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Fix removal of last server from monitor

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If the last server was removed, the parameter would be rejected due to it
being empty. To remove the parameter, the
MonitorManager::reconfigure_monitor should be used. Also fixed the
unnecessary serialization after a failure to remove server from a monitor
and the fact that some errors were logged instead of written to the caller
of the command.
This commit is contained in:
Markus Mäkelä 2019-03-27 00:33:55 +02:00
parent 5ee9b74770
commit c3f3200d2c
No known key found for this signature in database
GPG Key ID: 72D48FCE664F7B19
1 changed files with 16 additions and 27 deletions
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43
server/core/config_runtime.cc
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@ -198,37 +198,25 @@ bool runtime_remove_server(Monitor* mon, Server* server)
if (MonitorManager::server_is_monitored(server) != mon)
{
MXS_ERROR("Server '%s' is not monitored by '%s'.", server->name(), mon->m_name);
config_runtime_error("Server '%s' is not monitored by '%s'.", server->name(), mon->m_name);
}
else
{
// Construct the new list. The removed value could be anywhere.
string serverlist = mon->parameters.get_string(CN_SERVERS);
auto names = config_break_list_string(serverlist);
bool found = false;
for (auto iter = names.begin(); iter != names.end(); ++iter)
{
if (*iter == server->name())
{
found = true;
names.erase(iter);
break;
}
}
MonitorStop stop(mon);
if (found)
// Construct the new server list
auto params = mon->parameters;
auto names = config_break_list_string(params.get_string(CN_SERVERS));
names.erase(std::remove(names.begin(), names.end(), server->name()));
std::string servers = mxb::join(names, ",");
params.set(CN_SERVERS, servers);
if (MonitorManager::reconfigure_monitor(mon, params))
{
// Rebuild the string.
string new_list;
string separator;
for (auto name : names)
{
new_list += separator + name;
separator = ", ";
}
rval = runtime_alter_monitor(mon, CN_SERVERS, new_list.c_str());
rval = MonitorManager::monitor_serialize(mon);
}
}
return rval;
}
@ -314,9 +302,10 @@ bool runtime_unlink_server(Server* server, const char* target)
}
else if (monitor)
{
runtime_remove_server(monitor, server);
MonitorManager::monitor_serialize(monitor);
rval = true;
if ((rval = runtime_remove_server(monitor, server)))
{
MonitorManager::monitor_serialize(monitor);
}
}
if (rval)