From 5187992c943770f5f62cce81b4176bc8bd32c3be Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Sun, 3 Aug 2025 12:03:00 +0200
Subject: [PATCH] Migrate from deprecated notification_receiver to
 connection::listen()

libpqxx 7.10.1 deprecates the notification_receiver class.
---
 src/libhydra/db.hh | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/libhydra/db.hh b/src/libhydra/db.hh
index c664a01d..acdf3b8c 100644
--- a/src/libhydra/db.hh
+++ b/src/libhydra/db.hh
@@ -27,19 +27,20 @@ struct Connection : pqxx::connection
 };
 
 
-class receiver : public pqxx::notification_receiver
+class receiver
 {
     std::optional<std::string> status;
+    pqxx::connection & conn;
 
 public:
 
     receiver(pqxx::connection_base & c, const std::string & channel)
-        : pqxx::notification_receiver(c, channel) { }
-
-    void operator() (const std::string & payload, int pid) override
+        : conn(static_cast<pqxx::connection &>(c))
     {
-        status = payload;
-    };
+        conn.listen(channel, [this](pqxx::notification n) {
+            status = std::string(n.payload);
+        });
+    }
 
     std::optional<std::string> get() {
         auto s = status;