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stream.go
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stream.go
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package connmgr
import (
"context"
"encoding/json"
"fmt"
"io"
"log"
"time"
"github.com/HORNET-Storage/go-hornet-storage-lib/lib"
types "github.com/HORNET-Storage/go-hornet-storage-lib/lib"
"github.com/fxamacker/cbor/v2"
"github.com/libp2p/go-libp2p/core/network"
)
func WaitForResponse(ctx context.Context, stream network.Stream) bool {
streamDecoder := cbor.NewDecoder(stream)
var response types.ResponseMessage
timeout := time.NewTimer(5 * time.Second)
wait:
for {
select {
case <-timeout.C:
return false
default:
if err := streamDecoder.Decode(&response); err == nil {
break wait
}
}
}
if !response.Ok {
return false
}
return true
}
func WaitForUploadMessage(ctx context.Context, stream network.Stream) (bool, *lib.UploadMessage) {
streamDecoder := cbor.NewDecoder(stream)
var message types.UploadMessage
timeout := time.NewTimer(5 * time.Second)
wait:
for {
select {
case <-timeout.C:
return false, nil
default:
err := streamDecoder.Decode(&message)
if err != nil {
log.Printf("Error reading from stream: %e", err)
}
if err == io.EOF {
return false, nil
}
if err == nil {
break wait
}
}
}
return true, &message
}
func WriteResponseToStream(ctx context.Context, stream network.Stream, response bool) error {
streamEncoder := cbor.NewEncoder(stream)
message := types.ResponseMessage{
Ok: response,
}
if err := streamEncoder.Encode(&message); err != nil {
return err
}
return nil
}
func ReadMessageFromStream[T any](stream network.Stream) (*T, error) {
streamDecoder := cbor.NewDecoder(stream)
var message T
timeout := time.NewTimer(5 * time.Second)
wait:
for {
select {
case <-timeout.C:
return nil, fmt.Errorf("WaitForMessage timed out")
default:
err := streamDecoder.Decode(&message)
if err != nil {
return nil, err
}
if err == io.EOF {
return nil, err
}
break wait
}
}
return &message, nil
}
func WriteMessageToStream[T any](stream network.Stream, message T) error {
enc := cbor.NewEncoder(stream)
if err := enc.Encode(&message); err != nil {
return err
}
return nil
}
func ReadJsonMessageFromStream[T any](stream network.Stream) (*T, error) {
streamDecoder := json.NewDecoder(stream)
var message T
timeout := time.NewTimer(5 * time.Second)
wait:
for {
select {
case <-timeout.C:
return nil, fmt.Errorf("WaitForMessage timed out")
default:
err := streamDecoder.Decode(&message)
if err != nil {
return nil, err
}
if err == io.EOF {
return nil, err
}
break wait
}
}
return &message, nil
}
func WriteJsonMessageToStream[T any](stream network.Stream, message T) error {
enc := json.NewEncoder(stream)
if err := enc.Encode(&message); err != nil {
return err
}
return nil
}