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troposphere runner
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| #!/bin/bash | |
| # https://gist.github.com/gcchaan/ad8fd83a68467503ec3e6392ebbd519a | |
| set -ef -o pipefail | |
| function message(){ | |
| echo 🍣 "$1" | |
| } | |
| function help(){ | |
| cat <<- EOF | |
| Usage: | |
| cfn_run.sh [OPTIONS] TEMPLATE_FILE | |
| Options: | |
| -r region | |
| -c leave change-set | |
| -s TODO: silent mode | |
| -h help | |
| Examples: | |
| run: | |
| run.sh -r us-northeast-1 stack.py | |
| EOF | |
| exit 0 | |
| } | |
| function set_region(){ | |
| readonly master_regions=($(aws ec2 describe-regions | jq -r ".Regions[].RegionName | @text")) | |
| for master_region in "${master_regions[@]}"; do | |
| [[ "$master_region" == "$OPTARG" ]] && region_exists=true | |
| done | |
| if ${region_exists:-false}; then | |
| readonly region_from_option=$OPTARG | |
| message "set region" | |
| echo ${region_from_option} | |
| else | |
| echo "Could not find region '$OPTARG'." | |
| echo "You could choose from below." | |
| echo "${master_regions[@]}" | |
| exit 1 | |
| fi | |
| } | |
| while getopts r:c:h opt; do | |
| case "$opt" in | |
| r) set_region $OPTARG;; | |
| c) readonly leaving_change_set=true;; | |
| h) help;; | |
| \?) exit 1;; | |
| esac | |
| done | |
| shift $((--OPTIND)) | |
| readonly dir=$(cd "$(dirname "$0")" && pwd) | |
| readonly json_file="$dir"/tmp.json | |
| readonly region=${region_from_option:-ap-northeast-1} | |
| readonly aws_command="aws --region $region" | |
| readonly aws_cfn_command="$aws_command cloudformation" | |
| if [[ -f "$1" ]]; then | |
| template_file=$1 | |
| stack_name=$(echo $template_file | sed s/.py// | sed s/_/-/g) | |
| else | |
| echo "Could not find file '$1'"; exit 1 | |
| fi | |
| function set_notification(){ | |
| message "set notification" | |
| readonly topic_arn=$($aws_command sns list-topics | jq -r '.Topics[].TopicArn') | |
| readonly topic_name=$(echo $topic_arn | sed 's/.*\://') | |
| if [[ $topic_name == "SlackTopic" ]]; then | |
| readonly notification_flag="--notification-arns $topic_arn " | |
| echo "$topic_arn" | |
| else | |
| readonly notification_flag="" | |
| echo "no setting." | |
| fi | |
| } | |
| function remove_local_json(){ | |
| message "removing local temporary file" | |
| rm "$1" | |
| } | |
| function display_change_set_url(){ | |
| message "change set URL here." | |
| [[ -z $1 ]] && echo "arn could not find." && return | |
| local _change_set_arn=$1 | |
| echo "https://${region}.console.aws.amazon.com/cloudformation/home?region=${region}#/changeset/detail?changeSetId=${_change_set_arn}" | |
| } | |
| function delete_change_set(){ | |
| message "delete change set" | |
| [[ -z $1 ]] && echo "arn could not find." && return | |
| local _change_set_arn=$1 | |
| if ${leaving_change_set:-false}; then | |
| echo "skipped." | |
| else | |
| $aws_command cloudformation delete-change-set --change-set-name $_change_set_arn | |
| echo "change set is deleted. if you would leave it, use '-c'." | |
| fi | |
| } | |
| function display_stack_url(){ | |
| message "Management console URL here." | |
| [[ -z $1 ]] && echo "arn could not find." && return | |
| local _stack_arn=$1 | |
| echo "https://${region}.console.aws.amazon.com/cloudformation/home?region=${region}#/stack/detail?stackId=${_stack_arn}" | |
| } | |
| function confirm_prompt(){ | |
| echo | |
| message "execute? (Y/n): " | |
| read answer | |
| case $answer in | |
| y|Y|yes) | |
| echo -e "tyeped yes.\n" | |
| return 0 | |
| ;; | |
| n|N|no) | |
| echo -e "tyeped no.\n" | |
| remove_local_json $json_file | |
| return 1 | |
| ;; | |
| *) | |
| echo -e "cannot understand $answer.\n" | |
| confirm_prompt | |
| ;; | |
| esac | |
| } | |
| function update_stack(){ | |
| message "creating change-set" | |
| readonly change_set=$( | |
| $aws_cfn_command create-change-set \ | |
| --change-set-name ${stack_name}-$(date "+%Y%m%d%H%M%S") \ | |
| --stack-name ${stack_name} \ | |
| --template-body file://${json_file} \ | |
| --capabilities CAPABILITY_IAM CAPABILITY_NAMED_IAM) | |
| echo ${change_set} | jq | |
| readonly stack_arn=$(echo ${change_set} | jq -r '.StackId') | |
| readonly change_set_arn=$(echo ${change_set} | jq -r '.Id') | |
| sleep 1 | |
| while true; do | |
| change_set_json=$($aws_cfn_command describe-change-set --change-set-name $change_set_arn) | |
| change_set_status=$(echo $change_set_json | jq '.Status') | |
| case $change_set_status in | |
| '"CREATE_COMPLETE"') | |
| message "describe change-set" | |
| echo ${change_set_json} | jq | |
| display_change_set_url "$change_set_arn" | |
| confirm_prompt | |
| message "update stack" | |
| $aws_cfn_command update-stack \ | |
| --stack-name "$stack_name" \ | |
| --template-body file://"$json_file" \ | |
| --capabilities CAPABILITY_IAM CAPABILITY_NAMED_IAM \ | |
| $notification_flag | |
| break;; | |
| '"FAILED"') | |
| message "describe change-set" | |
| echo ${change_set_json} | jq | |
| message "Error occured. show 'StatusReason' of change-set here." | |
| echo ${change_set_json} | jq '.StatusReason' | |
| break;; | |
| * ) | |
| sleep 1 | |
| echo "status still ${change_set_status}..." ;; | |
| esac | |
| done | |
| delete_change_set "$change_set_arn" | |
| display_stack_url "$stack_arn" | |
| } | |
| function create_stack(){ | |
| message "creation preview" | |
| cat $json_file | jq | |
| confirm_prompt | |
| message "create stack" | |
| readonly create_stack_result_json=$($aws_cfn_command create-stack \ | |
| --stack-name "$stack_name" \ | |
| --template-body file://"$json_file" \ | |
| --capabilities CAPABILITY_IAM CAPABILITY_NAMED_IAM \ | |
| $notification_flag) | |
| readonly stack_arn=$(echo $create_stack_result_json | jq -r '.StackId') | |
| echo "executed." | |
| display_stack_url "$stack_arn" | |
| } | |
| message "flake8 linting" | |
| flake8 $template_file | |
| message "converting json" | |
| python $template_file > "$json_file" | |
| message "checking json syntax" | |
| $aws_cfn_command validate-template --template-body file://"$json_file" | jq | |
| message "fetch list" | |
| readonly stacks=($($aws_cfn_command list-stacks \ | |
| --query 'StackSummaries[?StackStatus!=`DELETE_COMPLETE`]' \ | |
| | jq -r '.[].StackName')) | |
| echo ${stacks[@]} | |
| stack_exists=false | |
| for stack in "${stacks[@]}"; do | |
| [[ "$stack" == "$stack_name" ]] && stack_exists=true | |
| done | |
| set_notification | |
| if "$stack_exists"; then | |
| update_stack | |
| else | |
| create_stack | |
| fi | |
| remove_local_json $json_file |
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