From 6cd67322257e36aa464ec57e402ba9140af93021 Mon Sep 17 00:00:00 2001
From: frrist <forrest@protocol.ai>
Date: Wed, 13 Oct 2021 15:24:28 -0700
Subject: [PATCH] fix: support node instantiation in external packages

- implement ChainGetPath on ChainModuleAPI
---
 node/builder.go         | 7 +++++++
 node/impl/full/chain.go | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/node/builder.go b/node/builder.go
index 6c42aad2d22..3f2e5950331 100644
--- a/node/builder.go
+++ b/node/builder.go
@@ -374,6 +374,13 @@ func WithRepoType(repoType repo.RepoType) func(s *Settings) error {
 	}
 }
 
+func WithEnableLibp2pNode(enable bool) func(s *Settings) error {
+	return func(s *Settings) error {
+		s.enableLibp2pNode = enable
+		return nil
+	}
+}
+
 func WithInvokesKey(i invoke, resApi interface{}) func(s *Settings) error {
 	return func(s *Settings) error {
 		s.invokes[i] = fx.Populate(resApi)
diff --git a/node/impl/full/chain.go b/node/impl/full/chain.go
index e8d4033372d..4ffbe0e6376 100644
--- a/node/impl/full/chain.go
+++ b/node/impl/full/chain.go
@@ -51,6 +51,7 @@ type ChainModuleAPI interface {
 	ChainGetTipSetByHeight(ctx context.Context, h abi.ChainEpoch, tsk types.TipSetKey) (*types.TipSet, error)
 	ChainGetTipSetAfterHeight(ctx context.Context, h abi.ChainEpoch, tsk types.TipSetKey) (*types.TipSet, error)
 	ChainReadObj(context.Context, cid.Cid) ([]byte, error)
+	ChainGetPath(ctx context.Context, from, to types.TipSetKey) ([]*api.HeadChange, error)
 }
 
 var _ ChainModuleAPI = *new(api.FullNode)
@@ -105,6 +106,10 @@ func (m *ChainModule) ChainGetTipSet(ctx context.Context, key types.TipSetKey) (
 	return m.Chain.LoadTipSet(key)
 }
 
+func (m *ChainModule) ChainGetPath(ctx context.Context, from, to types.TipSetKey) ([]*api.HeadChange, error) {
+	return m.Chain.GetPath(ctx, from, to)
+}
+
 func (m *ChainModule) ChainGetBlockMessages(ctx context.Context, msg cid.Cid) (*api.BlockMessages, error) {
 	b, err := m.Chain.GetBlock(msg)
 	if err != nil {