extract constants

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

exchange/bitswap/bitswap.go

@@ -29,6 +29,7 @@ const (
 	maxProvidersPerRequest = 3
 	providerRequestTimeout = time.Second * 10
 	hasBlockTimeout        = time.Second * 15
+	sizeBatchRequestChan   = 32
 )
 
 var (
@@ -59,7 +60,7 @@ func New(parent context.Context, p peer.Peer, network bsnet.BitSwapNetwork, rout
 		routing:       routing,
 		sender:        network,
 		wantlist:      wantlist.NewThreadSafe(),
-		batchRequests: make(chan []u.Key, 32),
+		batchRequests: make(chan []u.Key, sizeBatchRequestChan),
 	}
 	network.SetDelegate(bs)
 	go bs.clientWorker(ctx)

exchange/bitswap/decision/engine.go

@@ -13,6 +13,10 @@ import (
 
 var log = u.Logger("engine")
 
+const (
+	sizeOutboxChan = 4
+)
+
 // Envelope contains a message for a Peer
 type Envelope struct {
 	// Peer is the intended recipient
@@ -43,7 +47,7 @@ func NewEngine(ctx context.Context, bs bstore.Blockstore) *Engine {
 		ledgerMap:        make(map[u.Key]*ledger),
 		bs:               bs,
 		peerRequestQueue: newTaskQueue(),
-		outbox:           make(chan Envelope, 4), // TODO extract constant
+		outbox:           make(chan Envelope, sizeOutboxChan),
 		workSignal:       make(chan struct{}),
 	}
 	go e.taskWorker(ctx)