Is there a way to get the actual jline terminal object in a Karaf command?
I want to format the command output depending on the terminal width.
I'm on Ubuntu 16.04, Java 1.8.0_60-x64, and Karaf 3.0.5.
This one
package org.example;
import jline.TerminalFactory;
import org.apache.karaf.shell.commands.Command;
import org.apache.karaf.shell.console.OsgiCommandSupport;
@Command(scope = "example", name = "term-wdith", description = "get the terminal
width")
public class TermWidthCmd extends OsgiCommandSupport{
protected Object doExecute() throws Exception {
int w = TerminalFactory.get().getTerminalWidth();
return null;
}
}
gives:
| 2016-12-07 10:10:17,443 | ERROR | l for user karaf | ShellUtil
| 27 - org.apache.karaf.shell.console - 3.0.5 | Exception caught while
executing command
| java.lang.IncompatibleClassChangeError: Found interface jline.Terminal, but
class was expected
| at org.example.TermWidthCmd.doExecute(TermWidthCmd.java:11)
| at
org.apache.karaf.shell.console.AbstractAction.execute(AbstractAction.java:33)
| at
org.apache.karaf.shell.console.OsgiCommandSupport.execute(OsgiCommandSupport.java:39)
| at
org.apache.karaf.shell.commands.basic.AbstractCommand.execute(AbstractCommand.java:33)
| at Proxy68e7a8f7_5f52_4001_8cfa_f4b37a3fc958.execute(Unknown Source)
| at Proxy68e7a8f7_5f52_4001_8cfa_f4b37a3fc958.execute(Unknown Source)
| at
org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:78)
| at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:480)
| at
org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:406)
| at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)
| at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:182)
| at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:119)
| at
org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:94)
| at
org.apache.karaf.shell.console.impl.jline.ConsoleImpl.run(ConsoleImpl.java:210)
| at
org.apache.karaf.shell.console.impl.jline.LocalConsoleManager$2$1$1.run(LocalConsoleManager.java:109)
| at java.security.AccessController.doPrivileged(Native Method)[:1.8.0_60]
| at
org.apache.karaf.jaas.modules.JaasHelper.doAs(JaasHelper.java:57)[28:org.apache.karaf.jaas.modules:3.0.5]
| at
org.apache.karaf.shell.console.impl.jline.LocalConsoleManager$2$1.run(LocalConsoleManager.java:102)[27:org.apache.karaf.shell.console:3.0.5]
The 2nd approach
package org.example;
import jline.NoInterruptUnixTerminal;
import jline.Terminal;
import org.apache.karaf.shell.commands.Command;
import org.apache.karaf.shell.console.OsgiCommandSupport;
@Command(scope = "example", name = "term-wdith", description = "get the terminal
width")
public class TermWidthCmd extends OsgiCommandSupport{
protected Object doExecute() throws Exception {
Terminal term = session != null ? (Terminal)
session.get(".jline.terminal") : null;
NoInterruptUnixTerminal uterm = (NoInterruptUnixTerminal)term;
int w = term.getTerminalWidth();
return null;
}
}
basically gives the same exception:
| 2016-12-07 10:09:11,964 | ERROR | l for user karaf | ShellUtil
| 27 - org.apache.karaf.shell.console - 3.0.5 | Exception caught while
executing command
| java.lang.IncompatibleClassChangeError: Found interface jline.Terminal, but
class was expected
| at org.example.TermWidthCmd.doExecute(TermWidthCmd.java:14)
| at
org.apache.karaf.shell.console.AbstractAction.execute(AbstractAction.java:33)
| at
org.apache.karaf.shell.console.OsgiCommandSupport.execute(OsgiCommandSupport.java:39)
| at
org.apache.karaf.shell.commands.basic.AbstractCommand.execute(AbstractCommand.java:33)
| at Proxy1c55bc35_2cb4_47b2_b9f4_f593e49a68ce.execute(Unknown Source)
| at Proxy1c55bc35_2cb4_47b2_b9f4_f593e49a68ce.execute(Unknown Source)
| at
org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:78)
| at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:480)
| at
org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:406)
| at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)
| at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:182)
| at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:119)
| at
org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:94)
| at
org.apache.karaf.shell.console.impl.jline.ConsoleImpl.run(ConsoleImpl.java:210)
| at
org.apache.karaf.shell.console.impl.jline.LocalConsoleManager$2$1$1.run(LocalConsoleManager.java:109)
| at java.security.AccessController.doPrivileged(Native Method)[:1.8.0_60]
| at
org.apache.karaf.jaas.modules.JaasHelper.doAs(JaasHelper.java:57)[28:org.apache.karaf.jaas.modules:3.0.5]
| at
org.apache.karaf.shell.console.impl.jline.LocalConsoleManager$2$1.run(LocalConsoleManager.java:102)[27:org.apache.karaf.shell.console:3.0.5]
What am I missing?
Thanks!
-Max
