A api add monitor scheduler

pull/22/head
雷二猛 2019-12-02 23:18:38 +08:00
parent 76c2bcf922
commit 588395150a
7 changed files with 200 additions and 7 deletions

View File

@ -0,0 +1,48 @@
from libs.ssh import SSH
from apps.host.models import Host
from apps.setting.utils import AppSetting
from socket import socket
import requests
import logging
logging.captureWarnings(True)
def site_check(url):
status_code = -1
try:
res = requests.get(url, timeout=10, verify=False)
status_code = res.status_code
finally:
return status_code == 200
def port_check(addr, port):
sock = socket()
sock.settimeout(5)
return sock.connect_ex((addr, int(port))) == 0
def host_executor(host, pkey, command):
exit_code = -1
try:
cli = SSH(host.hostname, host.port, host.username, pkey=pkey)
exit_code, _ = cli.exec_command(command)
finally:
return exit_code == 0
def dispatch(tp, addr, extra):
if tp == '1':
return site_check(addr)
elif tp == '2':
return port_check(addr, extra)
elif tp == '3':
command = f'ps -ef|grep -v grep|grep {extra!r}'
elif tp == '4':
command = extra
else:
raise TypeError(f'invalid monitor type: {tp!r}')
pkey = AppSetting.get('private_key')
host = Host.objects.filter(pk=addr).first()
return host_executor(host, pkey, command)

View File

@ -0,0 +1,10 @@
from django.core.management.base import BaseCommand
from apps.monitor.scheduler import Scheduler
class Command(BaseCommand):
help = 'Start monitor process'
def handle(self, *args, **options):
s = Scheduler()
s.run()

View File

@ -10,6 +10,10 @@ class Detection(models.Model, ModelMixin):
('3', '进程检测'),
('4', '自定义脚本'),
)
STATUS = (
(0, '成功'),
(1, '失败'),
)
name = models.CharField(max_length=50)
type = models.CharField(max_length=2, choices=TYPES)
addr = models.CharField(max_length=255)
@ -19,6 +23,11 @@ class Detection(models.Model, ModelMixin):
rate = models.IntegerField(default=5)
threshold = models.IntegerField(default=3)
quiet = models.IntegerField(default=24 * 60)
fault_times = models.SmallIntegerField(default=0)
latest_status = models.SmallIntegerField(choices=STATUS, null=True)
latest_run_time = models.CharField(max_length=20, null=True)
latest_fault_time = models.IntegerField(null=True)
latest_notify_time = models.IntegerField(default=0)
created_at = models.CharField(max_length=20, default=human_time)
created_by = models.ForeignKey(User, models.PROTECT, related_name='+')
@ -28,6 +37,7 @@ class Detection(models.Model, ModelMixin):
def to_dict(self, *args, **kwargs):
tmp = super().to_dict(*args, **kwargs)
tmp['type_alias'] = self.get_type_display()
tmp['latest_status_alias'] = self.get_latest_status_display()
return tmp
def __repr__(self):

View File

@ -0,0 +1,90 @@
from apscheduler.schedulers.background import BackgroundScheduler
from apscheduler.triggers.interval import IntervalTrigger
from apscheduler import events
from django_redis import get_redis_connection
from apps.monitor.models import Detection
from apps.monitor.executors import dispatch
from django.conf import settings
from libs import AttrDict, human_time
import logging
import json
import time
logger = logging.getLogger("django.apps.monitor")
class Scheduler:
timezone = settings.TIME_ZONE
def __init__(self):
self.scheduler = BackgroundScheduler(timezone=self.timezone)
self.scheduler.add_listener(self._handle_event, )
def _handle_notify(self, obj, old_status):
if obj.latest_status == 0:
if old_status == 1:
logger.info(f'{human_time()} recover job_id: {obj.id}')
else:
if obj.fault_times >= obj.threshold:
if time.time() - obj.latest_notify_time >= obj.quiet * 60:
obj.latest_notify_time = int(time.time())
obj.save()
logger.info(f'{human_time()} notify job_id: {obj.id}')
def _handle_event(self, event):
# TODO: notify to user
if event.code == events.EVENT_SCHEDULER_SHUTDOWN:
logger.info(f'EVENT_SCHEDULER_SHUTDOWN: {event}')
if event.code == events.EVENT_JOB_MAX_INSTANCES:
logger.info(f'EVENT_JOB_MAX_INSTANCES: {event}')
if event.code == events.EVENT_JOB_ERROR:
logger.info(f'EVENT_JOB_ERROR: job_id {event.job_id} exception: {event.exception}')
if event.code == events.EVENT_JOB_MISSED:
logger.info(f'EVENT_JOB_MISSED: job_id {event.job_id}')
if event.code == events.EVENT_JOB_EXECUTED:
obj = Detection.objects.filter(pk=event.job_id).first()
old_status = obj.latest_status
obj.latest_status = 0 if event.retval else 1
obj.latest_run_time = human_time(event.scheduled_run_time)
if old_status == 0 and event.retval is False:
obj.latest_fault_time = int(time.time())
if obj.latest_status == 0:
obj.latest_notify_time = 0
obj.fault_times = 0
else:
obj.fault_times += 1
obj.save()
self._handle_notify(obj, old_status)
def _init(self):
self.scheduler.start()
for item in Detection.objects.filter(is_active=True):
trigger = IntervalTrigger(minutes=int(item.rate), timezone=self.timezone)
self.scheduler.add_job(
dispatch,
trigger,
id=str(item.id),
args=(item.type, item.addr, item.extra),
)
def run(self):
rds_cli = get_redis_connection()
self._init()
rds_cli.delete(settings.MONITOR_KEY)
logger.info('Running monitor')
while True:
_, data = rds_cli.blpop(settings.MONITOR_KEY)
task = AttrDict(json.loads(data))
if task.action in ('add', 'modify'):
trigger = IntervalTrigger(minutes=int(task.rate), timezone=self.timezone)
self.scheduler.add_job(
dispatch,
trigger,
id=str(task.id),
args=(task.type, task.addr, task.extra),
replace_existing=True
)
elif task.action == 'remove':
job = self.scheduler.get_job(str(task.id))
if job:
job.remove()

View File

@ -1,6 +1,9 @@
from django.views.generic import View
from libs import json_response, JsonParser, Argument, human_time
from apps.monitor.models import Detection
from django_redis import get_redis_connection
from django.conf import settings
import json
class DetectionView(View):
@ -22,12 +25,38 @@ class DetectionView(View):
).parse(request.body)
if error is None:
if form.id:
form.updated_at = human_time()
form.updated_by = request.user
Detection.objects.filter(pk=form.pop('id')).update(**form)
Detection.objects.filter(pk=form.id).update(
updated_at=human_time(),
updated_by=request.user,
**form)
task = Detection.objects.filter(pk=form.id).first()
if task and task.is_active:
form.action = 'modify'
rds_cli = get_redis_connection()
rds_cli.rpush(settings.MONITOR_KEY, json.dumps(form))
else:
form.created_by = request.user
Detection.objects.create(**form)
Detection.objects.create(created_by=request.user, **form)
form.action = 'add'
rds_cli = get_redis_connection()
rds_cli.rpush(settings.MONITOR_KEY, json.dumps(form))
return json_response(error=error)
def patch(self, request):
form, error = JsonParser(
Argument('id', type=int, help='请指定操作对象'),
Argument('is_active', type=bool, required=False)
).parse(request.body, True)
if error is None:
Detection.objects.filter(pk=form.id).update(**form)
if form.get('is_active') is not None:
if form.is_active:
task = Detection.objects.filter(pk=form.id).first()
message = {'id': form.id, 'action': 'add'}
message.update(task.to_dict(selects=('addr', 'extra', 'rate', 'type')))
else:
message = {'id': form.id, 'action': 'remove'}
rds_cli = get_redis_connection()
rds_cli.rpush(settings.MONITOR_KEY, json.dumps(message))
return json_response(error=error)
def delete(self, request):
@ -35,5 +64,9 @@ class DetectionView(View):
Argument('id', type=int, help='请指定操作对象')
).parse(request.GET)
if error is None:
Detection.objects.filter(pk=form.id).delete()
task = Detection.objects.filter(pk=form.id).first()
if task:
if task.is_active:
return json_response(error='该监控项正在运行中,请先停止后再尝试删除')
task.delete()
return json_response(error=error)

View File

@ -2,4 +2,5 @@ apscheduler==3.6.3
Django==2.2.7
channels==2.3.1
paramiko==2.6.0
django-redis==4.10.0
django-redis==4.10.0
requests==2.22.0

View File

@ -81,6 +81,7 @@ CHANNEL_LAYERS = {
}
SCHEDULE_KEY = 'spug:schedule'
MONITOR_KEY = 'spug:monitor'
# Internationalization
# https://docs.djangoproject.com/en/2.2/topics/i18n/