server/container/guice/protocols/lmtp/src/main/java/org/apache/james/modules/protocols/LmtpGuiceProbe.java

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package org.apache.james.modules.protocols;

import java.net.InetSocketAddress;

import javax.inject.Inject;

import org.apache.james.lmtpserver.netty.LMTPServerFactory;
import org.apache.james.utils.GuiceProbe;


public class LmtpGuiceProbe implements GuiceProbe {

    private final LMTPServerFactory lmtpServerFactory;

    @Inject
    private LmtpGuiceProbe(LMTPServerFactory lmtpServerFactory) {
        this.lmtpServerFactory = lmtpServerFactory;
    }

    public int getLmtpPort() {
        return lmtpServerFactory.getServers().stream()
                .findFirst()
                .flatMap(server -> server.getListenAddresses().stream().findFirst())
                .map(InetSocketAddress::getPort)
                .orElseThrow(() -> new IllegalStateException("LMTP server not defined"));
    }
}