Logstash 8.15.2 Imap Input plugin SSL Error

Elastic Stack Logstash
1

Hello,

I’m running logstash 8.15.2 and running into the below IMAP input plugin error.

Encountered error Java::JavaLang::NullPointerException {:message=>"Cannot invoke "org.jruby.ext.openssl.SSLContext$InternalContext.getSSLContext()" because "this.internalContext" is null", :backtrace=>["org.jruby.ext.openssl.SSLContext.createSSLEngine(SSLContext.java:784)", "org.jruby.ext.openssl.SSLSocket.ossl_ssl_setup(SSLSocket.java:221)", "org.jruby.ext.openssl.SSLSocket.connectImpl(SSLSocket.java:299)", "org.jruby.ext.openssl.SSLSocket.connect_nonblock(SSLSocket.java:288)", "org.jruby.ext.openssl.SSLSocket$INVOKER$i$connect_nonblock.call(SSLSocket$INVOKER$i$connect_nonblock.gen)", "org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:466)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:244)", "org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:314)", "org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:66)", "org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:88)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:238)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:225)", "org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:228)", "org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:476)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:293)", "org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:324)", "org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:66)", "org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:76)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:164)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:151)",

I can confirm my IMAP server supports SSL/TLS.

image

I see from previous posts regarding this error it states to downgrade to logstash 8.9. But this didn’t resolve the problem for everyone.

My config is below

input {

imap {

    host => "imap.gmail.com"

    port => 993

    user => "user@gmail.com"

    password => "${imap_pwd}"

    check_interval => 300

    folder => "INBOX"

    secure => true

}

}

Please advise on how I can resolve this issue.

2

First you need to upgrade to the last version, 8.19.2 to see if this issue still exists or if it was already fixed.

3

ok. Let me try that and will advise

4

It is not clear to me that the imap input is supported. There is an issue that appears to say it will not work with any 8.10+ logstash version due to changes in the libraries it depends upon, and making any updates to the plugin requires re-architecting the test suite. There have been no changes checked in for the last two years, and I wouldn’t hold my breath waiting for any to come.