/
loader.go
85 lines (81 loc) · 1.93 KB
/
loader.go
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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.
package avro
import (
"errors"
"fmt"
"io"
)
func (r *OCFReader) decodeOCFToChan() {
defer close(r.avroChan)
for r.r.HasNext() {
select {
case <-r.readerCtx.Done():
r.err = fmt.Errorf("avro decoding cancelled, %d records read", r.avroDatumCount)
return
default:
var datum any
err := r.r.Decode(&datum)
if err != nil {
if errors.Is(err, io.EOF) {
r.err = nil
return
}
r.err = err
return
}
r.avroChan <- datum
r.avroDatumCount++
}
}
}
func (r *OCFReader) recordFactory() {
defer close(r.recChan)
r.primed = true
recChunk := 0
switch {
case r.chunk < 1:
for data := range r.avroChan {
err := r.ldr.loadDatum(data)
if err != nil {
r.err = err
return
}
}
r.recChan <- r.bld.NewRecord()
r.bldDone <- struct{}{}
case r.chunk >= 1:
for data := range r.avroChan {
if recChunk == 0 {
r.bld.Reserve(r.chunk)
}
err := r.ldr.loadDatum(data)
if err != nil {
r.err = err
return
}
recChunk++
if recChunk >= r.chunk {
r.recChan <- r.bld.NewRecord()
recChunk = 0
}
}
if recChunk != 0 {
r.recChan <- r.bld.NewRecord()
}
r.bldDone <- struct{}{}
}
}