44 lines
1.6 KiB
Java
44 lines
1.6 KiB
Java
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package Repository.Server;
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import org.apache.commons.io.FileUtils;
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import sun.misc.Signal;
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import sun.misc.SignalHandler;
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import java.io.File;
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import java.util.Date;
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public class DiagnosticSignalHandler implements SignalHandler {
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private SignalHandler oldHandler;
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private SignalHandler handler;
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public DiagnosticSignalHandler() {
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}
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// Static method to install the signal handler
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public static void install(String signalName, SignalHandler handler) {
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Signal signal = new Signal(signalName);
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DiagnosticSignalHandler diagnosticSignalHandler = new DiagnosticSignalHandler();
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SignalHandler oldHandler = Signal.handle(signal, diagnosticSignalHandler);
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diagnosticSignalHandler.setHandler(handler);
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diagnosticSignalHandler.setOldHandler(oldHandler);
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}
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private void setOldHandler(SignalHandler oldHandler) {
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this.oldHandler = oldHandler;
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}
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private void setHandler(SignalHandler handler) {
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this.handler = handler;
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}
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// Signal handler method
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// Signal handler method
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@Override
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public void handle(Signal sig) {
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System.out.println("Diagnostic Signal handler called for signal " + sig);
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try {
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FileUtils.writeStringToFile(new File("got SIG" + sig.getName() + " " + new Date().toString().replace(':', '_')), "");
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handler.handle(sig);
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// Chain back to previous handler, if one exists
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if (oldHandler != SIG_DFL && oldHandler != SIG_IGN) {
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oldHandler.handle(sig);
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}
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} catch (Exception e) {
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System.out.println("Signal handler failed, reason " + e);
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}
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}
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}
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