valar for morghulis
1. installation
- you need to install valar in a django project
pip install valar
2. root app
- you only need 3 files in your root app
- settings.py
- asgi.py
- urls.py
2.1 settings.py and _init.py
from pathlib import Path
""" Compulsory settings """
DEBUG = True
BASE_DIR = Path(__file__).resolve().parent.parent
BASE_APP = str(BASE_DIR.name)
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
SECRET_KEY = 'django-insecure-of@tfouoq^_f$l!yki#m=6j7)@&kjri$1_$!mca-=%7=+@f@5^'
""" Minimized compulsory settings """
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql', # 使用 MySQL
'NAME': 'vm_ets', # 数据库名
'USER': 'root', # 用户名
'PASSWORD': password, # 密码
'HOST': 'localhost', # 数据库地址，本机用127.0.0.1
'PORT': '3306', # MySQL端口，默认3306
'OPTIONS': {
'connect_timeout': 5, # 默认10秒，可以缩短
'charset': 'utf8mb4',
}
}
}
INSTALLED_APPS = [
'django.contrib.sessions',
"corsheaders",
'channels',
'valar.apps.ValarConfig',
]
MIDDLEWARE = [
'django.contrib.sessions.middleware.SessionMiddleware',
'corsheaders.middleware.CorsMiddleware',
'django.middleware.common.CommonMiddleware',
'valar.auth.Middleware.ValarMiddleware'
]
CHANNEL_LAYERS = {
"default": {
"BACKEND": "channels.layers.InMemoryChannelLayer"
}
}
CORS_ORIGIN_ALLOW_ALL = True
CORS_ALLOW_CREDENTIALS = True
ROOT_URLCONF = "%s.urls" % BASE_APP
ASGI_APPLICATION = "%s.asgi.application" % BASE_APP
""" Optional settings """
ALLOWED_HOSTS = ['*']
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'Asia/Shanghai'
USE_I18N = True
USE_TZ = False
SESSION_SAVE_EVERY_REQUEST = True
SESSION_COOKIE_AGE = 60 * 60
FILE_UPLOAD_MAX_MEMORY_SIZE = 1024 * 1024 * 100
DATA_UPLOAD_MAX_MEMORY_SIZE = 1024 * 1024 * 100
""" Valar Options """
HANDLER_MAPPING = "%s.urls.channel_mapping" % BASE_APP
MONGO_URI = f'mongodb://root:{password}@{host}:27017/'
MINIO_URL = f"s3://admin:{password}@{host}:9001"
MINIO_ROOT = f"http://{host}:9001"
""" Email Options """
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.126.com'
EMAIL_PORT = 25
EMAIL_HOST_USER = "xxxx@126.com"
EMAIL_HOST_PASSWORD = 'CGiKQh5FyQyupQYA'
import pymysql
pymysql.install_as_MySQLdb()
2.2 asgi.py
import os
from pathlib import Path
from django.core.asgi import get_asgi_application
from channels.routing import ProtocolTypeRouter, URLRouter
from django.urls import re_path
from valar.channels.consumer import ValarConsumer
os.environ.setdefault('DJANGO_SETTINGS_MODULE', '%s.settings' % Path(__file__).resolve().parent.parent.name)
application = ProtocolTypeRouter({
'http': get_asgi_application(),
'websocket': URLRouter([
re_path(r'(?P<client>\w+)/$', ValarConsumer.as_asgi()),
])
})
2.3 urls.py
from django.urls import path, include
urlpatterns = [
path('valar/', include('valar.urls')),
]
- go to section 4 to see how to register channel handlers (a Vue - Django async communication tool) in urls.
3. migrate
- no need to makemigrations and migrate for valar, valar will auto migration
4. how to register a channel handler for Morghulis async methods
4.1 create a handler
import time
from valar.channels.sender import ValarChannelSender
from valar.channels.counter import Counter
def valar_test_handler(sender: ValarChannelSender):
data = sender.data
length = data.get('length', 100)
counter = Counter(length)
for i in range(length):
time.sleep(0.1)
tick = counter.tick()
tick.update({'name': 'test1'})
sender.load(tick)
4.2 create a dict (e.g. using the name 'channel_mapping') to save your handler
- I'd like to put it in the root urls.py, you can put it anywhere
channel_mapping = {
'test': valar_test_handler,
}
4.3 register the channel_mapping in the settings.py
HANDLER_MAPPING = "%s.urls.channel_mapping" % BASE_APP
4.4 you can copy the following codes to your urls.py
import json
from django.urls import path
from valar.classes.valar_response import ValarResponse
from valar.views.handler import valar_test_handler
def test_request(request):
body = json.loads(request.body)
return ValarResponse(body)
urlpatterns = [
path('test', test_request),
]
channel_mapping = {
'test_handler': valar_test_handler,
}
5. create an orm model extends the AbstractUser class, enable the authentication of Valar
class User(AbstractUser):
"""
any fields you want
"""
description = models.TextField(null=True, verbose_name='备注')
class Meta:
verbose_name = 'User'
1 maintainer
Metadata
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Release files for valar 1.3.30
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