/// <summary>
/// Initialize, but only once.
/// </summary>
/// <param name="key"></param>
/// <param name="info"></param>
/// <returns></returns>
public async Task <bool> Initialize(string url, int port, string topic)
{
if (IsInitialized)
{
return(true);
}
try
{
PublishClient = new MqttFactory().CreateMqttClient();
await MqttHelpers.ConnectClient(PublishClient, url, port);
SubscribeClient = new MqttFactory().CreateMqttClient();
await MqttHelpers.ConnectClient(SubscribeClient, url, port);
MqttHelpers.MqttSubscribeSetHandler(SubscribeClient, HandleReceive);
//var result = Task.Run(() => ConnectClient(publishClient, url, port)).Result;
CancellationToken cancelToken = new CancellationToken();
MqttHelpers.MqttSubscribe(SubscribeClient, topic, cancelToken);
IsInitialized = true;
return(true);
}
catch (Exception)
{
return(false);
}
}
/// <summary>
/// Method called when the simulation run is initialized.
/// (after Run is specified but before the simulation actually begins)
/// </summary>
public void Initialize()
{
try
{
if (MqttConnector.ServerUrl == null)
{
return;
}
// Subscribe to the MQTT server and topic
SubscriberClient = new MqttFactory().CreateMqttClient();
var task = Task.Run(() => MqttHelpers.ConnectClient(SubscriberClient, MqttConnector.ServerUrl, MqttConnector.ServerPort));
task.Wait();
// Get ready to receive
MqttHelpers.MqttSubscribeSetHandler(SubscriberClient, HandlePayload);
// Subscribe to the MQTT's Server/Broker for a topic
CancellationToken cancelToken = new CancellationToken();
MqttHelpers.MqttSubscribe(SubscriberClient, SubscribeTopic, cancelToken);
}
catch (Exception ex)
{
Alert($"Initialize. Subscribing to MQTT:{ex.Message}");
}
}
/// <summary>
/// Method called when the simulation run starts.
/// Called after the constructor.
/// </summary>
public void Initialize()
{
try
{
////var mqttEvent = _data.Events["MqttEvent"];
PublishClient = new MqttFactory().CreateMqttClient();
var t = Task.Run(() => MqttHelpers.ConnectClient(PublishClient, ServerUrl, ServerPort));
//Todo: This will throw an error if there are no MQTT Servers.
t.Wait();
var info = _data.ExecutionContext.ExecutionInformation;
string payload = $"Project:{info.ProjectFolder} {info.ProjectName} Model={info.ModelName} Scenario={info.ScenarioName} Replication={info.ReplicationNumber}";
}
catch (Exception ex)
{
Alert($"Cannot Initialize. Err={ex.Message}");
}
}
/// <summary>
/// Method called when the simulation run starts.
/// Called after the constructor.
/// </summary>
public void Initialize()
{
try
{
using (SubscribeClient = new MqttFactory().CreateMqttClient())
{
var t = Task.Run(() => MqttHelpers.ConnectClient(SubscribeClient, ServerUrl, ServerPort));
//Todo: This will throw an error if there are no MQTT Servers.
t.Wait(2000);
var info = _data.ExecutionContext.ExecutionInformation;
string payload = $"Project:{info.ProjectFolder} {info.ProjectName} Model={info.ModelName} Scenario={info.ScenarioName} Replication={info.ReplicationNumber}";
}
LogIt($"Info: Connecting to Server: Url={ServerUrl} Port={ServerPort}");
}
catch (Exception ex)
{
Alert($"MQTT Subscribe. Cannot Initalize. Err={ex.Message}");
}
}
/// <summary>
/// Method called when a process token executes the step.
/// Does an MQTT publish to the MqttServer with MqttTopic.
/// The data that is published is MqttPayload
/// </summary>
public ExitType Execute(IStepExecutionContext context)
{
string topic = "";
try
{
// Example of how to get the value of a step property.
var eprPayload = (IExpressionPropertyReader)prPayload;
var payload = eprPayload.GetExpressionValue(context).ToString();
topic = prTopic.GetStringValue(context);
// Get the MQTT connector which holds the MQTT client information
MqttPublishConnector mqttConnector = (MqttPublishConnector)prServerElement.GetElement(context);
// The referenced element has a MQTT client
IMqttClient client = (IMqttClient)mqttConnector.PublishClient;
if (client.IsConnected)
{
MqttHelpers.MqttPublish(client, topic, payload); // payload);
Logit(context, $"Info: Topic={topic} Payload={payload}");
return(ExitType.FirstExit);
}
else
{
Logit(context, $"Execute. Step Topic={topic} .Client not connected. Topic={topic} Payload={payload}.");
return(ExitType.AlternateExit);
}
}
catch (Exception ex)
{
Logit(context, $"Execute Topic={topic} Error={ex.Message}");
return(ExitType.AlternateExit);
}
}
