move util.Key into its own package under blocks

net/conn/conn.go

@@ -157,7 +157,7 @@ func ID(c Conn) string {
 	lh := u.Hash([]byte(l))
 	rh := u.Hash([]byte(r))
 	ch := u.XOR(lh, rh)
-	return u.Key(ch).Pretty()
+	return peer.ID(ch).Pretty()
 }
 
 // String returns the user-friendly String representation of a conn

net/conn/interface.go

@@ -5,9 +5,9 @@ import (
 	"net"
 	"time"
 
+	key "github.com/ipfs/go-ipfs/blocks/key"
 	ic "github.com/ipfs/go-ipfs/p2p/crypto"
 	peer "github.com/ipfs/go-ipfs/p2p/peer"
-	u "github.com/ipfs/go-ipfs/util"
 
 	msgio "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-msgio"
 	ma "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
@@ -15,7 +15,7 @@ import (
 )
 
 // Map maps Keys (Peer.IDs) to Connections.
-type Map map[u.Key]Conn
+type Map map[key.Key]Conn
 
 type PeerConn interface {
 	io.Closer

peer/queue/distance.go

@@ -5,9 +5,9 @@ import (
 	"math/big"
 	"sync"
 
+	key "github.com/ipfs/go-ipfs/blocks/key"
 	peer "github.com/ipfs/go-ipfs/p2p/peer"
 	ks "github.com/ipfs/go-ipfs/routing/keyspace"
-	u "github.com/ipfs/go-ipfs/util"
 )
 
 // peerMetric tracks a peer and its distance to something else.
@@ -93,7 +93,7 @@ func (pq *distancePQ) Dequeue() peer.ID {
 // NewXORDistancePQ returns a PeerQueue which maintains its peers sorted
 // in terms of their distances to each other in an XORKeySpace (i.e. using
 // XOR as a metric of distance).
-func NewXORDistancePQ(fromKey u.Key) PeerQueue {
+func NewXORDistancePQ(fromKey key.Key) PeerQueue {
 	return &distancePQ{
 		from: ks.XORKeySpace.Key([]byte(fromKey)),
 		heap: peerMetricHeap{},

peer/queue/queue_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 	"time"
 
+	key "github.com/ipfs/go-ipfs/blocks/key"
 	peer "github.com/ipfs/go-ipfs/p2p/peer"
 	u "github.com/ipfs/go-ipfs/util"
 
@@ -27,7 +28,7 @@ func TestQueue(t *testing.T) {
 	// [78 135 26 216 178 181 224 181 234 117 2 248 152 115 255 103 244 34 4 152 193 88 9 225 8 127 216 158 226 8 236 246]
 	// [125 135 124 6 226 160 101 94 192 57 39 12 18 79 121 140 190 154 147 55 44 83 101 151 63 255 94 179 51 203 241 51]
 
-	pq := NewXORDistancePQ(u.Key("11140beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a31"))
+	pq := NewXORDistancePQ(key.Key("11140beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a31"))
 	pq.Enqueue(p3)
 	pq.Enqueue(p1)
 	pq.Enqueue(p2)
@@ -81,7 +82,7 @@ func TestSyncQueue(t *testing.T) {
 	}
 
 	ctx := context.Background()
-	pq := NewXORDistancePQ(u.Key("11140beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a31"))
+	pq := NewXORDistancePQ(key.Key("11140beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a31"))
 	cq := NewChanQueue(ctx, pq)
 	wg := sync.WaitGroup{}