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).
>> >>>>
>> >>>>
>> >>>> ---------------------------------------------------------------------
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>> >>>> For additional commands, e-mail: users-h...@tomcat.apache.org
>> >>>>
>> >>>>
>> >
>>
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>>
