Added operation diagnostic data

To assist with troubleshooting

BirthdayBot/BackgroundServices/BirthdayRoleUpdate.vb

@@ -18,7 +18,7 @@ Class BirthdayRoleUpdate
     ''' Does processing on all available guilds at once.
     ''' </summary>
     Public Overrides Async Function OnTick() As Task
-        Dim tasks As New List(Of Task(Of Integer))
+        Dim tasks As New List(Of Task)
         For Each guild In BotInstance.DiscordClient.Guilds
             Dim t = ProcessGuildAsync(guild)
             tasks.Add(t)
@@ -32,6 +32,7 @@ Class BirthdayRoleUpdate
                       Select task.Exception
             Log($"Encountered {exs.Count} errors during bulk guild processing.")
             For Each iex In exs
+                ' TODO probably not a good idea
                 Log(iex.ToString())
             Next
         End Try
@@ -53,7 +54,10 @@ Class BirthdayRoleUpdate
         ' TODO metrics for role sets, unsets, announcements - and I mentioned this above too
     End Function
 
-    Private Async Function ProcessGuildAsync(guild As SocketGuild) As Task(Of Integer)
+    ''' <summary>
+    ''' Main function where actual guild processing occurs.
+    ''' </summary>
+    Private Async Function ProcessGuildAsync(guild As SocketGuild) As Task
         ' Gather required information
         Dim tz As String
         Dim users As IEnumerable(Of GuildUserSettings)
@@ -61,15 +65,19 @@ Class BirthdayRoleUpdate
         Dim channel As SocketTextChannel = Nothing
         Dim announce As (String, String)
         Dim announceping As Boolean
+        Dim op As OperationStatus
 
-        If Not BotInstance.GuildCache.ContainsKey(guild.Id) Then Return 0 ' guild not yet fully loaded; skip processing
+        ' Skip processing of guild if local info has not yet been loaded
+        If Not BotInstance.GuildCache.ContainsKey(guild.Id) Then Return
 
+        ' Lock once to grab all info
         Dim gs = BotInstance.GuildCache(guild.Id)
         With gs
             tz = .TimeZone
             users = .Users
             announce = .AnnounceMessages
             announceping = .AnnouncePing
+            op = .OperationLog
 
             If .AnnounceChannelId.HasValue Then channel = guild.GetTextChannel(gs.AnnounceChannelId.Value)
             If .RoleId.HasValue Then role = guild.GetRole(gs.RoleId.Value)
@@ -81,55 +89,57 @@ Class BirthdayRoleUpdate
 
         ' Set birthday roles, get list of users that had the role added
         ' But first check if we are able to do so. Letting all requests fail instead will lead to rate limiting.
-        Dim correctRoleSettings = HasCorrectRoleSettings(guild, role)
-        Dim gotForbidden = False
-
-        Dim announceNames As IEnumerable(Of SocketGuildUser) = Nothing
-        If correctRoleSettings Then
-            Try
-                announceNames = Await UpdateGuildBirthdayRoles(guild, role, birthdays)
-            Catch ex As Discord.Net.HttpException
-                If ex.HttpCode = HttpStatusCode.Forbidden Then
-                    gotForbidden = True
-                Else
-                    Throw
-                End If
-            End Try
+        Dim roleCheck = CheckCorrectRoleSettings(guild, role)
+        If Not roleCheck.Item1 Then
+            SyncLock op
+                op(OperationType.BirthdayRole) = New OperationInfo(New Exception(roleCheck.Item2))
+                op(OperationType.BirthdayAnnounce) = Nothing
+            End SyncLock
+            Return
         End If
 
-        ' Update warning flag
-        Dim updateError = Not correctRoleSettings Or gotForbidden
-        ' Quit now if the warning flag was set. Announcement data is not available.
-        If updateError Then Return 0
+        Dim announcementList As IEnumerable(Of SocketGuildUser)
+        ' Do actual role updating
+        Try
+            announcementList = Await UpdateGuildBirthdayRoles(guild, role, birthdays)
+            SyncLock op
+                op(OperationType.BirthdayRole) = New OperationInfo()
+            End SyncLock
+        Catch ex As Discord.Net.HttpException
+            SyncLock op
+                op(OperationType.BirthdayRole) = New OperationInfo(ex)
+                op(OperationType.BirthdayAnnounce) = Nothing
+            End SyncLock
+            If ex.HttpCode <> HttpStatusCode.Forbidden Then
+                ' Send unusual exceptions to calling method
+                Throw
+            End If
+            Return
+        End Try
 
-        If announceNames.Count <> 0 Then
-            ' Send out announcement message
-            Await AnnounceBirthdaysAsync(announce, announceping, channel, announceNames)
+        If announcementList.Count <> 0 Then
+            Await AnnounceBirthdaysAsync(announce, announceping, channel, announcementList, op)
         End If
-        Return announceNames.Count
     End Function
 
     ''' <summary>
     ''' Checks if the bot may be allowed to alter roles.
     ''' </summary>
-    Private Function HasCorrectRoleSettings(guild As SocketGuild, role As SocketRole) As Boolean
+    Private Function CheckCorrectRoleSettings(guild As SocketGuild, role As SocketRole) As (Boolean, String)
         If role Is Nothing Then
-            ' Designated role not found or defined in guild
-            Return False
+            Return (False, "Designated role not found or defined in guild")
         End If
 
         If Not guild.CurrentUser.GuildPermissions.ManageRoles Then
-            ' Bot user cannot manage roles
-            Return False
+            Return (False, "Bot does not contain Manage Roles permission")
         End If
 
         ' Check potential role order conflict
         If role.Position >= guild.CurrentUser.Hierarchy Then
-            ' Target role is at or above bot's highest role.
-            Return False
+            Return (False, "Targeted role is at or above bot's highest rank")
         End If
 
-        Return True
+        Return (True, "Success")
     End Function
 
     ''' <summary>
@@ -219,10 +229,16 @@ Class BirthdayRoleUpdate
     ''' who have just had their birthday role added.
     ''' </summary>
     Private Async Function AnnounceBirthdaysAsync(announce As (String, String),
-                                                 announcePing As Boolean,
-                                                 c As SocketTextChannel,
-                                                 names As IEnumerable(Of SocketGuildUser)) As Task
-        If c Is Nothing Then Return
+                                                  announcePing As Boolean,
+                                                  c As SocketTextChannel,
+                                                  names As IEnumerable(Of SocketGuildUser),
+                                                  op As OperationStatus) As Task
+        If c Is Nothing Then
+            SyncLock op
+                op(OperationType.BirthdayAnnounce) = New OperationInfo("Announcement channel missing or undefined")
+            End SyncLock
+            Return
+        End If
 
         Dim announceMsg As String
         If names.Count = 1 Then
@@ -252,9 +268,13 @@ Class BirthdayRoleUpdate
 
         Try
             Await c.SendMessageAsync(announceMsg.Replace("%n", namedisplay.ToString()))
+            SyncLock op
+                op(OperationType.BirthdayAnnounce) = New OperationInfo()
+            End SyncLock
         Catch ex As Discord.Net.HttpException
-            ' Ignore
-            ' TODO keep tabs on this somehow for troubleshooting purposes
+            SyncLock op
+                op(OperationType.BirthdayAnnounce) = New OperationInfo(ex)
+            End SyncLock
         End Try
     End Function
 End Class

BirthdayBot/BirthdayBot.vb

@@ -10,6 +10,7 @@ Class BirthdayBot
     Private ReadOnly _cmdsListing As ListingCommands
     Private ReadOnly _cmdsHelp As HelpInfoCommands
     Private ReadOnly _cmdsMods As ManagerCommands
+    Private ReadOnly _cmdsDiag As DiagnosticCommands
 
     Private WithEvents Client As DiscordShardedClient
     Private ReadOnly _worker As BackgroundServiceRunner
@@ -49,15 +50,21 @@ Class BirthdayBot
         For Each item In _cmdsMods.Commands
             _dispatchCommands.Add(item.Item1, item.Item2)
         Next
+        _cmdsDiag = New DiagnosticCommands(Me, conf)
+        For Each item In _cmdsDiag.Commands
+            _dispatchCommands.Add(item.Item1, item.Item2)
+        Next
     End Sub
 
     Public Async Function Start() As Task
         Await Client.LoginAsync(TokenType.Bot, Config.BotToken)
         Await Client.StartAsync()
 
+#If Not DEBUG Then
         Log("Background processing", "Delaying start")
         Await Task.Delay(90000) ' TODO don't keep doing this
         Log("Background processing", "Delay complete")
+#End If
         _worker.Start()
 
         Await Task.Delay(-1)
@@ -85,8 +92,8 @@ Class BirthdayBot
         Return Task.CompletedTask
     End Function
 
-    Private Async Function SetStatus() As Task Handles Client.ShardConnected
-        Await Client.SetGameAsync(CommandPrefix + "help")
+    Private Async Function SetStatus(shard As DiscordSocketClient) As Task Handles Client.ShardConnected
+        Await shard.SetGameAsync(CommandPrefix + "help")
     End Function
 
     Private Async Function Dispatch(msg As SocketMessage) As Task Handles Client.MessageReceived

BirthdayBot/BirthdayBot.vbproj

@@ -4,7 +4,7 @@
     <OutputType>Exe</OutputType>
     <RootNamespace>BirthdayBot</RootNamespace>
     <TargetFramework>netcoreapp2.0</TargetFramework>
-    <Version>1.3.4</Version>
+    <Version>1.3.6</Version>
     <Authors>Noi</Authors>
     <Company />
     <Description>Discord bot for birthday reminders.</Description>

BirthdayBot/Configuration.vb

@@ -7,6 +7,8 @@ Imports System.IO
 ''' </summary>
 Class Configuration
     Public ReadOnly Property BotToken As String
+    Public ReadOnly Property LogWebhook As String
+    Public ReadOnly Property DiagnosticChannel As ULong
     Public ReadOnly Property DBotsToken As String
     Public ReadOnly Property DatabaseSettings As Database
 
@@ -23,11 +25,19 @@ Class Configuration
         End If
 
         Dim jc = JObject.Parse(File.ReadAllText(confPath))
-        BotToken = jc("BotToken").Value(Of String)()
+
+        BotToken = jc("BotToken")?.Value(Of String)()
         If String.IsNullOrWhiteSpace(BotToken) Then
             Throw New Exception("'BotToken' must be specified.")
         End If
 
+        LogWebhook = jc("LogWebhook")?.Value(Of String)()
+        If String.IsNullOrWhiteSpace(LogWebhook) Then
+            Throw New Exception("'LogWebhook' must be specified.")
+        End If
+
+        DiagnosticChannel = jc("DiagnosticChannel").Value(Of ULong)()
+
         Dim dbj = jc("DBotsToken")
         If dbj IsNot Nothing Then
             DBotsToken = dbj.Value(Of String)()
@@ -35,7 +45,7 @@ Class Configuration
             DBotsToken = Nothing
         End If
 
-        Dim sqlcs = jc("SqlConnectionString").Value(Of String)()
+        Dim sqlcs = jc("SqlConnectionString")?.Value(Of String)()
         If String.IsNullOrWhiteSpace(sqlcs) Then
             Throw New Exception("'SqlConnectionString' must be specified.")
         End If

BirthdayBot/Data/GuildStateInformation.vb

@@ -7,7 +7,7 @@ Imports NpgsqlTypes
 ''' Holds various pieces of state information for a guild the bot is operating in.
 ''' Includes, among other things, a copy of the guild's settings and a list of all known users with birthdays.
 ''' </summary>
-Friend Class GuildStateInformation
+Class GuildStateInformation
     Public ReadOnly Property GuildId As ULong
     Private ReadOnly _db As Database
     Private _bdayRole As ULong?
@@ -19,9 +19,10 @@ Friend Class GuildStateInformation
     Private _announceMsgPl As String
     Private _announcePing As Boolean
     Private ReadOnly _userCache As Dictionary(Of ULong, GuildUserSettings)
+    Public ReadOnly Property OperationLog As OperationStatus
 
     ''' <summary>
-    ''' Gets a list of cached users. Use sparingly.
+    ''' Gets a list of cached registered user information.
     ''' </summary>
     Public ReadOnly Property Users As IEnumerable(Of GuildUserSettings)
         Get
@@ -115,6 +116,9 @@ Friend Class GuildStateInformation
     ' Called by LoadSettingsAsync. Double-check ordinals when changes are made.
     Private Sub New(reader As DbDataReader, dbconfig As Database)
         _db = dbconfig
+
+        OperationLog = New OperationStatus()
+
         GuildId = CULng(reader.GetInt64(0))
         ' Weird: if using a ternary operator with a ULong?, Nothing resolves to 0 despite Option Strict On.
         If Not reader.IsDBNull(1) Then

BirthdayBot/Diagnostics/DiagnosticCommands.vb

@@ -0,0 +1,75 @@
+Imports Discord.WebSocket
+Imports Discord.Webhook
+Imports System.Text
+''' <summary>
+''' Implements the command used by global bot moderators to get operation info for each guild.
+''' </summary>
+Class DiagnosticCommands
+    Inherits CommandsCommon
+
+    Private ReadOnly _webhook As DiscordWebhookClient
+    Private ReadOnly _diagChannel As ULong
+
+    Sub New(inst As BirthdayBot, db As Configuration)
+        MyBase.New(inst, db)
+
+        _webhook = New DiscordWebhookClient(db.LogWebhook)
+        _diagChannel = db.DiagnosticChannel
+    End Sub
+
+    Public Overrides ReadOnly Property Commands As IEnumerable(Of (String, CommandHandler))
+        Get
+            Return New List(Of (String, CommandHandler)) From {
+                ("diag", AddressOf CmdDiag),
+                ("checkme", AddressOf CmdCheckme)
+            }
+        End Get
+    End Property
+
+    ' Dumps all known guild information to the given webhook
+    Private Async Function CmdDiag(param As String(), reqChannel As SocketTextChannel, reqUser As SocketGuildUser) As Task
+        ' Ignore if not in the correct channel
+        If reqChannel.Id <> _diagChannel Then Return
+
+        ' Requires two parameters: (cmd) (guild id)
+        If param.Length <> 2 Then
+            Await reqChannel.SendMessageAsync(":x: Usage: (command) (guild ID)")
+            Return
+        End If
+
+        Dim rgid As ULong
+        If Not ULong.TryParse(param(1), rgid) Then
+            Await reqChannel.SendMessageAsync(":x: Cannot parse numeric guild ID")
+            Return
+        End If
+
+        Dim guild = Instance.DiscordClient.GetGuild(rgid)
+        If guild Is Nothing Then
+            Await reqChannel.SendMessageAsync(":x: Guild is not known to the bot")
+        End If
+
+        Dim gi = Instance.GuildCache(rgid)
+        If gi Is Nothing Then
+            Await reqChannel.SendMessageAsync(":x: Guild is known, but information is not available.")
+        End If
+
+        Await reqChannel.SendMessageAsync(":white_check_mark: Compiling info and sending to webhook.")
+
+        Dim report As New StringBuilder
+        report.AppendLine("=-=-=-=-GUILD INFORMATION-=-=-=-=")
+        ' TODO dump config info
+        report.AppendLine($"{guild.Id}: {guild.Name}")
+        report.AppendLine($"User count: {guild.Users.Count}")
+        report.AppendLine("---")
+        SyncLock gi.OperationLog
+            report.Append(gi.OperationLog.GetDiagStrings())
+        End SyncLock
+        report.AppendLine("**Note**: Full stack traces for captured exceptions are printed to console.")
+
+        Await _webhook.SendMessageAsync(report.ToString())
+    End Function
+
+    Private Async Function CmdCheckme(param As String(), reqChannel As SocketTextChannel, reqUser As SocketGuildUser) As Task
+        Await _webhook.SendMessageAsync($"{reqUser.Username}#{reqUser.Discriminator}: {reqChannel.Guild.Id} checkme")
+    End Function
+End Class

BirthdayBot/Diagnostics/OperationInfo.vb

@@ -0,0 +1,37 @@
+''' <summary>
+''' Information regarding a single type of operation.
+''' </summary>
+Class OperationInfo
+    ''' <summary>
+    ''' The time in which the respective operation was attempted.
+    ''' </summary>
+    ReadOnly Property Timestamp As DateTimeOffset
+    ''' <summary>
+    ''' Any exception encountered during the respective operation.
+    ''' </summary>
+    ''' <returns>Nothing/null if the previous given operation was a success.</returns>
+    ReadOnly Property Exception As Exception
+
+    ''' <summary>
+    ''' Creates an instance containing a success status.
+    ''' </summary>
+    Sub New()
+        Timestamp = DateTimeOffset.UtcNow
+    End Sub
+
+    ''' <summary>
+    ''' Creates an instance containing a captured exception
+    ''' </summary>
+    Sub New(ex As Exception)
+        Me.New()
+        Exception = ex
+    End Sub
+
+    ''' <summary>
+    ''' Creates an instance containing a custom error message
+    ''' </summary>
+    Sub New(message As String)
+        Me.New()
+        Exception = New Exception(message)
+    End Sub
+End Class

BirthdayBot/Diagnostics/OperationStatus.vb

@@ -0,0 +1,49 @@
+Imports System.Text
+''' <summary>
+''' Holds information regarding previous operations done on a guild and their most recent success/error status.
+''' </summary>
+Class OperationStatus
+    Private ReadOnly _log As New Dictionary(Of OperationType, OperationInfo)
+
+    Default Public Property Item(otype As OperationType) As OperationInfo
+        Get
+            Dim o As OperationInfo = Nothing
+            If Not _log.TryGetValue(otype, o) Then
+                Return Nothing
+            End If
+            Return o
+        End Get
+        Set(value As OperationInfo)
+            If value Is Nothing Then
+                _log.Remove(otype)
+            Else
+                _log(otype) = value
+            End If
+        End Set
+    End Property
+
+    ''' <summary>
+    ''' Prepares known information in a displayable format.
+    ''' </summary>
+    Public Function GetDiagStrings() As String
+        Dim report As New StringBuilder
+        For Each otype As OperationType In [Enum].GetValues(GetType(OperationType))
+            Dim prefix = $"`{[Enum].GetName(GetType(OperationType), otype)}`: "
+
+            Dim info = Item(otype)
+            If info Is Nothing Then
+                report.AppendLine(prefix + "No data")
+                Continue For
+            End If
+            prefix += info.Timestamp.ToString("u") + " "
+
+            If info.Exception Is Nothing Then
+                report.AppendLine(prefix + "Success")
+            Else
+                Log("OperationStatus", prefix + info.Exception.ToString())
+                report.AppendLine(prefix + info.Exception.Message)
+            End If
+        Next
+        Return report.ToString()
+    End Function
+End Class

BirthdayBot/Diagnostics/OperationType.vb

@@ -0,0 +1,5 @@
+Enum OperationType
+    BirthdayRole
+    BirthdayAnnounce
+    CommandDispatch
+End Enum