Problems Running on Linux Mint / Ubuntu

[7enderhead]

>cat /etc/os-release 
NAME="Linux Mint"
VERSION="20.3 (Una)"
ID=linuxmint
ID_LIKE=ubuntu
PRETTY_NAME="Linux Mint 20.3"
VERSION_ID="20.3"
HOME_URL="https://www.linuxmint.com/"
SUPPORT_URL="https://forums.linuxmint.com/"
BUG_REPORT_URL="http://linuxmint-troubleshooting-guide.readthedocs.io/en/latest/"
PRIVACY_POLICY_URL="https://www.linuxmint.com/"
VERSION_CODENAME=una
UBUNTU_CODENAME=focal

• commit f8cac5485b47e3b0015e843c4f14da7a3eb6f851 builds into 0.2-SNAPSHOT (not 0.1-SNAPSHOT as per documentation)

• running produces a NoClassDefFoundError:

  >java -cp ~/.m2/repository/org/antlr/antlr4-lab/0.2-SNAPSHOT/antlr4-lab-0.2-SNAPSHOT.jar org.antlr.v4.server.ANTLRHttpServer
  Error: Unable to initialize main class org.antlr.v4.server.ANTLRHttpServer
  Caused by: java.lang.NoClassDefFoundError: org/eclipse/jetty/util/thread/ThreadPool

  • the maven dependency tree for jetty libs looks ok to me:

    >mvn dependency:tree -Dincludes=org.eclipse.jetty
    [...]
    [INFO] ------------------------< org.antlr:antlr4-lab >------------------------
    [INFO] Building ANTLR 4 Server 0.2-SNAPSHOT
    [INFO] --------------------------------[ jar ]---------------------------------
    [INFO] 
    [INFO] --- maven-dependency-plugin:2.8:tree (default-cli) @ antlr4-lab ---
    [INFO] org.antlr:antlr4-lab:jar:0.2-SNAPSHOT
    [INFO] +- org.eclipse.jetty:jetty-server:jar:11.0.11:compile
    [INFO] |  +- org.eclipse.jetty:jetty-http:jar:11.0.11:compile
    [INFO] |  |  \- org.eclipse.jetty:jetty-util:jar:11.0.11:compile
    [INFO] |  \- org.eclipse.jetty:jetty-io:jar:11.0.11:compile
    [INFO] \- org.eclipse.jetty:jetty-webapp:jar:11.0.11:compile
    [INFO]    +- org.eclipse.jetty:jetty-servlet:jar:11.0.11:compile
    [INFO]    |  \- org.eclipse.jetty:jetty-security:jar:11.0.11:compile
    [INFO]    \- org.eclipse.jetty:jetty-xml:jar:11.0.11:compile
    [INFO] ------------------------------------------------------------------------

[parrt]

hi. That's likely an issue with the use of ~ from the command line... Please use the full path to the jar file and it should work

[parrt]

Although I just noticed that I've been using ~. hmm... yeah, that should work. did you mvn install first?

[7enderhead]

• I substituted the ~ manually to not share my username... it actually runs from /home/xyz
• yes, I ran mvn install first:

  >mvn install | grep jetty
  [...]
  [INFO] Including org.eclipse.jetty:jetty-server:jar:11.0.11 in the shaded jar.
  [INFO] Including org.eclipse.jetty.toolchain:jetty-jakarta-servlet-api:jar:5.0.2 in the shaded jar.
  [INFO] Including org.eclipse.jetty:jetty-http:jar:11.0.11 in the shaded jar.
  [INFO] Including org.eclipse.jetty:jetty-util:jar:11.0.11 in the shaded jar.
  [INFO] Including org.eclipse.jetty:jetty-io:jar:11.0.11 in the shaded jar.
  [INFO] Including org.eclipse.jetty:jetty-webapp:jar:11.0.11 in the shaded jar.
  [INFO] Including org.eclipse.jetty:jetty-servlet:jar:11.0.11 in the shaded jar.
  [INFO] Including org.eclipse.jetty:jetty-security:jar:11.0.11 in the shaded jar.
  [INFO] Including org.eclipse.jetty:jetty-xml:jar:11.0.11 in the shaded jar.

[parrt]

This is very strange. Definitely just a class path issue and not related to the tool though... This is the command I used to executed on the server:

sudo -E nohup java -cp ~/.m2/repository/org/antlr/antlr4-lab/0.2-SNAPSHOT/antlr4-lab-0.2-SNAPSHOT-complete.jar org.antlr.v4.server.ANTLRHttpServer

oh, do you have the -complete on there?

[7enderhead]

Uhh, my bad. Surely enough I did not run the -complete.jar... that fixed it!

[parrt]

cool!