[Design the new POJO MicroContainer] - Re: Missing element in WeakRefVFSCache
by adrian＠jboss.org
Looks like you broke the build:
| 17:39:56,993 ERROR [AbstractKernelController] Error installing to Start: name=VFSCache state=Create
| java.lang.IllegalAccessException: Class org.jboss.reflect.plugins.introspection.ReflectionUtils can not access a member of class org.jboss.virtual.spi.cache.VFSCacheFactory$NoopVFSCache with modifiers "public"
| at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:65)
| at java.lang.reflect.Method.invoke(Method.java:578)
| at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:59)
| at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:150)
| at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66)
| at org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:241)
| at org.jboss.kernel.plugins.dependency.ExecutionWrapper.execute(ExecutionWrapper.java:47)
| at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchExecutionWrapper(KernelControllerContextAction.java:109)
| at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAction.java:70)
| at org.jboss.kernel.plugins.dependency.LifecycleAction.installActionInternal(LifecycleAction.java:221)
| at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54)
| at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42)
| at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
| at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
| at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
| at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
| at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1598)
| at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
| at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1062)
| at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
| at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:774)
| at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:540)
| at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deployBean(AbstractKernelDeployer.java:331)
| at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deployBeans(AbstractKernelDeployer.java:309)
| at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deploy(AbstractKernelDeployer.java:130)
| at org.jboss.kernel.plugins.deployment.BasicKernelDeployer.deploy(BasicKernelDeployer.java:76)
| at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:88)
| at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:158)
| at org.jboss.bootstrap.microcontainer.ServerImpl.doStart(ServerImpl.java:115)
| at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:399)
| at org.jboss.Main.boot(Main.java:209)
| at org.jboss.Main$1.run(Main.java:544)
| at java.lang.Thread.run(Thread.java:595)
|
In jboss-vfs 2.0.0.CR2 the class is not static
| [ejort@warjort bin]$ javap -c -classpath ~/.m2/repository/org/jboss/jboss-vfs/2.0.0.CR2/jboss-vfs-2.0.0.CR2.jar org.jboss.virtual.spi.cache.VFSCacheFactory.NoopVFSCache
| Compiled from "VFSCacheFactory.java"
| class org.jboss.virtual.spi.cache.VFSCacheFactory$NoopVFSCache extends java.lang.Object implements org.jboss.virtual.spi.cache.VFSCache{
| public org.jboss.virtual.VirtualFile getFile(java.net.URI) throws java.io.IOException;
| Code:
| 0: aload_1
| 1: invokestatic #3; //Method org/jboss/virtual/VFS.getRoot:(Ljava/net/URI;)Lorg/jboss/virtual/VirtualFile;
| 4: areturn
|
| public org.jboss.virtual.VirtualFile getFile(java.net.URL) throws java.io.IOException;
| Code:
| 0: aload_1
| 1: invokestatic #4; //Method org/jboss/virtual/VFS.getRoot:(Ljava/net/URL;)Lorg/jboss/virtual/VirtualFile;
| 4: areturn
|
| public void putContext(org.jboss.virtual.spi.VFSContext);
| Code:
| 0: return
|
| public void removeContext(org.jboss.virtual.spi.VFSContext);
| Code:
| 0: return
|
| public void start() throws java.lang.Exception;
| Code:
| 0: return
|
| public void stop();
| Code:
| 0: return
|
| public void flush();
| Code:
| 0: return
|
| HERE!!! Passing the VFSCacheFactory instance.
|
| org.jboss.virtual.spi.cache.VFSCacheFactory$NoopVFSCache(org.jboss.virtual.spi.cache.VFSCacheFactory$1);
| Code:
| 0: aload_0
| 1: invokespecial #1; //Method "<init>":()V
| 4: return
|
| }
|
Which also doesn't match the source????
http://viewvc.jboss.org/cgi-bin/viewvc.cgi/jbossas/projects/vfs/tags/2.0....
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15 years, 7 months
[Design the new POJO MicroContainer] - Re: Missing element in WeakRefVFSCache
by adrian＠jboss.org
"alesj" wrote :
| But when inspecting jmx-console VFSCacheStatistics,
| I'm missing jboss.server.lib.url (it's real value) in VFSContext list.
|
| Where did I go wrong? :-)
Simple experiment shows that you are not showing the raw config options.
In the default config (where that directory is empty) it does not appear,
but it appears in the all config where it contains jars.
| [ejort@warjort bin]$ ./twiddle.sh invoke jboss.vfs:service=VFSCacheStatistics listCachedContexts
| <table><tr><th>VFSContext - root URI</th></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/lib/</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/default/conf/</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/default/deploy/</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/default/deployers/</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/lib/</td></tr></table>
|
| ...
|
| [ejort@warjort bin]$ ./twiddle.sh invoke jboss.vfs:service=VFSCacheStatistics listCachedContexts
| <table><tr><th>VFSContext - root URI</th></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/lib/</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/all/conf/</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/all/deploy-hasingleton</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/all/deploy/</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/all/deployers/</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/all/lib/</td></tr><tr><td>file:/home/ejort/jboss-head/build/output/jboss-5.0.0.GA/server/lib/</td></tr></table>
|
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15 years, 7 months
[Design the new POJO MicroContainer] - Missing element in WeakRefVFSCache
by alesj
Just something I noticed, which I didn't expect.
I'm running JBossAS with WeakRefVFSCache: -Djboss.vfs.cache=org.jboss.virtual.plugins.cache.WeakRefVFSCache
Hence every VFSContext that doesn't have strong ref should be GCed.
In order to prevent some of them from being GCed too soon,
I've added the following bean:
| public class PreInitializeVFSContexts
| {
| private Logger log = Logger.getLogger(PreInitializeVFSContexts.class);
| private List<URL> initializedVFSContexts;
| private boolean holdReference;
| private List<VFS> references;
|
| /**
| * Start initializer.
| *
| * @throws Exception for any exception
| */
| public void start() throws Exception
| {
| if (initializedVFSContexts != null && initializedVFSContexts.isEmpty() == false)
| {
| if (holdReference)
| references = new ArrayList<VFS>();
|
| for (URL url : initializedVFSContexts)
| {
| VFS vfs = VFS.getVFS(url);
| log.debug("Initialized Virtual File: " + vfs.getRoot());
| if (holdReference)
| {
| references.add(vfs);
| }
| }
| }
| }
|
| /**
| * Clear possible references.
| */
| public void stop()
| {
| if (references != null)
| references.clear();
| }
|
| /**
| * Get VFS references.
| *
| * @return the VFS references
| */
| public List<VFS> getReferences()
| {
| return references;
| }
|
| /**
| * Set URLs that need to be initialized before anything else.
| *
| * @param initializedVFSContexts the URLs to be initialized
| */
| public void setInitializedVFSContexts(List<URL> initializedVFSContexts)
| {
| this.initializedVFSContexts = initializedVFSContexts;
| }
|
| /**
| * Should we hold the reference to initialized VFSs.
| *
| * @param holdReference the hold reference flag
| */
| public void setHoldReference(boolean holdReference)
| {
| this.holdReference = holdReference;
| }
| }
|
So, if you mark this bean as holdReference, it's gonna put VFS into List,
hence keeping the strong ref; VFS --> VFSContext
See JBossAS/initialize.xml:
| <bean name="JBossVFSInitializer" class="org.jboss.virtual.plugins.cache.PreInitializeVFSContexts">
| <property name="initializedVFSContexts">
| <list elementClass="java.net.URL">
| <value>${jboss.lib.url}</value>
| <value>${jboss.shared.lib.url}</value>
| <value>${jboss.server.lib.url}</value>
| </list>
| </property>
| <property name="holdReference">true</property>
| </bean>
|
But when inspecting jmx-console VFSCacheStatistics,
I'm missing jboss.server.lib.url (it's real value) in VFSContext list.
Where did I go wrong? :-)
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15 years, 7 months