[SPARK-44681] Fix issues when writing Go application code using Spark…

… Connect Go client library

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

When trying to write Go application code using Spark Connect Go client and put the Go application code in users' own repo (e.g. https://github.com/user-foo/my-go-application), the Go application code cannot resolve Spark Connect Go client from `https://github.com/apache/spark-connect-go` correctly, due to two issues:

1. The name `github.com/apache/spark-connect-go/v_3_4` cannot resolve correctly to find the module, it complains not finding `go.mod` file under `github.com/apache/spark-connect-go/v_3_4`. After change the name to `github.com/apache/spark-connect-go/v34`, it is good.

2. The Go application code needs generated Go protobuf code as well. Thus need to commit the generated Go protobuf code into `github.com/apache/spark-connect-go` repo.

### Why are the changes needed?

See above.

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

No.

### How was this patch tested?

Tested by run Go application code to use Spark Connect Go client.

Closes #14 from hiboyang/bo-dev-05.

Authored-by: hiboyang <14280154+hiboyang@users.noreply.github.com>
Signed-off-by: Ruifeng Zheng <ruifengz@apache.org>

.gitignore

@@ -16,7 +16,6 @@
 #
 
 # All generated files
-internal/generated
 internal/generated.out
 
 # Ignore Coverage Files

client/channel/channel_test.go

@@ -20,7 +20,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/apache/spark-connect-go/v_3_4/client/channel"
+	"github.com/apache/spark-connect-go/v34/client/channel"
 	"github.com/stretchr/testify/assert"
 )
 

client/sql/dataframe.go

@@ -23,7 +23,7 @@ import (
 	"github.com/apache/arrow/go/v12/arrow"
 	"github.com/apache/arrow/go/v12/arrow/array"
 	"github.com/apache/arrow/go/v12/arrow/ipc"
-	proto "github.com/apache/spark-connect-go/v_3_4/internal/generated"
+	proto "github.com/apache/spark-connect-go/v34/internal/generated"
 	"io"
 )
 

client/sql/dataframe_test.go

@@ -25,7 +25,7 @@ import (
 	"github.com/apache/arrow/go/v12/arrow/float16"
 	"github.com/apache/arrow/go/v12/arrow/ipc"
 	"github.com/apache/arrow/go/v12/arrow/memory"
-	proto "github.com/apache/spark-connect-go/v_3_4/internal/generated"
+	proto "github.com/apache/spark-connect-go/v34/internal/generated"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"testing"

client/sql/dataframereader.go

@@ -1,6 +1,6 @@
 package sql
 
-import proto "github.com/apache/spark-connect-go/v_3_4/internal/generated"
+import proto "github.com/apache/spark-connect-go/v34/internal/generated"
 
 // DataFrameReader supports reading data from storage and returning a data frame.
 // TODO needs to implement other methods like Option(), Schema(), and also "strong typed"

client/sql/dataframewriter.go

@@ -2,7 +2,7 @@ package sql
 
 import (
 	"fmt"
-	proto "github.com/apache/spark-connect-go/v_3_4/internal/generated"
+	proto "github.com/apache/spark-connect-go/v34/internal/generated"
 	"strings"
 )
 

client/sql/dataframewriter_test.go

@@ -1,7 +1,7 @@
 package sql
 
 import (
-	proto "github.com/apache/spark-connect-go/v_3_4/internal/generated"
+	proto "github.com/apache/spark-connect-go/v34/internal/generated"
 	"github.com/stretchr/testify/assert"
 	"testing"
 )

client/sql/sparksession.go

@@ -21,8 +21,8 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/apache/spark-connect-go/v_3_4/client/channel"
-	proto "github.com/apache/spark-connect-go/v_3_4/internal/generated"
+	"github.com/apache/spark-connect-go/v34/client/channel"
+	proto "github.com/apache/spark-connect-go/v34/internal/generated"
 	"github.com/google/uuid"
 	"google.golang.org/grpc/metadata"
 	"io"

cmd/spark-connect-example-raw-grpc-client/main.go

@@ -19,7 +19,7 @@ package main
 import (
 	"context"
 	"flag"
-	proto "github.com/apache/spark-connect-go/v_3_4/internal/generated"
+	proto "github.com/apache/spark-connect-go/v34/internal/generated"
 	"github.com/google/uuid"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"

cmd/spark-connect-example-spark-session/main.go

@@ -20,7 +20,7 @@ import (
 	"flag"
 	"log"
 
-	"github.com/apache/spark-connect-go/v_3_4/client/sql"
+	"github.com/apache/spark-connect-go/v34/client/sql"
 )
 
 var (

go.mod

@@ -13,7 +13,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-module github.com/apache/spark-connect-go/v_3_4
+module github.com/apache/spark-connect-go/v34
 
 go 1.19