Differences between revisions 13 and 14

moto

A python library that allows you to easily mock out tests based on AWS infrastructure.

Install AWS CLI

   1 # Install aws cli
   2 cd ~/Downloads
   3 curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
   4 unzip awscliv2.zip
   5 sudo ./aws/install
   6 aws --version

Create S3 bucket

   1 export AWS_ACCESS_KEY_ID='testing'
   2 export AWS_SECRET_ACCESS_KEY='testing'
   3 export AWS_SECURITY_TOKEN='testing'
   4 export AWS_SESSION_TOKEN='testing'
   5 export AWS_DEFAULT_REGION='us-east-1'
   6 export AWS_ENDPOINT_URL="http://localhost:4000" 
   7 
   8 docker run --rm -p 4000:4000 --name moto motoserver/moto:latest

compose.yaml

   1 services:
   2   motoserver:
   3     image: motoserver/moto:latest
   4     ports:
   5       - "4000:4000"
   6     environment:
   7       - MOTO_PORT=4000 # set moto listener port with env var

   1 docker compose up
   2 docker compose exec motoserver sh
   3 # in the container 
   4 cat /etc/os-release
   5 # NAME="Alpine Linux"
   6 exit
   7 
   8 aws s3 ls 
   9 aws s3api create-bucket --bucket my-bucket 
  10 # https://docs.aws.amazon.com/cli/latest/reference/s3api/
  11 echo "test" > test.txt
  12 aws s3api put-object --bucket my-bucket --key dir-1/test.txt --body test.txt 
  13 aws s3api get-object --bucket my-bucket --key dir-1/test.txt test2.txt 
  14 cat test2.txt 
  15 aws s3 ls

Create lambda function

lambda_function.py

   1 import boto3
   2 import os
   3 
   4 def lambda_handler(event, context):
   5     message = 'Hello {} {}!'.format(event['first_name'], event['last_name'])
   6     session = boto3.session.Session()
   7     s3 = session.client( service_name='s3' )
   8 
   9     buckets=[]
  10     for bucket in s3.list_buckets()['Buckets']:
  11         buckets.append(bucket['Name'])
  12 
  13     response = s3.create_bucket(Bucket='examplebucket')
  14 
  15     body = {
  16         'message' : message,
  17         'buckets' : buckets,
  18         'AWS_ACCESS_KEY_ID' : os.environ["AWS_ACCESS_KEY_ID"],
  19         'AWS_SECRET_ACCESS_KEY' : os.environ["AWS_SECRET_ACCESS_KEY"],
  20         'AWS_DEFAULT_REGION' : os.environ["AWS_DEFAULT_REGION"],
  21         'AWS_ENDPOINT_URL': os.environ['AWS_ENDPOINT_URL']
  22     }
  23 
  24     s3.put_object(Body=str(body), Bucket='examplebucket', Key='examplebucket/response.txt')
  25     return body

   1 nano lambda_function.py 
   2 zip py-my-function.zip lambda_function.py
   3 aws lambda delete-function --function-name py-my-function
   4 aws iam delete-role --role-name lambda-ex
   5 
   6 aws iam create-role --role-name lambda-ex --assume-role-policy-document '{"Version": "2012-10-17","Statement": [{ "Effect": "Allow", "Principal": {"Service": "lambda.amazonaws.com"}, "Action": "sts:AssumeRole"}]}'
   7 
   8 ROLE_ARN=$(aws iam list-roles | jq ".Roles[0].Arn" | sed 's/\"//g')
   9 
  10 echo $ROLE_ARN
  11 
  12 aws lambda create-function --function-name py-my-function --zip-file fileb://py-my-function.zip --handler lambda_function.lambda_handler --runtime python3.14 --role  $ROLE_ARN --timeout 30