NEST-362: Adding features guard configuration for Elasticsearch

Lombiq.Hosting.Tenants.FeaturesGuard/Extensions/OrchardCoreBuilderExtensions.cs

@@ -9,17 +9,24 @@ public static class OrchardCoreBuilderExtensions
     /// Binds Azure Storage as the conditional feature and Media as the condition feature to
     /// <see cref="ConditionallyEnabledFeaturesOptions"/>.
     /// </summary>
-    public static OrchardCoreBuilder ConfigureFeaturesGuardForAzureStorage(this OrchardCoreBuilder builder)
-    {
-        builder.ConfigureServices((tenantServices, _) =>
-            tenantServices.PostConfigure<ConditionallyEnabledFeaturesOptions>(options =>
-                options.EnableFeatureIfOtherFeatureIsEnabled = new Dictionary<string, IEnumerable<string>>
-                {
-                    ["OrchardCore.Media.Azure.Storage"] = new List<string> { "OrchardCore.Media" },
-                }));
+    public static OrchardCoreBuilder ConfigureFeaturesGuardForAzureStorage(this OrchardCoreBuilder builder) =>
+        builder.ConfigureFeaturesGuardWithoutOverriding(
+            new Dictionary<string, IEnumerable<string>>
+            {
+                ["OrchardCore.Media.Azure.Storage"] = new List<string> { "OrchardCore.Media" },
+            });
 
-        return builder;
-    }
+    /// <summary>
+    /// Binds Elasticsearch as the conditional feature and Search or Indexing as the condition feature to
+    /// <see cref="ConditionallyEnabledFeaturesOptions"/>.
+    /// </summary>
+    public static OrchardCoreBuilder ConfigureFeaturesGuardForElasticsearch(this OrchardCoreBuilder builder) =>
+        builder.ConfigureFeaturesGuardWithoutOverriding(
+            new Dictionary<string, IEnumerable<string>>
+            {
+                ["OrchardCore.Search.Elasticsearch"] =
+                    new List<string> { "OrchardCore.Search", "OrchardCore.Indexing" },
+            });
 
     /// <summary>
     /// Binds the provided dictionary's keys and values as the conditional and condition features to
@@ -34,4 +41,25 @@ public static OrchardCoreBuilder ConfigureFeaturesGuard(
 
         return builder;
     }
+
+    public static OrchardCoreBuilder ConfigureFeaturesGuardWithoutOverriding(
+        this OrchardCoreBuilder builder,
+        IDictionary<string, IEnumerable<string>> configDictionary)
+    {
+        builder.ConfigureServices((tenantServices, _) =>
+            tenantServices.PostConfigure<ConditionallyEnabledFeaturesOptions>(options =>
+            {
+                if (options.EnableFeatureIfOtherFeatureIsEnabled == null)
+                {
+                    options.EnableFeatureIfOtherFeatureIsEnabled = configDictionary;
+                }
+                else
+                {
+                    options.EnableFeatureIfOtherFeatureIsEnabled
+                        .AddRange(configDictionary);
+                }
+            }));
+
+        return builder;
+    }
 }

Lombiq.Hosting.Tenants.FeaturesGuard/Readme.md

@@ -11,7 +11,7 @@ A module that makes it possible to conditionally enable and conditionally keep e
 ### Conditionally enabling features
 
 - To use this feature, enable it on both the Default and the user tenant.
-- Features that should be conditionally enabled, as well as the features whose status acts as the condition, can be specified either in _appsettings.json_ using `ConditionallyEnabledFeaturesOptions` or in `Program` via the `ConfigureFeaturesGuard()` extension method.
+- Features that should be conditionally enabled, as well as the features whose status acts as the condition, can be specified either in _appsettings.json_ using `ConditionallyEnabledFeaturesOptions` or in `Program` via the `ConfigureFeaturesGuard()` or `ConfigureFeaturesGuardWithoutOverriding()` extension method.
 Conditionally enabled features need to be provided with a singular or multiple condition features, where the status of the condition features determines whether the corresponding conditional feature is enabled or disabled. Example configuration:
 
 `Program` config example:
@@ -27,7 +27,8 @@ builder.Services
             }));
 ```
 
-- `ConfigureFeaturesGuardForAzureStorage()` is also available to add `Azure Storage` as a conditional feature and `Media` as its condition feature.
+- `ConfigureFeaturesGuardForAzureStorage()` is available to add `Azure Storage` as a conditional feature and `Media` as its condition feature.
+- `ConfigureFeaturesGuardForElasticsearch()` is available to add `Elasticsearch` as a conditional feature and `Indexing` or `Search` as its condition feature.
 
 _appsettings.json_ config example:
 ```json