Move to grpc-swift-2 (grpc#70)

Motivation:

To support incremental migration, v2 has moved to the 'grpc-swift-2'
package.

Modifications:

- Update dependencies
- Update generated code
- Re-baseline availability
- Rename 'protoc-gen-grpc-swift' to 'protoc-gen-grpc-swift-2'

Result:

Easier to migrate from gRPC Swift 1 to 2

Author: glbrntt

IntegrationTests/PluginTests/Resources/Sources/Package.swift

@@ -29,16 +29,16 @@ let package = Package(
   dependencies: [
     // Dependency on grpc-swift-protobuf to be added by setup-plugin-tests.sh script
     .package(
-      url: "https://github.com/grpc/grpc-swift.git",
+      url: "https://github.com/grpc/grpc-swift-2.git",
       from: "2.0.0"
     )
   ],
   targets: [
     .executableTarget(
       name: "grpc-adopter",
       dependencies: [
-        .product(name: "GRPCCore", package: "grpc-swift"),
-        .product(name: "GRPCInProcessTransport", package: "grpc-swift"),
+        .product(name: "GRPCCore", package: "grpc-swift-2"),
+        .product(name: "GRPCInProcessTransport", package: "grpc-swift-2"),
         .product(name: "GRPCProtobuf", package: "grpc-swift-protobuf"),
       ],
       plugins: [

Package.swift

@@ -23,8 +23,8 @@ let products: [Product] = [
     targets: ["GRPCProtobuf"]
   ),
   .executable(
-    name: "protoc-gen-grpc-swift",
-    targets: ["protoc-gen-grpc-swift"]
+    name: "protoc-gen-grpc-swift-2",
+    targets: ["protoc-gen-grpc-swift-2"]
   ),
   .plugin(
     name: "GRPCProtobufGenerator",
@@ -38,8 +38,8 @@ let products: [Product] = [
 
 let dependencies: [Package.Dependency] = [
   .package(
-    url: "https://github.com/grpc/grpc-swift.git",
-    from: "2.2.1"
+    url: "https://github.com/grpc/grpc-swift-2.git",
+    from: "2.0.0"
   ),
   .package(
     url: "https://github.com/apple/swift-protobuf.git",
@@ -49,12 +49,12 @@ let dependencies: [Package.Dependency] = [
 
 // -------------------------------------------------------------------------------------------------
 
-// This adds some build settings which allow us to map "@available(gRPCSwiftProtobuf 1.x, *)" to
+// This adds some build settings which allow us to map "@available(gRPCSwiftProtobuf 2.x, *)" to
 // the appropriate OS platforms.
-let nextMinorVersion = 3
+let nextMinorVersion = 1
 let availabilitySettings: [SwiftSetting] = (0 ... nextMinorVersion).map { minor in
   let name = "gRPCSwiftProtobuf"
-  let version = "1.\(minor)"
+  let version = "2.\(minor)"
   let platforms = "macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0"
   let setting = "AvailabilityMacro=\(name) \(version):\(platforms)"
   return .enableExperimentalFeature(setting)
@@ -71,12 +71,12 @@ let defaultSwiftSettings: [SwiftSetting] =
 // -------------------------------------------------------------------------------------------------
 
 var targets: [Target] = [
-  // protoc plugin for grpc-swift
+  // protoc plugin for grpc-swift-2
   .executableTarget(
-    name: "protoc-gen-grpc-swift",
+    name: "protoc-gen-grpc-swift-2",
     dependencies: [
       .target(name: "GRPCProtobufCodeGen"),
-      .product(name: "GRPCCodeGen", package: "grpc-swift"),
+      .product(name: "GRPCCodeGen", package: "grpc-swift-2"),
       .product(name: "SwiftProtobuf", package: "swift-protobuf"),
       .product(name: "SwiftProtobufPluginLibrary", package: "swift-protobuf"),
     ],
@@ -87,7 +87,7 @@ var targets: [Target] = [
   .target(
     name: "GRPCProtobuf",
     dependencies: [
-      .product(name: "GRPCCore", package: "grpc-swift"),
+      .product(name: "GRPCCore", package: "grpc-swift-2"),
       .product(name: "SwiftProtobuf", package: "swift-protobuf"),
     ],
     swiftSettings: defaultSwiftSettings
@@ -96,18 +96,18 @@ var targets: [Target] = [
     name: "GRPCProtobufTests",
     dependencies: [
       .target(name: "GRPCProtobuf"),
-      .product(name: "GRPCCore", package: "grpc-swift"),
-      .product(name: "GRPCInProcessTransport", package: "grpc-swift"),
+      .product(name: "GRPCCore", package: "grpc-swift-2"),
+      .product(name: "GRPCInProcessTransport", package: "grpc-swift-2"),
       .product(name: "SwiftProtobuf", package: "swift-protobuf"),
     ],
     swiftSettings: defaultSwiftSettings
   ),
 
-  // Code generator library for protoc-gen-grpc-swift
+  // Code generator library for protoc-gen-grpc-swift-2
   .target(
     name: "GRPCProtobufCodeGen",
     dependencies: [
-      .product(name: "GRPCCodeGen", package: "grpc-swift"),
+      .product(name: "GRPCCodeGen", package: "grpc-swift-2"),
       .product(name: "SwiftProtobufPluginLibrary", package: "swift-protobuf"),
     ],
     swiftSettings: defaultSwiftSettings
@@ -116,7 +116,7 @@ var targets: [Target] = [
     name: "GRPCProtobufCodeGenTests",
     dependencies: [
       .target(name: "GRPCProtobufCodeGen"),
-      .product(name: "GRPCCodeGen", package: "grpc-swift"),
+      .product(name: "GRPCCodeGen", package: "grpc-swift-2"),
       .product(name: "SwiftProtobuf", package: "swift-protobuf"),
       .product(name: "SwiftProtobufPluginLibrary", package: "swift-protobuf"),
     ],
@@ -131,7 +131,7 @@ var targets: [Target] = [
     name: "GRPCProtobufGenerator",
     capability: .buildTool(),
     dependencies: [
-      .target(name: "protoc-gen-grpc-swift"),
+      .target(name: "protoc-gen-grpc-swift-2"),
       .product(name: "protoc-gen-swift", package: "swift-protobuf"),
     ]
   ),
@@ -152,7 +152,7 @@ var targets: [Target] = [
       ]
     ),
     dependencies: [
-      .target(name: "protoc-gen-grpc-swift"),
+      .target(name: "protoc-gen-grpc-swift-2"),
       .product(name: "protoc-gen-swift", package: "swift-protobuf"),
     ],
     path: "Plugins/GRPCProtobufGeneratorCommand"
@@ -196,7 +196,7 @@ if Context.buildCGRPCProtobuf {
   )
 
   for target in targets {
-    if target.name == "protoc-gen-grpc-swift" {
+    if target.name == "protoc-gen-grpc-swift-2" {
       target.dependencies.append(.target(name: "CGRPCProtobuf"))
     }
   }

Plugins/GRPCProtobufGenerator/Plugin.swift

@@ -70,7 +70,7 @@ struct GRPCProtobufGenerator {
   ) throws -> [Command] {
     let configs = try readConfigFiles(configFiles, pluginWorkDirectory: pluginWorkDirectory)
 
-    let protocGenGRPCSwiftPath = try tool("protoc-gen-grpc-swift").url
+    let protocGenGRPCSwiftPath = try tool("protoc-gen-grpc-swift-2").url
     let protocGenSwiftPath = try tool("protoc-gen-swift").url
 
     var commands: [Command] = []
@@ -165,16 +165,16 @@ extension [URL: GenerationConfig] {
   }
 }
 
-/// Construct the command to invoke `protoc` with the `protoc-gen-grpc-swift` plugin.
+/// Construct the command to invoke `protoc` with the `protoc-gen-grpc-swift-2` plugin.
 /// - Parameters:
 ///   - inputFile: The input `.proto` file.
 ///   - config: The config for this operation.
 ///   - baseDirectoryPath: The root path to the source `.proto` files used as the reference for relative path naming schemes.
 ///   - protoDirectoryPaths: The paths passed to `protoc` in which to look for imported proto files.
 ///   - protocPath: The path to `protoc`
-///   - protocGenGRPCSwiftPath: The path to `protoc-gen-grpc-swift`.
+///   - protocGenGRPCSwiftPath: The path to `protoc-gen-grpc-swift-2`.
 ///   - configFilePath: The path to the config file in use.
-/// - Returns: The command to invoke `protoc` with the `protoc-gen-grpc-swift` plugin.
+/// - Returns: The command to invoke `protoc` with the `protoc-gen-grpc-swift-2` plugin.
 func protocGenGRPCSwiftCommand(
   inputFile: URL,
   config: GenerationConfig,
@@ -222,7 +222,7 @@ func protocGenGRPCSwiftCommand(
 ///   - baseDirectoryPath: The root path to the source `.proto` files used as the reference for relative path naming schemes.
 ///   - protoDirectoryPaths: The paths passed to `protoc` in which to look for imported proto files.
 ///   - protocPath: The path to `protoc`
-///   - protocGenSwiftPath: The path to `protoc-gen-grpc-swift`.
+///   - protocGenSwiftPath: The path to `protoc-gen-grpc-swift-2`.
 ///   - configFilePath: The path to the config file in use.
 /// - Returns: The command to invoke `protoc` with the `protoc-gen-swift` plugin.
 func protocGenSwiftCommand(
@@ -266,7 +266,7 @@ func protocGenSwiftCommand(
 }
 
 /// Derive the expected output file path to match the behavior of the `protoc-gen-swift`
-/// and `protoc-gen-grpc-swift` `protoc` plugins using the `PathToUnderscores` naming scheme.
+/// and `protoc-gen-grpc-swift-2` `protoc` plugins using the `PathToUnderscores` naming scheme.
 ///
 /// This means the generated file for an input proto file called "foo/bar/baz.proto" will
 /// have the name "foo\_bar\_baz.proto".

Plugins/GRPCProtobufGeneratorCommand/Plugin.swift

@@ -99,7 +99,7 @@ struct GRPCProtobufGeneratorCommandPlugin {
 
     let config = commandConfig.common
     let protocPath = try deriveProtocPath(using: config, tool: tool)
-    let protocGenGRPCSwiftPath = try tool("protoc-gen-grpc-swift").url
+    let protocGenGRPCSwiftPath = try tool("protoc-gen-grpc-swift-2").url
     let protocGenSwiftPath = try tool("protoc-gen-swift").url
 
     let outputDirectory = URL(fileURLWithPath: config.outputPath)
@@ -111,7 +111,7 @@ struct GRPCProtobufGeneratorCommandPlugin {
 
     let inputFileURLs = inputFiles.map { URL(fileURLWithPath: $0) }
 
-    // MARK: protoc-gen-grpc-swift
+    // MARK: protoc-gen-grpc-swift-2
     if config.clients || config.servers {
       let arguments = constructProtocGenGRPCSwiftArguments(
         config: config,

Plugins/PluginsShared/PluginUtils.swift

@@ -73,15 +73,15 @@ func constructProtocGenSwiftArguments(
   return protocArgs
 }
 
-/// Construct the arguments to be passed to `protoc` when invoking the `protoc-gen-grpc-swift` `protoc` plugin.
+/// Construct the arguments to be passed to `protoc` when invoking the `protoc-gen-grpc-swift-2` `protoc` plugin.
 /// - Parameters:
 ///   - config: The config for this operation.
 ///   - fileNaming: The file naming scheme to be used.
 ///   - inputFiles: The input `.proto` files.
 ///   - protoDirectoryPaths: The directories in which `protoc` will look for imports.
-///   - protocGenGRPCSwiftPath: The path to the `protoc-gen-grpc-swift` `protoc` plugin.
+///   - protocGenGRPCSwiftPath: The path to the `protoc-gen-grpc-swift-2` `protoc` plugin.
 ///   - outputDirectory: The directory in which generated source files are created.
-/// - Returns: The constructed arguments to be passed to `protoc` when invoking the `protoc-gen-grpc-swift` `protoc` plugin.
+/// - Returns: The constructed arguments to be passed to `protoc` when invoking the `protoc-gen-grpc-swift-2` `protoc` plugin.
 func constructProtocGenGRPCSwiftArguments(
   config: GenerationConfig,
   fileNaming: GenerationConfig.FileNaming?,

README.md

@@ -14,5 +14,5 @@ for [gRPC Swift][gh-grpc-swift-protobuf].
 
 [gh-swift-protobuf]: https://github.com/apple/swift-protobuf
 [gh-grpc-swift-protobuf]: https://github.com/grpc/grpc-swift-protobuf
-[spi-grpc-swift]: https://swiftpackageindex.com/grpc/grpc-swift/documentation
+[spi-grpc-swift]: https://swiftpackageindex.com/grpc/grpc-swift-2/documentation
 [spi-grpc-swift-protobuf]: https://swiftpackageindex.com/grpc/grpc-swift-protobuf/documentation

Sources/GRPCProtobuf/Coding.swift

@@ -18,7 +18,7 @@ public import GRPCCore
 public import SwiftProtobuf
 
 /// Serializes a Protobuf message into a sequence of bytes.
-@available(gRPCSwiftProtobuf 1.0, *)
+@available(gRPCSwiftProtobuf 2.0, *)
 public struct ProtobufSerializer<Message: SwiftProtobuf.Message>: GRPCCore.MessageSerializer {
   public init() {}
 
@@ -42,7 +42,7 @@ public struct ProtobufSerializer<Message: SwiftProtobuf.Message>: GRPCCore.Messa
 }
 
 /// Deserializes a sequence of bytes into a Protobuf message.
-@available(gRPCSwiftProtobuf 1.0, *)
+@available(gRPCSwiftProtobuf 2.0, *)
 public struct ProtobufDeserializer<Message: SwiftProtobuf.Message>: GRPCCore.MessageDeserializer {
   public init() {}
 

Sources/GRPCProtobuf/ContiguousBytesAdapter.swift

@@ -24,7 +24,7 @@ public import SwiftProtobuf  // internal but @usableFromInline
 /// it'd require a dependency on Protobuf in the core package), and `GRPCContiguousBytes` can't
 /// refine `SwiftProtobufContiguousBytes` for the same reason.
 @usableFromInline
-@available(gRPCSwiftProtobuf 1.0, *)
+@available(gRPCSwiftProtobuf 2.0, *)
 struct ContiguousBytesAdapter<
   Bytes: GRPCContiguousBytes
 >: GRPCContiguousBytes, SwiftProtobufContiguousBytes {

Sources/GRPCProtobuf/Documentation.docc/Articles/API-stability-of-generated-code.md

@@ -9,7 +9,7 @@ The API of the generated code depends on three factors:
 
 - The contents of the source `.proto` file.
 - The options you use when generating the code.
-- The code generator (the `protoc-gen-grpc-swift` plugin for `protoc`).
+- The code generator (the `protoc-gen-grpc-swift-2` plugin for `protoc`).
 
 While this document applies specifically to the gRPC code generated and *not*
 code for messages used as inputs and outputs of each method, the concepts still
@@ -73,6 +73,6 @@ option.
 
 As gRPC Swift is developed the generated code may need to rely on newer
 functionality from its runtime counterparts (`GRPCCore` and `GRPCProtobuf`).
-This means that you should use the versions of `protoc-gen-grpc-swift` and
+This means that you should use the versions of `protoc-gen-grpc-swift-2` and
 `protoc-gen-swift` resolved with your package rather than getting them from an
 out-of-band (such as `homebrew`).

Sources/GRPCProtobuf/Documentation.docc/Articles/Generating-stubs.md

@@ -87,7 +87,7 @@ The options do not need to be specified and each have default values.
 
 ‡ If you don't provide any import paths then the path to the configuration file will be used on a per-source-file basis.
 
-Many of these options map to `protoc-gen-grpc-swift` and `protoc-gen-swift` options.
+Many of these options map to `protoc-gen-grpc-swift-2` and `protoc-gen-swift` options.
 
 If you require greater flexibility you may specify more than one configuration file.
 Configuration files apply to all `.proto` files equal to or below it in the file hierarchy. A configuration file
@@ -96,26 +96,26 @@ lower in the file hierarchy supersedes one above it.
 ### Using protoc
 
 The [`grpc-swift-protobuf`](https://github.com/grpc/grpc-swift-protobuf) package provides
-`protoc-gen-grpc-swift`, a program which is a plugin for the Protocol Buffers compiler, `protoc`.
+`protoc-gen-grpc-swift-2`, a program which is a plugin for the Protocol Buffers compiler, `protoc`.
 To generate gRPC stubs for your `.proto` files directly you must run the `protoc` command with
 the `--grpc-swift_out=<DIRECTORY>` option:
 
 ```console
 protoc --grpc-swift_out=. my-service.proto
 ```
 
-> `protoc-gen-grpc-swift` only generates gRPC stubs, it doesn't generate messages. You must use
+> `protoc-gen-grpc-swift-2` only generates gRPC stubs, it doesn't generate messages. You must use
 > `protoc-gen-swift` to generate messages in addition to gRPC Stubs.
 
-The presence of `--grpc-swift_out` tells `protoc` to use the `protoc-gen-grpc-swift` plugin. By
+The presence of `--grpc-swift_out` tells `protoc` to use the `protoc-gen-grpc-swift-2` plugin. By
 default it'll look for the plugin in your `PATH`. You can also specify the path to the plugin
 explicitly:
 
 ```console
-protoc --plugin=/path/to/protoc-gen-grpc-swift --grpc-swift_out=. my-service.proto
+protoc --plugin=/path/to/protoc-gen-grpc-swift-2 --grpc-swift_out=. my-service.proto
 ```
 
-You can also specify various option the `protoc-gen-grpc-swift` via `protoc` using
+You can also specify various option the `protoc-gen-grpc-swift-2` via `protoc` using
 the `--grpc-swift_opt` argument:
 
 ```console
@@ -164,14 +164,14 @@ times, where each value is a space delimited pair of platform and version, e.g.
 
 #### Building the protoc plugin
 
-> The version of `protoc-gen-grpc-swift` you use mustn't be newer than the version of
+> The version of `protoc-gen-grpc-swift-2` you use mustn't be newer than the version of
 > the `grpc-swift-protobuf` you're using.
 
-If your package depends on `grpc-swift-protobuf` then you can get a copy of `protoc-gen-grpc-swift`
+If your package depends on `grpc-swift-protobuf` then you can get a copy of `protoc-gen-grpc-swift-2`
 by building it directly:
 
 ```console
-swift build --product protoc-gen-grpc-swift
+swift build --product protoc-gen-grpc-swift-2
 ```
 
 This command will build the plugin into `.build/debug` directory. You can get the full path using