Merge pull request #130 from moneroexamples/tx_full_details_json_call

Adding detailedtransaction json api call

CMakeLists.txt

@@ -6,9 +6,7 @@ set(PROJECT_NAME
 
 project(${PROJECT_NAME})
 
-set(CMAKE_CXX_FLAGS
+set(CMAKE_CXX_STANDARD 14)
-        "${CMAKE_CXX_FLAGS} -std=c++14")
-
 
 if (WIN32)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wa,-mbig-obj -O3")

main.cpp

@@ -603,6 +603,14 @@ main(int ac, const char* av[])
             return r;
         });
 
+        CROW_ROUTE(app, "/api/detailedtransaction/<string>")
+        ([&](const crow::request &req, string tx_hash) {
+
+            myxmr::jsonresponse r{xmrblocks.json_detailedtransaction(remove_bad_chars(tx_hash))};
+
+            return r;
+        });
+
         CROW_ROUTE(app, "/api/block/<string>")
         ([&](const crow::request &req, string block_no_or_hash) {
 

src/page.h

@@ -30,6 +30,7 @@
 #include <limits>
 #include <ctime>
 #include <future>
+#include <visitor/render_node.hpp>
 
 
 #define TMPL_DIR                    "./templates"
@@ -66,7 +67,7 @@
 #define JS_SHA3     TMPL_DIR "/js/sha3.js"
 
 #define ONIONEXPLORER_RPC_VERSION_MAJOR 1
-#define ONIONEXPLORER_RPC_VERSION_MINOR 0
+#define ONIONEXPLORER_RPC_VERSION_MINOR 1
 #define MAKE_ONIONEXPLORER_RPC_VERSION(major,minor) (((major)<<16)|(minor))
 #define ONIONEXPLORER_RPC_VERSION \
     MAKE_ONIONEXPLORER_RPC_VERSION(ONIONEXPLORER_RPC_VERSION_MAJOR, ONIONEXPLORER_RPC_VERSION_MINOR)
@@ -113,6 +114,70 @@ namespace std
 }
 
 
+
+/**
+ * visitor to produce json representations of
+ * values stored in mstch::node
+ */
+class mstch_node_to_json: public boost::static_visitor<nlohmann::json> {
+public:
+
+
+    // enabled for numeric types
+    template<typename T>
+    std::enable_if_t<std::is_arithmetic<T>::value, nlohmann::json>
+    operator()(T const& value) const {
+        return nlohmann::json {value};
+    }
+
+    nlohmann::json operator()(std::string const& value) const {
+        return nlohmann::json {value};
+    }
+
+    nlohmann::json operator()(mstch::map const& n_map) const
+    {
+        nlohmann::json j;
+
+        for (auto const& kv: n_map)
+            j[kv.first] = boost::apply_visitor(mstch_node_to_json(), kv.second);
+
+        return j;
+    }
+
+    nlohmann::json operator()(mstch::array const& n_array) const
+    {
+        nlohmann::json j;
+
+        for (auto const& v:  n_array)
+            j.push_back(boost::apply_visitor(mstch_node_to_json(), v));
+
+        return j;
+
+    }
+
+    // catch other types that are non-numeric and not listed above
+    template<typename T>
+    std::enable_if_t<!std::is_arithmetic<T>::value, nlohmann::json>
+    operator()(const T&) const {
+        return nlohmann::json {};
+    }
+
+};
+
+namespace mstch
+{
+namespace internal
+{
+    // add conversion from mstch::map to nlohmann::json
+    void
+    to_json(nlohmann::json& j, mstch::map const &m)
+    {
+        for (auto const& kv: m)
+            j[kv.first] = boost::apply_visitor(mstch_node_to_json(), kv.second);
+    }
+}
+}
+
 namespace xmreg
 {
 
@@ -124,6 +189,8 @@ using namespace std;
 using epee::string_tools::pod_to_hex;
 using epee::string_tools::hex_to_pod;
 
+
+
 /**
 * @brief The tx_details struct
 *
@@ -2663,7 +2730,7 @@ public:
                                                      "Its prefix is: {:s}",
                                              data_prefix);
 
-                    cout << msg << endl;
+                    cerr << msg << endl;
 
                     return string(msg);
                 }
@@ -2672,6 +2739,11 @@ public:
                 crypto::hash tx_prefix_hash_from_blob;
                 cryptonote::transaction tx_from_blob;
 
+//                std::stringstream ss;
+//                ss << tx_data_blob;
+//                binary_archive<false> ba(ss);
+//                serialization::serialize(ba, tx_from_blob);
+
                 if (!cryptonote::parse_and_validate_tx_from_blob(tx_data_blob,
                                                                  tx_from_blob,
                                                                  tx_hash_from_blob,
@@ -3971,6 +4043,8 @@ public:
     }
 
 
+
+
     /*
      * Lets use this json api convention for success and error
      * https://labs.omniti.com/labs/jsend
@@ -4220,6 +4294,56 @@ public:
         return j_response;
     }
 
+
+    json
+    json_detailedtransaction(string tx_hash_str)
+    {
+        json j_response {
+                {"status", "fail"},
+                {"data"  , json {}}
+        };
+
+        json& j_data = j_response["data"];
+
+        transaction tx;
+
+        bool found_in_mempool {false};
+        uint64_t tx_timestamp {0};
+        string error_message;
+
+        if (!find_tx_for_json(tx_hash_str, tx, found_in_mempool, tx_timestamp, error_message))
+        {
+            j_data["title"] = error_message;
+            return j_response;
+        }
+
+        // get detailed tx information
+        mstch::map tx_context = construct_tx_context(tx, 1 /*full detailed */);
+
+        // remove some page specific and html stuff
+        tx_context.erase("timescales");
+        tx_context.erase("tx_json");
+        tx_context.erase("tx_json_raw");
+        tx_context.erase("enable_mixins_details");
+        tx_context.erase("with_ring_signatures");
+        tx_context.erase("show_part_of_inputs");
+        tx_context.erase("show_more_details_link");
+        tx_context.erase("max_no_of_inputs_to_show");
+        tx_context.erase("inputs_xmr_sum_not_zero");
+        tx_context.erase("have_raw_tx");
+        tx_context.erase("have_any_unknown_amount");
+        tx_context.erase("has_error");
+        tx_context.erase("error_msg");
+        tx_context.erase("server_time");
+        tx_context.erase("construction_time");
+
+        j_data = tx_context;
+
+        j_response["status"] = "success";
+
+        return j_response;
+    }
+
     /*
      * Lets use this json api convention for success and error
      * https://labs.omniti.com/labs/jsend
@@ -6146,6 +6270,32 @@ private:
     }
 
 
+    bool
+    find_tx_for_json(
+            string const& tx_hash_str,
+            transaction& tx,
+            bool& found_in_mempool,
+            uint64_t& tx_timestamp,
+            string& error_message)
+    {
+        // parse tx hash string to hash object
+        crypto::hash tx_hash;
+
+        if (!xmreg::parse_str_secret_key(tx_hash_str, tx_hash))
+        {
+            error_message = fmt::format("Cant parse tx hash: {:s}", tx_hash_str);
+            return false;
+        }
+
+        if (!find_tx(tx_hash, tx, found_in_mempool, tx_timestamp))
+        {
+            error_message = fmt::format("Cant find tx hash: {:s}", tx_hash_str);
+            return false;
+        }
+
+        return true;
+    }
+
     bool
     search_mempool(crypto::hash tx_hash,
                    vector<MempoolStatus::mempool_tx>& found_txs)

src/tools.h

@@ -370,6 +370,7 @@ calc_median(It it_begin, It it_end)
 void
 pause_execution(uint64_t no_seconds, const string& text = "now");
 
+
 }
 
 #endif //XMREG01_TOOLS_H