Update @azure/identity package to version 4.1.0 (#60)

support feature flags

Author: Eskibear

examples/package.json

@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "@azure/app-configuration-provider": "latest",
-    "@azure/identity": "^4.0.0",
+    "@azure/identity": "^4.1.0",
     "dotenv": "^16.3.1"
   }
 }

package-lock.json

@@ -56,7 +56,7 @@
   },
   "dependencies": {
     "@azure/app-configuration": "^1.5.0",
-    "@azure/identity": "^4.0.0",
+    "@azure/identity": "^4.1.0",
     "@azure/keyvault-secrets": "^4.7.0"
   }
 }

package.json

@@ -85,8 +85,6 @@ export class AzureAppConfigurationImpl implements AzureAppConfiguration {
             this.#refreshTimer = new RefreshTimer(this.#refreshInterval);
         }
 
-        // TODO: should add more adapters to process different type of values
-        // feature flag, others
         this.#adapters.push(new AzureKeyVaultKeyValueAdapter(options?.keyVaultOptions));
         this.#adapters.push(new JsonKeyValueAdapter());
     }

src/AzureAppConfigurationImpl.ts

@@ -5,6 +5,7 @@ import { AppConfigurationClientOptions } from "@azure/app-configuration";
 import { KeyVaultOptions } from "./keyvault/KeyVaultOptions";
 import { RefreshOptions } from "./RefreshOptions";
 import { SettingSelector } from "./types";
+import { FeatureFlagOptions } from "./featureManagement/FeatureFlagOptions";
 
 export const MaxRetries = 2;
 export const MaxRetryDelayInMs = 60000;
@@ -36,8 +37,14 @@ export interface AzureAppConfigurationOptions {
      * Specifies options used to resolve Vey Vault references.
      */
     keyVaultOptions?: KeyVaultOptions;
+
     /**
      * Specifies options for dynamic refresh key-values.
      */
     refreshOptions?: RefreshOptions;
+
+    /**
+     * Specifies options used to configure feature flags.
+     */
+    featureFlagOptions?: FeatureFlagOptions;
 }

src/AzureAppConfigurationOptions.ts

@@ -0,0 +1,33 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+import { SettingSelector } from "../types";
+
+/**
+ * Options used to configure feature flags.
+ */
+export interface FeatureFlagOptions {
+    /**
+     * Specifies whether feature flag support is enabled.
+     */
+    enabled: boolean;
+
+    /**
+     * Specifies the selectors used to filter feature flags.
+     *
+     * @remarks
+     * keyFilter of selector will be prefixed with "appconfig.featureflag/" when request is sent.
+     * If no selectors are specified then no feature flags will be retrieved.
+     */
+    selectors?: SettingSelector[];
+
+    /**
+     * Specifies whether feature flag refresh is enabled.
+     */
+    refreshEnabled?: boolean;
+
+    /**
+     * Specifies the interval in milliseconds to refresh feature flags. Defaults to 10 seconds.
+     */
+    refreshIntervalInMs?: number;
+}