[SPARK-52472] Regenerate Spark Connect-generated Swift source code with protoc-gen-grpc-swift-2

### What changes were proposed in this pull request?

This PR aims to regenerate `Spark Connect`-generated Swift source code with `protoc-gen-grpc-swift-2`.

- https://formulae.brew.sh/formula/protoc-gen-grpc-swift
  - https://github.com/grpc/grpc-swift-protobuf/releases/tag/2.0.0

```bash
$ which protoc-gen-grpc-swift-2
/opt/homebrew/bin/protoc-gen-grpc-swift-2
```

### Why are the changes needed?

These files are manually generated from [v4.0.0](https://github.com/apache/spark/releases/tag/v4.0.0) tag by the following standard procedures.
```
$ git clone -b v4.0.0 https://github.com/apache/spark.git
$ cd spark/sql/connect/common/src/main/protobuf/
$ protoc --swift_out=. spark/connect/*.proto
$ protoc --grpc-swift_out=. spark/connect/*.proto

// Remove empty GRPC files
$ git grep 'This file contained no services'
spark/connect/catalog.grpc.swift:// This file contained no services.
spark/connect/commands.grpc.swift:// This file contained no services.
spark/connect/common.grpc.swift:// This file contained no services.
spark/connect/example_plugins.grpc.swift:// This file contained no services.
spark/connect/expressions.grpc.swift:// This file contained no services.
spark/connect/ml.grpc.swift:// This file contained no services.
spark/connect/ml_common.grpc.swift:// This file contained no services.
spark/connect/relations.grpc.swift:// This file contained no services.
spark/connect/types.grpc.swift:// This file contained no services.
```

### Does this PR introduce _any_ user-facing change?

No.

### How was this patch tested?

Pass the CIs.

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #198 from dongjoon-hyun/SPARK-52472.

Authored-by: Dongjoon Hyun <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>

Author: dongjoon-hyun

Sources/SparkConnect/base.grpc.swift

@@ -31,6 +31,7 @@ import SwiftProtobuf
 // MARK: - spark.connect.SparkConnectService
 
 /// Namespace containing generated types for the "spark.connect.SparkConnectService" service.
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
 internal enum Spark_Connect_SparkConnectService {
     /// Service descriptor for the "spark.connect.SparkConnectService" service.
     internal static let descriptor = GRPCCore.ServiceDescriptor(fullyQualifiedService: "spark.connect.SparkConnectService")
@@ -172,13 +173,15 @@ internal enum Spark_Connect_SparkConnectService {
     }
 }
 
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
 extension GRPCCore.ServiceDescriptor {
     /// Service descriptor for the "spark.connect.SparkConnectService" service.
     internal static let spark_connect_SparkConnectService = GRPCCore.ServiceDescriptor(fullyQualifiedService: "spark.connect.SparkConnectService")
 }
 
 // MARK: spark.connect.SparkConnectService (server)
 
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
 extension Spark_Connect_SparkConnectService {
     /// Streaming variant of the service protocol for the "spark.connect.SparkConnectService" service.
     ///
@@ -800,6 +803,7 @@ extension Spark_Connect_SparkConnectService {
 }
 
 // Default implementation of 'registerMethods(with:)'.
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
 extension Spark_Connect_SparkConnectService.StreamingServiceProtocol {
     internal func registerMethods<Transport>(with router: inout GRPCCore.RPCRouter<Transport>) where Transport: GRPCCore.ServerTransport {
         router.registerHandler(
@@ -916,6 +920,7 @@ extension Spark_Connect_SparkConnectService.StreamingServiceProtocol {
 }
 
 // Default implementation of streaming methods from 'StreamingServiceProtocol'.
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
 extension Spark_Connect_SparkConnectService.ServiceProtocol {
     internal func executePlan(
         request: GRPCCore.StreamingServerRequest<Spark_Connect_ExecutePlanRequest>,
@@ -1029,6 +1034,7 @@ extension Spark_Connect_SparkConnectService.ServiceProtocol {
 }
 
 // Default implementation of methods from 'ServiceProtocol'.
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
 extension Spark_Connect_SparkConnectService.SimpleServiceProtocol {
     internal func executePlan(
         request: GRPCCore.ServerRequest<Spark_Connect_ExecutePlanRequest>,
@@ -1171,6 +1177,7 @@ extension Spark_Connect_SparkConnectService.SimpleServiceProtocol {
 
 // MARK: spark.connect.SparkConnectService (client)
 
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
 extension Spark_Connect_SparkConnectService {
     /// Generated client protocol for the "spark.connect.SparkConnectService" service.
     ///
@@ -1795,6 +1802,7 @@ extension Spark_Connect_SparkConnectService {
 }
 
 // Helpers providing default arguments to 'ClientProtocol' methods.
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
 extension Spark_Connect_SparkConnectService.ClientProtocol {
     /// Call the "ExecutePlan" method.
     ///
@@ -2096,6 +2104,7 @@ extension Spark_Connect_SparkConnectService.ClientProtocol {
 }
 
 // Helpers providing sugared APIs for 'ClientProtocol' methods.
+@available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
 extension Spark_Connect_SparkConnectService.ClientProtocol {
     /// Call the "ExecutePlan" method.
     ///

Sources/SparkConnect/base.pb.swift

@@ -3123,15 +3123,11 @@ extension Spark_Connect_AnalyzePlanRequest: SwiftProtobuf.Message, SwiftProtobuf
     var _clientType: String? = nil
     var _analyze: Spark_Connect_AnalyzePlanRequest.OneOf_Analyze?
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -3751,15 +3747,11 @@ extension Spark_Connect_AnalyzePlanRequest.SameSemantics: SwiftProtobuf.Message,
     var _targetPlan: Spark_Connect_Plan? = nil
     var _otherPlan: Spark_Connect_Plan? = nil
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -4766,15 +4758,11 @@ extension Spark_Connect_ExecutePlanRequest: SwiftProtobuf.Message, SwiftProtobuf
     var _requestOptions: [Spark_Connect_ExecutePlanRequest.RequestOption] = []
     var _tags: [String] = []
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 

Sources/SparkConnect/commands.pb.swift

@@ -2684,15 +2684,11 @@ extension Spark_Connect_WriteStreamOperationStart: SwiftProtobuf.Message, SwiftP
     var _foreachBatch: Spark_Connect_StreamingForeachFunction? = nil
     var _clusteringColumnNames: [String] = []
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 

Sources/SparkConnect/expressions.pb.swift

@@ -1887,15 +1887,11 @@ extension Spark_Connect_Expression: SwiftProtobuf.Message, SwiftProtobuf._Messag
     var _common: Spark_Connect_ExpressionCommon? = nil
     var _exprType: Spark_Connect_Expression.OneOf_ExprType?
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -2334,15 +2330,11 @@ extension Spark_Connect_Expression.Window: SwiftProtobuf.Message, SwiftProtobuf.
     var _orderSpec: [Spark_Connect_Expression.SortOrder] = []
     var _frameSpec: Spark_Connect_Expression.Window.WindowFrame? = nil
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -2432,15 +2424,11 @@ extension Spark_Connect_Expression.Window.WindowFrame: SwiftProtobuf.Message, Sw
     var _lower: Spark_Connect_Expression.Window.WindowFrame.FrameBoundary? = nil
     var _upper: Spark_Connect_Expression.Window.WindowFrame.FrameBoundary? = nil
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -2530,15 +2518,11 @@ extension Spark_Connect_Expression.Window.WindowFrame.FrameBoundary: SwiftProtob
   fileprivate class _StorageClass {
     var _boundary: Spark_Connect_Expression.Window.WindowFrame.FrameBoundary.OneOf_Boundary?
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -2650,15 +2634,11 @@ extension Spark_Connect_Expression.SortOrder: SwiftProtobuf.Message, SwiftProtob
     var _direction: Spark_Connect_Expression.SortOrder.SortDirection = .unspecified
     var _nullOrdering: Spark_Connect_Expression.SortOrder.NullOrdering = .sortNullsUnspecified
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -2759,15 +2739,11 @@ extension Spark_Connect_Expression.Cast: SwiftProtobuf.Message, SwiftProtobuf._M
     var _castToType: Spark_Connect_Expression.Cast.OneOf_CastToType?
     var _evalMode: Spark_Connect_Expression.Cast.EvalMode = .unspecified
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -3824,15 +3800,11 @@ extension Spark_Connect_Expression.UnresolvedExtractValue: SwiftProtobuf.Message
     var _child: Spark_Connect_Expression? = nil
     var _extraction: Spark_Connect_Expression? = nil
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -3910,15 +3882,11 @@ extension Spark_Connect_Expression.UpdateFields: SwiftProtobuf.Message, SwiftPro
     var _fieldName: String = String()
     var _valueExpression: Spark_Connect_Expression? = nil
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -4002,15 +3970,11 @@ extension Spark_Connect_Expression.Alias: SwiftProtobuf.Message, SwiftProtobuf._
     var _name: [String] = []
     var _metadata: String? = nil
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -4092,15 +4056,11 @@ extension Spark_Connect_Expression.LambdaFunction: SwiftProtobuf.Message, SwiftP
     var _function: Spark_Connect_Expression? = nil
     var _arguments: [Spark_Connect_Expression.UnresolvedNamedLambdaVariable] = []
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -4598,15 +4558,11 @@ extension Spark_Connect_NamedArgumentExpression: SwiftProtobuf.Message, SwiftPro
     var _key: String = String()
     var _value: Spark_Connect_Expression? = nil
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}
 
@@ -4684,15 +4640,11 @@ extension Spark_Connect_MergeAction: SwiftProtobuf.Message, SwiftProtobuf._Messa
     var _condition: Spark_Connect_Expression? = nil
     var _assignments: [Spark_Connect_MergeAction.Assignment] = []
 
-    #if swift(>=5.10)
       // This property is used as the initial default value for new instances of the type.
       // The type itself is protecting the reference to its storage via CoW semantics.
       // This will force a copy to be made of this reference when the first mutation occurs;
       // hence, it is safe to mark this as `nonisolated(unsafe)`.
       static nonisolated(unsafe) let defaultInstance = _StorageClass()
-    #else
-      static let defaultInstance = _StorageClass()
-    #endif
 
     private init() {}