
raise ValueError
if isinstance(secret, basestring):
self.secret = secret
elif secret is None:
self.secret = None
else:
raise ValueError
if isinstance(fingerprint, basestring):
self.fingerprint = fingerprint
elif secret is None:
self.fingerprint = None
else:
raise ValueError
if isinstance(protocol, Protocol):
self.protocol = protocol
else:
raise ValueError
if isinstance(scheduler, Scheduler):
self.scheduler = scheduler
else:
raise ValueError
if isinstance(httpmethod, HTTPMethod):
self.httpmethod = httpmethod
else:
raise ValueError
# store any custom attributes
self.custom = kwargs
# variable initialization
self.is_present = False
class Virtual4(__Virtual):
"""
Configuration of an IPv4 virtual server.
"""
def __init__(self, ip, **kwargs):
super(Virtual4, self).__init__(**kwargs)
# check for valid IPv4
self.ip = ipaddress.ip_address(ip)
if self.ip.version != 4:
raise ValueError
# variable initialization
self.fallback = None
self.real = []
def add_real(self, real):
if isinstance(real, Real4):
self.real.append(real)
else:
raise ValueError
def remove_real(self, real):
self.real.remove(real)
def set_fallback(self, fallback=None):
if isinstance(fallback, Fallback4):
self.fallback = fallback
elif fallback is None:
self.fallback = None
else:
raise ValueError
class Virtual6(__Virtual):
"""
Configuration of an IPv6 virtual server.
"""
def __init__(self, ip, **kwargs):
super(Virtual6, self).__init__(**kwargs)
# check for valid IPv6
self.ip = ipaddress.ip_address(ip)
if self.ip.version != 6:
raise ValueError
# variable initialization
self.fallback = None
self.real = []
def add_real(self, real):
if isinstance(real, Real6):
self.real.append(real)
else:
raise ValueError
def remove_real(self, real):
self.real.remove(real)
def set_fallback(self, fallback=None):
if isinstance(fallback, Fallback6):
self.fallback = fallback
elif fallback is None:
self.fallback = None
else:
raise ValueError
class __Real(object):
"""
Base-class for real server configuration
"""
def __init__(self, port, method, weight=1, request=None, receive=None, **kwargs):
self.ip = None
# check for valid port
if isinstance(port, int) and 0 < port <= 65535:
self.port = port
else:
raise ValueError
if isinstance(method, ForwardingMethod):
self.method = method
else:
raise ValueError
# check for valid weight
if isinstance(weight, int) and 0 <= weight <= 65535:
self.weight = weight
else:
raise ValueError
if isinstance(request, basestring):
self.request = request
elif request is None:
self.request = None
else:
raise ValueError
if isinstance(receive, basestring):
self.receive = receive
elif receive is None:
self.receive = None
else:
raise ValueError
# store any custom attributes
self.custom = kwargs
# variable initialization
self.failcount = 0
self.current_weight = 0
self.is_present = False
class Real4(__Real):
"""
Configuration of an IPv4 real server.
"""
def __init__(self, ip, **kwargs):
super(Real4, self).__init__(**kwargs)
# check for valid IPv4
self.ip = ipaddress.ip_address(ip)
if self.ip.version != 4:
raise ValueError
class Real6(__Real):
"""
Configuration of an IPv6 real server.
"""
def __init__(self, ip, **kwargs):
super(Real6, self).__init__(**kwargs)
# check for valid IPv4
self.ip = ipaddress.ip_address(ip)
if self.ip.version != 6:
raise ValueError
class __Fallback(object):
"""
Base-class for fallback server configuration
"""
def __init__(self, port, method):
self.ip = None
# check for valid port
if isinstance(port, int) and 0 < port <= 65535:
self.port = port
else:
raise ValueError
if isinstance(method, ForwardingMethod):
self.method = method
else:
raise ValueError
# variable initialization
self.weight = 1
self.current_weight = 1
self.is_present = False
class Fallback4(__Fallback):
"""
Configuration of an IPv4 fallback server.
"""
def __init__(self, ip, **kwargs):
super(Fallback4, self).__init__(**kwargs)
# check for valid IPv4
self.ip = ipaddress.ip_address(ip)
if self.ip.version != 4:
raise ValueError
class Fallback6(__Fallback):
"""
Configuration of an IPv6 fallback server.
"""
def __init__(self, ip, **kwargs):
super(Fallback6, self).__init__(**kwargs)
# check for valid IPv4
self.ip = ipaddress.ip_address(ip)
if self.ip.version != 6:
raise ValueError