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feat: add mqtt config model and parser for all Go MQTTOpts fields

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This commit is contained in:
Joseph Doherty
2026-02-23 05:57:28 -05:00
parent 3f48d1c5ee
commit a661e641c6
3 changed files with 200 additions and 0 deletions
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154
src/NATS.Server/Configuration/ConfigProcessor.cs
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@@ -245,6 +245,12 @@ public static class ConfigProcessor
opts.ReconnectErrorReports = ToInt(value);
break;
// MQTT
case "mqtt":
if (value is Dictionary<string, object?> mqttDict)
ParseMqtt(mqttDict, opts, errors);
break;
// Unknown keys silently ignored (cluster, jetstream, gateway, leafnode, etc.)
default:
break;
@@ -620,6 +626,145 @@ public static class ConfigProcessor
opts.Tags = tags;
}
// ─── MQTT parsing ────────────────────────────────────────────────
// Reference: Go server/opts.go parseMQTT (lines ~5443-5541)
private static void ParseMqtt(Dictionary<string, object?> dict, NatsOptions opts, List<string> errors)
{
var mqtt = opts.Mqtt ?? new MqttOptions();
foreach (var (key, value) in dict)
{
switch (key.ToLowerInvariant())
{
case "listen":
var (host, port) = ParseHostPort(value);
if (host is not null) mqtt.Host = host;
if (port is not null) mqtt.Port = port.Value;
break;
case "port":
mqtt.Port = ToInt(value);
break;
case "host" or "net":
mqtt.Host = ToString(value);
break;
case "no_auth_user":
mqtt.NoAuthUser = ToString(value);
break;
case "tls":
if (value is Dictionary<string, object?> tlsDict)
ParseMqttTls(tlsDict, mqtt, errors);
break;
case "authorization" or "authentication":
if (value is Dictionary<string, object?> authDict)
ParseMqttAuth(authDict, mqtt, errors);
break;
case "ack_wait" or "ackwait":
mqtt.AckWait = ParseDuration(value);
break;
case "js_api_timeout" or "api_timeout":
mqtt.JsApiTimeout = ParseDuration(value);
break;
case "max_ack_pending" or "max_pending" or "max_inflight":
var pending = ToInt(value);
if (pending < 0 || pending > 0xFFFF)
errors.Add($"mqtt max_ack_pending invalid value {pending}, should be in [0..{0xFFFF}] range");
else
mqtt.MaxAckPending = (ushort)pending;
break;
case "js_domain":
mqtt.JsDomain = ToString(value);
break;
case "stream_replicas":
mqtt.StreamReplicas = ToInt(value);
break;
case "consumer_replicas":
mqtt.ConsumerReplicas = ToInt(value);
break;
case "consumer_memory_storage":
mqtt.ConsumerMemoryStorage = ToBool(value);
break;
case "consumer_inactive_threshold" or "consumer_auto_cleanup":
mqtt.ConsumerInactiveThreshold = ParseDuration(value);
break;
default:
break;
}
}
opts.Mqtt = mqtt;
}
private static void ParseMqttAuth(Dictionary<string, object?> dict, MqttOptions mqtt, List<string> errors)
{
foreach (var (key, value) in dict)
{
switch (key.ToLowerInvariant())
{
case "user" or "username":
mqtt.Username = ToString(value);
break;
case "pass" or "password":
mqtt.Password = ToString(value);
break;
case "token":
mqtt.Token = ToString(value);
break;
case "timeout":
mqtt.AuthTimeout = ToDouble(value);
break;
default:
break;
}
}
}
private static void ParseMqttTls(Dictionary<string, object?> dict, MqttOptions mqtt, List<string> errors)
{
foreach (var (key, value) in dict)
{
switch (key.ToLowerInvariant())
{
case "cert_file":
mqtt.TlsCert = ToString(value);
break;
case "key_file":
mqtt.TlsKey = ToString(value);
break;
case "ca_file":
mqtt.TlsCaCert = ToString(value);
break;
case "verify":
mqtt.TlsVerify = ToBool(value);
break;
case "verify_and_map":
var map = ToBool(value);
mqtt.TlsMap = map;
if (map) mqtt.TlsVerify = true;
break;
case "timeout":
mqtt.TlsTimeout = ToDouble(value);
break;
case "pinned_certs":
if (value is List<object?> pinnedList)
{
var certs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
foreach (var item in pinnedList)
{
if (item is string s)
certs.Add(s.ToLowerInvariant());
}
mqtt.TlsPinnedCerts = certs;
}
break;
default:
break;
}
}
}
// ─── Type conversion helpers ───────────────────────────────────
private static int ToInt(object? value) => value switch
@@ -653,6 +798,15 @@ public static class ConfigProcessor
_ => throw new FormatException($"Cannot convert {value?.GetType().Name ?? "null"} to string"),
};
private static double ToDouble(object? value) => value switch
{
double d => d,
long l => l,
int i => i,
string s when double.TryParse(s, NumberStyles.Float, CultureInfo.InvariantCulture, out var d) => d,
_ => throw new FormatException($"Cannot convert {value?.GetType().Name ?? "null"} to double"),
};
private static IReadOnlyList<string> ToStringList(object? value)
{
if (value is List<object?> list)