From 3c8a391fe441ead322b865457947df2d2819e553 Mon Sep 17 00:00:00 2001
From: Jeromy <jeromyj@gmail.com>
Date: Mon, 23 Feb 2015 11:47:49 -0800
Subject: [PATCH] dont put wantlist getter in exchange interface

---
 core/commands/bitswap.go    | 7 ++++++-
 exchange/interface.go       | 2 --
 exchange/offline/offline.go | 5 -----
 3 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/core/commands/bitswap.go b/core/commands/bitswap.go
index 32854a381..284e75e13 100644
--- a/core/commands/bitswap.go
+++ b/core/commands/bitswap.go
@@ -33,8 +33,13 @@ Print out all blocks currently on the bitswap wantlist for the local peer`,
 			res.SetError(err, cmds.ErrNormal)
 			return
 		}
+		bs, ok := nd.Exchange.(*bitswap.Bitswap)
+		if !ok {
+			res.SetError(u.ErrCast(), cmds.ErrNormal)
+			return
+		}
 
-		res.SetOutput(&KeyList{nd.Exchange.GetWantlist()})
+		res.SetOutput(&KeyList{bs.GetWantlist()})
 	},
 	Marshalers: cmds.MarshalerMap{
 		cmds.Text: KeyListTextMarshaler,
diff --git a/exchange/interface.go b/exchange/interface.go
index 8a4189ee8..c07d2a471 100644
--- a/exchange/interface.go
+++ b/exchange/interface.go
@@ -21,7 +21,5 @@ type Interface interface {
 	// available on the network?
 	HasBlock(context.Context, *blocks.Block) error
 
-	GetWantlist() []u.Key
-
 	io.Closer
 }
diff --git a/exchange/offline/offline.go b/exchange/offline/offline.go
index e3e50bbf4..fe8fa723c 100644
--- a/exchange/offline/offline.go
+++ b/exchange/offline/offline.go
@@ -66,8 +66,3 @@ func (e *offlineExchange) GetBlocks(ctx context.Context, ks []u.Key) (<-chan *bl
 	}()
 	return out, nil
 }
-
-// implement Exchange
-func (e *offlineExchange) GetWantlist() []u.Key {
-	return nil
-}