update FromExisting to always treat as expression

sdk/provisioning/Azure.Provisioning/src/ModuleConstruct.cs

@@ -147,7 +147,7 @@ private void WriteExistingResources(MemoryStream stream)
             {
                 stream.WriteLine();
                 stream.WriteLine($"resource {resource.Name} '{resource.Id.ResourceType}@{resource.Version}' existing = {{");
-                stream.WriteLine($"  name: '{resource.Id.Name}'");
+                stream.WriteLine($"  name: {resource.Id.Name}");
                 stream.WriteLine($"}}");
             }
         }

sdk/provisioning/Azure.Provisioning/src/appconfiguration/AppConfigurationStore.cs

@@ -15,6 +15,7 @@ namespace Azure.Provisioning.AppConfiguration
     public class AppConfigurationStore : Resource<AppConfigurationStoreData>
     {
         private const string ResourceTypeName = "Microsoft.AppConfiguration/configurationStores";
+        private static readonly Func<string, AppConfigurationStoreData> Empty = (name) => ArmAppConfigurationModelFactory.AppConfigurationStoreData();
 
         /// <summary>
         /// Initializes a new instance of the <see cref="AppConfigurationStore"/> class.
@@ -24,7 +25,7 @@ public class AppConfigurationStore : Resource<AppConfigurationStoreData>
         /// <param name="version">The version.</param>
         /// <param name="location">The location.</param>
         public AppConfigurationStore(IConstruct scope, string name = "store", string version = "2023-03-01", AzureLocation? location = default)
-            : base(scope, null, name, ResourceTypeName, version, (name) => ArmAppConfigurationModelFactory.AppConfigurationStoreData(
+            : this(scope, name, version, location, null, false, (name) => ArmAppConfigurationModelFactory.AppConfigurationStoreData(
                 name: name,
                 resourceType: ResourceTypeName,
                 location: location ?? Environment.GetEnvironmentVariable("AZURE_LOCATION") ?? AzureLocation.WestUS,
@@ -33,6 +34,21 @@ public AppConfigurationStore(IConstruct scope, string name = "store", string ver
             AddOutput(store => store.Endpoint, $"{Name}_endpoint");
         }
 
+        private AppConfigurationStore(IConstruct scope, string name = "store", string version = "2023-03-01", AzureLocation? location = default, ResourceGroup? parent = null, bool isExisting = false, Func<string, AppConfigurationStoreData>? creator = null)
+            : base(scope, null, name, ResourceTypeName, version, creator ?? Empty, isExisting)
+        {
+        }
+
+        /// <summary>
+        /// Creates a new instance of the <see cref="AppConfigurationStore"/> class referencing an existing instance.
+        /// </summary>
+        /// <param name="scope">The scope.</param>
+        /// <param name="name">The resource name.</param>
+        /// <param name="parent">The resource group.</param>
+        /// <returns>The KeyVault instance.</returns>
+        public static AppConfigurationStore FromExisting(IConstruct scope, string name, ResourceGroup? parent = null)
+            => new AppConfigurationStore(scope, name, parent: parent, isExisting: true);
+
         /// <inheritdoc/>
         protected override Resource? FindParentInScope(IConstruct scope)
         {

sdk/provisioning/Azure.Provisioning/src/keyvault/KeyVault.cs

@@ -16,9 +16,10 @@ namespace Azure.Provisioning.KeyVaults
     public class KeyVault : Resource<KeyVaultData>
     {
         private const string ResourceTypeName = "Microsoft.KeyVault/vaults";
+        private static readonly Func<string, KeyVaultData> Empty = (name) => ArmKeyVaultModelFactory.KeyVaultData();
 
         /// <summary>
-        /// Creates a new instance of the <see cref="KeyVault"/> class referencing an existing KeyVault.
+        /// Creates a new instance of the <see cref="KeyVault"/> class referencing an existing instance.
         /// </summary>
         /// <param name="scope">The scope.</param>
         /// <param name="name">The resource name.</param>
@@ -36,12 +37,7 @@ public static KeyVault FromExisting(IConstruct scope, string name, ResourceGroup
         /// <param name="location">The location.</param>
         /// <param name="parent"></param>
         public KeyVault(IConstruct scope, ResourceGroup? parent = default, string name = "kv", string version = "2023-02-01", AzureLocation? location = default)
-            : this(scope, parent, name, version, location, false)
-        {
-        }
-
-        private KeyVault(IConstruct scope, ResourceGroup? parent = default, string name = "kv", string version = "2023-02-01", AzureLocation? location = default, bool isExisting = false)
-            : base(scope, parent, name, ResourceTypeName, version, (name) => ArmKeyVaultModelFactory.KeyVaultData(
+            : this(scope, parent, name, version, location, false, (name) => ArmKeyVaultModelFactory.KeyVaultData(
                 name: name,
                 resourceType: ResourceTypeName,
                 location: location ?? Environment.GetEnvironmentVariable("AZURE_LOCATION") ?? AzureLocation.WestUS,
@@ -58,20 +54,21 @@ private KeyVault(IConstruct scope, ResourceGroup? parent = default, string name
                             }
                         })
                     } : default,
-                    enableRbacAuthorization: true)),
-                isExisting: isExisting)
+                    enableRbacAuthorization: true)))
         {
-            if (!isExisting)
-            {
-                AssignProperty(data => data.Name, GetAzureName(scope, name));
+            AssignProperty(data => data.Name, GetAzureName(scope, name));
 
-                if (scope.Root.Properties.TenantId == Guid.Empty)
-                {
-                    AssignProperty(kv => kv.Properties.TenantId, Tenant.TenantIdExpression);
-                }
+            if (scope.Root.Properties.TenantId == Guid.Empty)
+            {
+                AssignProperty(kv => kv.Properties.TenantId, Tenant.TenantIdExpression);
             }
         }
 
+        private KeyVault(IConstruct scope, ResourceGroup? parent = default, string name = "kv", string version = "2023-02-01", AzureLocation? location = default, bool isExisting = false, Func<string, KeyVaultData>? creator = null)
+            : base(scope, parent, name, ResourceTypeName, version, creator ?? Empty, isExisting: isExisting)
+        {
+        }
+
         /// <summary>
         /// Adds an access policy to the <see cref="KeyVault"/>.
         /// </summary>

sdk/provisioning/Azure.Provisioning/src/keyvault/KeyVaultSecret.cs

@@ -2,7 +2,6 @@
 // Licensed under the MIT License.
 
 using System;
-using Azure.Provisioning.Sql;
 using Azure.ResourceManager.KeyVault;
 using Azure.ResourceManager.KeyVault.Models;
 
@@ -14,6 +13,7 @@ namespace Azure.Provisioning.KeyVaults
     public class KeyVaultSecret : Resource<KeyVaultSecretData>
     {
         private const string ResourceTypeName = "Microsoft.KeyVault/vaults/secrets";
+        private static readonly Func<string, KeyVaultSecretData> Empty = (name) => ArmKeyVaultModelFactory.KeyVaultSecretData();
 
         /// <summary>
         /// Initializes a new instance of the <see cref="KeyVaultSecret"/>.
@@ -23,7 +23,7 @@ public class KeyVaultSecret : Resource<KeyVaultSecretData>
         /// <param name="name">The name.</param>
         /// <param name="version">The version.</param>
         public KeyVaultSecret(IConstruct scope, KeyVault? parent = null, string name = "kvs", string version = "2023-02-01")
-            : base(scope, parent, name, ResourceTypeName, version, (name) => ArmKeyVaultModelFactory.KeyVaultSecretData(
+            : this(scope, parent, name, version, false, (name) => ArmKeyVaultModelFactory.KeyVaultSecretData(
                 name: name,
                 resourceType: ResourceTypeName,
                 properties: ArmKeyVaultModelFactory.SecretProperties(
@@ -32,6 +32,11 @@ public KeyVaultSecret(IConstruct scope, KeyVault? parent = null, string name = "
         {
         }
 
+        private KeyVaultSecret(IConstruct scope, KeyVault? parent = null, string name = "kvs", string version = "2023-02-01", bool isExisting = false, Func<string, KeyVaultSecretData>? createProperties = null)
+            : base(scope, parent, name, ResourceTypeName, version, createProperties ?? Empty, isExisting)
+        {
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="KeyVaultSecret"/>.
         /// </summary>
@@ -41,7 +46,7 @@ public KeyVaultSecret(IConstruct scope, KeyVault? parent = null, string name = "
         /// <param name="connectionString">The connection string.</param>
         /// <param name="version">The version.</param>
         public KeyVaultSecret(IConstruct scope, string name, ConnectionString connectionString, KeyVault? parent = null, string version = "2023-02-01")
-            : base(scope, parent, name, ResourceTypeName, version, (name) => ArmKeyVaultModelFactory.KeyVaultSecretData(
+            : this(scope, parent, name, version, false, (name) => ArmKeyVaultModelFactory.KeyVaultSecretData(
                 name: name,
                 resourceType: ResourceTypeName,
                 properties: ArmKeyVaultModelFactory.SecretProperties(
@@ -50,6 +55,16 @@ public KeyVaultSecret(IConstruct scope, string name, ConnectionString connection
         {
         }
 
+        /// <summary>
+        /// Creates a new instance of the <see cref="KeyVaultSecret"/> class referencing an existing instance.
+        /// </summary>
+        /// <param name="scope">The scope.</param>
+        /// <param name="name">The resource name.</param>
+        /// <param name="parent">The resource group.</param>
+        /// <returns>The KeyVault instance.</returns>
+        public static KeyVaultSecret FromExisting(IConstruct scope, string name, KeyVault? parent = null)
+            => new KeyVaultSecret(scope, parent, name, isExisting: true);
+
         /// <inheritdoc/>
         protected override Resource? FindParentInScope(IConstruct scope)
         {

sdk/provisioning/Azure.Provisioning/src/postgresql/PostgreSqlFlexibleServer.cs

@@ -5,11 +5,8 @@
 using Azure.Core;
 using Azure.Provisioning.Redis;
 using Azure.Provisioning.ResourceManager;
-using Azure.ResourceManager.PostgreSql;
 using Azure.ResourceManager.PostgreSql.FlexibleServers;
 using Azure.ResourceManager.PostgreSql.FlexibleServers.Models;
-using Azure.ResourceManager.PostgreSql.Models;
-using Azure.ResourceManager.Redis.Models;
 
 namespace Azure.Provisioning.PostgreSql
 {
@@ -19,6 +16,7 @@ namespace Azure.Provisioning.PostgreSql
     public class PostgreSqlFlexibleServer : Resource<PostgreSqlFlexibleServerData>
     {
         private const string ResourceTypeName = "Microsoft.DBforPostgreSQL/flexibleServers";
+        private static readonly Func<string, PostgreSqlFlexibleServerData> Empty = (name) => ArmPostgreSqlFlexibleServersModelFactory.PostgreSqlFlexibleServerData();
 
         /// <summary>
         /// Creates a new instance of the <see cref="PostgreSqlFlexibleServer"/> class.
@@ -50,7 +48,7 @@ public PostgreSqlFlexibleServer(
             string name = "postgres",
             string version = "2020-06-01",
             AzureLocation? location = default)
-            : base(scope, parent, name, ResourceTypeName, version, (name) => ArmPostgreSqlFlexibleServersModelFactory.PostgreSqlFlexibleServerData(
+        : this(scope, administratorLogin, administratorPassword, sku, highAvailability, storage, backup, network, availabilityZone, parent, name, version, location, false, (name) => ArmPostgreSqlFlexibleServersModelFactory.PostgreSqlFlexibleServerData(
                 name: name,
                 sku: sku,
                 // create new instances so the properties can be overriden by user if needed
@@ -66,6 +64,26 @@ public PostgreSqlFlexibleServer(
             AssignProperty(data => data.AdministratorLoginPassword, administratorPassword);
         }
 
+        private PostgreSqlFlexibleServer(
+            IConstruct scope,
+            Parameter administratorLogin = default,
+            Parameter administratorPassword = default,
+            PostgreSqlFlexibleServerSku? sku = default,
+            PostgreSqlFlexibleServerHighAvailability? highAvailability = default,
+            PostgreSqlFlexibleServerStorage? storage = default,
+            PostgreSqlFlexibleServerBackupProperties? backup = default,
+            PostgreSqlFlexibleServerNetwork? network = default,
+            string? availabilityZone = default,
+            ResourceGroup? parent = default,
+            string name = "postgres",
+            string version = "2020-06-01",
+            AzureLocation? location = default,
+            bool isExisting = false,
+            Func<string, PostgreSqlFlexibleServerData>? creator = null)
+            : base(scope, parent, name, ResourceTypeName, version, creator ?? Empty, isExisting)
+        {
+        }
+
         /// <inheritdoc/>
         protected override Resource? FindParentInScope(IConstruct scope)
         {
@@ -77,6 +95,16 @@ public PostgreSqlFlexibleServer(
             return result;
         }
 
+        /// <summary>
+        /// Creates a new instance of the <see cref="PostgreSqlFlexibleServer"/> class referencing an existing instance.
+        /// </summary>
+        /// <param name="scope">The scope.</param>
+        /// <param name="name">The resource name.</param>
+        /// <param name="parent">The resource group.</param>
+        /// <returns>The KeyVault instance.</returns>
+        public static PostgreSqlFlexibleServer FromExisting(IConstruct scope, string name, ResourceGroup? parent = null)
+            => new PostgreSqlFlexibleServer(scope, parent: parent, name: name, isExisting: true);
+
         /// <summary>
         /// Gets the connection string for the <see cref="RedisCache"/>.
         /// </summary>

sdk/provisioning/Azure.Provisioning/src/redis/RedisCache.cs

@@ -15,6 +15,7 @@ namespace Azure.Provisioning.Redis
     public class RedisCache : Resource<RedisData>
     {
         private const string ResourceTypeName = "Microsoft.Cache/Redis";
+        private static readonly Func<string, RedisData> Empty = (name) => ArmRedisModelFactory.RedisData(updateChannel: null);
 
         /// <summary>
         /// Creates a new instance of the <see cref="RedisCache"/> class.
@@ -25,7 +26,7 @@ public class RedisCache : Resource<RedisData>
         /// <param name="name"></param>
         /// <param name="location"></param>
         public RedisCache(IConstruct scope, RedisSku? sku = default, ResourceGroup? parent = default, string name = "redis", AzureLocation? location = default)
-            : base(scope, parent, name, ResourceTypeName, "2020-06-01", (name) => ArmRedisModelFactory.RedisData(
+            : this(scope, sku, parent, name, location, false, (name) => ArmRedisModelFactory.RedisData(
                 name: name,
                 location: location ?? Environment.GetEnvironmentVariable("AZURE_LOCATION") ?? AzureLocation.WestUS,
                 enableNonSslPort: false,
@@ -37,6 +38,11 @@ public RedisCache(IConstruct scope, RedisSku? sku = default, ResourceGroup? pare
             AssignProperty(data => data.Name, GetAzureName(scope, name));
         }
 
+        private RedisCache(IConstruct scope, RedisSku? sku = default, ResourceGroup? parent = default, string name = "redis", AzureLocation? location = default, bool isExisting = false, Func<string, RedisData>? creator = null)
+            : base(scope, parent, name, ResourceTypeName, "2020-06-01", creator ?? Empty, isExisting)
+        {
+        }
+
         /// <summary>
         /// Gets the connection string for the <see cref="RedisCache"/>.
         /// </summary>
@@ -54,6 +60,16 @@ public RedisCacheConnectionString GetConnectionString(bool useSecondary = false)
             return result;
         }
 
+        /// <summary>
+        /// Creates a new instance of the <see cref="RedisCache"/> class referencing an existing instance.
+        /// </summary>
+        /// <param name="scope">The scope.</param>
+        /// <param name="name">The resource name.</param>
+        /// <param name="parent">The resource group.</param>
+        /// <returns>The KeyVault instance.</returns>
+        public static RedisCache FromExisting(IConstruct scope, string name, ResourceGroup? parent = null)
+            => new RedisCache(scope, parent: parent, name: name, isExisting: true);
+
         /// <inheritdoc/>
         protected override string GetAzureName(IConstruct scope, string resourceName) => GetGloballyUniqueName(resourceName);
     }

sdk/provisioning/Azure.Provisioning/src/resources/DeploymentScript.cs

@@ -16,6 +16,7 @@ public class DeploymentScript : Resource<AzureCliScript>
     {
         private const string ResourceTypeName = "Microsoft.Resources/deploymentScripts";
         private const string _defaultVersion = "2020-10-01";
+        private static readonly Func<string, AzureCliScript> Empty = (name) => ArmResourcesModelFactory.AzureCliScript();
 
         /// <summary>
         /// Initializes a new instance of the <see cref="DeploymentScript"/>.
@@ -36,7 +37,8 @@ public DeploymentScript(IConstruct scope, string resourceName, IEnumerable<Scrip
                 timeout: TimeSpan.FromMinutes(5),
                 cleanupPreference: ScriptCleanupOptions.OnSuccess,
                 environmentVariables: scriptEnvironmentVariables,
-                scriptContent: scriptContent))
+                scriptContent: scriptContent),
+                  false)
         {
         }
 
@@ -83,13 +85,29 @@ alter role db_owner add member ${APPUSERNAME}
                         SCRIPT_END
 
                         ./sqlcmd -S ${DBSERVER} -d ${DBNAME} -U ${SQLADMIN} -i ./initDb.sql
-                        """))
+                        """),
+                  false)
         {
             AssignProperty(data => data.EnvironmentVariables[0].SecureValue, appUserPasswordSecret);
             AssignProperty(data => data.EnvironmentVariables[1].SecureValue, sqlAdminPasswordSecret);
             AssignProperty(data => data.EnvironmentVariables[2].Value, databaseServerName);
         }
 
+        /// <summary>
+        /// Creates a new instance of the <see cref="DeploymentScript"/> class referencing an existing instance.
+        /// </summary>
+        /// <param name="scope">The scope.</param>
+        /// <param name="name">The resource name.</param>
+        /// <param name="parent">The resource group.</param>
+        /// <returns>The KeyVault instance.</returns>
+        public static DeploymentScript FromExisting(IConstruct scope, string name, ResourceGroup? parent = null)
+            => new DeploymentScript(scope, parent: parent, name: name, isExisting: true);
+
+        private DeploymentScript(IConstruct scope, string name, ResourceGroup? parent = null, bool isExisting = false)
+            : base(scope, parent, name, ResourceTypeName, _defaultVersion, Empty, isExisting)
+        {
+        }
+
         /// <inheritdoc/>
         protected override Resource? FindParentInScope(IConstruct scope)
         {