How to reinitialize a mysql connection in python AWS lambda
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I'm .NET developer, and sort of new to python and aws lambda.
I have a lambda written in python which connects to a mysql database. I was advised to put the connection outside the scope of the handler so that it will act as a sort of connection pool, avoiding excessive open connections as more lambdas spin up. This works, but if that connection is killed (for whatever reason), the lambdas fail, because they don't check to see if the connection is closed and re-open the connection. I've tried writing a sort of singleton wrapper class around it, but it didn't work, and I can't seem to re-assign a value to the variable within the scope of the handler. Is there any way of doing what I want? A basic outline of my lambda function is below (yes I know the sql isn't really valid for that method).
import pymysql
connection = pymysql.connect(MYSQL_ENDPOINT, user=MYSQL_USERNAME, passwd=MYSQL_PASSWORD, db=MYSQL_DBNAME, connect_timeout=5)
def lambda_handler(event, context):
def do_stuff():
with con.cursor() as cur:
cur.execute("SELECT * FROM table;")
con.commit()
python mysql aws-lambda pymysql
asked Nov 22 at 16:36
tuseau
56431030
add a comment |
up vote
0
down vote
favorite
I'm .NET developer, and sort of new to python and aws lambda.
I have a lambda written in python which connects to a mysql database. I was advised to put the connection outside the scope of the handler so that it will act as a sort of connection pool, avoiding excessive open connections as more lambdas spin up. This works, but if that connection is killed (for whatever reason), the lambdas fail, because they don't check to see if the connection is closed and re-open the connection. I've tried writing a sort of singleton wrapper class around it, but it didn't work, and I can't seem to re-assign a value to the variable within the scope of the handler. Is there any way of doing what I want? A basic outline of my lambda function is below (yes I know the sql isn't really valid for that method).
import pymysql
connection = pymysql.connect(MYSQL_ENDPOINT, user=MYSQL_USERNAME, passwd=MYSQL_PASSWORD, db=MYSQL_DBNAME, connect_timeout=5)
def lambda_handler(event, context):
def do_stuff():
with con.cursor() as cur:
cur.execute("SELECT * FROM table;")
con.commit()
python mysql aws-lambda pymysql
asked Nov 22 at 16:36
tuseau
56431030
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I'm .NET developer, and sort of new to python and aws lambda.
I have a lambda written in python which connects to a mysql database. I was advised to put the connection outside the scope of the handler so that it will act as a sort of connection pool, avoiding excessive open connections as more lambdas spin up. This works, but if that connection is killed (for whatever reason), the lambdas fail, because they don't check to see if the connection is closed and re-open the connection. I've tried writing a sort of singleton wrapper class around it, but it didn't work, and I can't seem to re-assign a value to the variable within the scope of the handler. Is there any way of doing what I want? A basic outline of my lambda function is below (yes I know the sql isn't really valid for that method).
import pymysql
connection = pymysql.connect(MYSQL_ENDPOINT, user=MYSQL_USERNAME, passwd=MYSQL_PASSWORD, db=MYSQL_DBNAME, connect_timeout=5)
def lambda_handler(event, context):
def do_stuff():
with con.cursor() as cur:
cur.execute("SELECT * FROM table;")
con.commit()
python mysql aws-lambda pymysql
asked Nov 22 at 16:36
tuseau
56431030
I'm .NET developer, and sort of new to python and aws lambda.
I have a lambda written in python which connects to a mysql database. I was advised to put the connection outside the scope of the handler so that it will act as a sort of connection pool, avoiding excessive open connections as more lambdas spin up. This works, but if that connection is killed (for whatever reason), the lambdas fail, because they don't check to see if the connection is closed and re-open the connection. I've tried writing a sort of singleton wrapper class around it, but it didn't work, and I can't seem to re-assign a value to the variable within the scope of the handler. Is there any way of doing what I want? A basic outline of my lambda function is below (yes I know the sql isn't really valid for that method).
import pymysql
connection = pymysql.connect(MYSQL_ENDPOINT, user=MYSQL_USERNAME, passwd=MYSQL_PASSWORD, db=MYSQL_DBNAME, connect_timeout=5)
def lambda_handler(event, context):
def do_stuff():
with con.cursor() as cur:
cur.execute("SELECT * FROM table;")
con.commit()
python mysql aws-lambda pymysql
python mysql aws-lambda pymysql
asked Nov 22 at 16:36
tuseau
56431030
asked Nov 22 at 16:36
tuseau
56431030
asked Nov 22 at 16:36
tuseau
56431030
asked Nov 22 at 16:36
tuseau
56431030
asked Nov 22 at 16:36
tuseau
56431030
56431030
add a comment |
add a comment |
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