chaconne(音译夏空),是一款用Java写的,基于SpringBoot框架的轻量级的分布式任务调度框架。引入chaconne相关组件,可以非常快捷地帮助你搭建一个分布式任务集群
chaconne 特性列表
- 完美支持spring-boot框架(2.2.0+)
- 支持多种方式设置的定时任务(Cron表达式,参数设置等)
- 支持动态保存和删除任务
- 支持注解配置定时任务
- 支持两种集群模式(主备模式和负载均衡模式)
- 内置多种负载均衡算法,支持自定义负载均衡算法
- 支持失败重试和失败转移
- 支持日志追踪
- 支持任务参数分片处理
- 支持任务依赖(串行依赖和并行依赖)
- 支持DAG模拟工作流
- 支持任务自定义终止策略
- 支持任务超时冷却和重置
- 支持邮件告警
chaconne两种集群部署模式:
去中心化部署模式
- 没有固定的调度中心节点,chaconne集群会选举其中一个应用作为Leader, 进行任务指挥调度
- 参与调度和参与执行的应用通过Tcp协议交互
中心化部署模式
- 分为调度中心和任务执行节点两个角色,且调度中心和任务执行节点都支持集群模式
- 调度中心和任务执行节点通过Http协议交互
说明:
这里的集群是指参与任务执行的应用所组成的集群(chaconne集群),它和基于SpringCloud框架组成的集群是两个独立的概念
如果chaconne集群规模较小,推荐使用去中心化部署模式,若该集群规模较大,依据实际情况,两者模式都可以使用。
chaconne框架由两部分组成:
- chaconne-spring-boot-starter
核心jar包,包含了chaconne全部核心功能(包括自定义你的Web管理界面) - chaconne-console
Chaconne Web管理界面,进行任务管理和查看任务运行状态 - chaconne-manager
如果是中心化部署,这里提供了个chaconne的调度中心demo
安装:
<dependency>
<groupId>com.github.paganini2008.atlantis</groupId>
<artifactId>chaconne-spring-boot-starter</artifactId>
<version>1.0-RC2</version>
</dependency>
兼容性:
- Jdk 1.8 (or later)
- SpringBoot 2.2.0 (or later)
- Redis 3.0 (or later)
- MySQL 5.0 (or later)
说明:
Redis用于存取集群信息和做消息广播
MySQL用于存取任务定义和运行时相关数据,目前只支持MySQL, 关于表结构,应用程序启动时自动建表
必要的配置:
spring.application.cluster.name=jobtester-cluster # set chaconne cluster name
spring.application.name=jobtester
#Jdbc Configuration
spring.datasource.jdbcUrl=jdbc:mysql://localhost:3306/demo?userUnicode=true&serverTimezone=Asia/Shanghai&characterEncoding=UTF8&useSSL=false&autoReconnect=true&zeroDateTimeBehavior=convertToNull
spring.datasource.username=fengy
spring.datasource.password=123456
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
#Redis Configuration
spring.redis.host=localhost
spring.redis.port=6379
spring.redis.password=123456
spring.redis.dbIndex=0
chaconne实现原理简述
chaconne的底层是依赖tridenter-spring-boot-starter组件来实现任务集群模式的(主备模式和负载均衡模式),利用消息单播机制(通过Redis PubSub模拟)来实现任务分发和负载均衡,分片处理等高级特性。需要指出的是,chaconne框架中关于集群的定义和tridenter关于集群的定义是一致的,对于集群的概念,等同于用来区别不同的产品组或公司,同时chaconne也支持任务组的概念,它是可选配置,默认情况下,组名就是当前应用名称(${spring.application.name}),即当起了多个相同应用名的应用,那这些应用就成为了一个任务组。chaconne不仅支持跨组的任务调用,更支持跨集群的任务调用。
如何定义任务?
- 使用注解@ChacJob
- 继承ManagedJob类
- 实现Job接口
- 实现NotManagedJob接口
说明: - 前3种定义任务的方式属于声明式(编程式)定义任务,即通过代码方式定义一个任务,随之Spring框架上下文的启动而自动加载
- 第4种定义的方式用来定义动态任务,用户可以在Web界面上(Chaconne-Console)提交来创建任务或直接通过调用Http API/SDK来创建任务,需要说明的是,通过该方式创建的任务对象不属于Spring上下文托管的Bean对象。
示例代码:
1. 用注解方式创建任务
@ChacJob
@ChacTrigger(cron = "*/5 * * * * ?")
public class DemoCronJob {
@Run
public Object execute(JobKey jobKey, Object attachment, Logger log) throws Exception {
log.info("DemoCronJob is running at: {}", DateUtils.format(System.currentTimeMillis()));
return RandomUtils.randomLong(1000000L, 1000000000L);
}
@OnSuccess
public void onSuccess(JobKey jobKey, Object result, Logger log) {
log.info("DemoCronJob's return value is: {}", result);
}
@OnFailure
public void onFailure(JobKey jobKey, Throwable e, Logger log) {
log.error("DemoCronJob is failed by cause: {}", e.getMessage(), e);
}
}
2. 接口方式创建任务
实现Job接口:
@Component public class HelloWorldJob implements Job { @Override public String getClusterName() { return "your_cluster_name"; } @Override public String getGroupName() { return "your_group_name"; } @Override public int getRetries() { return 3; } @Override public long getTimeout() { return 60 * 1000L; } @Override public String getEmail() { return "your_email@helloworld.com"; } @Override public Trigger getTrigger() { return GenericTrigger.Builder.newTrigger(1L, SchedulingUnit.MINUTES, false).build(); } @Override public Object execute(JobKey jobKey, Object result, Logger logger) { return "Hello World!"; } @Override public void onSuccess(JobKey jobKey, Object result, Logger log) { if (log.isInfoEnabled()) { log.info(result.toString()); } } }
或继承ManagedJob类:
@Component public class HealthCheckJob extends ManagedJob { @Override public long getTimeout() { return 60L * 1000; } @Override public Trigger getTrigger() { return GenericTrigger.Builder.newTrigger("*/5 * * * * ?").setStartDate(DateUtils.addSeconds(new Date(), 30)).build(); } @Override public Object execute(JobKey jobKey, Object arg, Logger log) { if (log.isInfoEnabled()) { log.info(info()); } return UUID.randomUUID().toString(); } @Override public void onSuccess(JobKey jobKey, Object result, Logger log) { if (log.isInfoEnabled()) { log.info(result.toString()); } } private String info() { long totalMemory = Runtime.getRuntime().totalMemory(); long usedMemory = totalMemory - Runtime.getRuntime().freeMemory(); return FileUtils.formatSize(usedMemory) + "/" + FileUtils.formatSize(totalMemory); } }
如何动态任务?
第一种方式:在页面上创建(后面会讲到)
略
第二种方式:通过SDK创建首先实现NotManagedJob 接口定义任务
public class EtlJob implements NotManagedJob { @Override public Object execute(JobKey jobKey, Object attachment, Logger log) { log.info("JobKey:{}, Parameter: {}", jobKey, attachment); return null; } }
使用Http API调用的方式
POST http://localhost:6543/job/adm...{ "jobKey": { "clusterName": "yourCluster", "groupName": "yourGroup", "jobName": "yourJob", "jobClassName": "com.yourcompany.yourapp.YourJob" }, "description": "Describe your job shortly", "email": "YourEmail@yourcompany.com", "retries": 0, "timeout": -1, "weight": 100, "dependentKeys": null, "forkKeys": null, "completionRate": -1, "trigger": { "triggerType": 1, "triggerDescription": { "cron": { "expression": "*/5 * * * * ?" } }, "startDate": null, "endDate": null, "repeatCount": -1 }, "attachment": "{\"initialParameter\": \"test\"}" }
或者使用SDK:
@Component public class TestService { @Autowired private JobManager jobManager; public void createJob() throws Exception { final JobKey jobKey = JobKey.by("yourCluster", "yourGroup", "yourJob", "com.yourcompany.yourapp.YourJob"); GenericJobDefinition.Builder builder = GenericJobDefinition.newJob(jobKey) .setDescription("Describe your job shortly") .setEmail("YourEmail@yourcompany.com") .setRetries(3) .setTimeout(60000L); GenericTrigger.Builder triggerBuilder = GenericTrigger.Builder.newTrigger("*/5 * * * * ?"); builder.setTrigger(triggerBuilder.build()); GenericJobDefinition jobDefinition = builder.build(); jobManager.persistJob(jobDefinition, "{\"initialParameter\": \"test\"}"); } }
注意: 任务初始化参数建议是json格式的
任务依赖
任务依赖是chaconne框架的重要特性之一,任务依赖分为串行依赖和并行依赖,
所谓串行依赖是指任务A做完接着执行任务B, 即任务B依赖任务A。
并行依赖是指,比如有3个任务,分别为任务A, 任务B, 任务C, 任务A和任务B都做完才能执行任务C, 类似会签的业务场景。
串行依赖和并行依赖都可以共享任务上下文参数和运行结果,并且支持自定义判断策略来决定要不要触发下游任务。
DAG(有向无环图)
而在结合串行依赖和并行依赖的基础上,chaconne框架又提供了DAG功能并提供了友好的API,来模拟类似工作流的业务场景,更加丰富了任务依赖的使用场景。
(这里为了方便举例,都通过注解的方式配置任务)
串行依赖示例:
@ChacJob
@ChacTrigger(triggerType = TriggerType.DEPENDENT)
@ChacDependency({ @ChacJobKey(className = "com.chinapex.test.chaconne.job.DemoSchedJob", name = "demoSchedJob") })
public class DemoDependentJob {
@Run
public Object execute(JobKey jobKey, Object attachment, Logger log) throws Exception {
log.info("DemoDependentJob is running at: {}", DateUtils.format(System.currentTimeMillis()));
return RandomUtils.randomLong(1000000L, 1000000000L);
}
@OnSuccess
public void onSuccess(JobKey jobKey, Object result, Logger log) {
log.info("DemoDependentJob's return value is: {}", result);
}
@OnFailure
public void onFailure(JobKey jobKey, Throwable e, Logger log) {
log.error("DemoDependentJob is failed by cause: {}", e.getMessage(), e);
}
}
并行依赖示例:
有3个任务,DemoTask, DemoTaskOne, DemoTaskTwo
让DemoTaskOne, DemoTaskTwo都做完再执行DemoTask,且DemoTask可以获得DemoTaskOne, DemoTaskTwo执行后的值
DemoTaskOne:
@ChacJob
@ChacTrigger(triggerType = TriggerType.SIMPLE)
public class DemoTaskOne {
@Run
public Object execute(JobKey jobKey, Object attachment, Logger log) throws Exception {
log.info("DemoTaskOne is running at: {}", DateUtils.format(System.currentTimeMillis()));
return RandomUtils.randomLong(1000000L, 1000000000L);
}
@OnSuccess
public void onSuccess(JobKey jobKey, Object result, Logger log) {
log.info("DemoTaskOne return value is: {}", result);
}
@OnFailure
public void onFailure(JobKey jobKey, Throwable e, Logger log) {
log.error("DemoTaskOne is failed by cause: {}", e.getMessage(), e);
}
}
DemoTaskTwo:
@ChacJob
@ChacTrigger(triggerType = TriggerType.SIMPLE)
public class DemoTaskTwo {
@Run
public Object execute(JobKey jobKey, Object attachment, Logger log) throws Exception {
log.info("DemoTaskTwo is running at: {}", DateUtils.format(System.currentTimeMillis()));
return RandomUtils.randomLong(1000000L, 1000000000L);
}
@OnSuccess
public void onSuccess(JobKey jobKey, Object result, Logger log) {
log.info("DemoTaskTwo return value is: {}", result);
}
@OnFailure
public void onFailure(JobKey jobKey, Throwable e, Logger log) {
log.error("DemoTaskTwo is failed by cause: {}", e.getMessage(), e);
}
}
DemoTask:
@ChacJob
@ChacTrigger(cron = "0 0/1 * * * ?", triggerType = TriggerType.CRON)
@ChacFork({ @ChacJobKey(className = "com.chinapex.test.chaconne.job.DemoTaskOne", name = "demoTaskOne"),
@ChacJobKey(className = "com.chinapex.test.chaconne.job.DemoTaskTwo", name = "demoTaskTwo") })
public class DemoTask {
@Run
public Object execute(JobKey jobKey, Object attachment, Logger log) throws Exception {
log.info("DemoTask is running at: {}", DateUtils.format(System.currentTimeMillis()));
TaskJoinResult joinResult = (TaskJoinResult) attachment;
TaskForkResult[] forkResults = joinResult.getTaskForkResults();
long max = 0;
for (TaskForkResult forkResult : forkResults) {
max = Long.max(max, (Long) forkResult.getResult());
}
return max;
}
@OnSuccess
public void onSuccess(JobKey jobKey, Object result, Logger log) {
log.info("DemoTask return max value is: {}", result);
}
@OnFailure
public void onFailure(JobKey jobKey, Throwable e, Logger log) {
log.error("DemoTask is failed by cause: {}", e.getMessage(), e);
}
}
DAG任务示例
DAG任务目前只支持API创建, 后续会持续改进,增加界面方式创建DAG任务
@RequestMapping("/dag")
@RestController
public class DagJobController {
@Value("${spring.application.cluster.name}")
private String clusterName;
@Value("${spring.application.name}")
private String applicationName;
@Autowired
private JobManager jobManager;
@GetMapping("/create")
public Map<String, Object> createDagTask() throws Exception {
Dag dag = new Dag(clusterName, applicationName, "testDag");// 创建一个Dag任务,并指定集群名,应用名,和任务名称
dag.setTrigger(new CronTrigger("0 0/1 * * * ?"));// 设置Cron表达式
dag.setDescription("This is only a demo of dag job");// 任务描述
DagFlow first = dag.startWith(clusterName, applicationName, "demoDagStart", DemoDagStart.class.getName());// 定义第一个节点
DagFlow second = first.flow(clusterName, applicationName, "demoDag", DemoDag.class.getName());// 定义第二个节点
// 第二个节点fork两个子进程处理
second.fork(clusterName, applicationName, "demoDagOne", DemoDagOne.class.getName());
second.fork(clusterName, applicationName, "demoDagTwo", DemoDagTwo.class.getName());
jobManager.persistJob(dag, "123");
return Collections.singletonMap("ok", 1);
}
}
上面的DAG示例说明一下,chaconne框架提供的DAG模型支持串行流入,即flow模式,也提供了fork模式进行并行处理,上例中,任务demoDag fork了两个子进程(“demoDagOne”和“demoDagTwo”),即demoDagOne和demoDagTwo同时处理完了再触发demoDag任务。
Chaconne部署说明
chaconne除了依托SpringBoot框架外,默认用MySQL存储任务信息(目前仅支持MySQL,后续会支持更多类型的数据库), 用Redis保存集群元数据和进行消息广播。
所以无论使用哪种部署方式,你都需要在你的应用中设置DataSource和RedisConnectionFactory
示例代码:
@Slf4j
@Configuration
public class ResourceConfig {
@Setter
@Configuration(proxyBeanMethods = false)
@ConfigurationProperties(prefix = "spring.datasource")
@ConditionalOnMissingBean(DataSource.class)
public static class DataSourceConfig {
private String jdbcUrl;
private String username;
private String password;
private String driverClassName;
private HikariConfig getDbConfig() {
if (log.isTraceEnabled()) {
log.trace("DataSourceConfig JdbcUrl: " + jdbcUrl);
log.trace("DataSourceConfig Username: " + username);
log.trace("DataSourceConfig Password: " + password);
log.trace("DataSourceConfig DriverClassName: " + driverClassName);
}
final HikariConfig config = new HikariConfig();
config.setDriverClassName(driverClassName);
config.setJdbcUrl(jdbcUrl);
config.setUsername(username);
config.setPassword(password);
config.setMinimumIdle(5);
config.setMaximumPoolSize(50);
config.setMaxLifetime(60 * 1000);
config.setIdleTimeout(60 * 1000);
config.setValidationTimeout(3000);
config.setReadOnly(false);
config.setConnectionInitSql("SELECT UUID()");
config.setConnectionTestQuery("SELECT 1");
config.setConnectionTimeout(60 * 1000);
config.setTransactionIsolation("TRANSACTION_READ_COMMITTED");
config.addDataSourceProperty("cachePrepStmts", "true");
config.addDataSourceProperty("prepStmtCacheSize", "250");
config.addDataSourceProperty("prepStmtCacheSqlLimit", "2048");
return config;
}
@Primary
@Bean
public DataSource dataSource() {
return new HikariDataSource(getDbConfig());
}
}
@Setter
@Configuration(proxyBeanMethods = false)
@ConfigurationProperties(prefix = "spring.redis")
@ConditionalOnMissingBean(RedisConnectionFactory.class)
public static class RedisConfig {
private String host;
private String password;
private int port;
private int dbIndex;
@Bean
public RedisConnectionFactory redisConnectionFactory() {
RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
redisStandaloneConfiguration.setHostName(host);
redisStandaloneConfiguration.setPort(port);
redisStandaloneConfiguration.setDatabase(dbIndex);
redisStandaloneConfiguration.setPassword(RedisPassword.of(password));
JedisClientConfiguration.JedisClientConfigurationBuilder jedisClientConfiguration = JedisClientConfiguration.builder();
jedisClientConfiguration.connectTimeout(Duration.ofMillis(60000)).readTimeout(Duration.ofMillis(60000)).usePooling()
.poolConfig(jedisPoolConfig());
JedisConnectionFactory factory = new JedisConnectionFactory(redisStandaloneConfiguration, jedisClientConfiguration.build());
return factory;
}
@Bean
public JedisPoolConfig jedisPoolConfig() {
JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
jedisPoolConfig.setMinIdle(1);
jedisPoolConfig.setMaxIdle(10);
jedisPoolConfig.setMaxTotal(200);
jedisPoolConfig.setMaxWaitMillis(-1);
jedisPoolConfig.setTestWhileIdle(true);
return jedisPoolConfig;
}
}
}
你也可以自定义DataSource和RedisConnectionFactory
Chaconne去中心化部署
在你的Spring应用程序的主函数上加上@EnableChaconneEmbeddedMode注解,然后启动
示例代码:
@EnableChaconneEmbeddedMode
@SpringBootApplication
@ComponentScan
public class YourApplicationMain {
public static void main(String[] args) {
final int port = 8088;
System.setProperty("server.port", String.valueOf(port));
SpringApplication.run(YourApplicationMain.class, args);
}
}
Chaconne中心化部署
启动调度中心,这需要你新建一个SpringBoot项目,在主函数上加上@EnableChaconneDetachedMode注解,并指定为生产端
示例代码:@EnableChaconneDetachedMode(DetachedMode.PRODUCER) @SpringBootApplication public class ChaconneManagementMain { public static void main(String[] args) { SpringApplication.run(ChaconneManagementMain.class, args); } }
(同时需要配置DataSource和RedisConnectionFactory)
或者直接使用注解@ChaconneAdmin即可,示例代码:
@ChaconneAdmin @SpringBootApplication public class ChaconneManagerApplication { static { System.setProperty("spring.devtools.restart.enabled", "false"); File logDir = FileUtils.getFile(FileUtils.getUserDirectory(), "logs", "indi", "atlantis", "framework", "chaconne", "management"); if (!logDir.exists()) { logDir.mkdirs(); } System.setProperty("LOG_BASE", logDir.getAbsolutePath()); } public static void main(String[] args) { SpringApplication.run(ChaconneManagerApplication.class, args); System.out.println(Env.getPid()); } }
在你的Spring应用程序的主函数上加上@EnableChaconneDetachedMode注解(默认为消费端),然后启动
@EnableChaconneDetachedMode @SpringBootApplication @ComponentScan public class YourApplicationMain { public static void main(String[] args) { final int port = 8088; System.setProperty("server.port", String.valueOf(port)); SpringApplication.run(YourApplicationMain.class, args); } }
Chaconne Console使用说明
Chaconne Console是chaconne框架提供的任务管理和查看的Web项目,它也支持去中心化部署和中心化部署模式,默认端口6140
提供了如下功能:
- 保存任务和查看任务信息
- 暂停和继续任务
- 删除任务
- 手动运行任务
- 查看任务统计(按天)
- 查看任务运行时日志
目前Chaconne Console项目还在不断的维护中,有些功能略显粗糙(任务JSON编辑器),有些功能暂未开放。
同样,Chaconne Console也是一个SpringBoot的工程
源码:
@EnableChaconneClientMode
@SpringBootApplication(exclude = { DataSourceAutoConfiguration.class })
public class ChaconneConsoleMain {
static {
System.setProperty("spring.devtools.restart.enabled", "false");
File logDir = FileUtils.getFile(FileUtils.getUserDirectory(), "logs", "indi", "atlantis", "framework", "chaconne", "console");
if (!logDir.exists()) {
logDir.mkdirs();
}
System.setProperty("DEFAULT_LOG_BASE", logDir.getAbsolutePath());
}
public static void main(String[] args) {
SpringApplication.run(ChaconneConsoleMain.class, args);
System.out.println(Env.getPid());
}
}
注解@EnableChaconneClientMode表示启用一个任务管理客户端
启动后,输入首页地址:http://localhost:6140/chaconn...
首先进入的overview页面:
任务列表:
创建任务:
点击ShowJson可以展示Json格式的数据:
任务详情:
任务日志:
任务统计:
可查看每一个任务的统计(按天)
最后,附上分布式任务调度系统chaconne的源码地址:https://github.com/paganini20...
有兴趣的朋友可以研究一下它的源码
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