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2026-07-26 11:39:21 +05:30

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#!/usr/bin/env bash
#
# rollback.sh — Roll back to the previously deployed commit.
#
# Usage:
# rollback.sh # roll back to .last-deployed-sha
# rollback.sh <sha> # roll back to a specific commit
#
# .env is gitignored and is never touched by git operations. It survives
# updates and rollbacks unchanged.
#
# Must be run as root (uses runuser to build as the service user).
set -euo pipefail
INSTALL_DIR="${ZOPU_INSTALL_DIR:-/opt/zopu}"
SERVICE_USER="${ZOPU_SERVICE_USER:-zopu}"
GREEN='\033[0;32m'
RED='\033[0;31m'
NC='\033[0m'
log() { echo -e "${GREEN}[rollback]${NC} $*"; }
err() { echo -e "${RED}[rollback]${NC} $*" >&2; }
run_as_service() {
runuser -u "$SERVICE_USER" -- "$@"
}
cd "$INSTALL_DIR"
# Determine target
ROLLBACK_SHA="${1:-}"
if [[ -z "$ROLLBACK_SHA" ]]; then
LAST_SHA_FILE="${INSTALL_DIR}/.last-deployed-sha"
if [[ ! -f "$LAST_SHA_FILE" ]]; then
err "No previous deployment recorded in ${LAST_SHA_FILE}."
err "Pass a commit SHA explicitly: rollback.sh <sha>"
exit 1
fi
ROLLBACK_SHA=$(cat "$LAST_SHA_FILE")
fi
# Validate commit exists
if ! git rev-parse --verify "${ROLLBACK_SHA}^{commit}" &>/dev/null; then
err "Commit ${ROLLBACK_SHA} does not exist in the local repository."
exit 1
fi
CURRENT_SHA=$(git rev-parse HEAD)
log "Current: ${CURRENT_SHA:0:12}"
log "Rolling back to: ${ROLLBACK_SHA:0:12}"
# Save current state before rolling back (enables re-rollback)
echo "$CURRENT_SHA" > "${INSTALL_DIR}/.pre-rollback-sha"
# Checkout target
git checkout "$ROLLBACK_SHA"
# Restore ownership of the checkout to the service user after git operations
log "Setting ownership of checkout to $SERVICE_USER..."
chown -R "$SERVICE_USER":"$SERVICE_USER" "$INSTALL_DIR"
# Confirm .env is intact and has correct permissions
if [[ -f "${INSTALL_DIR}/.env" ]]; then
log ".env preserved."
chmod 600 "${INSTALL_DIR}/.env"
else
err ".env is missing! Restore it from backup before starting services."
fi
log "Running bun install..."
run_as_service bun install
log "Building web app..."
run_as_service bun run --cwd apps/web build
log "Validating daemon production build..."
run_as_service bun run build:daemon
log "Building agent service..."
run_as_service bun run build:agents
log "Restarting services..."
systemctl restart zopu-daemon
sleep 3
systemctl restart zopu-agent
systemctl restart zopu-web
sleep 5
# Health check
HEALTH_SCRIPT="${INSTALL_DIR}/deploy/zopu-runtime/scripts/health-check.sh"
if [[ -x "$HEALTH_SCRIPT" ]]; then
log "Running health check..."
if "$HEALTH_SCRIPT"; then
log "Rollback complete and healthy."
else
err "Health check failed after rollback!"
err " journalctl -u zopu-daemon -n 50"
err " journalctl -u zopu-agent -n 50"
err " journalctl -u zopu-web -n 50"
exit 1
fi
fi