From 40f6ecfa7ac59bc9aae3b76136607eaf62a1c4b2 Mon Sep 17 00:00:00 2001
From: Steven Allen <steven@stebalien.com>
Date: Thu, 5 Sep 2019 17:13:30 -0700
Subject: [PATCH] fix: close peerstore on stop

fixes #6627
---
 core/node/groups.go           |  4 ++--
 core/node/libp2p/peerstore.go | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)
 create mode 100644 core/node/libp2p/peerstore.go

diff --git a/core/node/groups.go b/core/node/groups.go
index ab50b3c0a39a..75607edb72ab 100644
--- a/core/node/groups.go
+++ b/core/node/groups.go
@@ -161,7 +161,7 @@ func Identity(cfg *config.Config) fx.Option {
 	if cfg.Identity.PrivKey == "" {
 		return fx.Options( // No PK (usually in tests)
 			fx.Provide(PeerID(id)),
-			fx.Provide(pstoremem.NewPeerstore),
+			fx.Provide(libp2p.Peerstore),
 		)
 	}
 
@@ -173,7 +173,7 @@ func Identity(cfg *config.Config) fx.Option {
 	return fx.Options( // Full identity
 		fx.Provide(PeerID(id)),
 		fx.Provide(PrivateKey(sk)),
-		fx.Provide(pstoremem.NewPeerstore),
+		fx.Provide(libp2p.Peerstore),
 
 		fx.Invoke(libp2p.PstoreAddSelfKeys),
 	)
diff --git a/core/node/libp2p/peerstore.go b/core/node/libp2p/peerstore.go
new file mode 100644
index 000000000000..03ad64a6c8a3
--- /dev/null
+++ b/core/node/libp2p/peerstore.go
@@ -0,0 +1,20 @@
+package libp2p
+
+import (
+	"context"
+
+	"github.com/libp2p/go-libp2p-core/peerstore"
+	"github.com/libp2p/go-libp2p-peerstore/pstoremem"
+	"go.uber.org/fx"
+)
+
+func Peerstore(lc fx.Lifecycle) peerstore.Peerstore {
+	pstore := pstoremem.NewPeerstore()
+	lc.Append(fx.Hook{
+		OnStop: func(ctx context.Context) error {
+			return pstore.Close()
+		},
+	})
+
+	return pstore
+}