/
init.go
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/
init.go
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// Copyright 2021 dfuse Platform Inc.
//
// Licensed 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 types
import (
"fmt"
"io"
"time"
"github.com/streamingfast/bstream"
pbbstream "github.com/streamingfast/pbgo/sf/bstream/v1"
)
func init() {
bstream.GetBlockWriterFactory = bstream.BlockWriterFactoryFunc(blockWriterFactory)
bstream.GetBlockReaderFactory = bstream.BlockReaderFactoryFunc(blockReaderFactory)
bstream.GetBlockDecoder = bstream.BlockDecoderFunc(BlockDecoder)
bstream.GetBlockWriterHeaderLen = 10
bstream.GetBlockPayloadSetter = bstream.MemoryBlockPayloadSetter
bstream.GetMemoizeMaxAge = 20 * time.Second
}
func blockReaderFactory(reader io.Reader) (bstream.BlockReader, error) {
return bstream.NewDBinBlockReader(reader, func(contentType string, version int32) error {
protocol := pbbstream.Protocol(pbbstream.Protocol_value[contentType])
if protocol != pbbstream.Protocol_EOS && version != 1 {
return fmt.Errorf("reader only knows about %s block kind at version 1, got %s at version %d", protocol, contentType, version)
}
return nil
})
}
func blockWriterFactory(writer io.Writer) (bstream.BlockWriter, error) {
return bstream.NewDBinBlockWriter(writer, pbbstream.Protocol_EOS.String(), 1)
}