[LocaStack Cheat Sheet] #LocaStack #AWS

README.md

Localstack Cheat Sheet

Environment

I put everything in us-east-1 so this might not be for you.

export AWS_ACCESS_KEY_ID="test"
export AWS_SECRET_ACCESS_KEY="test"
export AWS_DEFAULT_REGION="us-east-1"

S3

REFERENCES:

• <bucket-name> = bucket name
• <item> = item to upload
• <lambda-name> = the name of the lambada

Create S3 Bucket

awslocal s3api create-bucket --bucket <bucket-name> --region us-east-1

List S3 All Buckets

awslocal s3api list-buckets

Upload Item to S3 Bucket

awslocal s3api put-object \
  --bucket <bucket-name> \
  --key <item> \
  --body image.jpg

List items in a S3 Bucket

awslocal s3api list-objects \
  --bucket <bucket-name>

Cloudformation

List all cloudformations in all regions

#!/usr/bin/env bash
( awslocal ec2 describe-regions | jq -r '.Regions[].RegionName' ) | while IFS= read -r line
do
 awslocal cloudformation describe-stacks --region $line
done

Lambda

List all the versions of a Lambda

[!note] if you published versions

awslocal lambda list-versions-by-function --function-name <lambda-name>  --query 'Versions[*][Version, FunctionArn]' --output json

Execute a Lambda w/o api gateway

base64 -i input.json -o input.txt
awslocal lambda invoke --function-name my-function --payload file://input.txt outputfile.txt

In this command:

• base64 encode the JSON file to a text file.
• my-function is the name of your Lambda function.
• file://input.json is the path to the JSON file that contains the payload to be passed to the Lambda function.
• outputfile.txt is the file where the output of the Lambda function will be stored.

The input.json file might look like this:

{
   "key1": "value1",
   "key2": "value2",
   "key3": "value3"
}