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isso/isso/core.py

155 lines
3.7 KiB

# -*- encoding: utf-8 -*-
from __future__ import print_function
import io
import os
import time
import binascii
import threading
import socket
import smtplib
from configparser import ConfigParser
try:
import uwsgi
except ImportError:
uwsgi = None
from isso.compat import PY2K
if PY2K:
import thread
import httplib
import urlparse
else:
import _thread as thread
import http.client as httplib
import urllib.parse as urlparse
from isso import notify, colors
class Config:
default = [
"[general]",
"dbpath = /tmp/isso.db", "secretkey = %r" % binascii.b2a_hex(os.urandom(24)),
"host = http://localhost:8080/", "passphrase = p@$$w0rd",
"max-age = 900",
"[server]",
"host = localhost", "port = 8080", "reload = off",
"[SMTP]",
"username = ", "password = ",
"host = localhost", "port = 465", "ssl = on",
"to = ", "from = ",
"[guard]",
"enabled = on",
"ratelimit = 2"
""
]
@classmethod
def load(cls, configfile):
rv = ConfigParser(allow_no_value=True)
rv.read_file(io.StringIO(u'\n'.join(Config.default)))
if configfile:
rv.read(configfile)
return rv
def threaded(func):
def dec(self, *args, **kwargs):
thread.start_new_thread(func, (self, ) + args, kwargs)
return dec
class Mixin(object):
def __init__(self, *args):
self.lock = threading.Lock()
def notify(self, subject, body, retries=5):
pass
class NaiveMixin(Mixin):
def __init__(self, conf):
super(NaiveMixin, self).__init__()
try:
print(" * connecting to SMTP server", end=" ")
mailer = notify.SMTPMailer(conf)
print("[%s]" % colors.green("ok"))
except (socket.error, smtplib.SMTPException):
print("[%s]" % colors.red("failed"))
mailer = notify.NullMailer()
self.mailer = mailer
if not conf.get("general", "host").startswith(("http://", "https://")):
raise SystemExit("error: host must start with http:// or https://")
try:
print(" * connecting to HTTP server", end=" ")
rv = urlparse.urlparse(conf.get("general", "host"))
host = (rv.netloc + ':443') if rv.scheme == 'https' else rv.netloc
httplib.HTTPConnection(host, timeout=5).request('GET', rv.path)
print("[%s]" % colors.green("ok"))
except (httplib.HTTPException, socket.error):
print("[%s]" % colors.red("failed"))
@threaded
def notify(self, subject, body, retries=5):
for x in range(retries):
try:
self.mailer.sendmail(subject, body)
except Exception:
time.sleep(60)
else:
break
class uWSGIMixin(NaiveMixin):
def __init__(self, conf):
super(uWSGIMixin, self).__init__(conf)
class Lock():
def __enter__(self):
while uwsgi.queue_get(0) == "LOCK":
time.sleep(0.01)
uwsgi.queue_set(0, "LOCK")
def __exit__(self, exc_type, exc_val, exc_tb):
uwsgi.queue_pop()
def spooler(args):
try:
self.mailer.sendmail(args["subject"].decode('utf-8'), args["body"].decode('utf-8'))
except smtplib.SMTPConnectError:
return uwsgi.SPOOL_RETRY
else:
return uwsgi.SPOOL_OK
self.lock = Lock()
uwsgi.spooler = spooler
def notify(self, subject, body, retries=5):
uwsgi.spool({"subject": subject.encode('utf-8'), "body": body.encode('utf-8')})