I have class Named as PriorityJobScheduler and in RestControll i want create its object only once to for all the request for that I am instanciating this class in @PostConstruct method but for each new request i am getting a new object.
I want know how can i instanciate this class only once and use its object for all requests.
public class PriorityJobScheduler {
Logger log = LoggerFactory.getLogger(PriorityJobScheduler.class);
private ExecutorService priorityJobPoolExecutor;
private ExecutorService priorityJobScheduler =
Executors.newSingleThreadExecutor();
private PriorityBlockingQueue<DowloadProccess> priorityQueue;
public PriorityJobScheduler(Integer poolSize, Integer queueSize) {
Comparator<DowloadProccess> priorityComparator = Comparator.comparingInt(DowloadProccess::getJobPriority).reversed();
priorityJobPoolExecutor = Executors.newFixedThreadPool(poolSize);
priorityQueue = new PriorityBlockingQueue<DowloadProccess>(queueSize, priorityComparator);
priorityJobScheduler.execute(() -> {
while (true) {
try {
log.debug(priorityQueue.take().toString());
priorityJobPoolExecutor.execute(priorityQueue.take());
} catch (InterruptedException e) {
break;
}
}
});
}
public void scheduleJob(DowloadProccess job) {
priorityQueue.add(job);
log.debug("Jobs in queu :: " + priorityQueue.size());
}
}
My controller
@RestController
public class ZcrController {
private static int POOL_SIZE = 1;
private static int QUEUE_SIZE = 100;
PriorityJobScheduler pjs;
@PostConstruct
public void init() {
pjs = new PriorityJobScheduler(POOL_SIZE, QUEUE_SIZE);
}
@GetMapping("/zcr/run")
public List<Map<String,Object>> exicuteCRTask(@RequestParam(required = false) String agentId,@RequestParam(required = false) String callCenterId,
@RequestParam(required = false) String clientId,@RequestParam(required = false) String skillId,
@RequestParam(required = false) String interval,@RequestParam("callRecordingId") String callRecordingId,@RequestParam(required = false) String type, @RequestParam(required = false) String customReport,@RequestParam(required = false) boolean ivrAcd,
@RequestParam(required = false) String endDate, @RequestParam(required = false) String startDate,
@RequestParam(required = false) String startTime, @RequestParam(required = false) String endTime) {
ITxn txn = new TxnToken();
List<Map<String,Object>> listCDRDetail = dao.getIvrRecords(txn, params,dbParam,type);
log.debug("CDR bean size::" +listCDRDetail.size());
// Here I am passing of instance of that class.
// And on each new request i am getting a new instance pjs.
taskExecutor.runZcrJob(pjs, dbParam, listCDRDetail, type, txn);
return listCDRDetail;
}
You can create the bean in the Spring container
@Configuration
class JobSchedulerConfig {
private static int POOL_SIZE = 1;
private static int QUEUE_SIZE = 100;
@Bean
public PriorityJobScheduler createJobScheduler() {
return new PriorityJobScheduler(POOL_SIZE, QUEUE_SIZE);
}
}
And then Inject this bean in the Rest Controller.
@RestController
public class ZcrController {
private final PriorityJobScheduler priorityJobScheduler;
@Autowired // kept it for readability
public ZcrController(PriorityJobScheduler priorityJobScheduler) {
this.priorityJobScheduler = priorityJobScheduler;
}
...
}