I am trying to run a web application with embedded tomcat including a number of spring batch jobs and the spring batch admin. However when I try to run the generated fat jar I get the following error, can anybody from spring batch or boot team help:
Error registering Tomcat:j2eeType=WebModule,name=//localhost/*,J2EEApplication=none,J2EEServer=none
Adding more information:
Version of spring boot: 1.1.9.RELEASE from spring.io parent pom version 1.0.3.RELEASE
I tried running it from STS as well as using mvn spring-boot:run with the same effect.
The batch jobs read from a file and write to hornetq.
The complete stack trace is as follows:
2014-11-14 14:22:45.236 ERROR 404 --- [ost-startStop-1] org.apache.tomcat.util.modeler.Registry : Error registering Tomcat:j2eeType=WebModule,name=//localhost/*,J2EEApplication=none,J2EEServer=none`
javax.management.RuntimeOperationsException: null
at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:411)`
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)`
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
at org.apache.tomcat.util.modeler.Registry.registerComponent(Registry.java:742)
at org.apache.catalina.util.LifecycleMBeanBase.register(LifecycleMBeanBase.java:158)
at org.apache.catalina.util.LifecycleMBeanBase.initInternal(LifecycleMBeanBase.java:61)
at org.apache.catalina.core.ContainerBase.initInternal(ContainerBase.java:1084)
at org.apache.catalina.core.StandardContext.initInternal(StandardContext.java:6506)
at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: Repository: cannot add mbean for pattern name Tomcat:j2eeType=WebModule,name=//localhost/*,J2EEApplication=none,J2EEServer=none
... 19 common frames omitted
I assume the name is not a valid object name: //localhost/*
Could you try with a different name, or either escape or quote the name. This should fix the problem.
Related
So on Spring Cloud Streams : Overview they have the following then the version is labelled as Horsham.SR8 [3.0.8 RELEASE]:
But then this comment says Hoxton.SR5
However, currently in my application where I'm attempting to upgrade from Spring 2.1.X and Spring Cloud Greenwich to Spring 2.3.3 and Spring Cloud ? (currently Hoston.SR8) I get the following:
2020-08-31 15:16:59.561 WARN [main] org.springframework.boot.SpringApplication - - Unable to close ApplicationContext
java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.stream.function.FunctionConfiguration] from ClassLoader [jdk.internal.loader.ClassLoaders$AppClassLoader#512ddf17]
at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:481)
at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:358)
at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:414)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.lambda$getTypeForFactoryMethod$2(AbstractAutowireCapableBeanFactory.java:742)
at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1737)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:741)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:680)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:648)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1614)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:523)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:495)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:620)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:612)
at org.springframework.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1243)
at org.springframework.boot.SpringApplication.getExitCodeFromMappedException(SpringApplication.java:880)
at org.springframework.boot.SpringApplication.getExitCodeFromException(SpringApplication.java:868)
at org.springframework.boot.SpringApplication.handleExitCode(SpringApplication.java:855)
at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:806)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:325)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
at com.myapplicaiton.MyApplicationKt.main(MyApplicationKt.kt:78)
Caused by: java.lang.NoClassDefFoundError: org/springframework/cloud/function/context/PollableBean
at java.base/java.lang.Class.getDeclaredMethods0(Native Method)
at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3167)
at java.base/java.lang.Class.getDeclaredMethods(Class.java:2310)
at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:463)
... 21 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.cloud.function.context.PollableBean
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 25 common frames omitted
What version of spring-cloud-function-context do you have on the classpath?
I created a new Boot 2.3.3/Hoxton.SR8 app this morning and I see that class in spring-cloud-function-context-3.0.10.RELEASE.jar which should automatically be picked up.
I've installed WSO2 Integration Studio version 6.5.0 in my Windows workstation and created a project using the Kafka Consumer and Producer built-in template.
Then I configured the project with my own Kafka server settings (topic name "myTopic").
I then right-clicked the composite application and chose Export Project Artifacts and Run.
The Console window displayed at the very top the following messages:
[2019-06-25 09:23:45,499] [micro-integrator] INFO - LibraryArtifactDeployer Synapse Library named '{org.wso2.carbon.connector}kafkaTransport' has been deployed from file : C:\IntegrationStudio\runtime\microesb\tmp\carbonapps\-1234\1561465425230TestCompositeApplication_1.0.0.car\kafkaTransport-connector_2.0.6\kafkaTransport-connector-2.0.6.zip
[2019-06-25 09:23:45,517] [micro-integrator] INFO - SynapseImportFactory Successfully created Synapse Import: kafkaTransport
[2019-06-25 09:23:45,533] [micro-integrator] ERROR - ClassMediatorFactory
Error in instantiating class :
org.wso2.carbon.connector.KafkaProduceConnector
java.lang.NoClassDefFoundError: org/apache/kafka/common/header/Headers
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
[snipped rest for clarity]
I've tried uninstalling Integrator Studio and running it with elevated right to no avail.
I expected the project to be deployed normally.
EDIT: after copying:
kafka_2.11-2.2.1.jar
metrics-core-2.2.0.jar
zkclient-0.11.jar
kafka-clients-2.2.1.jar
scala-library-2.11.12.jar
zookeeper-3.4.13.jar
to the EI_HOME/lib directory, the exception changed to:
org.apache.axis2.deployment.DeploymentException: kafka/consumer/ConsumerTimeoutException
at org.apache.synapse.deployers.AbstractSynapseArtifactDeployer.deploy(AbstractSynapseArtifactDeployer.java:219)
at org.wso2.carbon.application.deployer.synapse.SynapseAppDeployer.deployArtifactType(SynapseAppDeployer.java:1099)
at org.wso2.carbon.application.deployer.synapse.SynapseAppDeployer.deployArtifacts(SynapseAppDeployer.java:114)
at org.wso2.carbon.application.deployer.internal.ApplicationManager.deployCarbonApp(ApplicationManager.java:272)
at org.wso2.carbon.application.deployer.CappAxis2Deployer.deploy(CappAxis2Deployer.java:72)
at org.apache.axis2.deployment.repository.util.DeploymentFileData.deploy(DeploymentFileData.java:136)
at org.apache.axis2.deployment.DeploymentEngine.doDeploy(DeploymentEngine.java:807)
at org.apache.axis2.deployment.repository.util.WSInfoList.update(WSInfoList.java:144)
[snipped for clarity]
Caused by: org.apache.axis2.deployment.DeploymentException: kafka/consumer/ConsumerTimeoutException
at org.apache.synapse.deployers.AbstractSynapseArtifactDeployer.deploy(AbstractSynapseArtifactDeployer.java:207)
... 87 more
Caused by: java.lang.NoClassDefFoundError: kafka/consumer/ConsumerTimeoutException
at org.wso2.carbon.inbound.endpoint.protocol.kafka.KAFKAPollingConsumer.startsMessageListener(KAFKAPollingConsumer.java:90)
at org.wso2.carbon.inbound.endpoint.protocol.kafka.KAFKAProcessor.init(KAFKAProcessor.java:96)
at org.apache.synapse.inbound.InboundEndpoint.init(InboundEndpoint.java:79)
at org.apache.synapse.deployers.InboundEndpointDeployer.deploySynapseArtifact(InboundEndpointDeployer.java:57)
at org.apache.synapse.deployers.AbstractSynapseArtifactDeployer.deploy(AbstractSynapseArtifactDeployer.java:197)
... 87 more
Caused by: java.lang.ClassNotFoundException: kafka.consumer.ConsumerTimeoutException cannot be found by synapse-core_2.1.7.wso2v111
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:475)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 92 more
Have you copied the required jars from kafka_home/libs folder to EI_home/lib, if yes then share your code to get the issue detail
According to this documentation https://docs.wso2.com/display/EI650/Kafka+Inbound+Protocol, the recommended versions for Kafka is kafka_2.9.2-0.8.1.1. You can download it in the below link. http://kafka.apache.org/downloads.html. Please use those jars and copy them to the EI_HOME/lib. There is an github issue for this as well. https://github.com/wso2/product-ei/issues/2239
I may be a bit too late but we have been using Custom inbound endpoint for Kafka. We also faced exactly same issue and that was the only way to fix it.
You could use https://github.com/wso2-extensions/esb-inbound-kafka/blob/master/docs/config.md to configure it.
I Have a mapreduce program in which i make use of Hcatalog to get details from a Hive table 'A' with HcatInputFormat, process it and write it back to Hive table 'B' using HcatOutput format.
i wrote the program using eclipse and created a runnable 'Hadooptest' jar from the project, and i run the jar using hadoop jar command in hadoop cluster (with -libjars parameter
when i create runnable jar by extracting all referenced jar into the jar file, and then execute in hadoop cluster, the mapreduce runs fine and finishes successfully.
The issue is, when i create runnable jar using the 'copy required libraries into sub-folder next to generated JAR' option, then move both the jar and refrenced libraries to hadoop cluster, and execute it, It shows
"org.apache.hadoop.yarn.exceptions.YarnRuntimeException:
java.lang.RuntimeException: java.lang.ClassNotFoundException: Class
org.apache.hive.hcatalog.mapreduce.HCatOutputFormat not found"
below is the full yarn log :
2016-06-29 12:17:57,951 INFO [main] org.apache.hadoop.mapreduce.v2.app.MRAppMaster: Created MRAppMaster for application appattempt_1466834505106_0057_000002
2016-06-29 12:17:58,672 WARN [main] org.apache.hadoop.util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2016-06-29 12:17:58,773 INFO [main] org.apache.hadoop.mapreduce.v2.app.MRAppMaster: Executing with tokens:
2016-06-29 12:17:58,773 INFO [main] org.apache.hadoop.mapreduce.v2.app.MRAppMaster: Kind: YARN_AM_RM_TOKEN, Service: , Ident: (appAttemptId { application_id { id: 57 cluster_timestamp: 1466834505106 } attemptId: 2 } keyId: 783034855)
2016-06-29 12:17:58,974 INFO [main] org.apache.hadoop.mapreduce.v2.app.MRAppMaster: Using mapred newApiCommitter.
2016-06-29 12:17:59,840 INFO [main] org.apache.hadoop.mapreduce.v2.app.MRAppMaster: OutputCommitter set in config null
2016-06-29 12:17:59,920 INFO [main] org.apache.hadoop.service.AbstractService: Service org.apache.hadoop.mapreduce.v2.app.MRAppMaster failed in state INITED; cause: org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hive.hcatalog.mapreduce.HCatOutputFormat not found
org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hive.hcatalog.mapreduce.HCatOutputFormat not found
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$1.call(MRAppMaster.java:472)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$1.call(MRAppMaster.java:452)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.callWithJobClassLoader(MRAppMaster.java:1538)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.createOutputCommitter(MRAppMaster.java:452)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.serviceInit(MRAppMaster.java:371)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$4.run(MRAppMaster.java:1496)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.initAndStartAppMaster(MRAppMaster.java:1493)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.main(MRAppMaster.java:1426)
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class org.apache.hive.hcatalog.mapreduce.HCatOutputFormat not found
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2195)
at org.apache.hadoop.mapreduce.task.JobContextImpl.getOutputFormatClass(JobContextImpl.java:222)
at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$1.call(MRAppMaster.java:468)
... 11 more
Caused by: java.lang.ClassNotFoundException: Class org.apache.hive.hcatalog.mapreduce.HCatOutputFormat not found
at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2101)
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193)
... 13 more
End of LogType:syslog
And it is necessary that i export required libraries into seperate folder and not extract into the jar itself.
Any help to figure this out will be appreciated.
All the jars aalready exists in your hadoop cluster, you need just to pass their location to your program, it's mentioned in the official doc :
export HADOOP_HOME=<path_to_hadoop_install>
export HCAT_HOME=<path_to_hcat_install>
export HIVE_HOME=<path_to_hive_install>
export LIB_JARS=$HCAT_HOME/share/hcatalog/hcatalog-core-0.5.0.jar,
$HIVE_HOME/lib/hive-metastore-0.10.0.jar,
$HIVE_HOME/lib/libthrift-0.7.0.jar,
$HIVE_HOME/lib/hive-exec-0.10.0.jar,
$HIVE_HOME/lib/libfb303-0.7.0.jar,
$HIVE_HOME/lib/jdo2-api-2.3-ec.jar,
$HIVE_HOME/lib/slf4j-api-1.6.1.jar
export HADOOP_CLASSPATH=$HCAT_HOME/share/hcatalog/hcatalog-core-0.5.0.jar:
$HIVE_HOME/lib/hive-metastore-0.10.0.jar:
$HIVE_HOME/lib/libthrift-0.7.0.jar:
$HIVE_HOME/lib/hive-exec-0.10.0.jar:
$HIVE_HOME/lib/libfb303-0.7.0.jar:
$HIVE_HOME/lib/jdo2-api-2.3-ec.jar:
$HIVE_HOME/conf:$HADOOP_HOME/conf:
$HIVE_HOME/lib/slf4j-api-1.6.1.jar
$HADOOP_HOME/bin/hadoop --config $HADOOP_HOME/conf jar <path_to_jar>
<main_class> -libjars $LIB_JARS <program_arguments>
When I looked at Spring Boot, I liked the idea that it:
Gets out of the way quickly if you want to change defaults. - Dave Syer, Spring One 2GX 2013
It wasn't long before practicality hit me. While trying to make Boot work with a 100% Groovy/no-XML pet project, I found 2 issues in 2 days. Here's one of them.
Groovy config file:
beans {
xmlns([ctx:'http://www.springframework.org/schema/context'])
ctx.'component-scan'('base-package':'name.abhijitsarkar.moviedatabase')
}
Exception:
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read XML document; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Unable to determine validation mode for [Groovy]: cannot open InputStream. Did you attempt to load directly from a SAX InputSource without specifying the validationMode on your XmlBeanDefinitionReader instance?; nested exception is java.io.FileNotFoundException: Groovy cannot be opened because it does not point to a readable resource
at org.springframework.beans.factory.xml.XmlReaderContext.readDocumentFromString(XmlReaderContext.java:98)
at org.springframework.beans.factory.xml.XmlReaderContext$readDocumentFromString.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
at org.springframework.beans.factory.groovy.GroovyDynamicElementReader.invokeMethod(GroovyDynamicElementReader.groovy:96)
Also posted on Spring forum.
I'm trying to automate deployment of a play application as a .war file.
In the end the application will be run on JBOSS AS7.
The problem I'm running into right now is that when I deploy the war to JBOSS I get this exception.
14:52:39,728 INFO [org.jboss.as.server.deployment] (MSC service thread 1-2) Starting deployment of "my-test-app-server-0.0.2-SNAPSHOT.war"
14:52:43,822 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-7) MSC00001: Failed to start service jboss.deployment.unit."my-test-app-server-0.0.2-SNAPSHOT.war".PARSE: org.jboss.msc.service.Start
Exception in service jboss.deployment.unit."my-test-app-server-0.0.2-SNAPSHOT.war".PARSE: Failed to process phase PARSE of deployment "my-test-app-server-0.0.2-SNAPSHOT.war"
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:121) [jboss-as-server-7.0.2.Final.jar:7.0.2.Final]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_22]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_22]
at java.lang.Thread.run(Thread.java:662) [:1.6.0_22]
Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: Failed to parse POJO xml ["/C:/jboss-as-web-7.0.2.Final/bin/content/my-test-app-server-0.0.2-SNAPSHOT.war/WEB-INF/lib/netty-3.2.5.Final.jar/META-INF/jboss-beans.xml"]
at org.jboss.as.pojo.KernelDeploymentParsingProcessor.parseDescriptor(KernelDeploymentParsingProcessor.java:130)
at org.jboss.as.pojo.KernelDeploymentParsingProcessor.parseDescriptors(KernelDeploymentParsingProcessor.java:104)
at org.jboss.as.pojo.KernelDeploymentParsingProcessor.deploy(KernelDeploymentParsingProcessor.java:76)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115) [jboss-as-server-7.0.2.Final.jar:7.0.2.Final]
... 5 more
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[17,1] Message: Unexpected element '{urn:jboss:bean-deployer:2.0}deployment'
at org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:98) [staxmapper-1.0.0.Final.jar:1.0.0.Final]
at org.jboss.staxmapper.XMLMapperImpl.parseDocument(XMLMapperImpl.java:59) [staxmapper-1.0.0.Final.jar:1.0.0.Final]
at org.jboss.as.pojo.KernelDeploymentParsingProcessor.parseDescriptor(KernelDeploymentParsingProcessor.java:123)
... 8 more
I found that if I manually remove the lib/netty-3.2.5.Final.jar file from the war before deploying it to JBOSS the problem goes away.
Now is there a way to do this when I'm generating the war with the play war command?
Any information on this would be much appreciated.
Thanks
Not that I am aware of simply. The play war command allows you to pass an exclude list, which I have copied the comments from the python file below.
~ To exclude some directories, use the --exclude option and ':'-separator (eg: --exclude .svn:target:logs:tmp).
However, this suggests it will only work for directories.
The command that is executed is package_as_war in framework/pym/utils.py, so you can hack that to specifically delete the file, but obviously this will not be backward compatible if you update your version of Play.