chore: add .NET wrapper for SpannerLib

.github/workflows/spanner-lib-tests.yml

@@ -48,19 +48,27 @@ jobs:
       - name: Build shared library
         working-directory: spannerlib/shared
         run: go build -o spannerlib.so -buildmode=c-shared shared_lib.go
+      - name: Build gRPC server
+        working-directory: spannerlib/grpc-server
+        run: |
+          go build -o grpc_server server.go
+          chmod +x grpc_server
       - name: Copy to Java wrapper
         working-directory: spannerlib
         run: |
           echo "$RUNNER_OS"
           if [ "$RUNNER_OS" == "Windows" ]; then
             mkdir -p wrappers/spannerlib-java/src/main/resources/win32-x86-64
             cp shared/spannerlib.so wrappers/spannerlib-java/src/main/resources/win32-x86-64/spanner.dll
+            cp grpc-server/grpc_server wrappers/spannerlib-java/src/main/resources/win32-x86-64/grpc_server
           elif [ "$RUNNER_OS" == "macOS" ]; then
             mkdir -p wrappers/spannerlib-java/src/main/resources/darwin-aarch64
             cp shared/spannerlib.so wrappers/spannerlib-java/src/main/resources/darwin-aarch64/libspanner.dylib
+            cp grpc-server/grpc_server wrappers/spannerlib-java/src/main/resources/darwin-aarch64/grpc_server
           else
             mkdir -p wrappers/spannerlib-java/src/main/resources/linux-x86-64
             cp shared/spannerlib.so wrappers/spannerlib-java/src/main/resources/linux-x86-64/libspanner.so
+            cp grpc-server/grpc_server wrappers/spannerlib-java/src/main/resources/linux-x86-64/grpc_server
           fi
         shell: bash
       - name: ls spannerlib.so
@@ -71,3 +79,90 @@ jobs:
         run: mvn -Djna.debug_load=true test
         working-directory: spannerlib/wrappers/spannerlib-java
         shell: bash
+
+  dotnet-wrapper:
+    strategy:
+      matrix:
+        go-version: [1.25.x]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Install dotnet
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '9.0.x'
+      - name: Install Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          submodules: 'true'
+      - name: Build shared library
+        working-directory: spannerlib/shared
+        run: go build -o spannerlib.so -buildmode=c-shared shared_lib.go
+      - name: Copy to .NET wrapper
+        working-directory: spannerlib
+        run: |
+          mkdir -p wrappers/spannerlib-dotnet/spannerlib-dotnet-native/libraries/any
+          if [ "$RUNNER_OS" == "Windows" ]; then
+            cp shared/spannerlib.so wrappers/spannerlib-dotnet/spannerlib-dotnet-native/libraries/any/spannerlib.dll
+          else
+            cp shared/spannerlib.so wrappers/spannerlib-dotnet/spannerlib-dotnet-native/libraries/any/spannerlib
+          fi
+        shell: bash
+      - name: Build .NET native library package
+        run: dotnet pack
+        working-directory: spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-native
+        shell: bash
+      - name: Add .NET package source
+        run: |
+          if [ "$RUNNER_OS" == "Windows" ]; then
+            echo ${GITHUB_WORKSPACE}"\spannerlib\wrappers\spannerlib-dotnet\spannerlib-dotnet-native\bin\Release"
+            dotnet nuget add source ${GITHUB_WORKSPACE}"\spannerlib\wrappers\spannerlib-dotnet\spannerlib-dotnet-native\bin\Release" --name local
+          else
+            dotnet nuget add source "$PWD"/bin/Release --name local
+          fi
+        working-directory: spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-native
+        shell: bash
+      - name: Build gRPC server
+        working-directory: spannerlib/grpc-server
+        run: |
+          go build -o grpc_server server.go
+          chmod +x grpc_server
+      - name: Copy gRPC server to .NET wrapper
+        working-directory: spannerlib
+        run: |
+          mkdir -p wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-server/binaries/any
+          if [ "$RUNNER_OS" == "Windows" ]; then
+            cp grpc-server/grpc_server wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-server/binaries/any/grpc_server.exe
+          else
+            cp grpc-server/grpc_server wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-server/binaries/any/grpc_server
+          fi
+        shell: bash
+      - name: Build .NET gRPC server package
+        run: dotnet pack
+        working-directory: spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-server
+        shell: bash
+      - name: Add .NET package source
+        run: |
+          if [ "$RUNNER_OS" == "Windows" ]; then
+            dotnet nuget add source ${GITHUB_WORKSPACE}"\spannerlib\wrappers\spannerlib-dotnet\spannerlib-dotnet-grpc-server\bin\Release" --name local-grpc-server
+          else
+            dotnet nuget add source "$PWD"/bin/Release --name local-grpc-server
+          fi
+        working-directory: spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-server
+        shell: bash
+      - name: Restore dependencies
+        run: dotnet restore
+        working-directory: spannerlib/wrappers/spannerlib-dotnet
+        shell: bash
+      - name: Build
+        run: dotnet build --no-restore
+        working-directory: spannerlib/wrappers/spannerlib-dotnet
+        shell: bash
+      - name: .NET Unit Tests
+        working-directory: spannerlib/wrappers/spannerlib-dotnet/spannerlib-dotnet-tests
+        run: dotnet test --no-build --verbosity normal
+        shell: bash

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "spannerlib/grpc-server/googleapis"]
+	path = spannerlib/grpc-server/googleapis
+	url = [email protected]:googleapis/googleapis.git

spannerlib/go.mod

@@ -10,7 +10,9 @@ require (
 	cloud.google.com/go/longrunning v0.6.7
 	cloud.google.com/go/spanner v1.86.0
 	github.com/google/go-cmp v0.7.0
+	github.com/google/uuid v1.6.0
 	github.com/googleapis/go-sql-spanner v1.19.0
+	google.golang.org/genproto/googleapis/api v0.0.0-20250818200422-3122310a409c
 	google.golang.org/grpc v1.76.0
 	google.golang.org/protobuf v1.36.10
 )
@@ -36,7 +38,6 @@ require (
 	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
-	github.com/google/uuid v1.6.0 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.3.6 // indirect
 	github.com/googleapis/gax-go/v2 v2.15.0 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
@@ -62,6 +63,5 @@ require (
 	golang.org/x/time v0.13.0 // indirect
 	google.golang.org/api v0.252.0 // indirect
 	google.golang.org/genproto v0.0.0-20250804133106-a7a43d27e69b // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20250818200422-3122310a409c // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20251007200510-49b9836ed3ff // indirect
 )

spannerlib/grpc-server/build-dotnet-darwin-aarch64.sh

@@ -0,0 +1,4 @@
+go build -o grpc_server server.go
+chmod +x grpc_server
+cp grpc_server ../wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc/binaries/any/grpc_server
+cp grpc_server ../wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc/binaries/osx-arm64/grpc_server

spannerlib/grpc-server/build-java-darwin-aarch64.sh

@@ -0,0 +1,4 @@
+go build -o grpc_server server.go
+chmod +x grpc_server
+mkdir -p ../wrappers/spannerlib-java/src/main/resources/darwin-aarch64
+cp grpc_server ../wrappers/spannerlib-java/src/main/resources/darwin-aarch64/grpc_server

spannerlib/grpc-server/build-protos.sh

@@ -0,0 +1,25 @@
+PATH="${PATH}:${HOME}/go/bin"
+ln -sf "${PWD}"/google/spannerlib googleapis/google/spannerlib
+cd googleapis || exit 1
+protoc \
+  --go_out=../ \
+  --go_opt=paths=source_relative \
+  --go-grpc_out=../ \
+  --go-grpc_opt=paths=source_relative \
+  google/spannerlib/v1/spannerlib.proto
+protoc \
+  --java_out=../../wrappers/spannerlib-java/src/main/java/ \
+  --plugin=protoc-gen-java-grpc=/Users/loite/protoc-gen-grpc-java-1.75.0-osx-aarch_64.exe \
+  --java-grpc_out=../../wrappers/spannerlib-java/src/main/java/ \
+  --java-grpc_opt=paths=source_relative \
+  google/spannerlib/v1/spannerlib.proto
+protoc \
+  --csharp_out=../../wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-v1/ \
+  --plugin=protoc-gen-csharp_grpc=/Users/loite/.nuget/packages/grpc.tools/2.72.0/tools/macosx_x64/grpc_csharp_plugin \
+  --csharp_grpc_out=../../wrappers/spannerlib-dotnet/spannerlib-dotnet-grpc-v1/ \
+  --csharp_opt=file_extension=.g.cs \
+  --csharp_grpc_opt=no_server \
+  --proto_path=. \
+  google/spannerlib/v1/spannerlib.proto
+cd .. || exit 1
+rm googleapis/google/spannerlib

spannerlib/grpc-server/google/spannerlib/spannerlib

@@ -0,0 +1 @@
+/Users/loite/GolandProjects/go-sql-spanner/spannerlib/grpc-server/google/spannerlib