Helper script to test cloudformation scripts

build.sh

#!/usr/bin/env bash
# Helper commands for clouformation deploy in the EC2 instances
# curl http://169.254.169.254/latest/user-data
# cat /var/log/cloud-init-output.log
# sudo yum install htop tmux tcpdump telnet -y


# describe stack
# this parameters are not passed by command line parameters
# to ensure that the developer does not hit a different STACK NAME or template by mistake
# using the shell history
# This way we can add this build script to the project add the cf template/name/region
# and run inside the current directory

### MODIFIABLE PARAMETERS ###
ENVIRONMENT=dev
STACK="my-stack-template"
TEMPLATE_FILE=cloudformation.yaml
REGION="eu-central-1"
PROFILE="default"

### STATIC PARAMETERS ####
STACK_NAME="${ENVIRONMENT}-${STACK}"
STACK_PARAMS_FILE=stack-${REGION}.params
STACK_TAGS_FILE=stack.tags

INFO="StackName: '${STACK_NAME}', AWS Profile: '${PROFILE}', AWS Region: '${REGION}'"
LONG_INFO="${INFO}, Template file: '${TEMPLATE_FILE}'"

CF_AWS_CMD="aws --profile ${PROFILE} --region ${REGION} cloudformation"

function create_stack(){
    ${CF_AWS_CMD} create-stack \
    --stack-name  ${STACK_NAME} \
    --parameters file://./${STACK_PARAMS_FILE} \
    --tags file://./${STACK_TAGS_FILE} \
    --capabilities CAPABILITY_NAMED_IAM \
    --template-body file://${TEMPLATE_FILE}
}

function delete_stack(){
    echo "Deleting stack ${INFO}..."
    ${CF_AWS_CMD} delete-stack \
    --stack-name ${STACK_NAME}
}

function describe_stack(){
    echo "Describe stack ${LONG_INFO}"
    ${CF_AWS_CMD}  describe-stacks \
    --stack-name ${STACK_NAME} | jq '.Stacks[0].Tags' > ${STACK_TAGS_FILE}
    ${CF_AWS_CMD}  describe-stacks \
    --stack-name ${STACK_NAME} | jq '.Stacks[0].Parameters' > ${STACK_PARAMS_FILE}
}

function await_delete(){
    echo "Waiting for stack ${INFO} deletion ..."
    ${CF_AWS_CMD}  wait stack-delete-complete \
    --stack-name ${STACK_NAME} \
    --no-paginate
}

function await_create(){
    echo "Waiting for stack ${INFO} creation..."
    ${CF_AWS_CMD}  wait stack-create-complete \
    --stack-name ${STACK_NAME} \
    --no-paginate
}

while getopts cdsr option
do
case "${option}"
in
c) create_stack && await_create ;;
d) delete_stack && await_delete ;;
s) describe_stack ;;
r) delete_stack && await_delete && create_stack && await_create ;;
esac
done