Add SQS Event Source Mapping to trigger AWS Lambdas

README.md

Add SQS Event Source Mappings to trigger AWS Lambdas

CLI tools are: aws, jq, more, grep

Tips

# `jq -C` enables the colors
# `jq -r` outputs raw text format instead of JSON
# `more -R` renders formatting characters like terminal colors

List lambdas function

aws lambda list-functions | jq -r '.Functions[].FunctionName'

List event source mappings of a function

FUNCTION_NAME=
aws lambda list-event-source-mappings --function-name $FUNCTION_NAME | jq -C | more -R

List SQS queues

# Get Queue URL
PREFIX=app-
SUFFIX='-dlq$'
for SQS_URL in $(aws sqs list-queues --queue-name-prefix "$PREFIX" | jq -r '.QueueUrls[]' | grep -- "$SUFFIX"); do
  echo $(aws sqs get-queue-attributes --queue-url "$SQS_URL" --attribute-names QueueArn | jq -r .Attributes.QueueArn)
done

Add an event source mapping to a function

FUNCTION_NAME=
SQS_ARN=
aws lambda create-event-source-mapping --function-name "$FUNCTION_NAME" --event-source-arn "$SQS_ARN" --batch-size 5 --enabled --maximum-batching-window-in-seconds 0

bind_sqs_to_lambda.sh

#!/bin/bash
set -euo pipefail
shopt -s nullglob

FUNCTION_NAME=
PREFIX=app-
SUFFIX='-plq$'

for SQS_URL in $(aws sqs list-queues --queue-name-prefix "$PREFIX" | jq -r '.QueueUrls[]' | grep -- "$SUFFIX"); do
  SQS_ARN=$(aws sqs get-queue-attributes --queue-url "$SQS_URL" --attribute-names QueueArn | jq -r .Attributes.QueueArn)
  aws lambda create-event-source-mapping --function-name "$FUNCTION_NAME" --event-source-arn "$SQS_ARN" --batch-size 5 --enabled --maximum-batching-window-in-seconds 0 || true
done