Update update.sh

update.sh

@@ -5,12 +5,33 @@ set -Eeuo pipefail
 SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
 SCRIPT_PATH="${SCRIPT_DIR}/$(basename -- "${BASH_SOURCE[0]}")"
 
+COLOR_RESET=''
+COLOR_RED=''
+COLOR_GREEN=''
+COLOR_CYAN=''
+ERROR_RESET=''
+ERROR_RED=''
+ERROR_YELLOW=''
+if [[ -z "${NO_COLOR:-}" ]]; then
+	if [[ -t 1 ]]; then
+		COLOR_RESET=$'\033[0m'
+		COLOR_RED=$'\033[1;31m'
+		COLOR_GREEN=$'\033[1;32m'
+		COLOR_CYAN=$'\033[1;36m'
+	fi
+	if [[ -t 2 ]]; then
+		ERROR_RESET=$'\033[0m'
+		ERROR_RED=$'\033[1;31m'
+		ERROR_YELLOW=$'\033[1;33m'
+	fi
+fi
+
 fail() {
-	printf 'ERROR: %s\n' "$*" >&2
+	printf '%sERROR:%s %s\n' "$ERROR_RED" "$ERROR_RESET" "$*" >&2
 	exit 1
 }
 
-trap 'printf "ERROR: broker update failed at line %d.\n" "$LINENO" >&2' ERR
+trap 'printf "%sERROR:%s broker update failed at line %d.\n" "$ERROR_RED" "$ERROR_RESET" "$LINENO" >&2' ERR
 
 cd "$SCRIPT_DIR"
 
@@ -49,13 +70,14 @@ deploy_local_broker() {
 		status="$(docker inspect --format '{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}' "$container_id")"
 		case "$status" in
 			healthy)
-				printf ' healthy.\n'
+				printf ' %shealthy%s.\n' "$COLOR_GREEN" "$COLOR_RESET"
 				docker compose ps broker
-				printf 'Local TAPM Deployment Broker update completed successfully.\n'
+				printf '%sLocal TAPM Deployment Broker update completed successfully.%s\n' \
+					"$COLOR_GREEN" "$COLOR_RESET"
 				return 0
 				;;
 			exited | dead | unhealthy)
-				printf ' %s.\n' "$status"
+				printf ' %s%s%s.\n' "$COLOR_RED" "$status" "$COLOR_RESET"
 				docker compose logs --tail=100 broker
 				fail "broker failed its health check"
 				;;
@@ -117,16 +139,19 @@ update_peer_broker() {
 		peer_host="${peer_host%"${peer_host##*[![:space:]]}"}"
 		[[ -n "$peer_host" ]] || continue
 
-		printf 'Checking peer broker at %s...\n' "$peer_host"
+		printf 'Checking peer broker at %s%s%s...\n' \
+			"$COLOR_CYAN" "$peer_host" "$COLOR_RESET"
 		if ! ssh "${ssh_options[@]}" "${ssh_user}@${peer_host}" true; then
-			printf 'WARNING: peer %s is unavailable over SSH; its update was skipped.\n' "$peer_host" >&2
+			printf '%sWARNING:%s peer %s is unavailable over SSH; its update was skipped.\n' \
+				"$ERROR_YELLOW" "$ERROR_RESET" "$peer_host" >&2
 			continue
 		fi
 		if ! ssh "${ssh_options[@]}" "${ssh_user}@${peer_host}" \
 			"TAPM_UPDATE_LOCAL_ONLY=1 ${remote_update_path} --local-only"; then
 			fail "peer ${peer_host} is reachable, but its broker update failed"
 		fi
-		printf 'Peer broker at %s completed successfully.\n' "$peer_host"
+		printf '%sSUCCESS:%s Peer broker at %s%s%s completed successfully.\n' \
+			"$COLOR_GREEN" "$COLOR_RESET" "$COLOR_CYAN" "$peer_host" "$COLOR_RESET"
 	done
 }
 
@@ -146,7 +171,8 @@ if ((POST_PULL == 0)); then
 	local_commit="$(git rev-parse HEAD)"
 	upstream_commit="$(git rev-parse '@{upstream}')"
 	if [[ "$local_commit" == "$upstream_commit" ]]; then
-		printf 'Local TAPM Deployment Broker is already up to date.\n'
+		printf '%sLocal TAPM Deployment Broker is already up to date.%s\n' \
+			"$COLOR_GREEN" "$COLOR_RESET"
 	elif git merge-base --is-ancestor "$local_commit" "$upstream_commit"; then
 		printf 'Updating TAPM Deployment Broker from %s...\n' "$upstream"
 		git merge --quiet --ff-only "$upstream_commit"
@@ -169,4 +195,5 @@ if ((LOCAL_ONLY == 0)); then
 	update_peer_broker
 fi
 
-printf 'TAPM Deployment Broker update check completed.\n'
+printf '%sTAPM Deployment Broker update check completed.%s\n' \
+	"$COLOR_GREEN" "$COLOR_RESET"