Guozhongyuan/Urcar

2022.03.29

Intro

Use Web3-python to initialize and create an unchangeable smart contract for each vehicle, retrieve the contract address according to the vehicle ID, and query the vehicle information.

Env

Ubuntu 20.04
python 3.8
web3
py-solc-x
apache2
wsgi
requirements.txt

1. 部署地址

在这里访问

2. 如何使用 apache2 和 wdgi 部署 dash app

https://github.com/fox000002/blog/blob/master/Install-Python-Dash-App-on-Ubuntu-Server.md https://blog.csdn.net/qq_37430374/article/details/104249340

3. 配置过程记录

sudo add-apt-repository ppa:deadsnakes/ppa

sudo apt-get install mysql-client mysql-server

sudo apt-get install python3.8 python3.8-dev

sudo apt-get install apache2 apache2-dev

curl https://bootstrap.pypa.io/get-pip.py | sudo python3.8

sudo pip3.8 install mod_wsgi

mod_wsgi-express module-config

LoadModule wsgi_module "/usr/local/lib/python3.8/dist-packages/mod_wsgi/server/mod_wsgi-py38.cpython-38-x86_64-linux-gnu.so"
WSGIPythonHome "/usr"

sudo vim /etc/apache2/mods-available/wsgi.load

sudo pip3.8 install dash dash_bootstrap_components pandas 

sudo vim /etc/apache2/sites-available/FlaskApp.conf

<VirtualHost *:80>
   ServerName 120.78.228.15
   ServerAdmin zhongyuanguo@foxmail.com
   WSGIScriptAlias / /var/www/FlaskApp/FlaskApp.wsgi
   <Directory /var/www/FlaskApp/FlaskApp/>
        Order allow,deny
        Allow from all
   </Directory>
   ErrorLog ${APACHE_LOG_DIR}/FlaskApp-error.log
   LogLevel warn
   CustomLog ${APACHE_LOG_DIR}/FlaskApp-access.log combined
</VirtualHost>

sudo a2ensite FlaskApp

sudo vim /var/www/FlaskApp/FlaskApp.wsgi

#!/usr/bin/python3.8
# 测试用例，__init__.py
import sys
import logging
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0,"/var/www/FlaskApp/FlaskApp/")
from FlaskApp.app import app
application = app.server

4. 怎样debug

每次改完py之后 service apache2 reload

如果网页显示不成功，在这里查看报错信息 cd /var/log/apache2 vim FlaskApp-error.log

5. TODO

mkdir /var/www/.solcx，但是 web3 仍未获得权限
添加进 FlaskApp.wsgi，无效

from solcx import install_solc
install_solc(version='latest')

Guozhongyuan / Urcar