Standby detection poc

Former-commit-id: a32cfd23

plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/runtime/jobs/KeepAliveListenerJob.java

@@ -38,12 +38,14 @@ import java.util.*;
 public class KeepAliveListenerJob extends AbstractJob
 {
     private static final int MONITOR_INTERVAL = 3000; // once per 3 seconds
+    private static final long SYSTEM_SUSPEND_INTERVAL = 30000; // 30 seconds of inactivity - most likely a system suspend
 
     private static final Log log = Log.getLog(KeepAliveListenerJob.class);
 
     private final DBPPlatform platform;
     private Map<String, Long> checkCache = new HashMap<>();
     private final Set<String> pingCache = new HashSet<>();
+    private long lastPingTime = -1;
 
     public KeepAliveListenerJob(DBPPlatform platform)
     {
@@ -59,6 +61,11 @@ public class KeepAliveListenerJob extends AbstractJob
         if (platform.isShuttingDown()) {
             return Status.OK_STATUS;
         }
+        if (lastPingTime > 0 && System.currentTimeMillis() - lastPingTime > SYSTEM_SUSPEND_INTERVAL) {
+            log.debug("System suspend detected! Reinitialize all remote connections.");
+        }
+        lastPingTime = System.currentTimeMillis();
+
         final DBPWorkspace workspace = platform.getWorkspace();
         for (DBPProject project : workspace.getProjects()) {
             if (project.isOpen() && project.isRegistryLoaded()) {

test/org.jkiss.dbeaver.ext.test/src/org/jkiss/dbeaver/ext/test/desktop/Win32WindowDemo.java

@@ -107,6 +107,7 @@ public class Win32WindowDemo implements WindowProc {
             }
             case WM_POWERBROADCAST: {
                 // FIXME: it doesn't work!!
+                System.out.println("Power event");
                 if (wParam.intValue() == PBT_APMQUERYSUSPEND)
                 {
                     onSuspend(wParam, lParam);