OSGI Console Over telnet doesn't work

[dumindurox777]

Description:

We are facing the following error when trying to access the WSO2 OSGi console using Telnet.

Exception in thread "Thread-93" java.lang.NoSuchMethodError:
org.apache.felix.service.command.CommandProcessor.createSession(Ljava/io/InputStream;Ljava/io/OutputStream;Ljava/io/OutputStream;)Lorg/apache/felix/service/command/CommandSession;
Exception in thread "Thread-93" java.lang.NoSuchMethodError:
org.apache.felix.service.command.CommandProcessor.createSession(Ljava/io/InputStream;Ljava/io/OutputStream;Ljava/io/OutputStream;)Lorg/apache/felix/service/command/CommandSession; 
at org.eclipse.equinox.console.telnet.TelnetConnection.run(TelnetConnection.java:90)

Steps to reproduce:

1. Start the server as follows. ./wso2server.sh -DosgiConsole=2500
2. Telnet the connection as follows telnet <ip_address> 2500

Affected Product Version:

APIM-3.1.0

Environment details (with versions):

• OS:
• Client:
• Env (Docker/K8s):

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Optional Fields

Related Issues:

https://issues.apache.org/jira/browse/FELIX-6021

Suggested Labels:

Suggested Assignees:

[ruwanta]

OSGI console access via telnet is an undocumented and can not see a real requirement. Please use SSH on remote server to access the remote console itself. You can do any task via SSH.

I do not see any real requirement on this request.

[kakash1hatake]

I disagree, because accessing via telnet is officially documented in equinox

This feature is very convenient for debugging bundle loading problems in docker/k8s environments where container typically doesn't have sshd.

After some debugging I managed to make it working. The problem is in the org.eclipse.equinox.console_1.3.300.v20190516-1504.jar in the TelnetConnection.java:90 change line 90 from

CommandSession session = this.processor.createSession((InputStream)inp, output, output);

to

CommandSession session = this.processor.createSession((InputStream)inp, (PrintStream)output, (PrintStream)output);

[kakash1hatake]

The problem occurs also in the APIM-4.0.0

[kakash1hatake]

If someone wants to access console via ssh, then additional components needed to be deployed (they are not included into APIM) and additional configuration via properties

• org.apache.sshd.osgi
• org.eclipse.equinox.console.jaas.fragment
• org.eclipse.equinox.console.ssh

[kakash1hatake]

@ruwanta It would be nice if this tiny bug was solved.