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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build cdata_integration
// +build cdata_integration
package main
import (
"fmt"
"os"
"runtime"
"unsafe"
"github.com/apache/arrow-go/v18/arrow/array"
"github.com/apache/arrow-go/v18/arrow/cdata"
"github.com/apache/arrow-go/v18/arrow/internal/arrjson"
"github.com/apache/arrow-go/v18/arrow/memory"
"github.com/apache/arrow-go/v18/internal/utils"
)
// #include <stdint.h>
// #include <stdlib.h>
import "C"
var alloc = memory.NewCheckedAllocator(memory.NewGoAllocator())
//export ArrowGo_BytesAllocated
func ArrowGo_BytesAllocated() int64 {
return int64(alloc.CurrentAlloc())
}
//export ArrowGo_RunGC
func ArrowGo_RunGC() {
runtime.GC()
}
//export ArrowGo_FreeError
func ArrowGo_FreeError(cError *C.char) {
C.free(unsafe.Pointer(cError))
}
// When used in a defer() statement, this functions catches an incoming
// panic and converts it into a regular error. This avoids crashing the
// archery integration process and lets other tests proceed.
// Not all panics may be caught and some will still crash the process, though.
func handlePanic(err *error) {
if e := recover(); e != nil {
// Add a prefix while wrapping the panic-error
*err = utils.FormatRecoveredError("panic", e)
}
}
func newJsonReader(cJsonPath *C.char) (*arrjson.Reader, error) {
jsonPath := C.GoString(cJsonPath)
f, err := os.Open(jsonPath)
if err != nil {
return nil, fmt.Errorf("could not open JSON file %q: %w", jsonPath, err)
}
defer f.Close()
jsonReader, err := arrjson.NewReader(f, arrjson.WithAllocator(alloc))
if err != nil {
return nil, fmt.Errorf("could not open JSON file reader from file %q: %w", jsonPath, err)
}
return jsonReader, nil
}
func exportSchemaFromJson(cJsonPath *C.char, out *cdata.CArrowSchema) error {
jsonReader, err := newJsonReader(cJsonPath)
if err != nil {
return err
}
defer jsonReader.Release()
schema := jsonReader.Schema()
defer handlePanic(&err)
cdata.ExportArrowSchema(schema, out)
return err
}
func importSchemaAndCompareToJson(cJsonPath *C.char, cSchema *cdata.CArrowSchema) error {
jsonReader, err := newJsonReader(cJsonPath)
if err != nil {
return err
}
defer jsonReader.Release()
schema := jsonReader.Schema()
importedSchema, err := cdata.ImportCArrowSchema(cSchema)
if err != nil {
return err
}
if !schema.Equal(importedSchema) || !schema.Metadata().Equal(importedSchema.Metadata()) {
return fmt.Errorf(
"Schemas are different:\n- Json Schema: %s\n- Imported Schema: %s",
schema.String(),
importedSchema.String())
}
return nil
}
func exportBatchFromJson(cJsonPath *C.char, num_batch int, out *cdata.CArrowArray) error {
// XXX this function exports a single batch at a time, but the JSON reader
// reads all batches at construction.
jsonReader, err := newJsonReader(cJsonPath)
if err != nil {
return err
}
defer jsonReader.Release()
batch, err := jsonReader.ReadAt(num_batch)
if err != nil {
return err
}
defer handlePanic(&err)
cdata.ExportArrowRecordBatch(batch, out, nil)
return err
}
func importBatchAndCompareToJson(cJsonPath *C.char, num_batch int, cArray *cdata.CArrowArray) error {
jsonReader, err := newJsonReader(cJsonPath)
if err != nil {
return err
}
defer jsonReader.Release()
schema := jsonReader.Schema()
batch, err := jsonReader.ReadAt(num_batch)
if err != nil {
return err
}
importedBatch, err := cdata.ImportCRecordBatchWithSchema(cArray, schema)
if err != nil {
return err
}
defer importedBatch.Release()
if !array.RecordEqual(batch, importedBatch) {
return fmt.Errorf(
"Batches are different:\n- Json Batch: %v\n- Imported Batch: %v",
batch, importedBatch)
}
return nil
}
//export ArrowGo_ExportSchemaFromJson
func ArrowGo_ExportSchemaFromJson(cJsonPath *C.char, out uintptr) *C.char {
err := exportSchemaFromJson(cJsonPath, cdata.SchemaFromPtr(out))
if err != nil {
return C.CString(err.Error())
}
return nil
}
//export ArrowGo_ExportBatchFromJson
func ArrowGo_ExportBatchFromJson(cJsonPath *C.char, num_batch int, out uintptr) *C.char {
err := exportBatchFromJson(cJsonPath, num_batch, cdata.ArrayFromPtr(out))
if err != nil {
return C.CString(err.Error())
}
return nil
}
//export ArrowGo_ImportSchemaAndCompareToJson
func ArrowGo_ImportSchemaAndCompareToJson(cJsonPath *C.char, cSchema uintptr) *C.char {
err := importSchemaAndCompareToJson(cJsonPath, cdata.SchemaFromPtr(cSchema))
if err != nil {
return C.CString(err.Error())
}
return nil
}
//export ArrowGo_ImportBatchAndCompareToJson
func ArrowGo_ImportBatchAndCompareToJson(cJsonPath *C.char, num_batch int, cArray uintptr) *C.char {
err := importBatchAndCompareToJson(cJsonPath, num_batch, cdata.ArrayFromPtr(cArray))
if err != nil {
return C.CString(err.Error())
}
return nil
}
func main() {}
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