AWS resources finder by subnet IDs

aws_resources_finder.sh

#!/usr/bin/env bash

# Add all the subnet ID you want to find resources
declare -a subnets=("subnet-id")

echo "Removing all previous data"
rm -rf rds_*.txt ec2_*.txt redshift_*.txt elasticache_*.txt codebuild_*.txt lambda_*.txt

find_rds () {
	echo "Finding RDS for $1"
	aws rds describe-db-instances | jq -r --arg subnet "$1" '.[][] | select(.DBSubnetGroup.Subnets[].SubnetIdentifier == $subnet).DBInstanceIdentifier' > rds_$1.txt
}

find_ec2 () {
	echo "Finding EC2 for $1"
	aws ec2 describe-instances | jq -r --arg subnet "$1" '.Reservations[].Instances[] | select(.NetworkInterfaces[].SubnetId == $subnet).Tags|from_entries|.Name' > ec2_$1.txt
}

find_redshift () {
	echo "Finding Redshift for $1"
	subnet_groups=$(aws redshift describe-cluster-subnet-groups | jq -r --arg subnet "$1" '.[][] | select(.Subnets[].SubnetIdentifier == $subnet).ClusterSubnetGroupName')
	touch redshift_$1.txt
	for subnet_group in ${subnet_groups}; do
		aws redshift describe-clusters | jq -r --arg subnetgroup "${subnet_group}" '.[] | select(.[].ClusterSubnetGroupName == $subnetgroup)' >> redshift_$1.txt
	done
}

find_elasticache () {
	echo "Finding ElastiCache for $1"
	subnet_groups=$(aws elasticache describe-cache-subnet-groups | jq -r --arg subnet "$1" '.[][] | select(.Subnets[].SubnetIdentifier == $subnet).CacheSubnetGroupName')
	touch elasticache_$1.txt
	for subnet_group in ${subnet_groups}; do
		aws elasticache describe-cache-clusters | jq -r --arg subnetgroup "${subnet_group}" '.[] | select(.[].CacheSubnetGroupName == $subnetgroup) | .[].CacheClusterId' >> elasticache_$1.txt
	done
}

find_codebuild () {
	echo "Finding CodeBuild for $1"
	codebuild_projects=($(aws codebuild list-projects | jq -r '.projects[]' | tr '\n' ' '))
	touch codebuild_$1.txt
	for codebuild_project in ${codebuild_projects[@]}; do
		if [[ $(aws codebuild batch-get-projects --names ${codebuild_project} --query "contains(projects[*].vpcConfig.subnets[], '$1')") == "true" ]]; then
			echo ${codebuild_project} >> codebuild_$1.txt
		fi
	done
}

find_lambda () {
	echo "Finding Lambda for $1"
	aws lambda list-functions --query "Functions[?VpcConfig.SubnetIds[? @ == '$1']].FunctionName" > lambda_$1.txt
}

for subnet in ${subnets[@]}; do
	find_rds ${subnet}

	find_ec2 ${subnet}

	find_redshift ${subnet}

	find_elasticache ${subnet}

	find_codebuild ${subnet}

	find_lambda ${subnet}
done