Tuesday, November 8, 2016

Re: GWT 2.8.0 released

Thanks Thomas for your reply. You are correct, we definitely needs to optimize these dependencies.

About this 'AggregateLifeCycle class. ' Issue. I did able to find out the origin of jetty-deploy from where it was coming, but even excluding it doesn't solve my issue. Any other hint , from where else it can come from ? 

Thanks again for your prompt reply. Always helpful. 

Zeeshan Chughtai
Sr. Software Engineer
AlphaSense  |  Tammasaarenkatu 3  |  00180 Helsinki, Finland
Mobile: +358 45 8953811
zeeshan@alpha-sense.com   |   www.alpha-sense.com

On Tue, Nov 8, 2016 at 12:14 PM, Thomas Broyer <t.broyer@gmail.com> wrote:


On Monday, November 7, 2016 at 11:17:10 PM UTC+1, Zeeshan Chughtai wrote:
Hi,

Thanks for this, really happy to have it around. 

We were using 2.8.0-beta1 version for a while without any major fuss. 

While upgrading to 2.8.0 released version, we get stuck with codeserver refused to start because of class loading issues. 

Here are the changes which we had to made.

<dependency>
    <groupId>xml-apis</groupId>
    <artifactId>xml-apis</artifactId>
    <version>1.4.01</version>
</dependency>

<!-- Only the exclusion part>
<dependency>
    <groupId>com.google.gwt</groupId>
    <artifactId>gwt-dev</artifactId>
    <version>${com.google.gwt.version}</version>
    <scope>compile</scope>
    <exclusions>
        <exclusion>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>apache-jsp</artifactId>
        </exclusion>
    </exclusions>
</dependency>

Compilation and tomcat startup went well without any real issues. 

Here is a exception which we are facing when running codeserver. 

[INFO] 23:11:19,291 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@225153c8 - Registering current configuration as safe fallback point  [INFO]  [INFO]    Loading Java files in com.alphasense.AlphaInsightDebug.  [INFO]    Module setup completed in 4628 ms  [ERROR] java.lang.NoClassDefFoundError: org/eclipse/jetty/util/component/AggregateLifeCycle  [ERROR] 	at java.lang.ClassLoader.defineClass1(Native Method)  [ERROR] 	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)  [ERROR] 	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  [ERROR] 	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)  [ERROR] 	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)  [ERROR] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)  [ERROR] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)  [ERROR] 	at java.security.AccessController.doPrivileged(Native Method)  [ERROR] 	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)  [ERROR] 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)  [ERROR] 	at java.lang.ClassLoader.defineClass1(Native Method)  [ERROR] 	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)  [ERROR] 	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  [ERROR] 	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)  [ERROR] 	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)  [ERROR] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)  [ERROR] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)  [ERROR] 	at java.security.AccessController.doPrivileged(Native Method)  [ERROR] 	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)  [ERROR] 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)  [ERROR] 	at java.lang.ClassLoader.defineClass1(Native Method)  [ERROR] 	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)  [ERROR] 	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  [ERROR] 	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)  [ERROR] 	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)  [ERROR] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)  [ERROR] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)  [ERROR] 	at java.security.AccessController.doPrivileged(Native Method)  [ERROR] 	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)  [ERROR] 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)  [ERROR] 	at java.lang.ClassLoader.defineClass1(Native Method)  [ERROR] 	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)  [ERROR] 	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  [ERROR] 	at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)  [ERROR] 	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)  [ERROR] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:368)  [ERROR] 	at java.net.URLClassLoader$1.run(URLClassLoader.java:362)  [ERROR] 	at java.security.AccessController.doPrivileged(Native Method)  [ERROR] 	at java.net.URLClassLoader.findClass(URLClassLoader.java:361)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)  [ERROR] 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)  [ERROR] 	at com.google.gwt.dev.codeserver.WebServer.start(WebServer.java:121)  [ERROR] 	at com.google.gwt.dev.codeserver.CodeServer.start(CodeServer.java:161)  [ERROR] 	at com.google.gwt.dev.codeserver.CodeServer.main(CodeServer.java:102)  [ERROR] 	at com.google.gwt.dev.codeserver.CodeServer.main(CodeServer.java:55)  [ERROR] Caused by: java.lang.ClassNotFoundException: org.eclipse.jetty.util.component.AggregateLifeCycle  [ERROR] 	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)  [ERROR] 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)  [ERROR] 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)  [ERROR] 	... 52 more  [INFO] ------------------------------------------------------------------------  [INFO] BUILD FAILURE  [INFO] ------------------------------------------------------------------------

I've attached my WEB-IN/lib directory structure with beta version build and released version of 2.8.0 build.

If this is your WEB-INF/lib, then you have a problem: why does it contain gwt-dev and all those Jetty JARs? Those aren't supposed to be inside the webapp, they are dev-time dependencies, not runtime ones.
(hint: gwt-dev should have scope provided, not compile)
 
The jetty version with 2.8.0 release is jetty-util-9.2.14.v20151106.jar which 
doesn't have AggregateLifeCycle class.

I'd bet this is due to the jetty-deploy-8.1.10.v20130312.jar. Run "mvn dependency:tree" to find out where it comes from.
I also see guava 17 and guava-gwt 20; so overall you need a better "dependency hygiene".
And if you somehow have conflicts between the dependencies brought by GWT (Jetty et al.) and the ones needed by other, non-GWT dependencies; I highly suggest splitting your project into (at least) 2 modules: one for the client-side code and one for the server-side code, so that each can have its own set of dependencies that won't conflict.


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