1 files changed, 24 insertions, 11 deletions
diff --git a/swarm/api/inspector.go b/swarm/api/inspector.go
index 2ae6b4da8..c4151bf20 100644
--- a/swarm/api/inspector.go
+++ b/swarm/api/inspector.go
@@ -19,7 +19,11 @@ package api
 import (
 	"context"
 	"fmt"
+	"strings"
+	"time"
 
+	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/ethereum/go-ethereum/swarm/log"
 	"github.com/ethereum/go-ethereum/swarm/network"
 	"github.com/ethereum/go-ethereum/swarm/storage"
 )
@@ -47,25 +51,34 @@ func (inspector *Inspector) ListKnown() []string {
 	return res
 }
 
-type HasInfo struct {
-	Addr string `json:"address"`
-	Has  bool   `json:"has"`
+func (inspector *Inspector) IsSyncing() bool {
+	lastReceivedChunksMsg := metrics.GetOrRegisterGauge("network.stream.received_chunks", nil)
+
+	// last received chunks msg time
+	lrct := time.Unix(0, lastReceivedChunksMsg.Value())
+
+	// if last received chunks msg time is after now-15sec. (i.e. within the last 15sec.) then we say that the node is still syncing
+	// technically this is not correct, because this might have been a retrieve request, but for the time being it works for our purposes
+	// because we know we are not making retrieve requests on the node while checking this
+	return lrct.After(time.Now().Add(-15 * time.Second))
 }
 
 // Has checks whether each chunk address is present in the underlying datastore,
 // the bool in the returned structs indicates if the underlying datastore has
 // the chunk stored with the given address (true), or not (false)
-func (inspector *Inspector) Has(chunkAddresses []storage.Address) []HasInfo {
-	results := make([]HasInfo, 0)
+func (inspector *Inspector) Has(chunkAddresses []storage.Address) string {
+	hostChunks := []string{}
 	for _, addr := range chunkAddresses {
-		res := HasInfo{}
-		res.Addr = addr.String()
 		has, err := inspector.netStore.Has(context.Background(), addr)
 		if err != nil {
-			has = false
+			log.Error(err.Error())
+		}
+		if has {
+			hostChunks = append(hostChunks, "1")
+		} else {
+			hostChunks = append(hostChunks, "0")
 		}
-		res.Has = has
-		results = append(results, res)
 	}
-	return results
+
+	return strings.Join(hostChunks, "")
 }