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September 11, 2017 00:13
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Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,209 @@ set -o pipefail _exit_error() { message=$1 code=$2 echo "$message" >&2 exit $code } _exit_ok() { message=$1 echo "$message" exit 0 } get-stack-state() { local stack_name=$1 local region=$2 local stack_state stack_state=$(aws cloudformation describe-stacks --region $region \ --stack-name $stack_name \ --query "Stacks[0].StackStatus" \ --output text 2>&1) retcode="$?" if <<<"${stack_state}" grep -q "does not exist"; then _exit_ok DOES_NOT_EXIST fi if [ $retcode -ne 0 ]; then _exit_error "$stack_state" $retcode fi _exit_ok "$stack_state" } get-stack-action() { local stack_state=$1 local stack_action case $stack_state in *_IN_PROGRESS) # busy _exit_error "Stack is currently in $stack_state state and cannot be updated" 127 ;; *_FAILED) # errored _exit_error "Stack is currently in $stack_state state and cannot be updated" 127 ;; ROLLBACK_COMPLETE) # ok stack_action="delete-then-create" ;; *_COMPLETE) # ok stack_action="update" ;; DOES_NOT_EXIST) # nope stack_action="create" ;; *) # unknown ;; esac echo "$stack_action" } upsert-stack() { local stack_required_action=$1 local stack_name=$2 local stack_template=$3 local region=$4 local upsert_result local retcode echo "Attempting to $stack_required_action stack: $stack_name..." >&2 upsert_result=$(aws cloudformation ${stack_required_action}-stack --region $region \ --capabilities CAPABILITY_IAM CAPABILITY_NAMED_IAM \ --stack-name $stack_name \ --template-body file://./cloudformation/$stack_template.yml \ --parameters file://./cloudformation/.tmp/cloudformation_parameters-$stack_template.json \ --query StackId \ --output text 2>&1) retcode="$?" if <<<"${upsert_result}" grep -q "No updates are to be performed"; then _exit_ok "No updates are to be performed" fi if [ $retcode -ne 0 ]; then _exit_error "$upsert_result" $retcode fi echo "$upsert_result" } tail_stack() { local stack_name=$1 local region=$2 local current local final_line local output local output_result local previous local stack_events local now=$(date -u +"%Y-%m-%dT%H:%M:%SZ") local headings="| Time | Resource | Status | Message |" local markline="+--------------+--------------------------------+--------------------------------+--------------------------------------------------------------+" local header="$markline\n$headings\n$markline\n" local colour_reset='\033[0m' local colour_red='\033[31m' local colour_green='\033[32m' local colour_yellow='\033[33m' local colour_blue='\033[34m' local colour_magenta='\033[35m' local colour_cyan='\033[36m' local colour_white='\033[97m' while true; do stack_events=$(aws cloudformation describe-stack-events --region $region \ --stack-name $stack_name \ --output text \ --query "sort_by(StackEvents, &Timestamp)[?Timestamp>='$now'].[ Timestamp, LogicalResourceId, ResourceStatus, ResourceStatusReason, ResourceType ]" 2>&1) retcode="$?" echo "$stack_events" | egrep -q "does not exist" && break if [ $retcode -ne 0 ]; then _exit_error "$stack_events" $retcode fi if [ -z "$stack_events" ]; then sleep 1 continue fi stack_events_table=$( while IFS=$'\t' read timestamp resource status message rtype; do # ResourceType (rtype) not used, included for completeness printf "| %b%-12s%b | %b%-30s%b | %b%-30s%b | %b%-60s%b |\n" \ "$colour_green" "${timestamp:11:8} UTC" "$colour_reset" \ "$colour_red" "$(echo $resource | awk -v len=30 '{ if(length($0)>len) print "…" substr($0,length($0)-len+2,length($0)); else print;}')" "$colour_reset" \ "$colour_cyan" "$(echo $status | awk -v len=30 '{ if(length($0)>len) print "…" substr($0,length($0)-len+2,length($0)); else print;}')" "$colour_reset" \ "$colour_blue" "$(echo $message | awk -v len=60 '{ if(length($0)>len) print "…" substr($0,length($0)-len+2,length($0)); else print;}')" "$colour_reset" done <<< "$stack_events" ) current=$(echo -e "$header$stack_events_table") if [ -z "$previous" ]; then echo "$current" elif [ "$current" != "$previous" ]; then comm -13 <(echo "$previous") <(echo "$current") fi previous="$current" stack_state=$(aws cloudformation describe-stacks --region $region \ --stack-name $stack_name \ --query "Stacks[0].StackStatus" \ --output text 2>&1) retcode="$?" echo "$stack_state" | egrep -q ".*_(COMPLETE|FAILED)$" && break [ $retcode -ne 0 ] && break sleep 1 done echo $markline } deploy_stack() { local application=$1 local environment=$2 local stack_template=$3 local region=$4 local stack_name local stack_required_action stack_name=$(echo "$application-$environment-$stack_template" | tr '_' '-') echo "Checking state of stack: $stack_name..." stack_state=$(get-stack-state $stack_name $region) || exit $? stack_action=$(get-stack-action $stack_state) || exit $? if [[ $stack_action == "delete-then-create" ]]; then echo "Stack exists in non-updatable state. Deleting..." >&2 drop_stack $application $environment $stack_template $region stack_action="create" fi upsert_result=$(upsert-stack $stack_action $stack_name $stack_template $region) || exit $? if <<<"${upsert_result}" grep -q "No updates are to be performed"; then _exit_ok "$upsert_result" fi echo "Stack with id $upsert_result is being ${stack_action}d" tail_stack $stack_name $region } delete-stack() { local stack_name=$1 local region=$2 local delete_result local retcode echo "Attempting to delete stack: $stack_name..." >&2 delete_result=$(aws cloudformation delete-stack --stack-name $stack_name --region $region 2>&1) retcode="$?" if [ $retcode -ne 0 ]; then _exit_error "$delete_result" $retcode fi # delete_result is empty if there is no error, so no return here } drop_stack() { local environment=$1 local application=$2 local stack_template=$3 local region=$4 local stack_name local stack_required_action stack_name=$(echo "$environment-$application-$stack_template" | tr '_' '-') echo "Checking state of stack: $stack_name..." stack_state=$(get-stack-state $stack_name $region) || exit $? if <<<"${stack_state}" egrep -q "DOES_NOT_EXIST"; then _exit_error "The stack $stack_name does not exist" fi delete_result=$(delete-stack $stack_name $region) || exit $? tail_stack $stack_name $region }