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- #對整個應用做初始化操作
- #主要工作:
- # 1.構建Flask的應用以及各種配置
- #2.構建SQLAlchemy的應用
- from flask import Flask
- from flask_sqlalchemy import SQLAlchemy
- import pymysql
- import eventlet
- from flask_mqtt import Mqtt
- from datetime import timedelta
- from flask_jwt_extended import JWTManager
- from flask_socketio import SocketIO
- jwt = JWTManager()
- #綠化(綠色線程)所有系統模組,實現IO多路複用
- eventlet.monkey_patch()
- pymysql.install_as_MySQLdb()
- #設置上傳文件路徑
- UPLOAD_FOLDER = 'app/static/farm_img'
- #設置允許文件副檔名
- ALLOWED_EXTENSIONS = set(['pdf', 'png', 'jpg', 'jpeg', 'gif'])
- def create_app():
- global UPLOAD_FOLDER
- app = Flask(__name__)
- #配置啟動模式為調適模式
- # app.config['DEBUG'] = True
- #配置數據庫的連接字符串
- app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql://sixth:skyeye@52.69.200.169:3306/Sixth'
- #配置數據庫內容再更新時自動提交
- app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True
- #配置session所需要的秘鑰
- app.config['SECRET_KEY'] = 'you guess'
- # template 有修改後,會自動去更新
- app.config['TEMPLATES_AUTO_RELOAD'] = True
- # 如果设置成True(默认情况),Flask - SQLAlchemy将会追踪对象的修改并且发送信号。这需要额外的内存, 如果不必要的可以禁用它
- app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = True
- #資料库连接池的大小。默认是数据库引擎的默认值 (通常是5)
- app.config['SQLALCHEMY_POOL_SIZE'] = 100
- #指定資料库连接池的超时时间。默认是 10
- app.config['SQLALCHEMY_POOL_TIMEOUT'] = 60 * 60
- #自动回收连接的秒数。这对 MySQL 是必须的,默认 情况下 MySQL 会自动移除闲置 8 小时或者以上的连接。 需要注意地是如果使用 MySQL 的话, Flask-SQLAlchemy 会自动地设置这个值为 2 小时
- app.config['SQLALCHEMY_MAX_OVERFLOW'] = 15
- #設置session有效期為31天
- # app.config['PERMANENT_SESSION_LIFETIME'] = timedelta(days=31)
- #設置上傳文件的路徑
- app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
- # 如果超過檔案大小限制,Flask將會拋出RequestEntityTooLarge的例外錯誤。
- app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024 # 16MB
- # 設定 JWT 密鑰
- app.config['JWT_SECRET_KEY'] = 'this-should-be-change'
- jwt.init_app(app)
- # app.config['JWT_TOKEN_LOCATION'] = ['headers', 'query_string']
- # app.config['JWT_TOKEN_LOCATION'] = ['query_string']
- # app.config['JWT_QUERY_STRING_NAME'] = 'jwt'
- app.config['PROPAGATE_EXCEPTIONS'] = True
- app.config['SECRET'] = 'my secret key'
- #MQTT相關設置
- app.config['MQTT_BROKER_URL'] = '60.250.156.234'
- app.config['MQTT_BROKER_PORT'] = 1883
- app.config['MQTT_USERNAME'] = 'aisky-client'
- app.config['MQTT_PASSWORD'] = 'aiskyc'
- #將發送ping到代理的時間間隔設置60秒
- app.config['MQTT_KEEPALIVE'] = 60
- #出於測試目的將TLS設置為禁用
- app.config['MQTT_TLS_ENABLED'] = False
- #數據庫的初始化
- db = SQLAlchemy(app)
- db.init_app(app)
- mqtt = Mqtt(app)
- socketio = SocketIO(app, cors_allowed_origins='*')
- #將main藍圖程序與app關聯到一起
- from .main import main as main_blueprint
- app.register_blueprint(main_blueprint)
- #將user藍圖程序與app關聯到一起
- from .user import user as user_blueprint
- app.register_blueprint(user_blueprint)
- return app, db, mqtt, socketio
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