make use of PreloadingActivity+@preload to achieve cache warmup

Author: wangmingliang-ms

PluginsAndFeatures/azure-toolkit-for-intellij/azure-intellij-plugin-lib/src/main/java/com/microsoft/azure/toolkit/intellij/common/preload/AzurePreloadingActivity.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ */
+
+package com.microsoft.azure.toolkit.intellij.common.preload;
+
+import com.intellij.openapi.application.ApplicationManager;
+import com.intellij.openapi.application.PreloadingActivity;
+import com.intellij.openapi.progress.ProgressIndicator;
+import com.microsoft.azure.toolkit.lib.common.cache.Preloader;
+import lombok.extern.java.Log;
+
+@Log
+public class AzurePreloadingActivity extends PreloadingActivity {
+
+    @Override
+    public void preload(@org.jetbrains.annotations.NotNull final ProgressIndicator indicator) {
+        // Using progress manager as azure task manager is not initialized
+        ApplicationManager.getApplication().executeOnPooledThread(Preloader::load);
+    }
+}

PluginsAndFeatures/azure-toolkit-for-intellij/azure-intellij-plugin-lib/src/main/resources/META-INF/azure-intellij-plugin-lib.xml

@@ -2,6 +2,7 @@
     <extensionPoints>
     </extensionPoints>
     <extensions defaultExtensionNs="com.intellij">
+        <preloadingActivity implementation="com.microsoft.azure.toolkit.intellij.common.preload.AzurePreloadingActivity"/>
     </extensions>
     <actions>
     </actions>

PluginsAndFeatures/azure-toolkit-for-intellij/azure-sdk-reference-book/src/main/java/com/microsoft/azure/toolkit/intellij/azuresdk/referencebook/AzureSdkTreePanel.java

@@ -37,7 +37,6 @@
 import org.apache.commons.lang3.StringUtils;
 import org.jetbrains.annotations.NotNull;
 
-import javax.annotation.Nonnull;
 import javax.swing.*;
 import javax.swing.tree.DefaultMutableTreeNode;
 import javax.swing.tree.DefaultTreeModel;
@@ -96,7 +95,7 @@ private void filter(final String text) {
         this.loadData(this.services, filters);
     }
 
-    public void refresh(Boolean... force) {
+    public void refresh(boolean... force) {
         try {
             this.services = AzureSdkLibraryService.loadAzureSdkServices(force);
             this.filter.debounce();
@@ -175,7 +174,7 @@ public final void actionPerformed(@NotNull final AnActionEvent e) {
             this.loading = true;
             ActivityTracker.getInstance().inc();
             AzureTaskManager.getInstance().runLater(() -> {
-                AzureSdkTreePanel.this.reload();
+                AzureSdkTreePanel.this.refresh(true);
                 this.loading = false;
             });
         }

PluginsAndFeatures/azure-toolkit-for-intellij/azure-sdk-reference-book/src/main/java/com/microsoft/azure/toolkit/intellij/azuresdk/service/AzureSdkLibraryService.java

@@ -12,6 +12,7 @@
 import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
 import com.microsoft.azure.toolkit.intellij.azuresdk.model.AzureSdkServiceEntity;
 import com.microsoft.azure.toolkit.lib.common.cache.Cacheable;
+import com.microsoft.azure.toolkit.lib.common.cache.Preload;
 
 import java.io.IOException;
 import java.net.URL;
@@ -21,6 +22,7 @@ public class AzureSdkLibraryService {
     private static final ObjectMapper mapper = new YAMLMapper().configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
     private static final String SDK_METADATA_URL = "https://raw.githubusercontent.com/Azure/azure-sdk-for-java/master/sdk/spring/spring-reference.yml";
 
+    @Preload
     @Cacheable(value = "sdk-services", condition = "!(force&&force[0])")
     public static List<AzureSdkServiceEntity> loadAzureSdkServices(boolean... force) throws IOException {
         final URL destination = new URL(SDK_METADATA_URL);