[Unit]
Description=Agricultural Stock Spark Data Processor Scheduler
Documentation=https://github.com/your-repo/agricultural-stock-platform
After=network.target mysql.service

[Service]
Type=simple
User=spark
Group=spark
WorkingDirectory=/opt/agricultural-stock-platform/spark-processor
ExecStart=/usr/bin/java -Xmx4g -Xms2g -XX:+UseG1GC -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -Dlogback.configurationFile=src/main/resources/logback.xml -Dconfig.file=src/main/resources/application-prod.conf -jar target/spark-data-processor-1.0.0.jar scheduler
ExecStop=/bin/kill -TERM $MAINPID
Restart=on-failure
RestartSec=30
StandardOutput=journal
StandardError=journal
SyslogIdentifier=spark-scheduler

# 环境变量
Environment=JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
Environment=SPARK_HOME=/opt/spark
Environment=PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

# 资源限制
LimitNOFILE=65536
LimitNPROC=4096

# 安全设置
NoNewPrivileges=true
PrivateTmp=true
ProtectSystem=strict
ProtectHome=true
ReadWritePaths=/opt/agricultural-stock-platform/spark-processor/logs
ReadWritePaths=/tmp/spark-warehouse

[Install]
WantedBy=multi-user.target