Fix NIO imports (#171)

### Motivation

- SwiftNIO 2.32.0 introduces explicit modules for its Core and Posix.
- To write great platform independent code in most parts we should only ever import `NIOCore`

### Changes

- This pr explicitly imports NIOCore, NIOPosix and NIOEmbedded where needed.

Package.swift

@@ -13,7 +13,7 @@ let package = Package(
         .library(name: "PostgresNIO", targets: ["PostgresNIO"]),
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-nio.git", from: "2.28.0"),
+        .package(url: "https://github.com/apple/swift-nio.git", from: "2.32.0"),
         .package(url: "https://github.com/apple/swift-nio-ssl.git", from: "2.12.0"),
         .package(url: "https://github.com/apple/swift-crypto.git", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-metrics.git", from: "2.0.0"),
@@ -25,12 +25,15 @@ let package = Package(
             .product(name: "Logging", package: "swift-log"),
             .product(name: "Metrics", package: "swift-metrics"),
             .product(name: "NIO", package: "swift-nio"),
+            .product(name: "NIOCore", package: "swift-nio"),
+            .product(name: "NIOPosix", package: "swift-nio"),
             .product(name: "NIOTLS", package: "swift-nio"),
-            .product(name: "NIOFoundationCompat", package: "swift-nio"),
             .product(name: "NIOSSL", package: "swift-nio-ssl"),
+            .product(name: "NIOFoundationCompat", package: "swift-nio"),
         ]),
         .testTarget(name: "PostgresNIOTests", dependencies: [
             .target(name: "PostgresNIO"),
+            .product(name: "NIOEmbedded", package: "swift-nio"),
             .product(name: "NIOTestUtils", package: "swift-nio"),
         ]),
         .testTarget(name: "IntegrationTests", dependencies: [

Sources/PostgresNIO/Connection/PostgresConnection+Authenticate.swift

@@ -1,4 +1,5 @@
-import NIO
+import NIOCore
+import Logging
 
 extension PostgresConnection {
     public func authenticate(

Sources/PostgresNIO/Connection/PostgresConnection+Connect.swift

@@ -1,4 +1,6 @@
-import NIO
+import NIOCore
+import NIOSSL
+import Logging
 
 extension PostgresConnection {
     public static func connect(

Sources/PostgresNIO/Connection/PostgresConnection+Database.swift

@@ -1,3 +1,4 @@
+import NIOCore
 import Logging
 import struct Foundation.Data
 

Sources/PostgresNIO/Connection/PostgresConnection+Notifications.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 import Logging
 
 /// Context for receiving NotificationResponse messages on a connection, used for PostgreSQL's `LISTEN`/`NOTIFY` support.

Sources/PostgresNIO/Connection/PostgresConnection.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 import Logging
 import struct Foundation.UUID
 

Sources/PostgresNIO/Connection/PostgresDatabase+PreparedQuery.swift

@@ -1,4 +1,5 @@
-import Foundation
+import NIOCore
+import struct Foundation.UUID
 
 extension PostgresDatabase {
     public func prepare(query: String) -> EventLoopFuture<PreparedQuery> {

Sources/PostgresNIO/Data/PostgresData+Array.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension PostgresData {
     public init<T>(array: [T])
         where T: PostgresDataConvertible

Sources/PostgresNIO/Data/PostgresData+Bool.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension PostgresData {
     public init(bool: Bool) {
         var buffer = ByteBufferAllocator().buffer(capacity: 1)

Sources/PostgresNIO/Data/PostgresData+Bytes.swift

@@ -1,4 +1,5 @@
 import struct Foundation.Data
+import NIOCore
 
 extension PostgresData {
     public init<Bytes>(bytes: Bytes)

Sources/PostgresNIO/Data/PostgresData+Date.swift

@@ -1,4 +1,5 @@
-import Foundation
+import struct Foundation.Date
+import NIOCore
 
 extension PostgresData {
     public init(date: Date) {

Sources/PostgresNIO/Data/PostgresData+Double.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension PostgresData {
     public init(double: Double) {
         var buffer = ByteBufferAllocator().buffer(capacity: 0)

Sources/PostgresNIO/Data/PostgresData+JSON.swift

@@ -1,4 +1,5 @@
-import Foundation
+import struct Foundation.Data
+import NIOCore
 
 extension PostgresData {
     public init(json jsonData: Data) {

Sources/PostgresNIO/Data/PostgresData+JSONB.swift

@@ -1,4 +1,5 @@
-import Foundation
+import NIOCore
+import struct Foundation.Data
 
 fileprivate let jsonBVersionBytes: [UInt8] = [0x01]
 

Sources/PostgresNIO/Data/PostgresData+Numeric.swift

@@ -1,3 +1,4 @@
+import NIOCore
 import struct Foundation.Decimal
 
 public struct PostgresNumeric: CustomStringConvertible, CustomDebugStringConvertible, ExpressibleByStringLiteral {

Sources/PostgresNIO/Data/PostgresData+String.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension PostgresData {
     public init(string: String) {
         var buffer = ByteBufferAllocator().buffer(capacity: string.utf8.count)

Sources/PostgresNIO/Data/PostgresData+UUID.swift

@@ -1,4 +1,5 @@
 import Foundation
+import NIOCore
 
 extension PostgresData {
     public init(uuid: UUID) {

Sources/PostgresNIO/Data/PostgresData.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 import Foundation
 
 public struct PostgresData: CustomStringConvertible, CustomDebugStringConvertible {

Sources/PostgresNIO/Message/PostgresMessage+0.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 /// A frontend or backend Postgres message.
 public struct PostgresMessage: Equatable {
     public var identifier: Identifier

Sources/PostgresNIO/Message/PostgresMessage+Authentication.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Authentication request returned by the server.

Sources/PostgresNIO/Message/PostgresMessage+BackendKeyData.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as cancellation key data.

Sources/PostgresNIO/Message/PostgresMessage+Bind.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a Bind command.

Sources/PostgresNIO/Message/PostgresMessage+Close.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a Close Command

Sources/PostgresNIO/Message/PostgresMessage+CommandComplete.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a Close command.

Sources/PostgresNIO/Message/PostgresMessage+DataRow.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a data row.

Sources/PostgresNIO/Message/PostgresMessage+Describe.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a Describe command.

Sources/PostgresNIO/Message/PostgresMessage+Error.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// First message sent from the frontend during startup.

Sources/PostgresNIO/Message/PostgresMessage+Execute.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as an Execute command.

Sources/PostgresNIO/Message/PostgresMessage+Identifier.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies an incoming or outgoing postgres message. Sent as the first byte, before the message size.

Sources/PostgresNIO/Message/PostgresMessage+NotificationResponse.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a notification response.

Sources/PostgresNIO/Message/PostgresMessage+ParameterDescription.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a parameter description.

Sources/PostgresNIO/Message/PostgresMessage+ParameterStatus.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     public struct ParameterStatus: PostgresMessageType, CustomStringConvertible {

Sources/PostgresNIO/Message/PostgresMessage+Parse.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a Parse command.

Sources/PostgresNIO/Message/PostgresMessage+Password.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a password response. Note that this is also used for

Sources/PostgresNIO/Message/PostgresMessage+ReadyForQuery.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message type. ReadyForQuery is sent whenever the backend is ready for a new query cycle.

Sources/PostgresNIO/Message/PostgresMessage+RowDescription.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a row description.

Sources/PostgresNIO/Message/PostgresMessage+SASLResponse.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// SASL ongoing challenge response message sent by the client.

Sources/PostgresNIO/Message/PostgresMessage+SSLRequest.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// A message asking the PostgreSQL server if SSL is supported

Sources/PostgresNIO/Message/PostgresMessage+SimpleQuery.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a simple query.

Sources/PostgresNIO/Message/PostgresMessage+Startup.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// First message sent from the frontend during startup.

Sources/PostgresNIO/Message/PostgresMessage+Sync.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PostgresMessage {
     /// Identifies the message as a Bind command.

Sources/PostgresNIO/Message/PostgresMessage+Terminate.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension PostgresMessage {
     public struct Terminate: PostgresMessageType {
         public static var identifier: PostgresMessage.Identifier {

Sources/PostgresNIO/Message/PostgresMessageDecoder.swift

@@ -1,4 +1,5 @@
-import NIO
+import NIOCore
+import Logging
 
 public final class PostgresMessageDecoder: ByteToMessageDecoder {
     /// See `ByteToMessageDecoder`.

Sources/PostgresNIO/Message/PostgresMessageEncoder.swift

@@ -1,4 +1,5 @@
-import NIO
+import NIOCore
+import Logging
 
 public final class PostgresMessageEncoder: MessageToByteEncoder {
     /// See `MessageToByteEncoder`.

Sources/PostgresNIO/Message/PostgresMessageType.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 public protocol PostgresMessageType {
     static var identifier: PostgresMessage.Identifier { get }
     static func parse(from buffer: inout ByteBuffer) throws -> Self

Sources/PostgresNIO/New/Connection State Machine/AuthenticationStateMachine.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 struct AuthenticationStateMachine {
 

Sources/PostgresNIO/New/Connection State Machine/ConnectionStateMachine.swift

@@ -1,3 +1,4 @@
+import NIOCore
 
 struct ConnectionStateMachine {
 

Sources/PostgresNIO/New/Connection State Machine/ExtendedQueryStateMachine.swift

@@ -1,3 +1,4 @@
+import NIOCore
 
 struct ExtendedQueryStateMachine {
 

Sources/PostgresNIO/New/Data/Array+PSQLCodable.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 import struct Foundation.UUID
 
 /// A type, of which arrays can be encoded into and decoded from a postgres binary format

Sources/PostgresNIO/New/Data/Bool+PSQLCodable.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension Bool: PSQLCodable {
     var psqlType: PSQLDataType {
         .bool

Sources/PostgresNIO/New/Data/Bytes+PSQLCodable.swift

@@ -1,4 +1,5 @@
 import struct Foundation.Data
+import NIOCore
 import NIOFoundationCompat
 
 extension PSQLEncodable where Self: Sequence, Self.Element == UInt8 {

Sources/PostgresNIO/New/Data/Date+PSQLCodable.swift

@@ -1,3 +1,4 @@
+import NIOCore
 import struct Foundation.Date
 
 extension Date: PSQLCodable {

Sources/PostgresNIO/New/Data/Float+PSQLCodable.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension Float: PSQLCodable {
     var psqlType: PSQLDataType {
         .float4

Sources/PostgresNIO/New/Data/Int+PSQLCodable.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension UInt8: PSQLCodable {
     var psqlType: PSQLDataType {
         .char

Sources/PostgresNIO/New/Data/JSON+PSQLCodable.swift

@@ -1,3 +1,4 @@
+import NIOCore
 import NIOFoundationCompat
 import class Foundation.JSONEncoder
 import class Foundation.JSONDecoder

Sources/PostgresNIO/New/Data/Optional+PSQLCodable.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension Optional: PSQLDecodable where Wrapped: PSQLDecodable {
     static func decode(from byteBuffer: inout ByteBuffer, type: PSQLDataType, format: PSQLFormat, context: PSQLDecodingContext) throws -> Optional<Wrapped> {
         preconditionFailure("This code path should never be hit.")

Sources/PostgresNIO/New/Data/RawRepresentable+PSQLCodable.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension PSQLCodable where Self: RawRepresentable, RawValue: PSQLCodable {
     var psqlType: PSQLDataType {
         self.rawValue.psqlType

Sources/PostgresNIO/New/Data/String+PSQLCodable.swift

@@ -1,3 +1,4 @@
+import NIOCore
 import struct Foundation.UUID
 
 extension String: PSQLCodable {

Sources/PostgresNIO/New/Data/UUID+PSQLCodable.swift

@@ -1,3 +1,4 @@
+import NIOCore
 import struct Foundation.UUID
 import typealias Foundation.uuid_t
 

Sources/PostgresNIO/New/Extensions/ByteBuffer+PSQL.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 internal extension ByteBuffer {
     mutating func writeNullTerminatedString(_ string: String) {

Sources/PostgresNIO/New/Messages/Authentication.swift

@@ -1,4 +1,4 @@
-import NIO
+import NIOCore
 
 extension PSQLBackendMessage {
 

Sources/PostgresNIO/New/Messages/BackendKeyData.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension PSQLBackendMessage {
 
     struct BackendKeyData: PayloadDecodable, Equatable {

Sources/PostgresNIO/New/Messages/Bind.swift

@@ -1,3 +1,5 @@
+import NIOCore
+
 extension PSQLFrontendMessage {
 
     struct Bind {