public async Task Start_Stop()
{
using (var testEnvironment = new TestEnvironment())
{
var factory = new MqttFactory();
var server = await testEnvironment.StartServerAsync();
var managedClient = new ManagedMqttClient(testEnvironment.CreateClient(), new MqttNetLogger().CreateChildLogger());
var clientOptions = new MqttClientOptionsBuilder()
.WithTcpServer("localhost", testEnvironment.ServerPort);
TaskCompletionSource <bool> connected = new TaskCompletionSource <bool>();
managedClient.ConnectedHandler = new MqttClientConnectedHandlerDelegate(e => { connected.SetResult(true); });
await managedClient.StartAsync(new ManagedMqttClientOptionsBuilder()
.WithClientOptions(clientOptions)
.Build());
await connected.Task;
await managedClient.StopAsync();
Assert.AreEqual(0, (await server.GetClientStatusAsync()).Count);
}
}
public async Task Start_Stop()
{
using (var testEnvironment = new TestEnvironment(TestContext))
{
var server = await testEnvironment.StartServerAsync();
var managedClient = new ManagedMqttClient(testEnvironment.CreateClient(), new MqttNetLogger());
var clientOptions = new MqttClientOptionsBuilder()
.WithTcpServer("localhost", testEnvironment.ServerPort);
var connected = GetConnectedTask(managedClient);
await managedClient.StartAsync(new ManagedMqttClientOptionsBuilder()
.WithClientOptions(clientOptions)
.Build());
await connected;
await managedClient.StopAsync();
await Task.Delay(500);
Assert.AreEqual(0, (await server.GetClientStatusAsync()).Count);
}
}
private void _disconnect()
{
try
{
if (_mqttClient != null && _mqttClient.IsConnected == false)
{
return;
}
DisconnectMessage disconnectMsg = new DisconnectMessage();
disconnectMsg.ScadaList = new Dictionary <string, DisconnectMessage.DObject>();
DisconnectMessage.DObject scada = new DisconnectMessage.DObject();
disconnectMsg.ScadaList.Add(_options.ScadaId, scada);
string payload = JsonConvert.SerializeObject(disconnectMsg);
var message = new MqttApplicationMessageBuilder()
.WithTopic((_options.Type == EdgeType.Gateway) ? _scadaConnTopic : _deviceConnTopic)
.WithPayload(payload)
.WithAtLeastOnceQoS()
.WithRetainFlag(true)
.Build();
_mqttClient.PublishAsync(message).ContinueWith(t => _mqttClient.StopAsync());
}
catch (Exception ex)
{
//_logger.Error( ex.ToString() );
}
}
public async Task Storage_Queue_Drains()
{
using (var testEnvironment = new TestEnvironment())
{
testEnvironment.IgnoreClientLogErrors = true;
testEnvironment.IgnoreServerLogErrors = true;
var factory = new MqttFactory();
var server = await testEnvironment.StartServerAsync();
var managedClient = new ManagedMqttClient(testEnvironment.CreateClient(), new MqttNetLogger().CreateChildLogger());
var clientOptions = new MqttClientOptionsBuilder()
.WithTcpServer("localhost", testEnvironment.ServerPort);
var storage = new ManagedMqttClientTestStorage();
TaskCompletionSource <bool> connected = new TaskCompletionSource <bool>();
managedClient.ConnectedHandler = new MqttClientConnectedHandlerDelegate(e =>
{
managedClient.ConnectedHandler = null;
connected.SetResult(true);
});
await managedClient.StartAsync(new ManagedMqttClientOptionsBuilder()
.WithClientOptions(clientOptions)
.WithStorage(storage)
.WithAutoReconnectDelay(System.TimeSpan.FromSeconds(5))
.Build());
await connected.Task;
await testEnvironment.Server.StopAsync();
await managedClient.PublishAsync(new MqttApplicationMessage { Topic = "1" });
//Message should have been added to the storage queue in PublishAsync,
//and we are awaiting PublishAsync, so the message should already be
//in storage at this point (i.e. no waiting).
Assert.AreEqual(1, storage.GetMessageCount());
connected = new TaskCompletionSource <bool>();
managedClient.ConnectedHandler = new MqttClientConnectedHandlerDelegate(e =>
{
managedClient.ConnectedHandler = null;
connected.SetResult(true);
});
await testEnvironment.Server.StartAsync(new MqttServerOptionsBuilder()
.WithDefaultEndpointPort(testEnvironment.ServerPort).Build());
await connected.Task;
//Wait 500ms here so the client has time to publish the queued message
await Task.Delay(500);
Assert.AreEqual(0, storage.GetMessageCount());
await managedClient.StopAsync();
}
}
private void _disconnect()
{
try
{
if (_mqttClient != null && _mqttClient.IsConnected == false)
{
return;
}
DisconnectMessage disconnectMsg = new DisconnectMessage();
string payload = JsonConvert.SerializeObject(disconnectMsg);
var message = new MqttApplicationMessageBuilder()
.WithTopic(_scadaConnTopic)
.WithPayload(payload)
.WithAtLeastOnceQoS()
.WithRetainFlag(true)
.Build();
_mqttClient.PublishAsync(message).ContinueWith(t => _mqttClient.StopAsync());
}
catch (Exception ex)
{
//_logger.Error( ex.ToString() );
}
}
protected override IEnumerable <Prompt> Execute_Subclass()
{
if (Signals == null || !Signals.Any())
{
GetSignalNullReason();
return(Prompts);
}
try
{
StartMqttClient().Wait();
}
catch (Exception ex)
{
Logger.LogError(LogCategory.Processor, this.Name, $"Starting MQTT Client failed");
Prompts.Add(ex.ToPrompt());
return(Prompts);
}
_tempSignals = Signals.ToList();
// Read existing subscriptions
if (!ReadExistingSubscriptions(_tempSignals).Result)
{
Prompts.Add(new Prompt {
Message = $"Did not successfully read all existing subscriptions."
});
}
// Subscribe and read new subscriptions
if (!SubscribeAndReadNew(_tempSignals).Result)
{
Prompts.Add(new Prompt {
Message = $"Did not successfully read all new subscriptions."
});
}
Logger.LogTrace(LogCategory.Processor, this.Name, "Waiting for all messages be be published...");
while (ManagedMqttClient.PendingApplicationMessagesCount > 0)
{
Logger.LogTrace(LogCategory.Processor, this.Name, $"{ManagedMqttClient.PendingApplicationMessagesCount} messages left waiting to be published..");
if (this.IsCancellationRequested)
{
return(new List <Prompt>());
}
Task.Delay(1000).Wait();
}
Logger.LogTrace(LogCategory.Processor, this.Name, "Stopping Managed MQTT Client..");
ManagedMqttClient.StopAsync().Wait();
while (ManagedMqttClient.IsStarted)
{
Logger.LogTrace(LogCategory.Processor, this.Name, "Still waiting for MQTT Client to Stop...");
Task.Delay(1000).Wait();
}
// Update the cache with new values..
Signals = _tempSignals;
return(Prompts);
}
protected override void CleanupBeforeCancellation()
{
try
{
ManagedMqttClient.StopAsync().Wait();
ManagedMqttClient.StopAsync().Dispose();
}
catch (Exception ex)
{
Logger.LogError(LogCategory.Processor, this.Name, "Managed MQTT Client failed to stop..");
}
}
protected override IEnumerable <Prompt> Execute_Subclass()
{
StartMqttClient().Wait();
for (;;)
{
if (IsCancellationRequested)
{
ManagedMqttClient.StopAsync().Wait();
return(Prompts);
}
Task.Delay(5000).Wait();
}
}
protected override IEnumerable <Prompt> Execute_Subclass()
{
try
{
StartMqttClient().Wait();
}
catch (Exception ex)
{
Logger.LogError(LogCategory.Processor, this.Name, $"Starting MQTT Client failed");
Prompts.Add(ex.ToPrompt());
return(Prompts);
}
if (Signals == null)
{
Prompts.Add(new Prompt
{
Message = "There are no signals in the cache, please run the SetupProcessor or verify that it has run successfully.",
Severity = PromptSeverity.MayNotContinue
});
return(Prompts);
}
// Read existing subscriptions
if (!ReadExistingSubscriptions(Signals).Result)
{
Prompts.Add(new Prompt {
Message = $"Did not successfully read all existing subscriptions."
});
}
// Subscribe and read new subscriptions
if (!SubscribeAndReadNew(Signals).Result)
{
Prompts.Add(new Prompt {
Message = $"Did not successfully read all new subscriptions."
});
}
ManagedMqttClient.StopAsync().Wait();
ManagedMqttClient.Dispose();
// Update the cache with new values..
Signals = Signals;
return(Prompts);
}
public async Task Storage_Queue_Drains()
{
using (var testEnvironment = CreateTestEnvironment())
{
testEnvironment.IgnoreClientLogErrors = true;
testEnvironment.IgnoreServerLogErrors = true;
await testEnvironment.StartServer();
var managedClient = new ManagedMqttClient(testEnvironment.CreateClient(), new MqttNetEventLogger());
var clientOptions = new MqttClientOptionsBuilder().WithTcpServer("localhost", testEnvironment.ServerPort);
var storage = new ManagedMqttClientTestStorage();
var connected = GetConnectedTask(managedClient);
await managedClient.StartAsync(
new ManagedMqttClientOptionsBuilder().WithClientOptions(clientOptions).WithStorage(storage).WithAutoReconnectDelay(TimeSpan.FromSeconds(5)).Build());
await connected;
await testEnvironment.Server.StopAsync();
await managedClient.EnqueueAsync("1");
//Message should have been added to the storage queue in PublishAsync,
//and we are awaiting PublishAsync, so the message should already be
//in storage at this point (i.e. no waiting).
Assert.AreEqual(1, storage.GetMessageCount());
connected = GetConnectedTask(managedClient);
await testEnvironment.Server.StartAsync();
await connected;
//Wait 500ms here so the client has time to publish the queued message
await Task.Delay(500);
Assert.AreEqual(0, storage.GetMessageCount());
await managedClient.StopAsync();
}
}
public static async Task <bool> ConnectMQTT()
{
if (mqttClient != null)
{
await mqttClient.StopAsync();
}
Debug.Write("Connecting to MQTT...");
mqttClient = (ManagedMqttClient) new MqttFactory().CreateManagedMqttClient();
try
{
var options = new MqttClientOptionsBuilder()
.WithClientId(Preferences.Get("deviceName", "")) //client name
.WithTcpServer(Preferences.Get("brokerIp", "")) //mqtt server
.WithCredentials(Preferences.Get("brokerUsername", ""), Preferences.Get("brokerPassword", "")) //username, password
.Build();
var managedOptions = new ManagedMqttClientOptionsBuilder()
.WithAutoReconnectDelay(TimeSpan.FromSeconds(5))
.WithClientOptions(options)
.Build();
await mqttClient.StartAsync(managedOptions);
}
catch (Exception e)
{
Debug.WriteLine("error while connecting: " + e.Message);
};
// if (!mqttClient.IsConnected)
// {
//#if !DEBUG
// if (await App.Current.MainPage.DisplayAlert("MQTT connection failed", "do you want to enter settings?", "yes", "no"))
// await App.Current.MainPage.Navigation.PushAsync(new SettingsPassword( new SettingsPage()), true);
//#endif
// Debug.WriteLine("connecting failed");
// return false;
// }
//Debug.WriteLine("connected");
return(true);
}
public async Task Subscriptions_Are_Cleared_At_Logout()
{
using (var testEnvironment = new TestEnvironment(TestContext))
{
await testEnvironment.StartServerAsync().ConfigureAwait(false);
var sendingClient = await testEnvironment.ConnectClientAsync().ConfigureAwait(false);
await sendingClient.PublishAsync(new MqttApplicationMessage
{
Topic = "topic",
Payload = new byte[] { 1 },
Retain = true
});
// Wait a bit for the retained message to be available
await Task.Delay(500);
await sendingClient.DisconnectAsync();
// Now use the managed client and check if subscriptions get cleared properly.
var clientOptions = new MqttClientOptionsBuilder()
.WithTcpServer("localhost", testEnvironment.ServerPort);
var receivedManagedMessages = new List <MqttApplicationMessage>();
var managedClient = new ManagedMqttClient(testEnvironment.CreateClient(), new MqttNetLogger());
managedClient.ApplicationMessageReceivedHandler = new MqttApplicationMessageReceivedHandlerDelegate(c =>
{
receivedManagedMessages.Add(c.ApplicationMessage);
});
await managedClient.SubscribeAsync("topic");
await managedClient.StartAsync(new ManagedMqttClientOptionsBuilder()
.WithClientOptions(clientOptions)
.WithAutoReconnectDelay(TimeSpan.FromSeconds(1))
.Build());
await Task.Delay(500);
Assert.AreEqual(1, receivedManagedMessages.Count);
await managedClient.StopAsync();
await Task.Delay(500);
await managedClient.StartAsync(new ManagedMqttClientOptionsBuilder()
.WithClientOptions(clientOptions)
.WithAutoReconnectDelay(TimeSpan.FromSeconds(1))
.Build());
await Task.Delay(1000);
// After reconnect and then some delay, the retained message must not be received,
// showing that the subscriptions were cleared
Assert.AreEqual(1, receivedManagedMessages.Count);
// Make sure that it gets received after subscribing again.
await managedClient.SubscribeAsync("topic");
await Task.Delay(500);
Assert.AreEqual(2, receivedManagedMessages.Count);
}
}
private async Task Disconnect()
{
await mqttClient.StopAsync();
}
