diff --git a/Trigger/TrigConfiguration/TrigConfData/TrigConfData/HLTChain.h b/Trigger/TrigConfiguration/TrigConfData/TrigConfData/HLTChain.h
index c0755dda26977142d5039171db0747cffa54edd4..dab6cb7e63b5bebe497ef4b93e315a6b4840c449 100644
--- a/Trigger/TrigConfiguration/TrigConfData/TrigConfData/HLTChain.h
+++ b/Trigger/TrigConfiguration/TrigConfData/TrigConfData/HLTChain.h
@@ -55,6 +55,9 @@ namespace TrigConf {
/** Accessor to the groups this chain belongs to */
std::vector<std::string> groups() const;
+ /** Accessor to the sequencers this chain belongs to */
+ std::vector<std::string> sequencers() const;
+
private:
void update() override;
diff --git a/Trigger/TrigConfiguration/TrigConfData/TrigConfData/HLTMenu.h b/Trigger/TrigConfiguration/TrigConfData/TrigConfData/HLTMenu.h
index ec445700604467987e1761a969b8a29d916c70b9..da6df560576191319825e5731793528750d41225 100644
--- a/Trigger/TrigConfiguration/TrigConfData/TrigConfData/HLTMenu.h
+++ b/Trigger/TrigConfiguration/TrigConfData/TrigConfData/HLTMenu.h
@@ -9,6 +9,8 @@
#include "TrigConfData/DataStructure.h"
#include "TrigConfData/HLTChain.h"
+#include <map>
+
namespace TrigConf {
/**
@@ -57,6 +59,9 @@ namespace TrigConf {
/** Accessor to the connected output streams */
std::vector<DataStructure> streams() const;
+ /** Accessor to the sequencers */
+ std::map<std::string, std::vector<std::string>> sequencers() const;
+
/** print overview of L1 Menu */
void printMenu(bool full = false) const;
diff --git a/Trigger/TrigConfiguration/TrigConfData/src/HLTChain.cxx b/Trigger/TrigConfiguration/TrigConfData/src/HLTChain.cxx
index bfeeab95645159a03d7403900149dc4035367bcb..a78b2a391a066bc2c69b090f778dc8e3ce6926fb 100644
--- a/Trigger/TrigConfiguration/TrigConfData/src/HLTChain.cxx
+++ b/Trigger/TrigConfiguration/TrigConfData/src/HLTChain.cxx
@@ -101,3 +101,18 @@ TrigConf::Chain::groups() const
return grouplist;
}
+std::vector<std::string>
+TrigConf::Chain::sequencers() const
+{
+
+ std::vector<std::string> seqlist;
+ const auto & seqs = getList("sequencers");
+ if( !seqs.empty() ) {
+ seqlist.reserve(seqs.size());
+ for( auto & seq : seqs ) {
+ seqlist.emplace_back( seq.getValue<std::string>() );
+ }
+ }
+ return seqlist;
+}
+
diff --git a/Trigger/TrigConfiguration/TrigConfData/src/HLTMenu.cxx b/Trigger/TrigConfiguration/TrigConfData/src/HLTMenu.cxx
index f75ab64a14ed37c14f13185b42b68294b05ce691..37017087237557655c42c30b05464623ecfe49b0 100644
--- a/Trigger/TrigConfiguration/TrigConfData/src/HLTMenu.cxx
+++ b/Trigger/TrigConfiguration/TrigConfData/src/HLTMenu.cxx
@@ -74,6 +74,22 @@ TrigConf::HLTMenu::streams() const
}
+std::map<std::string, std::vector<std::string>>
+TrigConf::HLTMenu::sequencers() const
+{
+ std::map<std::string, std::vector<std::string>> result;
+ const auto & sequencers = getObject("sequencers");
+
+ for( auto & sequence : sequencers.getKeys() ) {
+ for( auto & alg : sequencers.getList(sequence) ) {
+ result[sequence].emplace_back(alg.getValue<std::string>());
+ }
+ }
+
+ return result;
+}
+
+
void
TrigConf::HLTMenu::printMenu(bool full) const
{
diff --git a/Trigger/TrigConfiguration/TrigConfigSvc/src/AlgToChainTool.cxx b/Trigger/TrigConfiguration/TrigConfigSvc/src/AlgToChainTool.cxx
new file mode 100644
index 0000000000000000000000000000000000000000..cb9c3b9eb2723572cdc6e3625c920a3c4f482290
--- /dev/null
+++ b/Trigger/TrigConfiguration/TrigConfigSvc/src/AlgToChainTool.cxx
@@ -0,0 +1,59 @@
+/*
+ Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
+*/
+
+#include "AlgToChainTool.h"
+
+TrigConf::AlgToChainTool::AlgToChainTool(const std::string& type,
+ const std::string& name,
+ const IInterface* parent)
+ : AthAlgTool (type, name, parent)
+ {}
+
+
+TrigConf::AlgToChainTool::~AlgToChainTool() {}
+
+
+StatusCode TrigConf::AlgToChainTool::initialize() {
+ ATH_CHECK( m_HLTMenuKey.initialize() );
+
+ return StatusCode::SUCCESS;
+}
+
+
+StatusCode TrigConf::AlgToChainTool::start() {
+ SG::ReadHandle<TrigConf::HLTMenu> hltMenuHandle = SG::makeHandle( m_HLTMenuKey );
+ ATH_CHECK( hltMenuHandle.isValid() );
+
+ // fill the maps
+ for ( const TrigConf::Chain& chain : *hltMenuHandle ) {
+ for ( const std::string& sequencer : chain.sequencers() ) {
+ m_sequencerToChainMap[sequencer].push_back(chain.name());
+ }
+ }
+
+ for ( const auto& sequencer : hltMenuHandle->sequencers() ) {
+ for ( const std::string& algorithm : sequencer.second ) {
+ // save just second part of algorithm ex. RoRSeqFilter/FFastCaloElectron -> FFastCaloElectron
+ m_algToSequencersMap[algorithm.substr(algorithm.find('/') + 1)]
+ .push_back(sequencer.first);
+ }
+ }
+
+ return StatusCode::SUCCESS;
+}
+
+
+std::set<std::string> TrigConf::AlgToChainTool::getChainsForAlg(const std::string& algorithmName) const {
+ std::set<std::string> result;
+
+ try {
+ for ( const std::string& sequencer : m_algToSequencersMap.at(algorithmName) ) {
+ result.insert(m_sequencerToChainMap.at(sequencer).begin(), m_sequencerToChainMap.at(sequencer).end());
+ }
+ } catch ( const std::out_of_range & ex ) {
+ ATH_MSG_ERROR ( algorithmName << " is not part of the menu!" );
+ }
+
+ return result;
+}
\ No newline at end of file
diff --git a/Trigger/TrigConfiguration/TrigConfigSvc/src/AlgToChainTool.h b/Trigger/TrigConfiguration/TrigConfigSvc/src/AlgToChainTool.h
new file mode 100644
index 0000000000000000000000000000000000000000..de01f55feb692b780fa3eb94708da9541b6a8545
--- /dev/null
+++ b/Trigger/TrigConfiguration/TrigConfigSvc/src/AlgToChainTool.h
@@ -0,0 +1,42 @@
+/*
+ Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
+*/
+
+#ifndef TRIGCONFDATA_ALGTOCHAINTOOL_H
+#define TRIGCONFDATA_ALGTOCHAINTOOL_H
+
+#include <string>
+#include <set>
+#include <vector>
+#include <map>
+
+#include "AthenaBaseComps/AthAlgTool.h"
+#include "TrigConfData/HLTMenu.h"
+
+
+namespace TrigConf {
+
+ /** @class AlgToChainTool
+ * @brief Provide the reverse mapping: algorithms to set fo chain names
+ **/
+
+ class AlgToChainTool : public AthAlgTool {
+ public:
+ AlgToChainTool(const std::string& type, const std::string& name, const IInterface* parent);
+ virtual ~AlgToChainTool();
+
+ virtual StatusCode initialize() override;
+
+ virtual StatusCode start() override;
+
+ /// Request set of chains for given algorithm
+ std::set<std::string> getChainsForAlg(const std::string& algorithmName) const;
+
+ private:
+ SG::ReadHandleKey<TrigConf::HLTMenu> m_HLTMenuKey{ this, "HLTTriggerMenu", "DetectorStore+HLTTriggerMenu", "HLT Menu" };
+ std::map<std::string, std::vector<std::string>> m_sequencerToChainMap;
+ std::map<std::string, std::vector<std::string>> m_algToSequencersMap;
+ };
+}
+
+#endif // TRIGCONFDATA_ALGTOCHAINTOOL_H
diff --git a/Trigger/TrigConfiguration/TrigConfigSvc/src/components/TrigConfigSvc_entries.cxx b/Trigger/TrigConfiguration/TrigConfigSvc/src/components/TrigConfigSvc_entries.cxx
index 2368747300749d53e804db7cf6d6eec9f25773e8..ddf9a25ec9075d6737489ec1e3376d0bf2b223f8 100644
--- a/Trigger/TrigConfiguration/TrigConfigSvc/src/components/TrigConfigSvc_entries.cxx
+++ b/Trigger/TrigConfiguration/TrigConfigSvc/src/components/TrigConfigSvc_entries.cxx
@@ -7,6 +7,8 @@
#include "../HLTPrescaleCondAlg.h"
+#include "../AlgToChainTool.h"
+
DECLARE_COMPONENT( TrigConf::L1TopoConfigSvc )
DECLARE_COMPONENT( TrigConf::LVL1ConfigSvc )
DECLARE_COMPONENT( TrigConf::HLTConfigSvc )
@@ -15,3 +17,5 @@ DECLARE_COMPONENT( TrigConf::DSConfigSvc )
DECLARE_COMPONENT( TrigConf::TrigConfigSvc )
DECLARE_COMPONENT( TrigConf::HLTPrescaleCondAlg )
+
+DECLARE_COMPONENT( TrigConf::AlgToChainTool )
\ No newline at end of file