rpc: speedup get_outs.bin

contrib/epee/include/span.h

@@ -109,6 +109,8 @@ namespace epee
     constexpr std::size_t size() const noexcept { return len; }
     constexpr std::size_t size_bytes() const noexcept { return size() * sizeof(value_type); }
 
+    const T &operator[](size_t idx) const { return ptr[idx]; }
+
   private:
     T* ptr;
     std::size_t len;

src/blockchain_db/blockchain_db.h

@@ -1307,11 +1307,11 @@ public:
    * get_output_data(const uint64_t& amount, const uint64_t& index)
    * but for a list of outputs rather than just one.
    *
-   * @param amount an output amount
+   * @param amounts an output amount, or as many as offsets
    * @param offsets a list of amount-specific output indices
    * @param outputs return-by-reference a list of outputs' metadata
    */
-  virtual void get_output_key(const uint64_t &amount, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs, bool allow_partial = false) = 0;
+  virtual void get_output_key(const epee::span<const uint64_t> &amounts, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs, bool allow_partial = false) = 0;
   
   /*
    * FIXME: Need to check with git blame and ask what this does to

src/blockchain_db/lmdb/db_lmdb.cpp

@@ -3197,8 +3197,11 @@ void BlockchainLMDB::get_output_tx_and_index_from_global(const std::vector<uint6
   TXN_POSTFIX_RDONLY();
 }
 
-void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs, bool allow_partial)
+void BlockchainLMDB::get_output_key(const epee::span<const uint64_t> &amounts, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs, bool allow_partial)
 {
+  if (amounts.size() != 1 && amounts.size() != offsets.size())
+    throw0(DB_ERROR("Invalid sizes of amounts and offets"));
+
   LOG_PRINT_L3("BlockchainLMDB::" << __func__);
   TIME_MEASURE_START(db3);
   check_open();
@@ -3209,10 +3212,11 @@ void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector<ui
 
   RCURSOR(output_amounts);
 
-  MDB_val_set(k, amount);
+  for (size_t i = 0; i < offsets.size(); ++i)
-  for (const uint64_t &index : offsets)
   {
-    MDB_val_set(v, index);
+    const uint64_t amount = amounts.size() == 1 ? amounts[0] : amounts[i];
+    MDB_val_set(k, amount);
+    MDB_val_set(v, offsets[i]);
 
     auto get_result = mdb_cursor_get(m_cur_output_amounts, &k, &v, MDB_GET_BOTH);
     if (get_result == MDB_NOTFOUND)
@@ -3222,7 +3226,7 @@ void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector<ui
         MDEBUG("Partial result: " << outputs.size() << "/" << offsets.size());
         break;
       }
-      throw1(OUTPUT_DNE((std::string("Attempting to get output pubkey by global index (amount ") + boost::lexical_cast<std::string>(amount) + ", index " + boost::lexical_cast<std::string>(index) + ", count " + boost::lexical_cast<std::string>(get_num_outputs(amount)) + "), but key does not exist (current height " + boost::lexical_cast<std::string>(height()) + ")").c_str()));
+      throw1(OUTPUT_DNE((std::string("Attempting to get output pubkey by global index (amount ") + boost::lexical_cast<std::string>(amount) + ", index " + boost::lexical_cast<std::string>(offsets[i]) + ", count " + boost::lexical_cast<std::string>(get_num_outputs(amount)) + "), but key does not exist (current height " + boost::lexical_cast<std::string>(height()) + ")").c_str()));
     }
     else if (get_result)
       throw0(DB_ERROR(lmdb_error("Error attempting to retrieve an output pubkey from the db", get_result).c_str()));

src/blockchain_db/lmdb/db_lmdb.h

@@ -243,7 +243,7 @@ public:
   virtual uint64_t get_num_outputs(const uint64_t& amount) const;
 
   virtual output_data_t get_output_key(const uint64_t& amount, const uint64_t& index);
-  virtual void get_output_key(const uint64_t &amount, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs, bool allow_partial = false);
+  virtual void get_output_key(const epee::span<const uint64_t> &amounts, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs, bool allow_partial = false);
 
   virtual tx_out_index get_output_tx_and_index_from_global(const uint64_t& index) const;
   virtual void get_output_tx_and_index_from_global(const std::vector<uint64_t> &global_indices,

src/cryptonote_core/blockchain.cpp

@@ -229,7 +229,7 @@ bool Blockchain::scan_outputkeys_for_indexes(size_t tx_version, const txin_to_ke
   {
     try
     {
-      m_db->get_output_key(tx_in_to_key.amount, absolute_offsets, outputs, true);
+      m_db->get_output_key(epee::span<const uint64_t>(&tx_in_to_key.amount, 1), absolute_offsets, outputs, true);
       if (absolute_offsets.size() != outputs.size())
       {
         MERROR_VER("Output does not exist! amount = " << tx_in_to_key.amount);
@@ -255,7 +255,7 @@ bool Blockchain::scan_outputkeys_for_indexes(size_t tx_version, const txin_to_ke
         add_offsets.push_back(absolute_offsets[i]);
       try
       {
-        m_db->get_output_key(tx_in_to_key.amount, add_offsets, add_outputs, true);
+        m_db->get_output_key(epee::span<const uint64_t>(&tx_in_to_key.amount, 1), add_offsets, add_outputs, true);
         if (add_offsets.size() != add_outputs.size())
         {
           MERROR_VER("Output does not exist! amount = " << tx_in_to_key.amount);
@@ -1767,16 +1767,34 @@ bool Blockchain::get_outs(const COMMAND_RPC_GET_OUTPUTS_BIN::request& req, COMMA
 
   res.outs.clear();
   res.outs.reserve(req.outputs.size());
+
+  std::vector<cryptonote::output_data_t> data;
   try
   {
+    std::vector<uint64_t> amounts, offsets;
+    amounts.reserve(req.outputs.size());
+    offsets.reserve(req.outputs.size());
     for (const auto &i: req.outputs)
     {
-      // get tx_hash, tx_out_index from DB
+      amounts.push_back(i.amount);
-      const output_data_t od = m_db->get_output_key(i.amount, i.index);
+      offsets.push_back(i.index);
-      tx_out_index toi = m_db->get_output_tx_and_index(i.amount, i.index);
+    }
-      bool unlocked = is_tx_spendtime_unlocked(m_db->get_tx_unlock_time(toi.first));
+    m_db->get_output_key(epee::span<const uint64_t>(amounts.data(), amounts.size()), offsets, data);
+    if (data.size() != req.outputs.size())
+    {
+      MERROR("Unexpected output data size: expected " << req.outputs.size() << ", got " << data.size());
+      return false;
+    }
+    for (const auto &t: data)
+      res.outs.push_back({t.pubkey, t.commitment, is_tx_spendtime_unlocked(t.unlock_time), t.height, crypto::null_hash});
 
-      res.outs.push_back({od.pubkey, od.commitment, unlocked, od.height, toi.first});
+    if (req.get_txid)
+    {
+      for (size_t i = 0; i < req.outputs.size(); ++i)
+      {
+        tx_out_index toi = m_db->get_output_tx_and_index(req.outputs[i].amount, req.outputs[i].index);
+        res.outs[i].txid = toi.first;
+      }
     }
   }
   catch (const std::exception &e)
@@ -3795,7 +3813,7 @@ void Blockchain::output_scan_worker(const uint64_t amount, const std::vector<uin
 {
   try
   {
-    m_db->get_output_key(amount, offsets, outputs, true);
+    m_db->get_output_key(epee::span<const uint64_t>(&amount, 1), offsets, outputs, true);
   }
   catch (const std::exception& e)
   {

src/rpc/core_rpc_server_commands_defs.h

@@ -50,7 +50,7 @@ namespace cryptonote
 // advance which version they will stop working with
 // Don't go over 32767 for any of these
 #define CORE_RPC_VERSION_MAJOR 2
-#define CORE_RPC_VERSION_MINOR 1
+#define CORE_RPC_VERSION_MINOR 2
 #define MAKE_CORE_RPC_VERSION(major,minor) (((major)<<16)|(minor))
 #define CORE_RPC_VERSION MAKE_CORE_RPC_VERSION(CORE_RPC_VERSION_MAJOR, CORE_RPC_VERSION_MINOR)
 
@@ -697,9 +697,11 @@ namespace cryptonote
     struct request
     {
       std::vector<get_outputs_out> outputs;
+      bool get_txid;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE(outputs)
+        KV_SERIALIZE_OPT(get_txid, true)
       END_KV_SERIALIZE_MAP()
     };
 

src/wallet/wallet2.cpp

@@ -7185,6 +7185,7 @@ void wallet2::get_outs(std::vector<std::vector<tools::wallet2::get_outs_entry>>
     }
 
     // get the keys for those
+    req.get_txid = false;
     m_daemon_rpc_mutex.lock();
     bool r = epee::net_utils::invoke_http_bin("/get_outs.bin", req, daemon_resp, m_http_client, rpc_timeout);
     m_daemon_rpc_mutex.unlock();

tests/unit_tests/testdb.h

@@ -93,7 +93,7 @@ public:
   virtual cryptonote::tx_out_index get_output_tx_and_index_from_global(const uint64_t& index) const { return cryptonote::tx_out_index(); }
   virtual cryptonote::tx_out_index get_output_tx_and_index(const uint64_t& amount, const uint64_t& index) const { return cryptonote::tx_out_index(); }
   virtual void get_output_tx_and_index(const uint64_t& amount, const std::vector<uint64_t> &offsets, std::vector<cryptonote::tx_out_index> &indices) const {}
-  virtual void get_output_key(const uint64_t &amount, const std::vector<uint64_t> &offsets, std::vector<cryptonote::output_data_t> &outputs, bool allow_partial = false) {}
+  virtual void get_output_key(const epee::span<const uint64_t> &amounts, const std::vector<uint64_t> &offsets, std::vector<cryptonote::output_data_t> &outputs, bool allow_partial = false) {}
   virtual bool can_thread_bulk_indices() const { return false; }
   virtual std::vector<uint64_t> get_tx_output_indices(const crypto::hash& h) const { return std::vector<uint64_t>(); }
   virtual std::vector<uint64_t> get_tx_amount_output_indices(const uint64_t tx_index) const { return std::vector<uint64_t>(); }