seaweedfs/weed/filer/read.go

package filer

import (
	"bytes"
	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
	"github.com/chrislusf/seaweedfs/weed/wdclient"
	"math"
)

func ReadEntry(masterClient *wdclient.MasterClient, filerClient filer_pb.SeaweedFilerClient, dir, name string, byteBuffer *bytes.Buffer) error {

	request := &filer_pb.LookupDirectoryEntryRequest{
		Directory: dir,
		Name:      name,
	}
	respLookupEntry, err := filer_pb.LookupEntry(filerClient, request)
	if err != nil {
		return err
	}
	if len(respLookupEntry.Entry.Content) > 0 {
		_, err = byteBuffer.Write(respLookupEntry.Entry.Content)
		return err
	}

	return StreamContent(masterClient, byteBuffer, respLookupEntry.Entry.Chunks, 0, math.MaxInt64)

}