let wantlist command show other peers wantlists

bitswap.go

@@ -175,6 +175,14 @@ func (bs *Bitswap) GetBlock(parent context.Context, k u.Key) (*blocks.Block, err
 	}
 }
 
+func (bs *Bitswap) WantlistForPeer(p peer.ID) []u.Key {
+	var out []u.Key
+	for _, e := range bs.engine.WantlistForPeer(p) {
+		out = append(out, e.Key)
+	}
+	return out
+}
+
 // GetBlocks returns a channel where the caller may receive blocks that
 // correspond to the provided |keys|. Returns an error if BitSwap is unable to
 // begin this request within the deadline enforced by the context.

decision/engine.go

@@ -96,6 +96,16 @@ func NewEngine(ctx context.Context, bs bstore.Blockstore) *Engine {
 	return e
 }
 
+func (e *Engine) WantlistForPeer(p peer.ID) (out []wl.Entry) {
+	e.lock.Lock()
+	partner, ok := e.ledgerMap[p]
+	if ok {
+		out = partner.wantList.SortedEntries()
+	}
+	e.lock.Unlock()
+	return out
+}
+
 func (e *Engine) taskWorker(ctx context.Context) {
 	defer close(e.outbox) // because taskWorker uses the channel exclusively
 	for {