[英]Jersey - Massive Latency Calling Service Method From Resource
我有一個提供資源類的Jersey REST服務,該資源類調用服務類上的方法。 在測試過程中,我們注意到資源方法的“ Entering”日志語句與服務之間存在延遲。 此延遲可能長達5分鍾,盡管通常在2分鍾范圍內。 偶爾,延遲是最小的(毫秒)。
這是我們的類的樣子:
資源資源
@Stateless
@Path("/provision")
public class ProvisionResource
{
private final Logger logger = LoggerFactory.getLogger(ProvisionResource.class);
@EJB
private ProvisionService provisionService;
@GET
@Produces(MediaType.APPLICATION_XML)
@Path("/subscriber")
public SubscriberAccount querySubscriberAccount(
@QueryParam("accountNum") String accountNum)
{
logger.debug("Entering querySubscriberAccount()");
final SubscriberAccount account;
try
{
account = provisionService.querySubscriber(accountNum);
}
catch (IllegalArgumentException ex)
{
logger.error("Illegal argument while executing query for subscriber account",
ex);
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
catch (Exception ex)
{
logger.error("Unexpected exception while executing query for subscriber account",
ex);
throw new WebApplicationException(Response.Status.INTERNAL_SERVER_ERROR);
}
logger.debug("Exiting querySubscriberAccount()");
return account;
}
}
服務:
@Singleton
public class ProvisionService
{
private final Logger logger = LoggerFactory.getLogger(ProvisionService.class);
public SubscriberAccount querySubscriber(final String accountNum) throws IllegalArgumentException, Exception
{
logger.debug("Entering querySubscriber()");
if (null == accountNum)
{
throw new IllegalArgumentException("The argument {accountNum} must not be NULL");
}
SubscriberAccount subscriberAccount = null;
try
{
// do stuff to get subscriber account
}
catch (Exception ex)
{
throw new Exception("Caught exception querying {accountNum}=["
+ accountNum + "]", ex);
}
finally
{
logger.debug("Exiting querySubscriber()");
}
return subscriberAccount;
}
這是日志中的一些示例,顯示了輸入方法的時間戳。
2012 Feb 07 15:31:06,303 MST [http-thread-pool-80(1)] DEBUG my.package.ProvisionResource - Entering querySubscriberAccount()
2012 Feb 07 15:31:06,304 MST [http-thread-pool-80(1)] DEBUG my.package.ProvisionService - Entering querySubscriber()
2012 Feb 07 15:35:06,359 MST [http-thread-pool-80(1)] DEBUG my.package.ProvisionResource - Entering querySubscriberAccount()
2012 Feb 07 15:40:33,395 MST [http-thread-pool-80(1)] DEBUG my.package.ProvisionService - Entering querySubscriber()
2012 Feb 07 15:34:06,345 MST [http-thread-pool-80(2)] DEBUG my.package.ProvisionResource - Entering querySubscriberAccount()
2012 Feb 07 15:37:24,372 MST [http-thread-pool-80(2)] DEBUG my.package.ProvisionService - Entering querySubscriber()
2012 Feb 07 15:33:06,332 MST [http-thread-pool-80(4)] DEBUG my.package.ProvisionResource - Entering querySubscriberAccount()
2012 Feb 07 15:34:15,349 MST [http-thread-pool-80(4)] DEBUG my.package.ProvisionService - Entering querySubscriber()
2012 Feb 07 15:37:24,371 MST [http-thread-pool-80(4)] DEBUG my.package.ProvisionResource - Entering querySubscriberAccount()
2012 Feb 07 15:40:36,004 MST [http-thread-pool-80(4)] DEBUG my.package.ProvisionService - Entering querySubscriber()
2012 Feb 07 15:32:06,317 MST [http-thread-pool-80(5)] DEBUG my.package.ProvisionResource - Entering querySubscriberAccount()
2012 Feb 07 15:34:15,325 MST [http-thread-pool-80(5)] DEBUG my.package.ProvisionService - Entering querySubscriber()
2012 Feb 07 15:36:06,373 MST [http-thread-pool-80(5)] DEBUG my.package.ProvisionResource - Entering querySubscriberAccount()
2012 Feb 07 15:40:34,956 MST [http-thread-pool-80(5)] DEBUG my.package.ProvisionService - Entering querySubscriber()
如您所見,第一個在輸入資源的querySubscriberAccount之后幾乎立即在服務中調用了querySubscriber方法。 但是,隨后對Web服務的調用大約需要1到5分鍾。 資源中實際上沒有任何事情可以阻止處理/調用服務。
該Web服務部署在Glassfish 3.1.1中的Linux服務器上。
有人看過類似的東西嗎? 有什么建議嗎?
編輯
只是更多信息...
Web Service War部署到的域中部署了4個應用程序:
當我們禁用耳朵和“其他” war文件(僅啟用Jersey戰爭和測試servlet)時,延遲問題就消失了。 我們重新啟用了戰爭和行動,一切仍然繼續及時作出反應。 當我們重新部署Jersey Webservice戰爭(進行了一些日志更改)時,延遲問題立即出現。
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