From b1750843008b7928c72699c592776fb56c66ec26 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Fri, 16 Feb 2018 00:57:49 +0100
Subject: Log the warn/error messages coming from libpq in a correct format

---
 src/database/postgresql_engine.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/database/postgresql_engine.cpp b/src/database/postgresql_engine.cpp
index 518c23a..59bc885 100644
--- a/src/database/postgresql_engine.cpp
+++ b/src/database/postgresql_engine.cpp
@@ -11,6 +11,8 @@
 
 #include <logger/logger.hpp>
 
+#include <cstring>
+
 PostgresqlEngine::PostgresqlEngine(PGconn*const conn):
     conn(conn)
 {}
@@ -20,6 +22,15 @@ PostgresqlEngine::~PostgresqlEngine()
   PQfinish(this->conn);
 }
 
+static void logging_notice_processor(void*, const char* original)
+{
+  if (original && std::strlen(original) > 0)
+    {
+      std::string message{original, std::strlen(original) - 1};
+      log_warning("PostgreSQL: ", message);
+    }
+}
+
 std::unique_ptr<DatabaseEngine> PostgresqlEngine::open(const std::string& conninfo)
 {
   PGconn* con = PQconnectdb(conninfo.data());
@@ -37,6 +48,7 @@ std::unique_ptr<DatabaseEngine> PostgresqlEngine::open(const std::string& connin
       PQfinish(con);
       throw std::runtime_error("failed to open connection.");
     }
+  PQsetNoticeProcessor(con, &logging_notice_processor, nullptr);
   return std::make_unique<PostgresqlEngine>(con);
 }
 
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