wabbajack/Wabbajack.Server/Controllers/Metrics.cs
2022-10-07 21:43:44 -06:00

178 lines
5.9 KiB
C#

using System.Reflection;
using System.Text.Json;
using Chronic.Core;
using CouchDB.Driver;
using CouchDB.Driver.Views;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using Nettle;
using Wabbajack.Common;
using Wabbajack.DTOs.ServerResponses;
using Wabbajack.Server.DataModels;
using Wabbajack.Server.DTOs;
namespace Wabbajack.BuildServer.Controllers;
[ApiController]
[Route("/metrics")]
public class MetricsController : ControllerBase
{
private static readonly Func<object, string> ReportTemplate = NettleEngine.GetCompiler().Compile(@"
<html><body>
<h2>Tar Report for {{$.key}}</h2>
<h3>Ban Status: {{$.status}}</h3>
<table>
{{each $.log }}
<tr>
<td>{{$.Timestamp}}</td>
<td>{{$.Path}}</td>
<td>{{$.Key}}</td>
</tr>
{{/each}}
</table>
</body></html>
");
private static Func<object, string> _totalListTemplate;
private readonly AppSettings _settings;
private ILogger<MetricsController> _logger;
private readonly Metrics _metricsStore;
private readonly ICouchDatabase<Metric> _db;
public MetricsController(ILogger<MetricsController> logger, Metrics metricsStore,
AppSettings settings, ICouchDatabase<Metric> db)
{
_logger = logger;
_settings = settings;
_metricsStore = metricsStore;
_db = db;
}
private static Func<object, string> TotalListTemplate
{
get
{
if (_totalListTemplate == null)
{
var resource = Assembly.GetExecutingAssembly()
.GetManifestResourceStream("Wabbajack.Server.Controllers.Templates.TotalListTemplate.html")!
.ReadAllText();
_totalListTemplate = NettleEngine.GetCompiler().Compile(resource);
}
return _totalListTemplate;
}
}
[HttpGet]
[Route("{subject}/{value}")]
public async Task<Result> LogMetricAsync(string subject, string value)
{
var date = DateTime.UtcNow;
var metricsKey = Request.Headers[_settings.MetricsKeyHeader].FirstOrDefault();
// Used in tests
if (value is "Default" or "untitled" || subject == "failed_download" || Guid.TryParse(value, out _))
return new Result {Timestamp = date};
await _db.AddAsync(new Metric
{
Timestamp = date,
Action = subject,
Subject = value,
MetricsKey = metricsKey,
UserAgent = Request.Headers.UserAgent.FirstOrDefault() ?? "<unknown>",
Ip = Request.Headers["cf-connecting-ip"].FirstOrDefault() ??
(Request.HttpContext.Connection.RemoteIpAddress?.ToString() ?? "")
});
return new Result {Timestamp = date};
}
private static byte[] EOL = {(byte)'\n'};
private static byte[] LBRACKET = {(byte)'['};
private static byte[] RBRACKET = {(byte)']'};
private static byte[] COMMA = {(byte) ','};
[HttpGet]
[Route("dump")]
public async Task GetMetrics([FromQuery] string action, [FromQuery] string from, [FromQuery] string? to, [FromQuery] string? subject)
{
throw new NotImplementedException();
}
[HttpGet]
[Route("report")]
[ResponseCache(Duration = 60 * 10, VaryByQueryKeys = new [] {"action", "from", "to"})]
public async Task GetReport([FromQuery] string action, [FromQuery] string from, [FromQuery] string? to)
{
var parser = new Parser();
to ??= "now";
var toDate = parser.Parse(to).Start!.Value.TruncateToDate();
var groupFilterStart = parser.Parse("three days ago").Start!.Value.TruncateToDate();
toDate = new DateTime(toDate.Year, toDate.Month, toDate.Day);
var prefetch = (await GetByAction(action, groupFilterStart, toDate))
.Select(d => d.Subject)
.ToHashSet();
var fromDate = parser.Parse(from).Start!.Value.TruncateToDate();
var counts = (await GetByAction(action, fromDate, toDate))
.Where(r => prefetch.Contains(r.Subject))
.ToDictionary(kv => (kv.Date, kv.Subject), kv => kv.Count);
Response.Headers.ContentType = "application/json";
var row = new Dictionary<string, object>();
Response.Body.Write(LBRACKET);
for (var d = fromDate; d <= toDate; d = d.AddDays(1))
{
row["_Timestamp"] = d;
foreach (var group in prefetch)
{
if (counts.TryGetValue((d, group), out var found))
row[group] = found;
else
row[group] = 0;
}
await JsonSerializer.SerializeAsync(Response.Body, row);
Response.Body.Write(EOL);
if (d != toDate)
Response.Body.Write(COMMA);
}
Response.Body.Write(RBRACKET);
}
private async Task<IReadOnlyList<(DateTime Date, string Subject, long Count)>> GetByAction(string action, DateTime from, DateTime to)
{
var records = await _db.GetViewAsync<object?[], long>("Indexes", "ActionDaySubject",
new CouchViewOptions<object?[]>
{
StartKey = new object?[]{action, from.Year, from.Month, from.Day, null},
EndKey = new object?[]{action, to.Year, to.Month, to.Day, new()},
Reduce = true,
GroupLevel = 10,
Group = true
});
var results = records
.Where(r => r.Key.Length >= 4 && r.Key[4] != null)
.Select(r =>
(new DateTime((int)(long)r.Key[1]!, (int)(long)r.Key[2]!, (int)(long)r.Key[3]!), (string)r.Key[4]!, r.Value));
return results.ToList();
}
public class Result
{
public DateTime Timestamp { get; set; }
}
}