设置通知侦听器

本主题介绍如何为云眼特性标帜(Feature Flag)AB实验 C# SDK 设置和删除通知侦听器。

通知侦听器触发您在 SDK 中触发某些操作时定义的回调函数。

最常见的用例是将所有特性标帜(Feature Flag)决策的流发送到分析提供商或内部数据仓库，以将其与您拥有的有关用户的其他数据联接。

通知侦听器类型

有关通知侦听器类型和用例的更多信息，请参阅通知侦听器。

有关代码示例，请参阅以下部分。

添加和删除所有通知侦听器

下面的示例代码演示如何添加侦听器、删除侦听器、删除特定类型的所有侦听器（例如所有决策侦听器）以及删除所有侦听器。

C#

using EyeofcloudSDK; 
using EyeofcloudSDK.Entity; 
using EyeofcloudSDK.Event; 
using EyeofcloudSDK.Notifications; 
using NotificationType = EyeofcloudSDK.Notifications.NotificationCenter.NotificationType;  
var eyeofcloudClient = new Eyeofcloud(datafile);  

// Remove notification listener 
eyeofcloudClient.NotificationCenter.RemoveNotification(notificationId);

// Clear all notification listeners of a certain type 
eyeofcloudClient.NotificationCenter.ClearNotifications(NotificationType.Decision);  

// Clear all notifications 
eyeofcloudClient.NotificationCenter.ClearAllNotifications();

设置每种类型的通知侦听器

下面的示例代码演示如何设置每种类型的通知侦听器。

C#

using EyeofcloudSDK; using EyeofcloudSDK.Entity; 
using EyeofcloudSDK.Event; 
using EyeofcloudSDK.Notifications; 
using NotificationType = EyeofcloudSDK.Notifications.NotificationCenter.NotificationType;  

// import your third-party analytics integration here  
/************************************** 
* SET UP DECISION NOTIFICATION LISTENER 
**************************************/  

NotificationCenter.DecisionCallback OnDecision = (type, userId, userAttributes, decisionInfo) => 
{   
    // Access type on decisionObject to get type of decision   
    if (type == "flag")   
    {     
        var serializedJsonInfo = Newtonsoft.Json.JsonConvert.SerializeObject(decisionInfo);     
        Console.WriteLine($"Feature flag access related information: {serializedJsonInfo}");     
        // Send data to analytics provider here   
    } 
};  

// Add notification listener 
int notificationId = eyeofcloud.NotificationCenter.AddNotification(
    NotificationType.Decision, OnDecision
);  

/************************************** 
* SET UP LOG EVENT NOTIFICATION LISTENER 
**************************************/  
NotificationCenter.LogEventCallback OnLogEvent= (logEvent) =>  
{   
    // process the logEvent object here (send to analytics provider, audit/inspect data) 
};  

// Add notification listener 
int notificationId = eyeofcloud.NotificationCenter.AddNotification(
    NotificationType.LogEvent, OnLogEvent
);  

/************************************** 
* SET UP EYEOFCLOUD CONFIG NOTIFICATION LISTENER 
**************************************/  

// listen to EYEOFCLOUD_CONFIG_UPDATE to get updated data 
NotificationCenter.EyeofcloudConfigUpdateCallback OnConfigUpdate = () =>  
{   
    EyeofcloudConfig eyeofcloudConfig = eyeofcloud.GetEyeofcloudConfig(); 
};  

// Add notification listener 
int notificationId = eyeofcloud.NotificationCenter.AddNotification(NotificationType.EyeofcloudConfigUpdate, OnConfigUpdate);  

/************************************** 
* SET UP TRACK LISTENER 
**************************************/  

NotificationCenter.TrackCallback OnTrack = (string eventKey, string userId, UserAttributes userAttributes, EventTags eventTags, LogEvent logEvent) => 
{   
    // process the event here (send to analytics provider, audit/inspect data) 
};  

// Add notification listener 
int notificationId = eyeofcloud.NotificationCenter.AddNotification(
    NotificationType.Track, OnTrack
);