Re: is too quick to respond
On 17/02/2022 19:50, Christopher Schultz wrote: This kind of thing could happen due to a number of different reasons, such as a slow disk or network share, etc. and ought to be protected-against. I haven't looked at the code, but I would imagine it periodically reads all relevant files looking for anything that's been updated, but immediately acts the first time is finds someting worth triggering a reload. It does. The periodic check is triggered by the background process. It might make more sense to modify that logic so that *all* files are checked, but we cancel the reload if there are any files that are "too new". This would allow us to avoid a reload if some kind of copy is in progress. So we are looking for "anything newer than last_reload_timestamp but not if we find anything older than NOW - 10 seconds". Yes. We do something similar when checking for an update WAR file. Ten seconds might be a little on the high side. Would you be interested in looking at the existing algorithm to see if it would be updated in this way? WebappLoader.backgroundProcess() would be a good place to start. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: is too quick to respond
John, On 2/17/22 10:46, John Barrow wrote: Hi, I am now running Tomcat version 10.0.16 having just upgraded from 9.0.41. As a developer, I make use of the META-INF\context.xml feature to detect changes within the classes folder WEB-INF\classes by However, since moving to Tomcat 10.0.16, the reload keeps crashing Tomcat due to the fact that Netbeans is recompiling multiple files and as soon as the first file is completed, I believe that Tomcat triggers its reload process and then fails as one of the listener classes is still in the process of being rebuilt by Netbeans and so Tomcat can’t access it for that split second to install the listener. If I shut down Tomcat and re-open it again, all is well as Netbeans has then had time to finish the re-compile. If I make a change within the implementation of (say) one of the listeners, so that Netbeans only has to re-compile that one .class file, then Tomcat reloads the application perfectly. Therefore, I was looking for the ability to add a delay to force Tomcat, on having detected a change in one of the files, to wait a moment to let Netbeans finish its job. I have researched the relevant help files and read through https://tomcat.apache.org/tomcat-8.0-doc/config/context.html and can’t see any additional attribute that might handle this scenario. If there isn’t an option, is it valid to raise it in the Bug Database? I have searched the existing list and can’t see any previous mention of it. For some reason, I didn’t experience this while using Tomcat 9.0.41, but it may have been slower to react to the .class files being change and so did not have an issue with the files not being available while they were being recompiled. The relevant part of the log is as below 17-Feb-2022 14:47:54.861 SEVERE [Catalina-utility-2] org.apache.catalina.core.StandardContext.listenerStart Error configuring application listener of class [Listener.DataDictionary] java.lang.ClassNotFoundException: Listener.DataDictionary at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1444) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1252) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:535) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:516) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4640) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5179) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3781) at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:268) at org.apache.catalina.core.StandardContext.backgroundProcess(StandardContext.java:5562) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1365) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1369) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1369) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1347) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:833) 17-Feb-2022 14:47:54.861 SEVERE [Catalina-utility-2] org.apache.catalina.core.StandardContext.listenerStart Skipped installing application listeners due to previous error(s) Thanks in advance and here’s hoping to not have to have to
Re: Tomcat 9.0.58 and OpenJDK 1.8.0_322
We think our java.security file is borked somehow. So going down that road
at the moment.
--
Bob
On Thu, Feb 17, 2022 at 12:49 PM Thad Humphries
wrote:
> What is your use for SHA-1? Are you using it in your own code, like
> `MessageDigest.getInstance("SHA-1")` or do you have signed JARs? Or maybe
> certificates that use SHA-1? (though I don't think those have been a thing
> for quite some time)
>
> java.security.MessageDigest for Java 8 supposed to support MD5, SHA-1, and
> SHA-256 (see
> https://docs.oracle.com/javase/8/docs/api/java/security/MessageDigest.html
> ).
> I see references that SHA-1 has been disable for signed JARs (ex.,
> https://bugs-stage.openjdk.java.net/browse/JDK-8270610 and more
> https://adoptium.net/release_notes.html). However I do not see that SHA-1
> has been dropped from MessageDigest.
>
> Asking for a friend...
>
> On Wed, Feb 16, 2022 at 4:03 PM Noelette Stout
> wrote:
>
> > Based on those errors, it sounds like SHA-1 has been desupported in the
> > newer OpenJDK version.
> >
> > On Wed, Feb 16, 2022 at 1:55 PM Robert Hicks
> > wrote:
> >
> > > We are currently running Tomcat 9.0.40 and OpenJDK (Red Hat) 1.8.0_292
> > and
> > > have no issues.
> > >
> > > We upgrade to the ones in the subject line and Tomcat throws "SHA1PRNG
> > > SecureRandom not available" and "SHA MessageDigest not available" and
> > > "SHA-1 not available" and others.
> > >
> > > We downgrade to .40 and _292 and all is well again.
> > >
> > > Was there a change that could possibly cause that?
> > >
> > > Has anyone else seen this behavior?
> > >
> > > We are currently troubleshooting to see if we missed something on our
> end
> > > and can supply logs when that happens.
> > >
> > > Thanks!
> > >
> > > --
> > > Bob
> > >
> >
> >
> > --
> > Noelette Stout
> > ITS Enterprise Applications - Senior Application Administrator
> > Idaho State University
> > E-mail: stounoel "at" isu "dot" edu
> > Desk: 208-282-2554
> >
>
>
> --
> "Hell hath no limits, nor is circumscrib'd In one self-place; but where we
> are is hell, And where hell is, there must we ever be" --Christopher
> Marlowe, *Doctor Faustus* (v. 111-13)
>
Re: Tomcat 9.0.58 and OpenJDK 1.8.0_322
What is your use for SHA-1? Are you using it in your own code, like
`MessageDigest.getInstance("SHA-1")` or do you have signed JARs? Or maybe
certificates that use SHA-1? (though I don't think those have been a thing
for quite some time)
java.security.MessageDigest for Java 8 supposed to support MD5, SHA-1, and
SHA-256 (see
https://docs.oracle.com/javase/8/docs/api/java/security/MessageDigest.html).
I see references that SHA-1 has been disable for signed JARs (ex.,
https://bugs-stage.openjdk.java.net/browse/JDK-8270610 and more
https://adoptium.net/release_notes.html). However I do not see that SHA-1
has been dropped from MessageDigest.
Asking for a friend...
On Wed, Feb 16, 2022 at 4:03 PM Noelette Stout
wrote:
> Based on those errors, it sounds like SHA-1 has been desupported in the
> newer OpenJDK version.
>
> On Wed, Feb 16, 2022 at 1:55 PM Robert Hicks
> wrote:
>
> > We are currently running Tomcat 9.0.40 and OpenJDK (Red Hat) 1.8.0_292
> and
> > have no issues.
> >
> > We upgrade to the ones in the subject line and Tomcat throws "SHA1PRNG
> > SecureRandom not available" and "SHA MessageDigest not available" and
> > "SHA-1 not available" and others.
> >
> > We downgrade to .40 and _292 and all is well again.
> >
> > Was there a change that could possibly cause that?
> >
> > Has anyone else seen this behavior?
> >
> > We are currently troubleshooting to see if we missed something on our end
> > and can supply logs when that happens.
> >
> > Thanks!
> >
> > --
> > Bob
> >
>
>
> --
> Noelette Stout
> ITS Enterprise Applications - Senior Application Administrator
> Idaho State University
> E-mail: stounoel "at" isu "dot" edu
> Desk: 208-282-2554
>
--
"Hell hath no limits, nor is circumscrib'd In one self-place; but where we
are is hell, And where hell is, there must we ever be" --Christopher
Marlowe, *Doctor Faustus* (v. 111-13)
is too quick to respond
Hi, I am now running Tomcat version 10.0.16 having just upgraded from 9.0.41. As a developer, I make use of the META-INF\context.xml feature to detect changes within the classes folder WEB-INF\classes by However, since moving to Tomcat 10.0.16, the reload keeps crashing Tomcat due to the fact that Netbeans is recompiling multiple files and as soon as the first file is completed, I believe that Tomcat triggers its reload process and then fails as one of the listener classes is still in the process of being rebuilt by Netbeans and so Tomcat can’t access it for that split second to install the listener. If I shut down Tomcat and re-open it again, all is well as Netbeans has then had time to finish the re-compile. If I make a change within the implementation of (say) one of the listeners, so that Netbeans only has to re-compile that one .class file, then Tomcat reloads the application perfectly. Therefore, I was looking for the ability to add a delay to force Tomcat, on having detected a change in one of the files, to wait a moment to let Netbeans finish its job. I have researched the relevant help files and read through https://tomcat.apache.org/tomcat-8.0-doc/config/context.html and can’t see any additional attribute that might handle this scenario. If there isn’t an option, is it valid to raise it in the Bug Database? I have searched the existing list and can’t see any previous mention of it. For some reason, I didn’t experience this while using Tomcat 9.0.41, but it may have been slower to react to the .class files being change and so did not have an issue with the files not being available while they were being recompiled. The relevant part of the log is as below 17-Feb-2022 14:47:54.861 SEVERE [Catalina-utility-2] org.apache.catalina.core.StandardContext.listenerStart Error configuring application listener of class [Listener.DataDictionary] java.lang.ClassNotFoundException: Listener.DataDictionary at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1444) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1252) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:535) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:516) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4640) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5179) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3781) at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:268) at org.apache.catalina.core.StandardContext.backgroundProcess(StandardContext.java:5562) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1365) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1369) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1369) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1347) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:833) 17-Feb-2022 14:47:54.861 SEVERE [Catalina-utility-2] org.apache.catalina.core.StandardContext.listenerStart Skipped installing application listeners due to previous error(s) Thanks in advance and here’s hoping to not have to have to keep Stopping & Starting Tomcat for every development change. John
