Adding health status to providers

src/TagzApp.Common/ISocialMediaProvider.cs

@@ -34,6 +34,12 @@ public interface ISocialMediaProvider
 	/// <returns></returns>
 	Task<IEnumerable<Content>> GetContentForHashtag(Hashtag tag, DateTimeOffset since);
 
+	/// <summary>
+	/// Report the health of the provider
+	/// </summary>
+	/// <returns></returns>
+	Task<(SocialMediaStatus Status, string Message)> GetHealth();
+
 	/// <summary>
 	/// Start the provider
 	/// </summary>

src/TagzApp.Common/SocialMediaStatus.cs

@@ -0,0 +1,12 @@
+namespace TagzApp.Common;
+
+/// <summary>
+/// Defines the health status of a Social Media Provider
+/// </summary>
+public enum SocialMediaStatus
+{
+	Unknown = -1,
+	Unhealthy = 0,
+	Degraded = 1,
+	Healthy = 2
+}

src/TagzApp.Providers.Blazot/BlazotProvider.cs

@@ -18,6 +18,9 @@ internal sealed class BlazotProvider : ISocialMediaProvider
 	public string Id => BlazotConstants.ProviderId;
 	public string DisplayName => BlazotConstants.DisplayName;
 
+	private SocialMediaStatus _Status = SocialMediaStatus.Unhealthy;
+	private string _StatusMessage = "Not started";
+
 	public string Description { get; init; } = "Blazot is an all new social networking platform and your launchpad to the social universe!";
 
 	public BlazotProvider(ILogger<BlazotProvider> logger, BlazotSettings settings,
@@ -65,12 +68,20 @@ public async Task<IEnumerable<Content>> GetContentForHashtag(Hashtag tag, DateTi
 
 			transmissions = await _TransmissionsService.GetHashtagTransmissionsAsync(tag, dateTimeOffset);
 
+			_Status = SocialMediaStatus.Healthy;
+			_StatusMessage = "OK";
+
 			if (transmissions == null)
 				return Enumerable.Empty<Content>();
+
 		}
 		catch (Exception ex)
 		{
 			_Logger.LogError(ex, "Error fetching Blazot Hashtag Transmissions: {message}", ex.Message);
+
+			_Status = SocialMediaStatus.Unhealthy;
+			_StatusMessage = $"Error fetching Blazot Hashtag Transmissions: {ex.Message}";
+
 		}
 
 		return _ContentConverter.ConvertToContent(transmissions, tag);
@@ -80,4 +91,6 @@ public Task StartAsync()
 	{
 		return Task.CompletedTask;
 	}
+
+	public Task<(SocialMediaStatus Status, string Message)> GetHealth() => Task.FromResult((_Status, _StatusMessage));
 }

src/TagzApp.Providers.Mastodon/MastodonProvider.cs

@@ -10,6 +10,8 @@ internal class MastodonProvider : ISocialMediaProvider, IHasNewestId
 
 	private readonly HttpClient _HttpClient;
 	private readonly ILogger _Logger;
+	private SocialMediaStatus _Status = SocialMediaStatus.Unhealthy;
+	private string _StatusMessage = "Not started";
 
 	public MastodonProvider(IHttpClientFactory httpClientFactory, ILogger<MastodonProvider> logger,
 		MastodonConfiguration configuration)
@@ -34,6 +36,9 @@ public MastodonProvider(IHttpClientFactory httpClientFactory, ILogger<MastodonPr
 	public async Task<IEnumerable<Content>> GetContentForHashtag(Hashtag tag, DateTimeOffset since)
 	{
 
+		_Status = SocialMediaStatus.Healthy;
+		_StatusMessage = "OK";
+
 		var targetUri = FormatUri(tag);
 
 		Message[]? messages = null;
@@ -49,12 +54,17 @@ public async Task<IEnumerable<Content>> GetContentForHashtag(Hashtag tag, DateTi
 		{
 
 			_Logger.LogError(ex, "Error getting content from Mastodon");
+			_Status = SocialMediaStatus.Unhealthy;
+			_StatusMessage = $"Error getting content from Mastodon: {ex.Message}";
+
 			return Enumerable.Empty<Content>();
 
 		}
 
 		if (messages is null || (!messages?.Any() ?? true))
 		{
+			_Status = SocialMediaStatus.Healthy;
+			_StatusMessage = "No new content found";
 			return Enumerable.Empty<Content>();
 		}
 
@@ -89,6 +99,11 @@ public async Task<IEnumerable<Content>> GetContentForHashtag(Hashtag tag, DateTi
 
 	}
 
+	public Task<(SocialMediaStatus Status, string Message)> GetHealth()
+	{
+		return Task.FromResult((_Status, _StatusMessage));
+	}
+
 	public Task StartAsync()
 	{
 		return Task.CompletedTask;

src/TagzApp.Providers.TwitchChat/ChatClient.cs

@@ -74,6 +74,7 @@ public void Init()
 
 	public string ChannelName { get; }
 	public string ChatBotName { get; }
+	public bool IsRunning => _ReceiveMessagesThread.IsAlive;
 
 	private readonly string _OAuthToken;
 	private readonly CancellationTokenSource _Shutdown;

src/TagzApp.Providers.TwitchChat/IChatClient.cs

@@ -5,4 +5,7 @@ public interface IChatClient : IDisposable
 	event EventHandler<NewMessageEventArgs> NewMessage;
 
 	void Init();
+
+	bool IsRunning { get; }
+
 }

src/TagzApp.Providers.TwitchChat/TwitchChatProvider.cs

@@ -15,6 +15,9 @@ public class TwitchChatProvider : ISocialMediaProvider, IDisposable
 	public TimeSpan NewContentRetrievalFrequency => TimeSpan.FromSeconds(1);
 	public string Description { get; init; } = "Twitch is where millions of people come together live every day to chat, interact, and make their own entertainment together.";
 
+	private SocialMediaStatus _Status = SocialMediaStatus.Unhealthy;
+	private string _StatusMessage = "Not started";
+
 	private static readonly ConcurrentQueue<Content> _Contents = new();
 	private static readonly CancellationTokenSource _CancellationTokenSource = new();
 	private readonly TwitchChatConfiguration _Settings;
@@ -43,13 +46,24 @@ internal TwitchChatProvider(IOptions<TwitchChatConfiguration> settings, ILogger<
 	private async Task ListenForMessages(IChatClient chatClient = null)
 	{
 
+		_Status = SocialMediaStatus.Degraded;
+		_StatusMessage = "Starting TwitchChat client";
+
 		var token = _CancellationTokenSource.Token;
 		_Client = chatClient ?? new ChatClient(_Settings.ChannelName, _Settings.ChatBotName, _Settings.OAuthToken, _Logger);
 
 		_Client.NewMessage += async (sender, args) =>
 		{
 
-			var profileUrl = await IdentifyProfilePic(args.UserName);
+			string profileUrl = string.Empty;
+			try
+			{
+				profileUrl = await IdentifyProfilePic(args.UserName);
+			}
+			catch (Exception ex)
+			{
+				_Logger.LogError(ex, "Failed to identify profile pic for {UserName}", args.UserName);
+			}
 
 			_Contents.Enqueue(new Content
 			{
@@ -70,7 +84,20 @@ private async Task ListenForMessages(IChatClient chatClient = null)
 			});
 		};
 
-		_Client.Init();
+		try
+		{
+			_Client.Init();
+		}
+		catch (Exception ex)
+		{
+			_Logger.LogError(ex, "Failed to initialize TwitchChat client");
+			_Status = SocialMediaStatus.Unhealthy;
+			_StatusMessage = $"Failed to initialize TwitchChat client: '{ex.Message}'";
+			return;
+		}
+
+		_Status = SocialMediaStatus.Healthy;
+		_StatusMessage = "OK";
 
 	}
 
@@ -82,6 +109,17 @@ private async Task<string> IdentifyProfilePic(string userName)
 	public Task<IEnumerable<Content>> GetContentForHashtag(Hashtag tag, DateTimeOffset since)
 	{
 
+		if (!_Client.IsRunning)
+		{
+
+			// mark status as unhealthy and return empty list
+			_Status = SocialMediaStatus.Unhealthy;
+			_StatusMessage = "TwitchChat client is not running";
+
+			return Task.FromResult(Enumerable.Empty<Content>());
+
+		}
+
 		var messages = _Contents.ToList();
 		if (messages.Count() == 0) return Task.FromResult(Enumerable.Empty<Content>());
 
@@ -91,6 +129,9 @@ public Task<IEnumerable<Content>> GetContentForHashtag(Hashtag tag, DateTimeOffs
 			_Contents.TryDequeue(out _);
 		}
 
+		_Status = SocialMediaStatus.Healthy;
+		_StatusMessage = "OK";
+
 		messages.ForEach(m => m.HashtagSought = tag.Text);
 
 		return Task.FromResult(messages.AsEnumerable());
@@ -131,4 +172,9 @@ public Task StartAsync()
 		ListenForMessages();
 		return Task.CompletedTask;
 	}
+
+	public Task<(SocialMediaStatus Status, string Message)> GetHealth()
+	{
+		return Task.FromResult((_Status, _StatusMessage));
+	}
 }

src/TagzApp.Providers.Twitter/TwitterProvider.cs

@@ -20,6 +20,9 @@
 	private const int _SearchMaxResults = 100;
 	private const string _SearchExpansions = "author_id,attachments.media_keys";
 
+	private SocialMediaStatus _Status = SocialMediaStatus.Unhealthy;
+	private string _StatusMessage = "Not started";
+
 	public string Id => "TWITTER";
 	public string DisplayName => "Twitter";
 	public TimeSpan NewContentRetrievalFrequency => TimeSpan.FromSeconds(30);
@@ -48,6 +51,9 @@
 #pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
 	{
 
+		_Status = SocialMediaStatus.Healthy;
+		_StatusMessage = "OK";
+
 		var tweetQuery = "#" + tag.Text.ToLowerInvariant().TrimStart('#') + " -is:retweet";
 		var sinceTerm = string.IsNullOrEmpty(NewestId) ? "" : $"&since_id={NewestId}";
 
@@ -63,13 +69,16 @@
 				//var response = await _HttpClient.GetAsync(targetUri);
 				//var rawText = await response.Content.ReadAsStringAsync();
 
 				recentTweets = await _HttpClient.GetFromJsonAsync<TwitterData>(targetUri);
 				NewestId = recentTweets.meta.newest_id ?? NewestId;
 
 			}
 			else
 			{
 
+				_Status = SocialMediaStatus.Degraded;
+				_StatusMessage = "Twitter provider is not activated - returning sample tweets";
+
 				var assembly = Assembly.GetExecutingAssembly();
 				var resourceName = "TagzApp.Providers.Twitter.Models.SampleTweets.json.gz";
 				string sampleJson = string.Empty;
@@ -87,8 +96,14 @@
 		}
 		catch (Exception ex)
 		{
+
 			Console.WriteLine($"Error retrieving tweets: {ex.Message}");
+
+			_Status = SocialMediaStatus.Unhealthy;
+			_StatusMessage = $"Error retrieving tweets: {ex.Message}";
+
 			_Logger.LogError(ex, $"Error retrieving tweets");
+
 		}
 
 		var outTweets = ConvertToContent(recentTweets, tag);
@@ -187,8 +202,12 @@
 			}
 			catch (Exception ex)
 			{
-				Console.WriteLine($"Error formatting twee ('{t.text}'): ${ex.Message}");
+				Console.WriteLine($"Error formatting tweet ('{t.text}'): ${ex.Message}");
 				_Logger.LogError(ex, $"Error formatting tweet: {t.text}");
+
+				_Status = SocialMediaStatus.Degraded;
+				_StatusMessage = $"Error formatting tweet: {t.text}";
+
 			}
 
 		}
@@ -215,4 +234,11 @@
 	{
 		return Task.CompletedTask;
 	}
+
+	public Task<(SocialMediaStatus Status, string Message)> GetHealth()
+	{
+
+		return Task.FromResult((_Status, _StatusMessage));
+
+	}
 }

src/TagzApp.Providers.YouTubeChat/YouTubeChatProvider.cs

@@ -32,14 +32,17 @@
 	private bool _DisposedValue;
 	private string _NextPageToken;
 
+	private SocialMediaStatus _Status = SocialMediaStatus.Unhealthy;
+	private string _StatusMessage = "Not started";
+
 	public YouTubeChatProvider(YouTubeChatConfiguration config, IOptions<ApplicationConfiguration> appConfig)
 	{
 		_ChatConfig = config;
 
 		if (appConfig.Value.YouTubeChatConfiguration == "{}") return;
 
 		var youtubeConfig = JsonSerializer.Deserialize<YouTubeChatApplicationConfiguration>(appConfig.Value.YouTubeChatConfiguration);
 		RefreshToken = youtubeConfig.RefreshToken;
 		LiveChatId = youtubeConfig.LiveChatId;
 		YouTubeEmailId = youtubeConfig.ChannelEmail;
 
@@ -70,9 +73,16 @@
 				_GoogleException = $"{LiveChatId}:{ex.Message}";
 				LiveChatId = string.Empty;
 			}
+
+			_Status = SocialMediaStatus.Unhealthy;
+			_StatusMessage = $"Exception while fetching YouTubeChat: {ex.Message}";
+
 			return Enumerable.Empty<Content>();
 		}
 
+		_Status = SocialMediaStatus.Healthy;
+		_StatusMessage = "OK";
+
 		return contents.Items.Select(i => new Content
 		{
 			Author = new Creator
@@ -115,6 +125,10 @@
 		catch (Exception ex)
 		{
 			Console.WriteLine($"Exception while refreshing token: {ex.Message}");
+
+			_Status = SocialMediaStatus.Unhealthy;
+			_StatusMessage = $"Exception while refreshing token: {ex.Message}";
+
 			throw;
 		}
 		var credential = new UserCredential(flow, "me", token);
@@ -123,6 +137,10 @@
 		{
 			HttpClientInitializer = credential
 		});
+
+		_Status = SocialMediaStatus.Degraded;
+		_StatusMessage = "Starting YouTubeChat client";
+
 		return _Service;
 	}
 
@@ -166,6 +184,10 @@
 		{
 			// GoogleApiException: The service youtube has thrown an exception. HttpStatusCode is Forbidden. The user is not enabled for live streaming.
 			Console.WriteLine($"Exception while fetching YouTube broadcasts: {ex.Message}");
+
+			_Status = SocialMediaStatus.Unhealthy;
+			_StatusMessage = $"Exception while fetching YouTube broadcasts: {ex.Message}";
+
 			return Enumerable.Empty<YouTubeBroadcast>();
 		}
 
@@ -217,6 +239,8 @@
 		GC.SuppressFinalize(this);
 	}
 
+	public Task<(SocialMediaStatus Status, string Message)> GetHealth() => Task.FromResult((_Status, _StatusMessage));
+
 	#endregion
 
 }

src/TagzApp.Providers.Youtube/YoutubeProvider.cs

@@ -12,6 +12,9 @@ internal class YoutubeProvider : ISocialMediaProvider
 	public string DisplayName => "Youtube";
 	public string Description { get; init; }
 
+	private SocialMediaStatus _Status = SocialMediaStatus.Unhealthy;
+	private string _StatusMessage = "Not started";
+
 	public TimeSpan NewContentRetrievalFrequency => TimeSpan.FromSeconds(30);
 
 	public YoutubeProvider(YoutubeConfiguration options)
@@ -35,6 +38,9 @@ public async Task<IEnumerable<Content>> GetContentForHashtag(Hashtag tag, DateTi
 
 		var searchListResponse = await searchListRequest.ExecuteAsync();
 
+		_Status = SocialMediaStatus.Healthy;
+		_StatusMessage = "OK";
+
 		if (searchListResponse.Items == null || (!searchListResponse.Items?.Any() ?? true))
 		{
 			return Enumerable.Empty<Content>();
@@ -63,4 +69,7 @@ public Task StartAsync()
 	{
 		return Task.CompletedTask;
 	}
+
+	public Task<(SocialMediaStatus Status, string Message)> GetHealth() => Task.FromResult((_Status, _StatusMessage));
+
 }