PluralKit/PluralKit.Bot/Services/PeriodicStatCollector.cs
2019-12-22 12:50:47 +01:00

88 lines
3.7 KiB
C#

using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using App.Metrics;
using Discord;
using Discord.WebSocket;
using NodaTime.Extensions;
using PluralKit.Core;
using Serilog;
namespace PluralKit.Bot
{
public class PeriodicStatCollector
{
private DiscordShardedClient _client;
private IMetrics _metrics;
private CpuStatService _cpu;
private IDataStore _data;
private WebhookCacheService _webhookCache;
private DbConnectionCountHolder _countHolder;
private ILogger _logger;
public PeriodicStatCollector(IDiscordClient client, IMetrics metrics, ILogger logger, WebhookCacheService webhookCache, DbConnectionCountHolder countHolder, IDataStore data, CpuStatService cpu)
{
_client = (DiscordShardedClient) client;
_metrics = metrics;
_webhookCache = webhookCache;
_countHolder = countHolder;
_data = data;
_cpu = cpu;
_logger = logger.ForContext<PeriodicStatCollector>();
}
public async Task CollectStats()
{
var stopwatch = new Stopwatch();
stopwatch.Start();
// Aggregate guild/channel stats
_metrics.Measure.Gauge.SetValue(BotMetrics.Guilds, _client.Guilds.Count);
_metrics.Measure.Gauge.SetValue(BotMetrics.Channels, _client.Guilds.Sum(g => g.TextChannels.Count));
_metrics.Measure.Gauge.SetValue(BotMetrics.ShardsConnected, _client.Shards.Count(shard => shard.ConnectionState == ConnectionState.Connected));
// Aggregate member stats
var usersKnown = new HashSet<ulong>();
var usersOnline = new HashSet<ulong>();
foreach (var guild in _client.Guilds)
foreach (var user in guild.Users)
{
usersKnown.Add(user.Id);
if (user.Status == UserStatus.Online) usersOnline.Add(user.Id);
}
_metrics.Measure.Gauge.SetValue(BotMetrics.MembersTotal, usersKnown.Count);
_metrics.Measure.Gauge.SetValue(BotMetrics.MembersOnline, usersOnline.Count);
// Aggregate DB stats
_metrics.Measure.Gauge.SetValue(CoreMetrics.SystemCount, await _data.GetTotalSystems());
_metrics.Measure.Gauge.SetValue(CoreMetrics.MemberCount, await _data.GetTotalMembers());
_metrics.Measure.Gauge.SetValue(CoreMetrics.SwitchCount, await _data.GetTotalSwitches());
_metrics.Measure.Gauge.SetValue(CoreMetrics.MessageCount, await _data.GetTotalMessages());
// Process info
var process = Process.GetCurrentProcess();
_metrics.Measure.Gauge.SetValue(CoreMetrics.ProcessPhysicalMemory, process.WorkingSet64);
_metrics.Measure.Gauge.SetValue(CoreMetrics.ProcessVirtualMemory, process.VirtualMemorySize64);
_metrics.Measure.Gauge.SetValue(CoreMetrics.ProcessPrivateMemory, process.PrivateMemorySize64);
_metrics.Measure.Gauge.SetValue(CoreMetrics.ProcessThreads, process.Threads.Count);
_metrics.Measure.Gauge.SetValue(CoreMetrics.ProcessHandles, process.HandleCount);
_metrics.Measure.Gauge.SetValue(CoreMetrics.CpuUsage, await _cpu.EstimateCpuUsage());
// Database info
_metrics.Measure.Gauge.SetValue(CoreMetrics.DatabaseConnections, _countHolder.ConnectionCount);
// Other shiz
_metrics.Measure.Gauge.SetValue(BotMetrics.WebhookCacheSize, _webhookCache.CacheSize);
stopwatch.Stop();
_logger.Information("Updated metrics in {Time}", stopwatch.ElapsedDuration());
}
}
}