Okay. Yep, my most recent suspicion was correct -- it's related to the
Docker bind to a local folder containing the webapps. As such, I believe
it's a Docker issue of some sort and not Tomcat specific. However, you may
want to understand it more completely in any case.
Thanks for your help Mark, Rob S and Neil.
Here are the full details of the reproduction scenario:
Host system: MacOS 12.2; Docker Desktop v4.4.2 (73305), Engine 20.10.12
1. Using Maven Archetypes, do the following:
mvn archetype:generate -DarchetypeGroupId=org.apache.maven.archetypes
-DarchetypeArtifactId=maven-archetype-webapp -DarchetypeVersion=1.4
When prompted for configuration values, use the following:
groupId: com.example.rt
artifactId: test-el-resolver
version: 1.0-SNAPSHOT
package: com.example.rt
2. Switch to the new folder created for the web app
cd test-el-resolver
3. Modify the index.jsp file (src/main/webapp/index.jsp) to have the
following contents:
<%@page contentType="text/html" pageEncoding="UTF-8" isELIgnored="false" %>
<%@page import="com.example.rt.Failing"%>
<%
final Failing failing = null;
pageContext.setAttribute("failing", failing);
%>
<html>
<body>
<h2>Hello World!</h2>
<p>field1=${failing.field1}</p>
</body>
</html>
4. Add the following contents to
file src/main/java/com/example/rt/Failing.java:
package com.example.rt;
public class Failing {
private final String field1 = "field1_value";
public String getField1() {
return field1;
}
}
5. Build the web app
mvn package
6. Create a local folder to mount/bind into the Docker container
mkdir webapps
7. Copy the WAR file to the new folder
cp target/test-el-resolver.war webapps/
8. Start a docker container binding the local web apps folder
docker run -d -p 8075:8080 --mount
type=volume,src=`pwd`/webapps,dst=/usr/local/tomcat/webapps
tomcat:9.0.58-jre11-openjdk
9. Using a browser (or equivalent), access the app:
curl http://localhost:8075/test-el-resolver/
10. Observe the following exception in the error page:
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:610)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:489)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
</pre><p><b>Root Cause</b></p><pre>javax.servlet.ServletException:
java.lang.NoClassDefFoundError: com/example/rt/Failing (wrong
name: com/example/rt/failing)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:657)
org.apache.jsp.index_jsp._jspService(index_jsp.java:145)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
</pre><p><b>Root Cause</b></p><pre>java.lang.NoClassDefFoundError:
com/example/rt/Failing (wrong name:
com/example/rt/failing)
java.base/java.lang.ClassLoader.defineClass1(Native Method)
java.base/java.lang.ClassLoader.defineClass(Unknown Source)
java.base/java.security.SecureClassLoader.defineClass(Unknown Source)
org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:2478)
org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:870)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1371)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1215)
javax.el.ImportHandler.findClass(ImportHandler.java:477)
javax.el.ImportHandler.resolveClass(ImportHandler.java:421)
javax.servlet.jsp.el.ScopedAttributeELResolver.getValue(ScopedAttributeELResolver.java:85)
org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:124)
org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:93)
org.apache.el.parser.AstValue.getValue(AstValue.java:136)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189)
org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:692)
org.apache.jsp.index_jsp._jspService(index_jsp.java:130)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327)
javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
</pre><p><b>Note</b> The full stack trace of the root cause is available in
the server logs.</p><hr class="line" /><h3>Apache
Tomcat/9.0.58</h3></body></html>
And a "working" scenario, replace step 8 with the following:
docker run -d -p 8075:8080 tomcat:9.0.58-jre11-openjdk
docker cp target/test-e-resolver.war
<container_id>:/usr/local/tomcat/webapps/
Accessing the page with the curl command above will result in the expect
page being displayed (and no exception).
Robert
On Tue, Feb 8, 2022 at 9:39 AM Robert Turner <rtur...@e-djuster.ca> wrote:
> Mark,
>
> Thanks for the quick follow up.
>
> Based on your comments I have some ideas on what it might be, and I should
> be able to narrow that down further for you, and provide all the details
> that you requested.
>
> A few notes on the environment I'm using:
>
> Docker (the host) is running on my Mac (12.2), not in AWS. AWS Linux is
> only involved in the Docker image (as per the Dockerfile I shared earlier).
> Moreover, it happens with Debian in the Docker image as well.
> What I think is important is that I have "<tomcat>/work" and
> "<tomcat>/webapps" mounted to file folders on the Mac, so I am suspecting
> it's something to do with that "mounting" of the volume to the host OS, and
> how Docker is mapping those and handling filename casing, etc. My MacOS
> file system is APFS, Encrypted (and I thought I had case sensitivity
> enabled, but I can no longer see that option -- maybe not an option for
> APFS).
>
> I will try to confirm suspicions and provide details in a few hours
> (hopefully -- got a few meetings today that will get in the way).
>
> Thanks again,
>
> Robert
>
>
> On Tue, Feb 8, 2022 at 8:51 AM Mark Thomas <ma...@apache.org> wrote:
>
>> Robert,
>>
>> I agree this is something to do with the Docker environment.
>>
>> I think case insensitivity is involved somewhere as I can trigger the
>> error if I copy my equivalent of Failure.class to failure.class and then
>> call the JSP.
>>
>> I understand why it only occurs for * imports. In that instance, Tomcat
>> has to check if the class can be loaded from each of the imported
>> packages. Tomcat checks the file system first as that is faster than
>> trying (and failing) to load a class. The file system checks are
>> designed to be case sensitive - even on case insensitive file systems.
>> Something seems to be going wrong here and I'm still not sure what.
>>
>> I have tried to recreate this on AWS without success. If you have time,
>> I think we'd need the following to dig into this further:
>>
>> - Source for the simplest possible test WAR that demonstrates this
>> issue. I think a single class and a single JSP page should be
>> sufficient.
>>
>> - The WAR you created from the above (to rule out any build issues).
>>
>> - A minimal Dockerfile to create a Tomcat instance that demonstrates
>> this issue. Should just copy the WAR to the container and start it
>> with JPDA enabled.
>>
>> - Which AMI you used to create the AWS instance. I'm using the AWS free
>> tier so I used a t2.micro instance with
>> amzn2-ami-kernel-5.10-hvm-2.0.20220121.0-x86_64-gp2
>>
>> Thanks,
>>
>> Mark
>>
>>
>> On 08/02/2022 13:24, Robert Turner wrote:
>> > One thing to add is that my "conclusion" about OS variances I believe
>> to be
>> > incorrect. Our tests typically run on Linux, so I think it's still
>> > something to do with a difference in the Docker-based environment.
>> >
>> > Let me know if you need any more details on anything...(but I suspect
>> with
>> > a debugger up on the Expression Resolvers, you will at least narrow it
>> down
>> > quickly...)
>> >
>> > On Tue, Feb 8, 2022 at 7:55 AM Robert Turner <rtur...@e-djuster.ca>
>> wrote:
>> >
>> >> Thanks Mark. Much appreciated.
>> >>
>> >> On Tue., Feb. 8, 2022, 04:06 Mark Thomas, <ma...@apache.org> wrote:
>> >>
>> >>> Robert,
>> >>>
>> >>> Thank you for putting the effort in to debugging this. Narrowing down
>> >>> the issue to a simple test case is extremely helpful.
>> >>>
>> >>> The behaviour you describe looks odd to me. I'd expect consistent
>> >>> behaviour across platforms irrespective of the case sensitivity of the
>> >>> file system in use.
>> >>>
>> >>> I'm going to use your test case to investigate this further. I'll
>> report
>> >>> back here with my findings - hopefully later today.
>> >>>
>> >>> Mark
>> >>>
>> >>>
>> >>> On 08/02/2022 03:29, Robert Turner wrote:
>> >>>> Okay, so I have finally narrowed it down the trivial failure case,
>> and I
>> >>>> think I have an explanation as a result:
>> >>>>
>> >>>> [1] works (in docker), and [2] fails (in docker) but works outside.
>> The
>> >>>> difference between the two is the import directive being a wildcard
>> >>> (ugly,
>> >>>> but historical in our app in some places we haven't yet cleaned up).
>> >>>>
>> >>>> I am therefore speculating based on the Expression Language
>> >>> specification
>> >>>> that because the class wasn't explicitly imported, it's not in the
>> list
>> >>> of
>> >>>> available classes for static class resolution, and thus it fails.
>> >>>> Combine this with MacOS and Windows not caring about filename cases,
>> and
>> >>>> Linux caring, then I suspect it's just matching differently in both
>> >>> cases.
>> >>>>
>> >>>> Workaround/fix would be:
>> >>>> - to ensure we explicitly import the class (instead or in addition to
>> >>> the
>> >>>> wildcard)
>> >>>> OR
>> >>>> - rename the attribute so it doesn't map directly to the class name.
>> >>>>
>> >>>>
>> >>>> So I think I can bring my overly-detailed thread to an end...unless
>> my
>> >>>> guess at the reasoning is incorrect and someone has a better
>> >>> explanation.
>> >>>>
>> >>>> Thanks Rob S and Neil for having a look and providing suggestions --
>> in
>> >>>> part, it was something related to what you both said, but I believe
>> in
>> >>>> different contexts than you expected.
>> >>>>
>> >>>> Robert
>> >>>>
>> >>>>
>> >>>> [1]
>> >>>> $ cat src/main/webapp/index.jsp
>> >>>> <%@page contentType="text/html" pageEncoding="UTF-8"
>> >>> isELIgnored="false" %>
>> >>>> <%@page import="com.example.rt.Failing" %>
>> >>>> <%
>> >>>> final Failing failing = null;
>> >>>> pageContext.setAttribute("failing", failing);
>> >>>> %>
>> >>>> <html>
>> >>>> <body>
>> >>>> <h2>Hello World!</h2>
>> >>>>
>> >>>> <p>field1=${failing.field1}</p>
>> >>>> </body>
>> >>>>
>> >>>> [2]
>> >>>> $ cat src/main/webapp/index.jsp
>> >>>> <%@page contentType="text/html" pageEncoding="UTF-8"
>> >>> isELIgnored="false" %>
>> >>>> <%@page import="com.example.rt.*" %>
>> >>>> <%
>> >>>> final Failing failing = null;
>> >>>> pageContext.setAttribute("failing", failing);
>> >>>> %>
>> >>>> <html>
>> >>>> <body>
>> >>>> <h2>Hello World!</h2>
>> >>>>
>> >>>> <p>field1=${failing.field1}</p>
>> >>>> </body>
>> >>>>
>> >>>>
>> >>>>
>> >>>> On Mon, Feb 7, 2022 at 10:14 PM Robert Turner <rtur...@e-djuster.ca>
>> >>> wrote:
>> >>>>
>> >>>>> So back to a divide and conquer approach I think.
>> >>>>>
>> >>>>> I just created a trivial "example" [1] and it works as expected
>> (i.e.
>> >>> no
>> >>>>> exception was generated) (on the same servers I was testing the
>> >>> complex JAR
>> >>>>> file) -- so possibly something else modifying the behaviour -- a JAR
>> >>> on the
>> >>>>> classpath, or something in the JSP file...
>> >>>>>
>> >>>>> [1]
>> >>>>>
>> >>>>> $ cat src/main/webapp/index.jsp
>> >>>>> <%@page contentType="text/html" pageEncoding="UTF-8"
>> >>> isELIgnored="false" %>
>> >>>>> <%@page import="com.example.rt.Failing"%>
>> >>>>> <%
>> >>>>> final Failing failing = null;
>> >>>>> pageContext.setAttribute("failing", failing);
>> >>>>> %>
>> >>>>> <html>
>> >>>>> <body>
>> >>>>> <h2>Hello World!</h2>
>> >>>>>
>> >>>>> <p>field1=${failing.field1}</p>
>> >>>>> </body>
>> >>>>> </html>
>> >>>>>
>> >>>>> $ cat src/main/java/com/example/rt/Failing.java
>> >>>>> package com.example.rt;
>> >>>>>
>> >>>>> public class Failing {
>> >>>>>
>> >>>>> private final String field1 = "field1_value";
>> >>>>>
>> >>>>> public String getField1() {
>> >>>>> return field1;
>> >>>>> }
>> >>>>>
>> >>>>> }
>> >>>>>
>> >>>>>
>> >>>>>
>> >>>>> On Mon, Feb 7, 2022 at 9:51 PM Robert Turner <rtur...@e-djuster.ca>
>> >>> wrote:
>> >>>>>
>> >>>>>> I'm just avoiding sharing product details or things I think only
>> >>> serves
>> >>>>>> to confuse the problem. Sorry if you felt I wasn't sharing. It
>> wasn't
>> >>> my
>> >>>>>> intention to be obtuse. I didn't believe they added any value for
>> the
>> >>>>>> diagnostics (of course that assumes I know enough about the
>> problem).
>> >>>>>>
>> >>>>>> However, since you think they might be useful, here they the name
>> >>> mapping
>> >>>>>> from the exception and the Java and JSP code excerpts:
>> >>>>>>
>> >>>>>> "package1" -> "model"
>> >>>>>> "Class1" -> "Organization"
>> >>>>>> "class1" -> "organization"
>> >>>>>>
>> >>>>>> The class is present in the package (see [1]) -- otherwise it
>> wouldn't
>> >>>>>> work in one environment and not the other -- I believe I have
>> >>> confirmed
>> >>>>>> that carefully. Full class paths (with path-names relativised to
>> >>> compare
>> >>>>>> between environments) listed below [2], and the code that emitted
>> the
>> >>>>>> listing is here [3]. I post-processed the log lines as follows [4].
>> >>> Docker
>> >>>>>> file for the Tomcat container provided [5]. JDK details listed in
>> [6].
>> >>>>>> Tomcat version is 9.0.58 in all cases.
>> >>>>>>
>> >>>>>> What seems to be different is:
>> >>>>>> - the way the EL resolver is working
>> >>>>>> OR
>> >>>>>> - the behaviour of the class loader differs in the different
>> >>>>>> environments.
>> >>>>>> OR
>> >>>>>> - something else I do not understand is relevant
>> >>>>>>
>> >>>>>> The working environments are MacOS and Windows, and the failing
>> >>>>>> environment is either Debian or AWS Linux 2 running in a docker
>> >>> container.
>> >>>>>> If the class loaders behaviour differently, then that could explain
>> >>> the
>> >>>>>> issues, however, that would surprise me if they differed in any
>> >>> material
>> >>>>>> way on the different platforms.
>> >>>>>>
>> >>>>>> I hope that helps provide more detail that might be useful...
>> >>>>>>
>> >>>>>> Robert
>> >>>>>>
>> >>>>>>
>> >>>>>> [1]
>> >>>>>> $ unzip -l target/app.war | grep "model\/Organization\.class"
>> >>>>>> 66246 02-07-2022 20:17
>> >>> WEB-INF/classes/model/Organization.class
>> >>>>>>
>> >>>>>>
>> >>>>>> [2]
>> >>>>>> java.class.path=/bin/bootstrap.jar:/bin/tomcat-juli.jar
>> >>>>>> Class loader URLs:
>> >>>>>> Class loader
>> >>> name=org.apache.catalina.loader.ParallelWebappClassLoader,
>> >>>>>> URL count=146
>> >>>>>> URL=file:/WEB-INF/classes/
>> >>>>>> URL=file:/WEB-INF/lib/FastInfoset-1.2.18.jar
>> >>>>>> URL=file:/WEB-INF/lib/SparseBitSet-1.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/VeracodeAnnotations-1.2.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/activation-1.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/animal-sniffer-annotations-1.20.jar
>> >>>>>> URL=file:/WEB-INF/lib/annotations-4.1.1.4.jar
>> >>>>>> URL=file:/WEB-INF/lib/api-common-2.0.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/auto-value-annotations-1.8.2.jar
>> >>>>>>
>> URL=file:/WEB-INF/lib/avatax-rest-v2-api-java_2.11-21.12.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/aws-java-sdk-core-1.12.145.jar
>> >>>>>> URL=file:/WEB-INF/lib/aws-java-sdk-kms-1.12.145.jar
>> >>>>>> URL=file:/WEB-INF/lib/aws-java-sdk-s3-1.12.145.jar
>> >>>>>> URL=file:/WEB-INF/lib/bcmail-jdk15on-1.70.jar
>> >>>>>> URL=file:/WEB-INF/lib/bcpkix-jdk15on-1.70.jar
>> >>>>>> URL=file:/WEB-INF/lib/bcprov-jdk15on-1.70.jar
>> >>>>>> URL=file:/WEB-INF/lib/bcutil-jdk15on-1.70.jar
>> >>>>>> URL=file:/WEB-INF/lib/castor-core-1.4.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/castor-xml-1.4.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/checker-qual-3.5.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-beanutils-1.9.4.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-codec-1.15.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-collections-3.2.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-collections4-4.4.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-compress-1.21.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-digester-2.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-fileupload-1.4.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-io-2.11.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-lang3-3.12.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-logging-1.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-math3-3.6.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/commons-text-1.9.jar
>> >>>>>> URL=file:/WEB-INF/lib/conscrypt-openjdk-uber-2.5.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/curvesapi-1.06.jar
>> >>>>>> URL=file:/WEB-INF/lib/ecj-3.21.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/encoder-1.2.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/encoder-jsp-1.2.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/error_prone_annotations-2.9.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/failureaccess-1.0.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/fontbox-2.0.25.jar
>> >>>>>> URL=file:/WEB-INF/lib/gax-2.3.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/gax-grpc-2.3.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/gmbal-api-only-4.0.3.jar
>> >>>>>>
>> URL=file:/WEB-INF/lib/google-auth-library-credentials-1.1.0.jar
>> >>>>>>
>> URL=file:/WEB-INF/lib/google-auth-library-oauth2-http-1.1.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/google-cloud-speech-1.30.5.jar
>> >>>>>> URL=file:/WEB-INF/lib/google-http-client-1.39.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/google-http-client-gson-1.39.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/googleauth-1.5.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-alts-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-api-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-auth-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-context-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-core-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-grpclb-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-netty-shaded-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-protobuf-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-protobuf-lite-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/grpc-stub-1.40.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/gson-2.8.9.jar
>> >>>>>> URL=file:/WEB-INF/lib/guava-31.0.1-jre.jar
>> >>>>>> URL=file:/WEB-INF/lib/ha-api-3.1.13.jar
>> >>>>>> URL=file:/WEB-INF/lib/handlebars-4.3.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/httpclient-4.5.13.jar
>> >>>>>> URL=file:/WEB-INF/lib/httpcore-4.4.15.jar
>> >>>>>> URL=file:/WEB-INF/lib/ion-java-1.0.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/ipaddress-5.3.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/itext-2.1.7.js9.jar
>> >>>>>> URL=file:/WEB-INF/lib/j2objc-annotations-1.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/jackson-annotations-2.13.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jackson-core-2.13.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jackson-databind-2.13.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jackson-dataformat-cbor-2.13.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jai-imageio-core-1.4.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/jakarta.activation-2.0.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jakarta.annotation-api-1.3.5.jar
>> >>>>>> URL=file:/WEB-INF/lib/jakarta.jws-api-2.1.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/jakarta.mail-1.6.7.jar
>> >>>>>> URL=file:/WEB-INF/lib/jakarta.xml.bind-api-2.3.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/jakarta.xml.soap-api-1.4.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/jakarta.xml.ws-api-2.3.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/jasperreports-6.18.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jasperreports-fonts-6.18.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/java-saml-2.8.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/java-saml-core-2.8.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/javax.activation-api-1.2.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/javax.annotation-api-1.3.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/javax.inject-1.jar
>> >>>>>> URL=file:/WEB-INF/lib/javax.mail-1.6.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/javax.xml.soap-api-1.4.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/jaxb-api-2.3.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jaxb-core-2.3.0.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jaxb-impl-2.3.5.jar
>> >>>>>> URL=file:/WEB-INF/lib/jaxws-api-2.3.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jaxws-rt-2.3.5.jar
>> >>>>>> URL=file:/WEB-INF/lib/jbig2-imageio-3.0.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/jcommon-1.0.24.jar
>> >>>>>> URL=file:/WEB-INF/lib/jempbox-1.8.16.jar
>> >>>>>> URL=file:/WEB-INF/lib/jettison-1.4.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jfreechart-1.0.19.jar
>> >>>>>> URL=file:/WEB-INF/lib/jmespath-java-1.12.145.jar
>> >>>>>> URL=file:/WEB-INF/lib/joda-time-2.10.6.jar
>> >>>>>> URL=file:/WEB-INF/lib/jsch-0.1.55.jar
>> >>>>>> URL=file:/WEB-INF/lib/jsoup-1.14.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/jsr181-api-1.0-MR1.jar
>> >>>>>> URL=file:/WEB-INF/lib/jsr305-3.0.2.jar
>> >>>>>>
>> >>>>>>
>> >>>
>> URL=file:/WEB-INF/lib/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar
>> >>>>>> URL=file:/WEB-INF/lib/log4j-api-2.17.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/log4j-core-2.17.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/log4j-slf4j-impl-2.17.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/log4j-web-2.17.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/management-api-3.2.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/metadata-extractor-2.16.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/mimepull-1.9.15.jar
>> >>>>>> URL=file:/WEB-INF/lib/opencensus-api-0.28.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/opencensus-contrib-http-util-0.28.0.jar
>> >>>>>>
>> URL=file:/WEB-INF/lib/owasp-java-html-sanitizer-20211018.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/pdfbox-2.0.25.jar
>> >>>>>> URL=file:/WEB-INF/lib/perfmark-api-0.23.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/poi-4.1.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/poi-ooxml-4.1.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/poi-ooxml-schemas-4.1.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/policy-2.7.10.jar
>> >>>>>> URL=file:/WEB-INF/lib/postgresql-42.3.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/proto-google-cloud-speech-v1-1.30.5.jar
>> >>>>>>
>> >>> URL=file:/WEB-INF/lib/proto-google-cloud-speech-v1p1beta1-0.83.5.jar
>> >>>>>> URL=file:/WEB-INF/lib/proto-google-common-protos-2.3.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/protobuf-java-3.17.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/protobuf-java-util-3.17.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/saaj-impl-1.5.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/scala-library-2.11.12.jar
>> >>>>>> URL=file:/WEB-INF/lib/slf4j-api-1.7.33.jar
>> >>>>>> URL=file:/WEB-INF/lib/stax-api-1.0.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/stax-ex-1.8.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/stax2-api-4.2.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/streambuffer-2.0.2.jar
>> >>>>>> URL=file:/WEB-INF/lib/taglibs-standard-impl-1.2.5.jar
>> >>>>>> URL=file:/WEB-INF/lib/taglibs-standard-spec-1.2.5.jar
>> >>>>>> URL=file:/WEB-INF/lib/threetenbp-1.3.5.jar
>> >>>>>> URL=file:/WEB-INF/lib/tika-core-2.2.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/tika-parser-image-module-2.2.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/tika-parser-xmp-commons-2.2.1.jar
>> >>>>>> URL=file:/WEB-INF/lib/woodstox-core-6.2.6.jar
>> >>>>>> URL=file:/WEB-INF/lib/xmlbeans-3.1.0.jar
>> >>>>>> URL=file:/WEB-INF/lib/xmlsec-2.2.3.jar
>> >>>>>> URL=file:/WEB-INF/lib/xmpcore-6.1.11.jar
>> >>>>>> Class loader name=java.net.URLClassLoader, URL count=33
>> >>>>>> URL=file:/lib/
>> >>>>>> URL=file:/lib/annotations-api.jar
>> >>>>>> URL=file:/lib/catalina-ant.jar
>> >>>>>> URL=file:/lib/catalina-ha.jar
>> >>>>>> URL=file:/lib/catalina-ssi.jar
>> >>>>>> URL=file:/lib/catalina-storeconfig.jar
>> >>>>>> URL=file:/lib/catalina-tribes.jar
>> >>>>>> URL=file:/lib/catalina.jar
>> >>>>>> URL=file:/lib/ecj-4.20.jar
>> >>>>>> URL=file:/lib/el-api.jar
>> >>>>>> URL=file:/lib/jasper-el.jar
>> >>>>>> URL=file:/lib/jasper.jar
>> >>>>>> URL=file:/lib/jaspic-api.jar
>> >>>>>> URL=file:/lib/jsp-api.jar
>> >>>>>> URL=file:/lib/servlet-api.jar
>> >>>>>> URL=file:/lib/tomcat-api.jar
>> >>>>>> URL=file:/lib/tomcat-coyote.jar
>> >>>>>> URL=file:/lib/tomcat-dbcp.jar
>> >>>>>> URL=file:/lib/tomcat-i18n-cs.jar
>> >>>>>> URL=file:/lib/tomcat-i18n-de.jar
>> >>>>>> URL=file:/lib/tomcat-i18n-es.jar
>> >>>>>> URL=file:/lib/tomcat-i18n-fr.jar
>> >>>>>> URL=file:/lib/tomcat-i18n-ja.jar
>> >>>>>> URL=file:/lib/tomcat-i18n-ko.jar
>> >>>>>> URL=file:/lib/tomcat-i18n-pt-BR.jar
>> >>>>>> URL=file:/lib/tomcat-i18n-ru.jar
>> >>>>>> URL=file:/lib/tomcat-i18n-zh-CN.jar
>> >>>>>> URL=file:/lib/tomcat-jdbc.jar
>> >>>>>> URL=file:/lib/tomcat-jni.jar
>> >>>>>> URL=file:/lib/tomcat-util-scan.jar
>> >>>>>> URL=file:/lib/tomcat-util.jar
>> >>>>>> URL=file:/lib/tomcat-websocket.jar
>> >>>>>> URL=file:/lib/websocket-api.jar
>> >>>>>> Class loader
>> name=jdk.internal.loader.ClassLoaders$AppClassLoader
>> >>>>>> Class loader
>> >>> name=jdk.internal.loader.ClassLoaders$PlatformClassLoader
>> >>>>>>
>> >>>>>>
>> >>>>>> [3]
>> >>>>>> private static void
>> >>> logClassLoaderUrls(org.apache.logging.log4j.Level
>> >>>>>> logLevel, ClassLoader cl) {
>> >>>>>> if (null == cl) {
>> >>>>>> return;
>> >>>>>> }
>> >>>>>> boolean loaderNameLogged = false;
>> >>>>>> if (cl instanceof URLClassLoader) {
>> >>>>>> final URLClassLoader urlCl = (URLClassLoader) cl;
>> >>>>>> final URL[] urls = urlCl.getURLs();
>> >>>>>> if (null != urls) {
>> >>>>>> LOG.log(logLevel, " Class loader name={}, URL
>> >>> count={}",
>> >>>>>> cl.getClass().getName(), urls.length);
>> >>>>>> loaderNameLogged = true;
>> >>>>>> for (int idx = 0; idx < urls.length; idx++) {
>> >>>>>> final URL url = urls[idx];
>> >>>>>> LOG.log(logLevel, " URL[{}]={}", idx,
>> url);
>> >>>>>> }
>> >>>>>> }
>> >>>>>> }
>> >>>>>> if (!loaderNameLogged) {
>> >>>>>> LOG.log(logLevel, " Class loader name={}",
>> >>>>>> cl.getClass().getName());
>> >>>>>> }
>> >>>>>> logClassLoaderUrls(logLevel, cl.getParent());
>> >>>>>> }
>> >>>>>>
>> >>>>>> ..snip..
>> >>>>>>
>> >>>>>> LOG.info("java.class.path={}",
>> >>>>>> System.getProperty("java.class.path"));
>> >>>>>> LOG.debug("Class loader URLs:");
>> >>>>>>
>> logClassLoaderUrls(org.apache.logging.log4j.Level.DEBUG,
>> >>>>>> ctx.getClassLoader());
>> >>>>>>
>> >>>>>>
>> >>>>>> [4]
>> >>>>>> cat log-extract.txt | cut -c137- | sed -e
>> >>> "s+/usr/local/tomcat++g" -e
>> >>>>>> "s+/usr/local/tomcat/webapps/exclaim++g" -e "s+\[[0-9]*\]++"
>> >>>>>> and I manually sorted the "sections" using vim, with the "sort"
>> >>> command.
>> >>>>>>
>> >>>>>>
>> >>>>>> [5]
>> >>>>>> # Debian with OpenJDK
>> >>>>>> #FROM tomcat:9.0.58-jre11-openjdk AS tomcat_package
>> >>>>>> # AWS Linux 2 with Corretto
>> >>>>>> FROM tomcat:9.0.58-jdk11-corretto AS tomcat_package
>> >>>>>>
>> >>>>>> # Set the timezone to Canada/Eastern
>> >>>>>> # For Debian
>> >>>>>> #RUN ln -sf /usr/share/zoneinfo/Canada/Eastern /etc/localtime &&
>> echo
>> >>>>>> "Canada/Eastern" > /etc/timezone && dpkg-reconfigure -f
>> noninteractive
>> >>>>>> tzdata
>> >>>>>> # For AWS Linux
>> >>>>>> RUN ln -sf /usr/share/zoneinfo/Canada/Eastern /etc/localtime &&
>> sed -i
>> >>>>>> 's/\"UTC\"/\"Canada\/Eastern\"/' /etc/sysconfig/clock # and reboot,
>> >>> but
>> >>>>>> will skip as container will be created and ran separately
>> >>>>>>
>> >>>>>> # Install a postgresql client for testing and the required font
>> >>> packages
>> >>>>>> needed by JasperReports
>> >>>>>> # For Debian:
>> >>>>>> #RUN echo "deb http://deb.debian.org/debian bullseye contrib
>> >>> non-free"
>> >>>>>>>> /etc/apt/sources.list && apt-get update && apt-get install -y
>> >>>>>> postgresql-client ttf-mscorefonts-installer
>> >>>>>> # For AWS Linux:
>> >>>>>> RUN yum -q list installed epel-release.noarch &>/dev/null && echo
>> >>>>>> 'epel-release already installed' || yum install -y
>> >>>>>>
>> >>>
>> https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
>> >>>>>> RUN yum install -y cabextract xorg-x11-font-utils fontconfig
>> >>>>>> RUN rpm -q msttcore-fonts-installer-2.6-1 &>/dev/null && echo
>> >>>>>> 'msttcore-fonts-installer-2.6-1 already installed' || rpm -i
>> >>>>>>
>> >>>
>> https://iweb.dl.sourceforge.net/project/mscorefonts2/rpms/msttcore-fonts-installer-2.6-1.noarch.rpm
>> >>>>>>
>> >>>>>> # Add a health-check script to wait for exclaim to be running --
>> >>> allow at
>> >>>>>> least 10 minutes for it to start
>> >>>>>> COPY health_check.sh /usr/local/bin/
>> >>>>>> HEALTHCHECK --interval=10s --timeout=5s --start-period=10m
>> >>> --retries=10
>> >>>>>> CMD /usr/local/bin/health_check.sh
>> >>>>>>
>> >>>>>> # Set up the resource folders needed by application and make it a
>> >>>>>> # volume so it persists across container restarts
>> >>>>>> COPY resources/ /resources/
>> >>>>>> VOLUME /resources
>> >>>>>>
>> >>>>>> # Map some of the Tomcat folders to volumes so they persist between
>> >>>>>> restarts of the container
>> >>>>>> VOLUME /usr/local/tomcat/logs
>> >>>>>> VOLUME /usr/local/tomcat/webapps
>> >>>>>> VOLUME /usr/local/tomcat/work
>> >>>>>> VOLUME /usr/local/tomcat/conf
>> >>>>>>
>> >>>>>> # Enable connecting from anywhere for JPDA (req'd for Java 9+)
>> >>>>>> ENV JPDA_ADDRESS=*:8000
>> >>>>>>
>> >>>>>> CMD ["catalina.sh","jpda","run"]
>> >>>>>>
>> >>>>>>
>> >>>>>> [6]
>> >>>>>> JDK on MacOS is:
>> >>>>>> openjdk version "11.0.13" 2021-10-19 LTS
>> >>>>>> OpenJDK Runtime Environment Corretto-11.0.13.8.1 (build
>> 11.0.13+8-LTS)
>> >>>>>> OpenJDK 64-Bit Server VM Corretto-11.0.13.8.1 (build 11.0.13+8-LTS,
>> >>> mixed
>> >>>>>> mode)
>> >>>>>>
>> >>>>>> JDK on Windows is:
>> >>>>>> openjdk 11.0.14 2022-01-18 LTS
>> >>>>>> OpenJDK Runtime Environment Corretto-11.0.14.9.1 (build
>> 11.0.14+9-LTS)
>> >>>>>> OpenJDK 64-Bit Server VM Corretto-11.0.14.9.1 (build 11.0.14+9-LTS,
>> >>> mixed
>> >>>>>> mode)
>> >>>>>>
>> >>>>>> JDK on Docker with AWS Linux 2 is:
>> >>>>>> openjdk 11.0.14 2022-01-18 LTS
>> >>>>>> OpenJDK Runtime Environment Corretto-11.0.14.9.1 (build
>> 11.0.14+9-LTS)
>> >>>>>> OpenJDK 64-Bit Server VM Corretto-11.0.14.9.1 (build 11.0.14+9-LTS,
>> >>> mixed
>> >>>>>> mode)
>> >>>>>>
>> >>>>>>
>> >>>>>>
>> >>>>>> On Mon, Feb 7, 2022 at 9:24 PM Rob Sargent <rsarg...@xmission.com>
>> >>> wrote:
>> >>>>>>
>> >>>>>>>
>> >>>>>>>
>> >>>>>>> On 2/7/22 19:13, Robert Turner wrote:
>> >>>>>>>> So, I've gone back and double-checked as much as I can (Tomcat
>> >>>>>>> version, JDK
>> >>>>>>>> version), and the classpath, and I have identical classpaths in
>> both
>> >>>>>>>> environments (except the sort order of the URLs per "level" of
>> >>>>>>>> ClassLoader), and I've re-verified the behaviour:
>> >>>>>>>> - fails in the docker environment
>> >>>>>>>> - works locally
>> >>>>>>>> (Same WAR file on both).
>> >>>>>>>>
>> >>>>>>>> I guess I'm in to one of the following approaches next:
>> >>>>>>>> - build a debug version of Tomcat, and step through the code
>> that
>> >>>>>>> breaks
>> >>>>>>>> and see if I can figure out why (not that I have time to do this
>> of
>> >>>>>>>> course...but might be necessary)
>> >>>>>>>> - construct a trivial application reproduction, along with
>> docker
>> >>>>>>> layout,
>> >>>>>>>> and see if anyone else can reproduce... (assuming anyone else has
>> >>> time
>> >>>>>>> to
>> >>>>>>>> do that of course...)
>> >>>>>>>>
>> >>>>>>>> Anyone got any suggestions of what to look into next?
>> >>>>>>>>
>> >>>>>>>>
>> >>>>>>>> On Mon, Feb 7, 2022 at 5:05 PM Rob Sargent <
>> rsarg...@xmission.com>
>> >>>>>>> wrote:
>> >>>>>>>>
>> >>>>>>>>
>> >>>>>>> As you appear averse to sharing names of things, seems you will
>> need
>> >>> to
>> >>>>>>> do a lot of extra clean-up before you can share a docker image.
>> Make
>> >>>>>>> sure you're clear on what NoClassDefFoundError indicates (present
>> at
>> >>>>>>> compile time, absent at runtime) and how that translates to
>> >>> docker-ness
>> >>>>>>> (of which I know naught).
>> >>>>>>>
>> >>>>>>>
>> >>>>>>>
>> ---------------------------------------------------------------------
>> >>>>>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
>> >>>>>>> For additional commands, e-mail: users-h...@tomcat.apache.org
>> >>>>>>>
>> >>>>>>>
>> >>>>
>> >>>
>> >>> ---------------------------------------------------------------------
>> >>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
>> >>> For additional commands, e-mail: users-h...@tomcat.apache.org
>> >>>
>> >>>
>> >
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
>> For additional commands, e-mail: users-h...@tomcat.apache.org
>>
>>
