78 lines
2.3 KiB
Java
78 lines
2.3 KiB
Java
package biz.nellemann.syslogd;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import picocli.CommandLine;
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import picocli.CommandLine.Command;
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import java.util.concurrent.Callable;
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@Command(name = "syslogd", mixinStandardHelpOptions = true, version = "syslogd 1.0",
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description = "Simple syslog server that prints messages to stdout.")
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public class SyslogServer implements Callable<Integer>, LogListener {
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private final static Logger log = LoggerFactory.getLogger(SyslogServer.class);
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@CommandLine.Option(names = {"-p", "--port"}, description = "Listening port, 514 by default.")
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private int port = 8080;
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@CommandLine.Option(names = "--no-udp", negatable = true, description = "Listen on UDP, true by default.")
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boolean udpServer = true;
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@CommandLine.Option(names = "--no-tcp", negatable = true, description = "Listen on TCP, true by default.")
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boolean tcpServer = true;
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@CommandLine.Option(names = "--rfc3164", negatable = true, description = "Parse rfc3164 syslog message, false by default.")
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boolean rfc3164 = false;
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@CommandLine.Option(names = "--no-rfc5424", negatable = true, description = "Parse rfc5424 syslog message, true by default.")
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boolean rfc5424 = true;
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public static void main(String... args) {
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int exitCode = new CommandLine(new SyslogServer()).execute(args);
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System.exit(exitCode);
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}
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@Override
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public Integer call() throws Exception {
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if(udpServer) {
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UdpServer udpServer = new UdpServer(port);
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udpServer.addEventListener(this);
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udpServer.start();
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}
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if(tcpServer) {
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TcpServer tcpServer = new TcpServer(port);
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tcpServer.addEventListener(this);
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tcpServer.start();
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}
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return 0;
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}
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@Override
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public void onLogEvent(LogEvent event) {
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String message = event.getMessage();
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SyslogMessage msg = null;
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try {
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if(rfc5424) {
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msg = SyslogParser.parseRfc5424(message);
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} else if(rfc3164) {
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msg = SyslogParser.parseRfc3164(message);
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}
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} catch(Exception e) {
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log.error("Problem parsing message: ", e);
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}
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if(msg != null) {
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System.out.println(msg);
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}
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}
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}
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