# Class NotifierService

OptimaJet.Workflow.RealTimeTrackingPlugin.Notifiers.NotifierService

The notifier service.

Namespace: [OptimaJet.Workflow.RealTimeTrackingPlugin.Notifiers](https://api.workflowengine.io/realtime-tracking-plugin/OptimaJet.Workflow.RealTimeTrackingPlugin.Notifiers/)

```csharp
public class NotifierService
```

## Constructors

`public NotifierService(IHubContext<WorkflowEngineHub> hubContext)` 

Initializes a new instance of the [NotifierService](https://api.workflowengine.io/realtime-tracking-plugin/OptimaJet.Workflow.RealTimeTrackingPlugin.Notifiers/NotifierService/) class.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `hubContext` | `IHubContext<WorkflowEngineHub>` | An instance of the SignalR.IHubContext?text=IHubContext<WorkflowEngineHub>. |

## Properties

`public bool IsNotifierSet { get; }` 

A read-only property that returns `true` if the notifier is set, otherwise `false`.

`public BaseNotifier? Notifier { get; }` 

A read-only property that returns the current notifier instance, or `null` if none is set.

## Methods

`public void SetNotifier(BaseNotifier notifier)` 

Sets the notifier.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `notifier` | `BaseNotifier` | An instance of [BaseNotifier](https://api.workflowengine.io/realtime-tracking-plugin/OptimaJet.Workflow.RealTimeTrackingPlugin.Notifiers/BaseNotifier/) class. |

`public void ClearNotifier()` 

Clears the notifier.

`public Task OnConnectedAsync(string processId, string connectionId)` 

Method to handle client connection to a process for tracking purposes.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `processId` | `String` | ProcessId of the ProcessInstance. |
| `connectionId` | `String` | The unique identifier of the client's connection. |

### Returns

| Type | Description |
| --- | --- |
| `Task` |  |

`public Task OnDisconnectedAsync(string connectionId)` 

Handles the disconnection of a connection.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `connectionId` | `String` | The unique identifier for the connection. |

### Returns

| Type | Description |
| --- | --- |
| `Task` |  |

`public Task StartAsync()` 

Starts the plugin.

### Returns

| Type | Description |
| --- | --- |
| `Task` |  |

`public Task StopAsync()` 

Stops the plugin.

### Returns

| Type | Description |
| --- | --- |
| `Task` |  |

[Previous MultiServerNotifier](https://api.workflowengine.io/realtime-tracking-plugin/OptimaJet.Workflow.RealTimeTrackingPlugin.Notifiers/MultiServerNotifier/) [Next SingleServerNotifier](https://api.workflowengine.io/realtime-tracking-plugin/OptimaJet.Workflow.RealTimeTrackingPlugin.Notifiers/SingleServerNotifier/)