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events project, spotify mapping, lastfm mapping, CLI reacting to db changes

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This commit is contained in:
andy 2021-12-19 18:44:03 +00:00
parent f79c7111fe
commit 67a2a322ca
26 changed files with 535 additions and 144 deletions
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104
Selector.CLI/DbWatcherService.cs
View File

@ -1,20 +1,17 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Selector.Cache;
using Selector.Model;
using IF.Lastfm.Core.Api;
using StackExchange.Redis;
using Selector.Events;
using System.Collections.Concurrent;
namespace Selector.CLI
{
@ -24,6 +21,7 @@ namespace Selector.CLI
private readonly ILogger<DbWatcherService> Logger;
private readonly IServiceProvider ServiceProvider;
private readonly UserEventBus UserEventBus;
private readonly IWatcherFactory WatcherFactory;
private readonly IWatcherCollectionFactory WatcherCollectionFactory;
@ -34,7 +32,7 @@ namespace Selector.CLI
private readonly IPublisherFactory PublisherFactory;
private readonly ICacheWriterFactory CacheWriterFactory;
private Dictionary<string, IWatcherCollection> Watchers { get; set; } = new();
private ConcurrentDictionary<string, IWatcherCollection> Watchers { get; set; } = new();
public DbWatcherService(
IWatcherFactory watcherFactory,
@ -44,6 +42,7 @@ namespace Selector.CLI
IAudioFeatureInjectorFactory audioFeatureInjectorFactory,
IPlayCounterFactory playCounterFactory,
UserEventBus userEventBus,
ILogger<DbWatcherService> logger,
IServiceProvider serviceProvider,
@ -54,6 +53,7 @@ namespace Selector.CLI
{
Logger = logger;
ServiceProvider = serviceProvider;
UserEventBus = userEventBus;
WatcherFactory = watcherFactory;
WatcherCollectionFactory = watcherCollectionFactory;
@ -71,6 +71,7 @@ namespace Selector.CLI
Logger.LogInformation("Starting database watcher service...");
var watcherIndices = await InitInstances();
AttachEventBus();
Logger.LogInformation("Starting {count} affected watcher collection(s)...", watcherIndices.Count());
StartWatcherCollections(watcherIndices);
@ -86,11 +87,21 @@ namespace Selector.CLI
foreach (var dbWatcher in db.Watcher
.Include(w => w.User)
.Where(w => !string.IsNullOrWhiteSpace(w.User.SpotifyRefreshToken)))
{
var watcherCollectionIdx = dbWatcher.UserId;
indices.Add(watcherCollectionIdx);
await InitInstance(dbWatcher);
}
return indices;
}
private async Task<IWatcherContext> InitInstance(Watcher dbWatcher)
{
Logger.LogInformation("Creating new [{type}] watcher", dbWatcher.Type);
var watcherCollectionIdx = dbWatcher.UserId;
indices.Add(watcherCollectionIdx);
if (!Watchers.ContainsKey(watcherCollectionIdx))
Watchers[watcherCollectionIdx] = WatcherCollectionFactory.Get();
@ -128,10 +139,7 @@ namespace Selector.CLI
// break;
}
watcherCollection.Add(watcher, consumers);
}
return indices;
return watcherCollection.Add(watcher, consumers);
}
private void StartWatcherCollections(IEnumerable<string> indices)
@ -160,7 +168,81 @@ namespace Selector.CLI
watcher.Stop();
}
DetachEventBus();
return Task.CompletedTask;
}
private void AttachEventBus()
{
UserEventBus.SpotifyLinkChange += SpotifyChangeCallback;
UserEventBus.LastfmCredChange += LastfmChangeCallback;
}
private void DetachEventBus()
{
UserEventBus.SpotifyLinkChange -= SpotifyChangeCallback;
UserEventBus.LastfmCredChange -= LastfmChangeCallback;
}
public async void SpotifyChangeCallback(object sender, SpotifyLinkChange change)
{
if(Watchers.ContainsKey(change.UserId))
{
Logger.LogDebug("Setting new Spotify link state for [{username}], [{}]", change.UserId, change.NewLinkState);
var watcherCollection = Watchers[change.UserId];
if(change.NewLinkState)
{
watcherCollection.Start();
}
else
{
watcherCollection.Stop();
}
}
else
{
using var scope = ServiceProvider.CreateScope();
var db = scope.ServiceProvider.GetService<ApplicationDbContext>();
var watcherEnum = db.Watcher
.Include(w => w.User)
.Where(w => w.UserId == change.UserId);
foreach (var dbWatcher in watcherEnum)
{
var context = await InitInstance(dbWatcher);
}
Watchers[change.UserId].Start();
Logger.LogDebug("Started {} watchers for [{username}]", watcherEnum.Count(), change.UserId);
}
}
public void LastfmChangeCallback(object sender, LastfmChange change)
{
if (Watchers.ContainsKey(change.UserId))
{
Logger.LogDebug("Setting new username for [{}], [{}]", change.UserId, change.NewUsername);
var watcherCollection = Watchers[change.UserId];
foreach(var watcher in watcherCollection.Consumers)
{
if(watcher is PlayCounter counter)
{
counter.Credentials.Username = change.NewUsername;
}
}
}
else
{
Logger.LogDebug("No watchers running for [{username}], skipping Spotify event", change.UserId);
}
}
}
}

28
Selector.CLI/Program.cs
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@ -11,9 +11,7 @@ using Selector.Extensions;
using Selector.Model;
using Selector.Cache;
using Selector.Cache.Extensions;
using IF.Lastfm.Core.Api;
using Selector.Model.Extensions;
using Selector.Events;
namespace Selector.CLI
{
@ -114,20 +112,26 @@ namespace Selector.CLI
}
services.AddWatcher();
services.AddEvents();
services.AddSpotify();
if (config.RedisOptions.Enabled) {
ConfigureLastFm(config, services);
ConfigureDb(config, services);
ConfigureEqual(config, services);
if (config.RedisOptions.Enabled)
{
Console.WriteLine("> Adding Redis...");
services.AddRedisServices(config.RedisOptions.ConnectionString);
Console.WriteLine("> Adding cache event maps...");
services.AddTransient<IEventMapping, SpotifyLinkFromCacheMapping>();
services.AddTransient<IEventMapping, LastfmFromCacheMapping>();
Console.WriteLine("> Adding caching Spotify consumers...");
services.AddCachingSpotify();
}
ConfigureLastFm(config, services);
ConfigureDb(config, services);
if (config.RedisOptions.Enabled)
services.AddRedisServices(config.RedisOptions.ConnectionString);
ConfigureEqual(config, services);
// HOSTED SERVICES
if (config.WatcherOptions.Enabled)
{

1
Selector.CLI/Selector.CLI.csproj
View File

@ -25,6 +25,7 @@
<ProjectReference Include="..\Selector\Selector.csproj" />
<ProjectReference Include="..\Selector.Model\Selector.Model.csproj" />
<ProjectReference Include="..\Selector.Cache\Selector.Cache.csproj" />
<ProjectReference Include="..\Selector.Event\Selector.Event.csproj" />
</ItemGroup>
<ItemGroup>

4
Selector.Web/Services/CacheMappings/ICacheEventMapping.cs → Selector.Event/CacheMappings/IEventMapping.cs
View File

@ -4,9 +4,9 @@ using System.Threading.Tasks;
using Microsoft.AspNetCore.SignalR;
using StackExchange.Redis;
namespace Selector.Web.Service
namespace Selector.Events
{
public interface ICacheEventMapping
public interface IEventMapping
{
public Task ConstructMapping();
}

87
Selector.Event/CacheMappings/LastfmMapping.cs Normal file
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@ -0,0 +1,87 @@
using System.Text.Json;
using Microsoft.Extensions.Logging;
using StackExchange.Redis;
using Selector.Cache;
namespace Selector.Events
{
public class LastfmChange
{
public string UserId { get; set; }
public string PreviousUsername { get; set; }
public string NewUsername { get; set; }
}
public class LastfmFromCacheMapping : IEventMapping
{
private readonly ILogger<LastfmFromCacheMapping> Logger;
private readonly ISubscriber Subscriber;
private readonly UserEventBus UserEvent;
public LastfmFromCacheMapping(ILogger<LastfmFromCacheMapping> logger,
ISubscriber subscriber,
UserEventBus userEvent)
{
Logger = logger;
Subscriber = subscriber;
UserEvent = userEvent;
}
public async Task ConstructMapping()
{
Logger.LogDebug("Forming Last.fm username event mapping FROM cache TO event bus");
(await Subscriber.SubscribeAsync(Key.AllUserLastfm)).OnMessage(message => {
try{
var userId = Key.Param(message.Channel);
var deserialised = JsonSerializer.Deserialize<LastfmChange>(message.Message);
Logger.LogDebug("Received new Last.fm username event for [{userId}]", deserialised.UserId);
if (!userId.Equals(deserialised.UserId))
{
Logger.LogWarning("Serialised user ID [{}] does not match cache channel [{}]", userId, deserialised.UserId);
}
UserEvent.OnLastfmCredChange(this, deserialised);
}
catch(Exception e)
{
Logger.LogError(e, "Error parsing Last.fm username event");
}
});
}
}
public class LastfmToCacheMapping : IEventMapping
{
private readonly ILogger<LastfmToCacheMapping> Logger;
private readonly ISubscriber Subscriber;
private readonly UserEventBus UserEvent;
public LastfmToCacheMapping(ILogger<LastfmToCacheMapping> logger,
ISubscriber subscriber,
UserEventBus userEvent)
{
Logger = logger;
Subscriber = subscriber;
UserEvent = userEvent;
}
public Task ConstructMapping()
{
Logger.LogDebug("Forming Last.fm username event mapping TO cache FROM event bus");
UserEvent.LastfmCredChange += async (o, e) =>
{
var payload = JsonSerializer.Serialize(e);
await Subscriber.PublishAsync(Key.UserLastfm(e.UserId), payload);
};
return Task.CompletedTask;
}
}
}

14
Selector.Web/Services/CacheMappings/NowPlayingCacheMapping.cs → Selector.Event/CacheMappings/NowPlayingMapping.cs
View File

@ -1,25 +1,19 @@
using System;
using System.Text.Json;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.SignalR;
using Microsoft.Extensions.Logging;
using StackExchange.Redis;
using Selector.Web.Hubs;
using Selector.Cache;
using Selector.Model.Events;
namespace Selector.Web.Service
namespace Selector.Events
{
public class NowPlayingCacheMapping : ICacheEventMapping
public class NowPlayingFromCacheMapping : IEventMapping
{
private readonly ILogger<NowPlayingCacheMapping> Logger;
private readonly ILogger<NowPlayingFromCacheMapping> Logger;
private readonly ISubscriber Subscriber;
private readonly UserEventBus UserEvent;
public NowPlayingCacheMapping(ILogger<NowPlayingCacheMapping> logger,
public NowPlayingFromCacheMapping(ILogger<NowPlayingFromCacheMapping> logger,
ISubscriber subscriber,
UserEventBus userEvent)
{

91
Selector.Event/CacheMappings/SpotifyMapping.cs Normal file
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@ -0,0 +1,91 @@
using System.Text.Json;
using Microsoft.Extensions.Logging;
using StackExchange.Redis;
using Selector.Cache;
namespace Selector.Events
{
public class SpotifyLinkChange
{
public string UserId { get; set; }
public bool PreviousLinkState { get; set; }
public bool NewLinkState { get; set; }
}
public class SpotifyLinkFromCacheMapping : IEventMapping
{
private readonly ILogger<SpotifyLinkFromCacheMapping> Logger;
private readonly ISubscriber Subscriber;
private readonly UserEventBus UserEvent;
public SpotifyLinkFromCacheMapping(ILogger<SpotifyLinkFromCacheMapping> logger,
ISubscriber subscriber,
UserEventBus userEvent)
{
Logger = logger;
Subscriber = subscriber;
UserEvent = userEvent;
}
public async Task ConstructMapping()
{
Logger.LogDebug("Forming Spotify link event mapping FROM cache TO event bus");
(await Subscriber.SubscribeAsync(Key.AllUserSpotify)).OnMessage(message => {
try{
var userId = Key.Param(message.Channel);
var deserialised = JsonSerializer.Deserialize<SpotifyLinkChange>(message.Message);
Logger.LogDebug("Received new Spotify link event for [{userId}]", deserialised.UserId);
if (!userId.Equals(deserialised.UserId))
{
Logger.LogWarning("Serialised user ID [{}] does not match cache channel [{}]", userId, deserialised.UserId);
}
UserEvent.OnSpotifyLinkChange(this, deserialised);
}
catch(TaskCanceledException)
{
Logger.LogDebug("Task Cancelled");
}
catch(Exception e)
{
Logger.LogError(e, "Error parsing new Spotify link event");
}
});
}
}
public class SpotifyLinkToCacheMapping : IEventMapping
{
private readonly ILogger<SpotifyLinkToCacheMapping> Logger;
private readonly ISubscriber Subscriber;
private readonly UserEventBus UserEvent;
public SpotifyLinkToCacheMapping(ILogger<SpotifyLinkToCacheMapping> logger,
ISubscriber subscriber,
UserEventBus userEvent)
{
Logger = logger;
Subscriber = subscriber;
UserEvent = userEvent;
}
public Task ConstructMapping()
{
Logger.LogDebug("Forming Spotify link event mapping TO cache FROM event bus");
UserEvent.SpotifyLinkChange += async (o, e) =>
{
var payload = JsonSerializer.Serialize(e);
await Subscriber.PublishAsync(Key.UserSpotify(e.UserId), payload);
};
return Task.CompletedTask;
}
}
}

44
Selector.Event/EventMappingService.cs Normal file
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@ -0,0 +1,44 @@
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
namespace Selector.Events
{
public class EventMappingService: IHostedService
{
private readonly ILogger<EventMappingService> Logger;
private readonly IServiceScopeFactory ScopeFactory;
private readonly IEnumerable<IEventMapping> CacheEvents;
public EventMappingService(
ILogger<EventMappingService> logger,
IEnumerable<IEventMapping> mappings,
IServiceScopeFactory scopeFactory
)
{
Logger = logger;
ScopeFactory = scopeFactory;
CacheEvents = mappings;
}
public Task StartAsync(CancellationToken cancellationToken)
{
Logger.LogInformation("Starting event mapping service");
foreach (var mapping in CacheEvents)
{
mapping.ConstructMapping();
}
return Task.CompletedTask;
}
public Task StopAsync(CancellationToken cancellationToken)
{
return Task.CompletedTask;
}
}
}

24
Selector.Event/Extensions/ServiceExtensions.cs Normal file
View File

@ -0,0 +1,24 @@
using Microsoft.Extensions.DependencyInjection;
namespace Selector.Events
{
public static class ServiceExtensions
{
public static void AddEvents(this IServiceCollection services)
{
services.AddEventBus();
services.AddEventMappingAgent();
}
public static void AddEventBus(this IServiceCollection services)
{
services.AddSingleton<UserEventBus>();
services.AddSingleton<IEventBus, UserEventBus>(sp => sp.GetRequiredService<UserEventBus>());
}
public static void AddEventMappingAgent(this IServiceCollection services)
{
services.AddHostedService<EventMappingService>();
}
}
}

0
Selector/Events/IEventBus.cs → Selector.Event/IEventBus.cs
View File

14
Selector.Event/Selector.Event.csproj Normal file
View File

@ -0,0 +1,14 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\Selector\Selector.csproj" />
<ProjectReference Include="..\Selector.Model\Selector.Model.csproj" />
<ProjectReference Include="..\Selector.Cache\Selector.Cache.csproj" />
</ItemGroup>
</Project>

17
Selector.Model/Events/UserEventBus.cs → Selector.Event/UserEventBus.cs
View File

@ -4,17 +4,18 @@ using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
using Selector.Events;
namespace Selector.Model.Events
using Selector.Model;
namespace Selector.Events
{
public class UserEventBus: IEventBus
{
private readonly ILogger<UserEventBus> Logger;
public event EventHandler<ApplicationUser> UserChange;
public event EventHandler<ApplicationUser> SpotifyLinkChange;
public event EventHandler<ApplicationUser> LastfmCredChange;
public event EventHandler<SpotifyLinkChange> SpotifyLinkChange;
public event EventHandler<LastfmChange> LastfmCredChange;
public event EventHandler<(string, CurrentlyPlayingDTO)> CurrentlyPlaying;
@ -29,15 +30,15 @@ namespace Selector.Model.Events
UserChange?.Invoke(sender, args);
}
public void OnSpotifyLinkChange(object sender, ApplicationUser args)
public void OnSpotifyLinkChange(object sender, SpotifyLinkChange args)
{
Logger.LogTrace("Firing user Spotify event [{usernamne}]", args?.UserName);
Logger.LogTrace("Firing user Spotify event [{usernamne}]", args?.UserId);
SpotifyLinkChange?.Invoke(sender, args);
}
public void OnLastfmCredChange(object sender, ApplicationUser args)
public void OnLastfmCredChange(object sender, LastfmChange args)
{
Logger.LogTrace("Firing user Last.fm event [{usernamne}]", args?.UserName);
Logger.LogTrace("Firing user Last.fm event [{usernamne}]", args?.UserId);
LastfmCredChange?.Invoke(sender, args);
}

8
Selector.Model/Extensions/ServiceExtensions.cs
View File

@ -1,20 +1,12 @@
using Microsoft.AspNetCore.Authorization;
using Microsoft.Extensions.DependencyInjection;
using Selector.Events;
using Selector.Model.Authorisation;
using Selector.Model.Events;
namespace Selector.Model.Extensions
{
public static class ServiceExtensions
{
public static void AddModelEventBus(this IServiceCollection services)
{
services.AddSingleton<UserEventBus>();
services.AddSingleton<IEventBus, UserEventBus>(sp => sp.GetService<UserEventBus>());
}
public static void AddAuthorisationHandlers(this IServiceCollection services)
{
services.AddAuthorization(options =>

13
Selector.Web/Areas/Identity/Pages/Account/Manage/Lastfm.cshtml.cs
View File

@ -12,17 +12,21 @@ using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.WebUtilities;
using Selector.Model;
using Selector.Events;
namespace Selector.Web.Areas.Identity.Pages.Account.Manage
{
public partial class LastFmModel : PageModel
{
private readonly UserManager<ApplicationUser> _userManager;
private readonly UserEventBus UserEvent;
public LastFmModel(
UserManager<ApplicationUser> userManager)
UserManager<ApplicationUser> userManager,
UserEventBus userEvent)
{
_userManager = userManager;
UserEvent = userEvent;
}
[TempData]
@ -75,8 +79,15 @@ namespace Selector.Web.Areas.Identity.Pages.Account.Manage
if (Input.Username != user.LastFmUsername)
{
var oldUsername = user.LastFmUsername;
user.LastFmUsername = Input.Username?.Trim();
await _userManager.UpdateAsync(user);
UserEvent.OnLastfmCredChange(this, new LastfmChange {
UserId = user.Id,
PreviousUsername = oldUsername,
NewUsername = user.LastFmUsername
});
StatusMessage = "Username changed";
return RedirectToPage();

24
Selector.Web/Areas/Identity/Pages/Account/Manage/Spotify.cshtml.cs
View File

@ -1,21 +1,16 @@
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Text;
using System.Text.Encodings.Web;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.UI.Services;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.WebUtilities;
using Selector.Model;
using SpotifyAPI.Web;
using Microsoft.Extensions.Options;
using Microsoft.Extensions.Logging;
using SpotifyAPI.Web;
using Selector.Model;
using Selector.Events;
namespace Selector.Web.Areas.Identity.Pages.Account.Manage
{
public partial class SpotifyModel : PageModel
@ -23,16 +18,20 @@ namespace Selector.Web.Areas.Identity.Pages.Account.Manage
private readonly UserManager<ApplicationUser> _userManager;
private readonly ILogger<SpotifyModel> Logger;
private readonly RootOptions Config;
private readonly UserEventBus UserEvent;
public SpotifyModel(
UserManager<ApplicationUser> userManager,
ILogger<SpotifyModel> logger,
IOptions<RootOptions> config
IOptions<RootOptions> config,
UserEventBus userEvent
)
{
_userManager = userManager;
Logger = logger;
Config = config.Value;
UserEvent = userEvent;
}
[BindProperty]
@ -97,8 +96,6 @@ namespace Selector.Web.Areas.Identity.Pages.Account.Manage
return NotFound($"Unable to load user with ID '{_userManager.GetUserId(User)}'.");
}
// TODO: stop users Spotify-linked resources (watchers)
user.SpotifyIsLinked = false;
user.SpotifyAccessToken = null;
@ -107,6 +104,7 @@ namespace Selector.Web.Areas.Identity.Pages.Account.Manage
user.SpotifyLastRefresh = default;
await _userManager.UpdateAsync(user);
UserEvent.OnSpotifyLinkChange(this, new SpotifyLinkChange { UserId = user.Id, PreviousLinkState = true, NewLinkState = false });
StatusMessage = "Spotify Unlinked";
return RedirectToPage();

12
Selector.Web/Controller/SpotifyController.cs
View File

@ -8,10 +8,11 @@ using Microsoft.AspNetCore.Authorization;
using Microsoft.Extensions.Options;
using Microsoft.Extensions.Logging;
using Selector.Model;
using SpotifyAPI.Web;
using Selector.Events;
using Selector.Model;
namespace Selector.Web.Controller
{
@ -20,6 +21,7 @@ namespace Selector.Web.Controller
public class SpotifyController : BaseAuthController
{
private readonly RootOptions Config;
private readonly UserEventBus UserEvent;
private const string ManageSpotifyPath = "/Identity/Account/Manage/Spotify";
public SpotifyController(
@ -27,10 +29,12 @@ namespace Selector.Web.Controller
IAuthorizationService auth,
UserManager<ApplicationUser> userManager,
ILogger<UsersController> logger,
IOptions<RootOptions> config
IOptions<RootOptions> config,
UserEventBus userEvent
) : base(context, auth, userManager, logger)
{
Config = config.Value;
UserEvent = userEvent;
}
[HttpGet]
@ -76,6 +80,8 @@ namespace Selector.Web.Controller
await UserManager.UpdateAsync(user);
UserEvent.OnSpotifyLinkChange(this, new SpotifyLinkChange { UserId = user.Id, PreviousLinkState = false, NewLinkState = true });
TempData["StatusMessage"] = "Spotify Linked";
return Redirect(ManageSpotifyPath);
}

5
Selector.Web/Extensions/ServiceExtensions.cs
View File

@ -9,10 +9,7 @@ namespace Selector.Web.Extensions
public static void AddCacheHubProxy(this IServiceCollection services)
{
services.AddScoped<EventHubProxy>();
services.AddHostedService<CacheEventProxyService>();
services.AddTransient<ICacheEventMapping, NowPlayingCacheMapping>();
services.AddTransient<NowPlayingCacheMapping>();
services.AddHostedService<EventHubMappingService>();
services.AddScoped<IEventHubMapping<NowPlayingHub, INowPlayingHubClient>, NowPlayingHubMapping>();
services.AddScoped<NowPlayingHubMapping>();

1
Selector.Web/Selector.Web.csproj
View File

@ -10,6 +10,7 @@
<ProjectReference Include="..\Selector\Selector.csproj" />
<ProjectReference Include="..\Selector.Model\Selector.Model.csproj" />
<ProjectReference Include="..\Selector.Cache\Selector.Cache.csproj" />
<ProjectReference Include="..\Selector.Event\Selector.Event.csproj" />
</ItemGroup>
<ItemGroup>

23
Selector.Web/Services/CacheEventProxyService.cs → Selector.Web/Services/EventHubMappingService.cs
View File

@ -6,35 +6,27 @@ using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Selector.Events;
namespace Selector.Web.Service
{
public class CacheEventProxyService: IHostedService
public class EventHubMappingService: IHostedService
{
private readonly ILogger<CacheEventProxyService> Logger;
private readonly ILogger<EventHubMappingService> Logger;
private readonly IServiceScopeFactory ScopeFactory;
private readonly IEnumerable<ICacheEventMapping> CacheEvents;
public CacheEventProxyService(
ILogger<CacheEventProxyService> logger,
IEnumerable<ICacheEventMapping> mappings,
public EventHubMappingService(
ILogger<EventHubMappingService> logger,
IServiceScopeFactory scopeFactory
)
{
Logger = logger;
ScopeFactory = scopeFactory;
CacheEvents = mappings;
}
public Task StartAsync(CancellationToken cancellationToken)
{
Logger.LogInformation("Starting cache event proxy");
foreach (var mapping in CacheEvents)
{
mapping.ConstructMapping();
}
Logger.LogInformation("Starting hub event mapping service");
using (var scope = ScopeFactory.CreateScope())
{
@ -47,7 +39,6 @@ namespace Selector.Web.Service
public Task StopAsync(CancellationToken cancellationToken)
{
Logger.LogInformation("Stopping cache hub proxy");
return Task.CompletedTask;
}
}

2
Selector.Web/Services/EventMappings/NowPlayingHubMapping.cs
View File

@ -3,7 +3,7 @@ using Microsoft.AspNetCore.SignalR;
using Microsoft.Extensions.Logging;
using Selector.Web.Hubs;
using Selector.Model.Events;
using Selector.Events;
namespace Selector.Web.Service
{

21
Selector.Web/Startup.cs
View File

@ -11,6 +11,7 @@ using Microsoft.Extensions.Hosting;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Selector.Events;
using Selector.Web.Hubs;
using Selector.Web.Extensions;
using Selector.Extensions;
@ -93,20 +94,28 @@ namespace Selector.Web
});
services.AddAuthorisationHandlers();
services.AddModelEventBus();
if (config.RedisOptions.Enabled)
services.AddRedisServices(config.RedisOptions.ConnectionString);
services.AddEvents();
services.AddSpotify();
ConfigureLastFm(config, services);
if (config.RedisOptions.Enabled)
{
Console.WriteLine("> Adding Redis...");
services.AddRedisServices(config.RedisOptions.ConnectionString);
Console.WriteLine("> Adding cache event maps...");
services.AddTransient<IEventMapping, SpotifyLinkToCacheMapping>();
services.AddTransient<IEventMapping, LastfmToCacheMapping>();
services.AddTransient<IEventMapping, NowPlayingFromCacheMapping>();
services.AddCacheHubProxy();
Console.WriteLine("> Adding caching Spotify consumers...");
services.AddCachingSpotify();
services.AddCacheHubProxy();
}
ConfigureLastFm(config, services);
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.

14
Selector.sln
View File

@ -1,7 +1,7 @@

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 16
VisualStudioVersion = 16.0.30717.126
# Visual Studio Version 17
VisualStudioVersion = 17.0.31919.166
MinimumVisualStudioVersion = 15.0.26124.0
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Selector", "Selector\Selector.csproj", "{05B22ACE-2EA1-46AA-8483-A625B08A0D01}"
EndProject
@ -18,9 +18,11 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Selector.CLI", "Selector.CL
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Selector.Model", "Selector.Model\Selector.Model.csproj", "{B609975D-7CA6-422E-8461-E837C9EDB104}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Selector.Web", "Selector.Web\Selector.Web.csproj", "{ABC6EEBB-4C0D-45BD-8DDC-0B0304EAF34F}"
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Selector.Web", "Selector.Web\Selector.Web.csproj", "{ABC6EEBB-4C0D-45BD-8DDC-0B0304EAF34F}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Selector.Cache", "Selector.Cache\Selector.Cache.csproj", "{D8761D46-EF2B-4323-894F-E67C3EB0D0BB}"
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Selector.Cache", "Selector.Cache\Selector.Cache.csproj", "{D8761D46-EF2B-4323-894F-E67C3EB0D0BB}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Selector.Event", "Selector.Event\Selector.Event.csproj", "{C2FF1673-CB1A-43B7-A814-07BB3CB3A0D6}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
@ -52,6 +54,10 @@ Global
{D8761D46-EF2B-4323-894F-E67C3EB0D0BB}.Debug|Any CPU.Build.0 = Debug|Any CPU
{D8761D46-EF2B-4323-894F-E67C3EB0D0BB}.Release|Any CPU.ActiveCfg = Release|Any CPU
{D8761D46-EF2B-4323-894F-E67C3EB0D0BB}.Release|Any CPU.Build.0 = Release|Any CPU
{C2FF1673-CB1A-43B7-A814-07BB3CB3A0D6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{C2FF1673-CB1A-43B7-A814-07BB3CB3A0D6}.Debug|Any CPU.Build.0 = Debug|Any CPU
{C2FF1673-CB1A-43B7-A814-07BB3CB3A0D6}.Release|Any CPU.ActiveCfg = Release|Any CPU
{C2FF1673-CB1A-43B7-A814-07BB3CB3A0D6}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE

11
Selector/Consumers/PlayCounter.cs
View File

@ -8,6 +8,8 @@ using Microsoft.Extensions.Logging.Abstractions;
using SpotifyAPI.Web;
using IF.Lastfm.Core.Api;
using IF.Lastfm.Core.Objects;
using IF.Lastfm.Core.Api.Helpers;
namespace Selector
{
@ -18,7 +20,7 @@ namespace Selector
protected readonly IAlbumApi AlbumClient;
protected readonly IArtistApi ArtistClient;
protected readonly IUserApi UserClient;
protected readonly LastFmCredentials Credentials;
public readonly LastFmCredentials Credentials;
protected readonly ILogger<PlayCounter> Logger;
protected event EventHandler<PlayCount> NewPlayCount;
@ -66,6 +68,12 @@ namespace Selector
public async Task AsyncCallback(ListeningChangeEventArgs e)
{
if(Credentials is null || string.IsNullOrWhiteSpace(Credentials.Username))
{
Logger.LogDebug("No Last.fm username, skipping play count");
return;
}
if (e.Current.Item is FullTrack track)
{
Logger.LogTrace("Making Last.fm call");
@ -73,7 +81,6 @@ namespace Selector
var trackInfo = TrackClient.GetInfoAsync(track.Name, track.Artists[0].Name, username: Credentials?.Username);
var albumInfo = AlbumClient.GetInfoAsync(track.Album.Artists[0].Name, track.Album.Name, username: Credentials?.Username);
var artistInfo = ArtistClient.GetInfoAsync(track.Artists[0].Name);
// TODO: Null checking on credentials
var userInfo = UserClient.GetInfoAsync(Credentials.Username);
await Task.WhenAll(new Task[] { trackInfo, albumInfo, artistInfo, userInfo });

6
Selector/Watcher/Collection/Interfaces/IWatcherCollection.cs
View File

@ -11,13 +11,13 @@ namespace Selector
/// Add watcher to collection, will start watcher if collection is running
/// </summary>
/// <param name="watcher">New watcher</param>
public void Add(IWatcher watcher);
public IWatcherContext Add(IWatcher watcher);
/// <summary>
/// Add watcher with given consumers to collection, will start watcher if collection is running
/// </summary>
/// <param name="watcher">New watcher</param>
/// <param name="consumers">Consumers to subscribe to new watcher</param>
public void Add(IWatcher watcher, List<IConsumer> consumers);
public IWatcherContext Add(IWatcher watcher, List<IConsumer> consumers);
/// <summary>
/// Start watcher collection
@ -27,5 +27,7 @@ namespace Selector
/// Stop watcher collection
/// </summary>
public void Stop();
public IEnumerable<IConsumer> Consumers { get; }
}
}

35
Selector/Watcher/Collection/WatcherCollection.cs
View File

@ -22,6 +22,12 @@ namespace Selector
}
public int Count => Watchers.Count;
public IEnumerable<IConsumer> Consumers
=> Watchers
.SelectMany(w => w.Consumers)
.Where(t => t is not null);
public IEnumerable<Task> Tasks
=> Watchers
.Select(w => w.Task)
@ -32,17 +38,18 @@ namespace Selector
.Select(w => w.TokenSource)
.Where(t => t is not null);
public void Add(IWatcher watcher)
public IWatcherContext Add(IWatcher watcher)
{
Add(watcher, default);
return Add(watcher, default);
}
public void Add(IWatcher watcher, List<IConsumer> consumers)
public IWatcherContext Add(IWatcher watcher, List<IConsumer> consumers)
{
var context = WatcherContext.From(watcher, consumers);
if (IsRunning) context.Start();
Watchers.Add(context);
return context;
}
public IEnumerable<WatcherContext> Running
@ -50,6 +57,8 @@ namespace Selector
public void Start()
{
if (IsRunning) return;
Logger.LogDebug($"Starting {Count} watcher(s)");
foreach(var watcher in Watchers)
{
@ -59,6 +68,10 @@ namespace Selector
}
public void Stop()
{
if (!IsRunning) return;
try
{
Logger.LogDebug($"Stopping {Count} watcher(s)");
foreach (var watcher in Watchers)
@ -68,6 +81,22 @@ namespace Selector
Task.WaitAll(Tasks.ToArray());
IsRunning = false;
}
catch (TaskCanceledException)
{
Logger.LogTrace("Caught task cancelled exception");
}
catch (AggregateException ex)
{
if(ex.InnerException is TaskCanceledException || ex.InnerExceptions.Any(e => e is TaskCanceledException))
{
Logger.LogTrace("Caught task cancelled exception");
}
else
{
throw ex;
}
}
}
public void Dispose()
{

2
Selector/Watcher/Context/WatcherContext.cs
View File

@ -10,7 +10,7 @@ namespace Selector
public class WatcherContext: IDisposable, IWatcherContext
{
public IWatcher Watcher { get; set; }
private List<IConsumer> Consumers { get; set; } = new();
public List<IConsumer> Consumers { get; private set; } = new();
public bool IsRunning { get; private set; }
/// <summary>
/// Reference to Watcher.Watch() task when running