Move listener to component, see comments in IDEA-CR-33698

FUS-87 IDE and Project Lifecycle

platform/platform-impl/src/com/intellij/diagnostic/LowMemoryNotifier.java

 // Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.diagnostic;
 
+import com.intellij.featureStatistics.fusCollectors.AppLifecycleUsageTriggerCollector;
 import com.intellij.ide.IdeBundle;
+import com.intellij.internal.statistic.eventLog.FeatureUsageLogger;
+import com.intellij.internal.statistic.service.fus.collectors.FUSApplicationUsageTrigger;
 import com.intellij.notification.Notification;
 import com.intellij.notification.NotificationAction;
 import com.intellij.notification.NotificationType;
 import com.intellij.notification.Notifications;
 import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.components.ApplicationComponent;
 import com.intellij.openapi.util.LowMemoryWatcher;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.Collections;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 import static com.intellij.openapi.util.LowMemoryWatcher.LowMemoryWatcherType.ONLY_AFTER_GC;
@@ -19,6 +24,19 @@ public class LowMemoryNotifier implements ApplicationComponent {
   private final LowMemoryWatcher myWatcher = LowMemoryWatcher.register(this::onLowMemorySignalReceived, ONLY_AFTER_GC);
   private final AtomicBoolean myNotificationShown = new AtomicBoolean();
 
+  @Override
+  public void initComponent() {
+    IdePerformanceListener.Adapter handler = new IdePerformanceListener.Adapter() {
+      @Override
+      public void uiFreezeFinished(int lengthInSeconds) {
+        FUSApplicationUsageTrigger.getInstance().trigger(AppLifecycleUsageTriggerCollector.class, "ide.freeze");
+        FeatureUsageLogger.INSTANCE.log("lifecycle",
+                                        "ide.freeze", Collections.singletonMap("durationSeconds", lengthInSeconds));
+      }
+    };
+    ApplicationManager.getApplication().getMessageBus().connect().subscribe(IdePerformanceListener.TOPIC, handler);
+  }
+
   private void onLowMemorySignalReceived() {
     if (myNotificationShown.compareAndSet(false, true)) {
       Notification notification = new Notification(IdeBundle.message("low.memory.notification.title"),

platform/platform-impl/src/com/intellij/featureStatistics/fusCollectors/UsageTriggerCollectionActivity.java

-// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
-package com.intellij.featureStatistics.fusCollectors;
-
-import com.intellij.diagnostic.IdePerformanceListener;
-import com.intellij.internal.statistic.eventLog.FeatureUsageLogger;
-import com.intellij.internal.statistic.service.fus.collectors.FUSApplicationUsageTrigger;
-import com.intellij.openapi.application.ApplicationManager;
-import com.intellij.openapi.application.PreloadingActivity;
-import com.intellij.openapi.progress.ProgressIndicator;
-import org.jetbrains.annotations.NotNull;
-
-import java.util.Collections;
-
-public class UsageTriggerCollectionActivity extends PreloadingActivity {
-  @Override
-  public void preload(@NotNull ProgressIndicator indicator) {
-    IdePerformanceListener.Adapter handler = new IdePerformanceListener.Adapter() {
-      @Override
-      public void uiFreezeFinished(int lengthInSeconds) {
-        FUSApplicationUsageTrigger.getInstance().trigger(AppLifecycleUsageTriggerCollector.class,
-                                                         "ide.freeze." + getLength(lengthInSeconds));
-        FeatureUsageLogger.INSTANCE.log("lifecycle",
-                                        "ide.freeze", Collections.singletonMap("durationSeconds", lengthInSeconds));
-      }
-
-      private String getLength(int seconds) {
-        if (seconds <= 1) {
-          return "0_1";
-        }
-        if (seconds <= 2) {
-          return "1_2";
-        }
-        if (seconds <= 5) {
-          return "2_5";
-        }
-        return "5_more";
-      }
-    };
-    ApplicationManager.getApplication().getMessageBus().connect().subscribe(IdePerformanceListener.TOPIC, handler);
-  }
-}

platform/platform-resources/src/META-INF/PlatformExtensions.xml

@@ -467,7 +467,6 @@
 
     <preloadingActivity implementation="com.intellij.openapi.actionSystem.impl.ActionPreloader"/>
     <preloadingActivity implementation="com.intellij.ide.ui.search.SearchableOptionPreloader"/>
-    <preloadingActivity implementation="com.intellij.featureStatistics.fusCollectors.UsageTriggerCollectionActivity"/>
 
     <writingAccessProvider implementation="com.intellij.openapi.fileEditor.impl.NonProjectFileWritingAccessProvider" order="first"/>