~singpolyma/biboumi

d7427fc9ca4c06fda458e4951559f57163d90b94 — louiz’ 4 years ago 8f74d4d
Re-connect to postgresql when the connection is lost

fix #3336
2 files changed, 15 insertions(+), 2 deletions(-)

M CHANGELOG.rst
M src/database/postgresql_statement.hpp
M CHANGELOG.rst => CHANGELOG.rst +3 -0
@@ 8,6 8,9 @@ Version 8.0
  the user customize the address to use when connecting to a server.
  See https://lab.louiz.org/louiz/biboumi/issues/3273 for more details.
- Messages id are properly reflected to the sender
- We now properly deal with a PostgreSQL server restart: whenever the
  connection is lost with the server, we try to reconnect and re-execute the
  query once.

Version 7.2 - 2018-01-24
========================

M src/database/postgresql_statement.hpp => src/database/postgresql_statement.hpp +12 -2
@@ 92,7 92,7 @@ class PostgresqlStatement: public Statement
 private:

private:
  bool execute()
  bool execute(const bool second_attempt=false)
  {
    std::vector<const char*> params;
    params.reserve(this->params.size());


@@ 113,7 113,17 @@ private:
        const char* original = PQerrorMessage(this->conn);
        if (original && std::strlen(original) > 0)
          log_error("Failed to execute command: ", std::string{original, std::strlen(original) - 1});
        return false;
        if (PQstatus(this->conn) != CONNECTION_OK && !second_attempt)
          {
            log_info("Trying to reconnect to PostgreSQL server and execute the query again.");
            PQreset(this->conn);
            return this->execute(true);
          }
        else
          {
            log_error("Givin up.");
            return false;
          }
      }
    return true;
  }