run.sh

#!/bin/bash
# ============================================================
# Spring Boot Application Deployment Script
# Usage: ./run.sh [profile]
#   profile: local (default) | prod
# ============================================================

APP_NAME="demo"
JAR_FILE="build/libs/${APP_NAME}.jar"
PROFILE="${1:-local}"
LOG_DIR="./logs"
PID_FILE="${LOG_DIR}/${APP_NAME}.pid"
LOG_FILE="${LOG_DIR}/${APP_NAME}.log"
JVM_OPTS="-Xms512m -Xmx1024m -XX:+UseG1GC -Dfile.encoding=UTF-8"

# Color output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

info()  { echo -e "${GREEN}[INFO]${NC}  $1"; }
warn()  { echo -e "${YELLOW}[WARN]${NC}  $1"; }
error() { echo -e "${RED}[ERROR]${NC} $1"; }
step()  { echo -e "${BLUE}[STEP]${NC}  $1"; }

echo ""
echo "================================================"
echo "  ${APP_NAME} Deployment (profile: ${PROFILE})"
echo "================================================"

# ── 1. Create log directory ───────────────────────
mkdir -p "${LOG_DIR}"

# ── 2. Check Java ─────────────────────────────────
if ! command -v java &> /dev/null; then
    error "Java is not installed or not in PATH"
    exit 1
fi

JAVA_MAJOR=$(java -version 2>&1 | head -1 | sed 's/.*version "\([0-9]*\).*/\1/')
if [ "${JAVA_MAJOR}" -lt 17 ] 2>/dev/null; then
    error "Java 17+ required. Current: ${JAVA_MAJOR}"
    exit 1
fi
info "Java ${JAVA_MAJOR} detected."

# ── 3. Build ──────────────────────────────────────
step "Building ${APP_NAME}..."
./gradlew clean bootJar -x test --quiet

if [ $? -ne 0 ]; then
    error "Build failed!"
    exit 1
fi
info "Build successful → ${JAR_FILE}"

# ── 4. Stop existing process ──────────────────────
if [ -f "${PID_FILE}" ]; then
    OLD_PID=$(cat "${PID_FILE}")
    if ps -p "${OLD_PID}" > /dev/null 2>&1; then
        warn "Stopping existing process (PID: ${OLD_PID})..."
        kill "${OLD_PID}"
        for i in {1..15}; do
            if ! ps -p "${OLD_PID}" > /dev/null 2>&1; then
                break
            fi
            sleep 1
        done
        if ps -p "${OLD_PID}" > /dev/null 2>&1; then
            warn "Force killing (PID: ${OLD_PID})..."
            kill -9 "${OLD_PID}"
        fi
        info "Process stopped."
    fi
    rm -f "${PID_FILE}"
fi

# ── 5. Start application ──────────────────────────
step "Starting ${APP_NAME} (profile: ${PROFILE})..."

nohup java ${JVM_OPTS} \
    -jar "${JAR_FILE}" \
    --spring.profiles.active="${PROFILE}" \
    >> "${LOG_FILE}" 2>&1 &

PID=$!
echo "${PID}" > "${PID_FILE}"

# ── 6. Verify startup ─────────────────────────────
sleep 3
if ps -p "${PID}" > /dev/null 2>&1; then
    echo ""
    info "✓ ${APP_NAME} started successfully"
    info "  PID     : ${PID}"
    info "  Profile : ${PROFILE}"
    info "  Log     : ${LOG_FILE}"
    echo ""
else
    error "Failed to start ${APP_NAME}. Last 20 lines of log:"
    echo "----------------------------------------------------"
    tail -n 20 "${LOG_FILE}"
    echo "----------------------------------------------------"
    exit 1
fi