seaweedfs/weed/filer/read_write.go
2020-12-06 23:16:20 -08:00

64 lines
1.5 KiB
Go

package filer
import (
"bytes"
"fmt"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/chrislusf/seaweedfs/weed/wdclient"
"math"
"net/http"
)
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)
}
func ReadContent(filerAddress string, dir, name string) ([]byte, error) {
target := fmt.Sprintf("http://%s%s/%s", filerAddress, dir, name)
data, _, err := util.Get(target)
return data, err
}
func SaveAs(host string, port int, dir, name string, contentType string, byteBuffer *bytes.Buffer) error {
target := fmt.Sprintf("http://%s:%d%s/%s", host, port, dir, name)
// set the HTTP method, url, and request body
req, err := http.NewRequest(http.MethodPut, target, byteBuffer)
if err != nil {
return err
}
// set the request header Content-Type for json
if contentType != "" {
req.Header.Set("Content-Type", contentType)
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
util.CloseResponse(resp)
return nil
}