![](/img/trans.png)
[英]AWS Lambda (Python + Flask) basic functionality not working using API Gateway
[英]AWS API GW + Lambda Flask
我正在嘗試使用 Flask 設置使用 API Gateway 和 Lambda 的應用程序。 當我使用一個簡單的 lambda 函數返回一個字符串時,一切正常。
def lambda_handler(event, context):
return "Hello world"
但是,當我嘗試通過 flask-lambda 運行同樣的事情時,我收到以下代碼錯誤:
from flask_lambda import FlaskLambda
app = FlaskLambda(__name__)
@app.route('/', methods=['GET', 'POST'])
def home():
return "Hello world"
if __name__ == '__main__':
app.run(debug=True)
這是我通過瀏覽器得到的錯誤:
{"errorMessage": "'wsgi.url_scheme'", "errorType": "KeyError", "stackTrace": [" File \"/var/task/flask_lambda.py\", line 97, in __call__\n return super(FlaskLambda, self).__call__(event, context)\n", " File \"/var/task/flask/app.py\", line 2088, in __call__\n return self.wsgi_app(environ, start_response)\n", " File \"/var/task/flask/app.py\", line 2065, in wsgi_app\n ctx = self.request_context(environ)\n", " File \"/var/task/flask/app.py\", line 1982, in request_context\n return RequestContext(self, environ)\n", " File \"/var/task/flask/ctx.py\", line 309, in __init__\n self.url_adapter = app.create_url_adapter(self.request)\n", " File \"/var/task/flask/app.py\", line 1774, in create_url_adapter\n return self.url_map.bind_to_environ(\n", " File \"/var/task/werkzeug/routing.py\", line 1651, in bind_to_environ\n wsgi_server_name = get_host(environ).lower()\n", " File \"/var/task/werkzeug/wsgi.py\", line 113, in get_host\n environ[\"wsgi.url_scheme\"],\n"]}
我不知道我是否需要將 env 變量添加到 lambda 或什么。 我添加了以下環境變量進行測試,只是往牆上扔東西:
Environment:
Variables:
TABLE_NAME: blah-table
REGION_NAME: !Ref AWS::Region
SERVER_NAME: !Sub 'xxxxxxxxx.execute-api.${AWS::Region}.amazonaws.com'
SERVER_PORT: 443
HTTP_HOST: !Sub 'xxxxxxxx.execute-api.${AWS::Region}.amazonaws.com'
WSGI_SERVER_NAME: !Sub 'xxxxxxxx.execute-api.${AWS::Region}.amazonaws.com'
任何朝着正確方向的推動都非常感謝。
我已經放棄使用flask-lambda,而是修改了awsgi https://github.com/slank/awsgi包以使用有效負載版本2.0 事件格式。
來自https://github.com/slank/awsgi :
import awsgi
from flask import (
Flask,
jsonify,
)
app = Flask(__name__)
@app.route('/')
def index():
return jsonify(status=200, message='OK')
def lambda_handler(event, context):
return awsgi.response(app, event, context, base64_content_types={"image/png"})
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.