From 0db8feb668b2e1077172d34b55d836b845e3076b Mon Sep 17 00:00:00 2001
From: Christopher Jones <chrisdjones15@gmail.com>
Date: Fri, 17 Sep 2021 15:37:25 -0500
Subject: [PATCH] Added esConsumes to TSGFromL2Muon

---
 RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.cc | 6 +++---
 RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.h  | 2 ++
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.cc b/RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.cc
index 684de272ea147..2fd0c81c68ed5 100644
--- a/RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.cc
+++ b/RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.cc
@@ -42,6 +42,8 @@ TSGFromL2Muon::TSGFromL2Muon(const edm::ParameterSet& cfg) {
   //L2 collection
   theL2CollectionLabel = cfg.getParameter<edm::InputTag>("MuonCollectionLabel");
   l2muonToken = consumes<reco::TrackCollection>(theL2CollectionLabel);
+
+  theTTopoToken = esConsumes();
 }
 
 TSGFromL2Muon::~TSGFromL2Muon() = default;
@@ -59,9 +61,7 @@ void TSGFromL2Muon::produce(edm::Event& ev, const edm::EventSetup& es) {
   auto result = std::make_unique<L3MuonTrajectorySeedCollection>();
 
   //Retrieve tracker topology from geometry
-  edm::ESHandle<TrackerTopology> tTopoHand;
-  es.get<TrackerTopologyRcd>().get(tTopoHand);
-  const TrackerTopology* tTopo = tTopoHand.product();
+  const TrackerTopology* tTopo = &es.getData(theTTopoToken);
 
   //intialize tools
   theService->update(es);
diff --git a/RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.h b/RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.h
index 6544b32737cea..55fb8af6a753c 100644
--- a/RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.h
+++ b/RecoMuon/TrackerSeedGenerator/plugins/TSGFromL2Muon.h
@@ -17,6 +17,7 @@ class MuonServiceProxy;
 class TrackerSeedGenerator;
 class MuonTrackingRegionBuilder;
 class TrackerSeedCleaner;
+class TrackerTopologyRcd;
 
 //
 // Generate tracker seeds from L2 muons
@@ -37,5 +38,6 @@ class TSGFromL2Muon : public edm::stream::EDProducer<> {
   std::unique_ptr<TrackerSeedGenerator> theTkSeedGenerator;
   std::unique_ptr<TrackerSeedCleaner> theSeedCleaner;
   edm::EDGetTokenT<reco::TrackCollection> l2muonToken;
+  edm::ESGetToken<TrackerTopology, TrackerTopologyRcd > theTTopoToken;
 };
 #endif