centos7--制作java微服务为系统服务!

背景

     公司项目使用java构建,服务器使用linux--centos7,项目中使用了众多微服务快速成型,随着时间推移,xxx.jar 每次通过命令启动比较繁琐,本着轻松懒的方式,将这些服务通通制作成系统级别的服务,也就是"systemctl start service_name" ,本人使用python语言,通过python批量制作所有java服务

代码

#coding:utf-8
#author:fei
#date:2020-5-26


import os
import sys
import subprocess

class JavaSystemServices(object):
    def __init__(self, params):
        self.__dict__.update(params) if params else None
        self.config = dict(self.__dict__)
        self.system_service_path = "/usr/lib/systemd/system"

        if self.config and len(self.config) is 5:
            self.service_name = self.config.get("service_name", "")
            self.platform_name = self.config.get("platform_name", "")
            self.sh_path = self.config.get("sh_path", "")
            self.java_path = self.config.get("java_path", "")
            self.java_run_command = self.config.get("java_run_command", "")
        else:
            sys.exit("not args or not enough kwargs")

    def service_pre_start(self):
        command = "systemctl start {}.service".format(self.service_name)
        try:
            subprocess.check_call(command, shell=True)
            status = True
        except Exception:
            status = False
        return status

    def run(self):
        if self.service_pre_start():
            print "{}启动成功".format(self.service_name)
        else:
            try:
                self.create_service()
                self.create_sh()
                os.system("systemctl daemon-reload")
                os.system("systemctl enable {}.service".format(self.service_name))
                print "{} 服务创建成功,请测试!!!".format(self.service_name)
            except Exception as e:
                print e

    def create_service(self):

        full_path = os.path.join(self.system_service_path, "{}.service".format(self.service_name))

        with open(full_path, 'w') as f:
            f.write("#!/bin/sh

")
            f.write("[Unit]
")
            f.write("Description={}-service {}
".format(self.platform_name, self.service_name))
            f.write("After=syslog.target network.target remote-fs.target nss-lookup.target

")
            f.write("[Service]
")
            f.write("Type=forking
")
            f.write("ExecStart={}/{}-service/{}/{}-start.sh
".format(self.sh_path, self.platform_name, self.service_name,self.service_name))
            f.write("ExecStop={}/{}-service/{}/{}-stop.sh
".format(self.sh_path, self.platform_name, self.service_name,self.service_name))
            f.write("PrivateTmp=true

")
            f.write("[Install]
")
            f.write("WantedBy=multi-user.target")

    def create_sh(self):
        if not os.path.exists(self.sh_path):
            os.makedirs(self.sh_path)
        sh_full_path = os.path.join(self.sh_path, "{}-service".format(self.platform_name), self.service_name)
        if not os.path.exists(sh_full_path):
            os.chdir(self.sh_path)
            os.makedirs("{}/{}-service/{}".format(self.sh_path,self.platform_name,self.service_name))

        start_sh_path = os.path.join(sh_full_path, "{}-start.sh".format(self.service_name))
        stop_sh_path = os.path.join(sh_full_path, "{}-stop.sh".format(self.service_name))
        service_pid_path = os.path.join(sh_full_path, "{}-service.pid".format(self.service_name))
        with open(start_sh_path, "w") as f:
            f.write("#!/bin/sh

")
            f.write("export JAVA_HOME={}
".format(self.java_path))
            f.write("export PATH=$JAVA_HOME/bin:$PATH

")
            f.write(self.java_run_command + "
")

        with open(stop_sh_path, "w") as f:
            f.write("#!/bin/sh

")
            f.write("PID=$(cat {})
".format(service_pid_path))
            f.write("kill -9 $PID")

        with open(service_pid_path,"w") as f:
            pass

        os.system("chmod +x {}".format(start_sh_path))
        os.system("chmod +x {}".format(stop_sh_path))

def yilian_main(java_path):
    java_services_info = [
        {
            "service_name": "config-manager",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -Dnutz.boot.configure.properties.dir=/opt/jar/configmanager/manager -Dnutz.profiles.active=pro -jar /opt/jar/configmanager/configmanager.jar> /dev/null 2>&1 &"
        },
        {
            "service_name": "gateway-api",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -jar -Xms1024m -Xmx1024m  -Dspring.config.location=/opt/jar/gateway-api/application-gateway-api.yml /opt/jar/gateway-api/gateway-api-server.jar >/dev/null 2>&1 &"
        },
        {

            "service_name": "realtime-dataview",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -jar -Xms900m -Xmx900m -Dspring.config.location=/opt/jar/realtime-dataview/application-dataview.properties /opt/jar/realtime-dataview/realtime-dataview.jar >/dev/null 2>&1 &"
        },
        {

            "service_name": "realtime",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -jar -Xms1024m -Xmx1024m -Dspring.config.location=/opt/jar/realtime/application-realtime.properties  /opt/jar/realtime/realtime.jar >/dev/null 2>&1 &"
        },
        {
            "service_name": "login",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -jar -Xms900m -Xmx900m -Dspring.config.location=/opt/jar/login/application-login.properties /opt/jar/login/login.jar>/dev/null 2>&1 &"
        },
        {
            "service_name": "alert-strategy",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -jar -Xms1024m -Xmx1024m -Dspring.config.location=/opt/jar/alertStrategy/application-strategy.yaml  /opt/jar/alertStrategy/alertstrategy.jar >/dev/null 2>&1 &",
        },
        {
            "service_name": "alert-pusher",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -jar -Xms1024m -Xmx1024m -Dspring.config.location=/opt/jar/alertPusher/application-pusher.yaml  /opt/jar/alertPusher/alertpusher.jar  >/dev/null 2>&1 &",
        },
        {
            "service_name": "alert-engine",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -jar -Xms1024m -Xmx1024m -Dspring.config.location=/opt/jar/alertEngine/application-engine.yaml  /opt/jar/alertEngine/alertengine.jar >/dev/null 2>&1 &"
        },
        {

            "service_name": "background",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -jar -Xms1024m -Xmx1024m -Dspring.config.location=/opt/jar/background/application-background-interface.yaml  /opt/jar/background/background.jar>/dev/null 2>&1 &"
        },
        {

            "service_name": "realtime",
            "platform_name": "yilian",
            "sh_path": "/usr/local/apps",
            "java_path": java_path,
            "java_run_command": "nohup java -jar -Xms1024m -Xmx1024m -Dspring.config.location=/opt/jar/realtime/application-realtime.properties  /opt/jar/realtime/realtime.jar >/dev/null 2>&1 &"
        },
    ]
    return java_services_info

if __name__ == '__main__':
    sh_path = "/usr/local/apps"
    test_server8_java_path = "usr/local/java"         # 172.16.16.8测试服务器 java 安装环境
    cloud_server_java_path = "usr/lib/jvm/java"       # 公有云服务器 java 安装环境
    guowang_test_java_path = "/usr/local/java/jdk1.8" # 私有云 java 安装环境

    for item in yilian_main(guowang_test_java_path):
        jss = JavaSystemServices(item)
        jss.run()