adds custom formatter for OMQ structs that have to_string member

CMakeLists.txt

@@ -212,6 +212,7 @@ if(OXENMQ_INSTALL)
         oxenmq/bt_serialize.h
         oxenmq/bt_value.h
         oxenmq/connections.h
+        oxenmq/fmt.h
         oxenmq/hex.h
         oxenmq/oxenmq.h
         oxenmq/message.h

oxenmq/auth.h

@@ -51,5 +51,23 @@ struct already_hashed {
 /// pubkeys and a terrible hash choice for anything else).
 using pubkey_set = std::unordered_set<std::string, already_hashed>;
 
+inline constexpr std::string_view to_string(AuthLevel a) {
+    switch (a) {
+        case AuthLevel::denied: return "denied";
+        case AuthLevel::none:   return "none";
+        case AuthLevel::basic:  return "basic";
+        case AuthLevel::admin:  return "admin";
+        default:                return "(unknown)";
+    }
+}
+
+inline AuthLevel auth_from_string(std::string_view a) {
+    if (a == "none") return AuthLevel::none;
+    if (a == "basic") return AuthLevel::basic;
+    if (a == "admin") return AuthLevel::admin;
+    return AuthLevel::denied;
+}
+
+
 
 }

oxenmq/connections.cpp

@@ -5,10 +5,7 @@
 namespace oxenmq {
 
 std::ostream& operator<<(std::ostream& o, const ConnectionID& conn) {
-    if (!conn.pk.empty())
-        return o << (conn.sn() ? "SN " : "non-SN authenticated remote ") << oxenc::to_hex(conn.pk);
-    else
-        return o << "unauthenticated remote [" << conn.id << "]";
+    return o << conn.to_string();
 }
 
 namespace {
@@ -381,7 +378,12 @@ void OxenMQ::proxy_disconnect(ConnectionID conn, std::chrono::milliseconds linge
     OMQ_LOG(warn, "Failed to disconnect ", conn, ": no such outgoing connection");
 }
 
-
+std::string ConnectionID::to_string() const {
+    if (!pk.empty())
+        return (sn() ? std::string("SN ") : std::string("non-SN authenticated remote ")) + oxenc::to_hex(pk);
+    else
+        return std::string("unauthenticated remote [") + std::to_string(id) + "]";
+}
 
 
 }

oxenmq/connections.h

@@ -68,6 +68,9 @@ struct ConnectionID {
     // Returns a copy of the ConnectionID with the route set to empty.
     ConnectionID unrouted() { return ConnectionID{id, pk, ""}; }
 
+    std::string to_string() const;
+
+
 private:
     ConnectionID(int64_t id) : id{id} {}
     ConnectionID(int64_t id, std::string pubkey, std::string route = "")
@@ -93,4 +96,3 @@ namespace std {
         }
     };
 } // namespace std
-

oxenmq/fmt.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <fmt/format.h>
+#include "connections.h"
+#include "auth.h"
+#include "address.h"
+
+template <>
+struct fmt::formatter<oxenmq::AuthLevel> : fmt::formatter<std::string> {
+  auto format(oxenmq::AuthLevel v, format_context& ctx) {
+    return formatter<std::string>::format(
+        fmt::format("{}", to_string(v)), ctx);
+  }
+};
+template <>
+struct fmt::formatter<oxenmq::ConnectionID> : fmt::formatter<std::string> {
+  auto format(oxenmq::ConnectionID conn, format_context& ctx) {
+    return formatter<std::string>::format(
+        fmt::format("{}", conn.to_string()), ctx);
+  }
+};
+template <>
+struct fmt::formatter<oxenmq::address> : fmt::formatter<std::string> {
+  auto format(oxenmq::address addr, format_context& ctx) {
+    return formatter<std::string>::format(
+        fmt::format("{}", addr.full_address()), ctx);
+  }
+};

oxenmq/oxenmq-internal.h

@@ -112,23 +112,6 @@ inline std::string_view view(const zmq::message_t& m) {
     return {m.data<char>(), m.size()};
 }
 
-inline std::string to_string(AuthLevel a) {
-    switch (a) {
-        case AuthLevel::denied: return "denied";
-        case AuthLevel::none:   return "none";
-        case AuthLevel::basic:  return "basic";
-        case AuthLevel::admin:  return "admin";
-        default:                return "(unknown)";
-    }
-}
-
-inline AuthLevel auth_from_string(std::string_view a) {
-    if (a == "none") return AuthLevel::none;
-    if (a == "basic") return AuthLevel::basic;
-    if (a == "admin") return AuthLevel::admin;
-    return AuthLevel::denied;
-}
-
 // Extracts and builds the "send" part of a message for proxy_send/proxy_reply
 inline std::list<zmq::message_t> build_send_parts(oxenc::bt_list_consumer send, std::string_view route) {
     std::list<zmq::message_t> parts;