[FA-9] Need to add persistence layer

FictionArchive.Service.SchedulerService/Dockerfile

@@ -0,0 +1,23 @@
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
+USER $APP_UID
+WORKDIR /app
+EXPOSE 8080
+EXPOSE 8081
+
+FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+ARG BUILD_CONFIGURATION=Release
+WORKDIR /src
+COPY ["FictionArchive.Service.SchedulerService/FictionArchive.Service.SchedulerService.csproj", "FictionArchive.Service.SchedulerService/"]
+RUN dotnet restore "FictionArchive.Service.SchedulerService/FictionArchive.Service.SchedulerService.csproj"
+COPY . .
+WORKDIR "/src/FictionArchive.Service.SchedulerService"
+RUN dotnet build "./FictionArchive.Service.SchedulerService.csproj" -c $BUILD_CONFIGURATION -o /app/build
+
+FROM build AS publish
+ARG BUILD_CONFIGURATION=Release
+RUN dotnet publish "./FictionArchive.Service.SchedulerService.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+
+FROM base AS final
+WORKDIR /app
+COPY --from=publish /app/publish .
+ENTRYPOINT ["dotnet", "FictionArchive.Service.SchedulerService.dll"]

FictionArchive.Service.SchedulerService/FictionArchive.Service.SchedulerService.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <Content Include="..\.dockerignore">
+        <Link>.dockerignore</Link>
+      </Content>
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\FictionArchive.Service.Shared\FictionArchive.Service.Shared.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <PackageReference Include="Quartz" Version="3.15.1" />
+      <PackageReference Include="Quartz.AspNetCore" Version="3.15.1" />
+      <PackageReference Include="Quartz.Extensions.DependencyInjection" Version="3.15.1" />
+    </ItemGroup>
+
+</Project>

FictionArchive.Service.SchedulerService/GraphQL/Mutation.cs

@@ -0,0 +1,35 @@
+using System.Data;
+using FictionArchive.Service.SchedulerService.Models;
+using FictionArchive.Service.SchedulerService.Services;
+using HotChocolate.Types;
+using Quartz;
+
+namespace FictionArchive.Service.SchedulerService.GraphQL;
+
+public class Mutation
+{
+    [Error<DuplicateNameException>]
+    [Error<FormatException>]
+    public async Task<SchedulerJob> ScheduleEventJob(string key, string description, string eventType, string eventData, string cronSchedule, JobManagerService jobManager)
+    {
+        return await jobManager.ScheduleEventJob(key, description, eventType, eventData, cronSchedule);
+    }
+
+    [Error<JobPersistenceException>]
+    public async Task<bool> RunJob(string jobKey, JobManagerService jobManager)
+    {
+        return await jobManager.TriggerJob(jobKey);
+    }
+
+    [Error<KeyNotFoundException>]
+    public async Task<bool> DeleteJob(string jobKey, JobManagerService jobManager)
+    {
+        bool deleted = await jobManager.DeleteJob(jobKey);
+        if (!deleted)
+        {
+            throw new KeyNotFoundException($"Job with key {jobKey} was not found");
+        }
+
+        return true;
+    }
+}

FictionArchive.Service.SchedulerService/GraphQL/Query.cs

@@ -0,0 +1,15 @@
+using FictionArchive.Service.SchedulerService.Models;
+using FictionArchive.Service.SchedulerService.Services;
+using HotChocolate;
+using Quartz;
+using Quartz.Impl.Matchers;
+
+namespace FictionArchive.Service.SchedulerService.GraphQL;
+
+public class Query
+{
+    public async Task<IEnumerable<SchedulerJob>> GetJobs(JobManagerService jobManager)
+    {
+        return await jobManager.GetScheduledJobs();
+    }
+}

FictionArchive.Service.SchedulerService/Models/JobTemplates/EventJobTemplate.cs

@@ -0,0 +1,35 @@
+using FictionArchive.Service.Shared.Services.EventBus;
+using Newtonsoft.Json;
+using Quartz;
+
+namespace FictionArchive.Service.SchedulerService.Models.JobTemplates;
+
+public class EventJobTemplate : IJob
+{
+    private readonly IEventBus _eventBus;
+    private readonly ILogger<EventJobTemplate> _logger;
+
+    public const string EventTypeParameter = "RoutingKey";
+    public const string EventDataParameter = "MessageData";
+    
+    public EventJobTemplate(IEventBus eventBus, ILogger<EventJobTemplate> logger)
+    {
+        _eventBus = eventBus;
+        _logger = logger;
+    }
+    
+    public async Task Execute(IJobExecutionContext context)
+    {
+        try
+        {
+            var eventData = context.MergedJobDataMap.GetString(EventDataParameter);
+            var eventType = context.MergedJobDataMap.GetString(EventTypeParameter);
+            var eventObject = JsonConvert.DeserializeObject(eventData);
+            await _eventBus.Publish(eventObject, eventType);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "An error occurred while running an event job.");
+        }
+    }
+}

FictionArchive.Service.SchedulerService/Models/SchedulerJob.cs

@@ -0,0 +1,12 @@
+using Quartz;
+
+namespace FictionArchive.Service.SchedulerService.Models;
+
+public class SchedulerJob
+{
+    public JobKey JobKey { get; set; }
+    public string Description { get; set; }
+    public string JobTypeName { get; set; }
+    public List<string> CronSchedule { get; set; }
+    public Dictionary<string, string> JobData { get; set; }
+}

FictionArchive.Service.SchedulerService/Program.cs

@@ -0,0 +1,52 @@
+using FictionArchive.Service.SchedulerService.GraphQL;
+using FictionArchive.Service.SchedulerService.Services;
+using FictionArchive.Service.Shared.Extensions;
+using FictionArchive.Service.Shared.Services.EventBus.Implementations;
+using Quartz;
+
+namespace FictionArchive.Service.SchedulerService;
+
+public class Program
+{
+    public static void Main(string[] args)
+    {
+        var builder = WebApplication.CreateBuilder(args);
+        
+        // Services
+        builder.Services.AddDefaultGraphQl<Query, Mutation>();
+        builder.Services.AddHealthChecks();
+        builder.Services.AddTransient<JobManagerService>();
+        
+        #region Event Bus
+
+        builder.Services.AddRabbitMQ(opt =>
+        {
+            builder.Configuration.GetSection("RabbitMQ").Bind(opt);
+        });
+        
+        #endregion
+        
+        #region Quartz
+
+        builder.Services.AddQuartz(opt =>
+        {
+            opt.UseMicrosoftDependencyInjectionJobFactory();
+        });
+        builder.Services.AddQuartzHostedService(opt =>
+        {
+            opt.WaitForJobsToComplete = true;
+        });
+        
+        #endregion
+        
+        var app = builder.Build();
+
+        app.UseHttpsRedirection();
+
+        app.MapHealthChecks("/healthz");
+        
+        app.MapGraphQL();
+        
+        app.Run();
+    }
+}

FictionArchive.Service.SchedulerService/Properties/launchSettings.json

@@ -0,0 +1,39 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:61312",
+      "sslPort": 44365
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "http://localhost:5213",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "graphql",
+      "applicationUrl": "https://localhost:7145;http://localhost:5213",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

FictionArchive.Service.SchedulerService/Services/JobManagerService.cs

@@ -0,0 +1,99 @@
+using System.Data;
+using FictionArchive.Service.SchedulerService.Models;
+using FictionArchive.Service.SchedulerService.Models.JobTemplates;
+using FictionArchive.Service.Shared.Services.EventBus;
+using Quartz;
+using Quartz.Impl.Matchers;
+
+namespace FictionArchive.Service.SchedulerService.Services;
+
+public class JobManagerService
+{
+    private readonly ILogger<JobManagerService> _logger;
+    private readonly ISchedulerFactory _schedulerFactory;
+
+    public JobManagerService(ILogger<JobManagerService> logger, ISchedulerFactory schedulerFactory)
+    {
+        _logger = logger;
+        _schedulerFactory = schedulerFactory;
+    }
+
+    public async Task<List<SchedulerJob>> GetScheduledJobs()
+    {
+        var scheduler = await _schedulerFactory.GetScheduler();
+        var groups = await scheduler.GetJobGroupNames();
+        var result = new List<(IJobDetail Job, IReadOnlyCollection<ITrigger> Triggers)>();
+
+        foreach (var group in groups)
+        {
+            var jobKeys = await scheduler.GetJobKeys(GroupMatcher<JobKey>.GroupEquals(group));
+            foreach (var jobKey in jobKeys)
+            {
+                var jobDetail = await scheduler.GetJobDetail(jobKey);
+                var triggers = await scheduler.GetTriggersOfJob(jobKey);
+        
+                result.Add((jobDetail, triggers));
+            }
+        }
+        
+        return result.Select(tuple => new SchedulerJob()
+        {
+            JobKey = tuple.Job.Key,
+            Description = tuple.Job.Description,
+            JobTypeName = tuple.Job.JobType.FullName,
+            JobData = tuple.Job.JobDataMap.ToDictionary(kv => kv.Key, kv => kv.Value.ToString()),
+            CronSchedule = tuple.Triggers.Where(trigger => trigger is ICronTrigger).Select(trigger => (trigger as ICronTrigger).CronExpressionString).ToList()
+        }).ToList();
+    }
+
+    public async Task<SchedulerJob> ScheduleEventJob(string? jobKey, string? description, string eventType, string eventData, string cronSchedule)
+    {
+        var scheduler = await _schedulerFactory.GetScheduler();
+
+        if (await scheduler.GetJobDetail(new JobKey(jobKey)) != null)
+        {
+            throw new DuplicateNameException("A job with the same key already exists.");
+        }
+
+        jobKey ??= Guid.NewGuid().ToString();
+        var jobData = new JobDataMap
+        {
+            { EventJobTemplate.EventTypeParameter, eventType },
+            { EventJobTemplate.EventDataParameter, eventData }
+        };
+        var job = JobBuilder.Create<EventJobTemplate>()
+            .WithIdentity(jobKey)
+            .WithDescription(description ?? $"Fires off an event on a set schedule")
+            .SetJobData(jobData)
+            .Build();
+        var trigger = TriggerBuilder.Create()
+            .WithIdentity(jobKey)
+            .WithCronSchedule(cronSchedule)
+            .StartNow()
+            .Build();
+
+        await scheduler.ScheduleJob(job, trigger);
+
+        return new SchedulerJob()
+        {
+            CronSchedule = new List<string> { cronSchedule },
+            Description = description,
+            JobKey = new JobKey(jobKey),
+            JobTypeName = typeof(EventJobTemplate).FullName,
+            JobData = jobData.ToDictionary(kv => kv.Key, kv => kv.Value.ToString())
+        };
+    }
+
+    public async Task<bool> TriggerJob(string jobKey)
+    {
+        var scheduler = await _schedulerFactory.GetScheduler();
+        await scheduler.TriggerJob(new JobKey(jobKey));
+        return true;
+    }
+
+    public async Task<bool> DeleteJob(string jobKey)
+    {
+        var scheduler = await _schedulerFactory.GetScheduler();
+        return await scheduler.DeleteJob(new JobKey(jobKey));
+    }
+}

FictionArchive.Service.SchedulerService/appsettings.Development.json

@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

FictionArchive.Service.SchedulerService/appsettings.json

@@ -0,0 +1,13 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "RabbitMQ": {
+    "ConnectionString": "amqp://localhost",
+    "ClientIdentifier": "SchedulerService"
+  },
+  "AllowedHosts": "*"
+}

FictionArchive.Service.Shared/Extensions/GraphQLExtensions.cs

@@ -13,6 +13,7 @@ public static class GraphQLExtensions
                 .AddQueryType<TQuery>()
                 .AddMutationType<TMutation>()
                 .AddDiagnosticEventListener<ErrorEventListener>()
+                .AddErrorFilter<LoggingErrorFilter>()
                 .AddType<UnsignedIntType>()
                 .AddType<InstantType>()
                 .AddMutationConventions(applyToAllMutations: true)

FictionArchive.Service.Shared/Services/EventBus/IEventBus.cs

@@ -3,4 +3,5 @@ namespace FictionArchive.Service.Shared.Services.EventBus;
 public interface IEventBus
 {
     Task Publish<TEvent>(TEvent integrationEvent) where TEvent : IntegrationEvent;
+    Task Publish(object integrationEvent, string eventType);
 }

FictionArchive.Service.Shared/Services/EventBus/Implementations/RabbitMQEventBus.cs

@@ -36,15 +36,20 @@ public class RabbitMQEventBus : IEventBus, IHostedService
     public async Task Publish<TEvent>(TEvent integrationEvent) where TEvent : IntegrationEvent
     {
         var routingKey = typeof(TEvent).Name;
-        var channel = await _connectionProvider.GetDefaultChannelAsync();
         
         // Set integration event values
         integrationEvent.CreatedAt = Instant.FromDateTimeUtc(DateTime.UtcNow);
         integrationEvent.EventId = Guid.NewGuid();
         
+        await Publish(integrationEvent, routingKey);
+    }
+
+    public async Task Publish(object integrationEvent, string eventType)
+    {
+        var channel = await _connectionProvider.GetDefaultChannelAsync();
         var body = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(integrationEvent));
-        await channel.BasicPublishAsync(ExchangeName, routingKey, true, body);
+        await channel.BasicPublishAsync(ExchangeName, eventType, true, body);
-        _logger.LogInformation("Published event {EventName}", routingKey);
+        _logger.LogInformation("Published event {EventName}", eventType);
     }
 
     public async Task StartAsync(CancellationToken cancellationToken)

FictionArchive.Service.Shared/Services/GraphQL/LoggingErrorFilter.cs

@@ -0,0 +1,23 @@
+using Microsoft.Extensions.Logging;
+
+namespace FictionArchive.Service.Shared.Services.GraphQL;
+
+public class LoggingErrorFilter : IErrorFilter
+{
+    private readonly ILogger<LoggingErrorFilter> _logger;
+
+    public LoggingErrorFilter(ILogger<LoggingErrorFilter> logger)
+    {
+        _logger = logger;
+    }
+
+    public IError OnError(IError error)
+    {
+        if (error.Exception != null)
+        {
+            _logger.LogError(error.Exception, "Unexpected GraphQL error occurred");
+        }
+
+        return error;
+    }
+}

FictionArchive.sln

@@ -10,6 +10,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FictionArchive.Service.Tran
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FictionArchive.Service.Shared", "FictionArchive.Service.Shared\FictionArchive.Service.Shared.csproj", "{82638874-304C-43E6-8EFA-8AD4C41C4435}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FictionArchive.Service.SchedulerService", "FictionArchive.Service.SchedulerService\FictionArchive.Service.SchedulerService.csproj", "{6813A8AD-A071-4F86-B227-BC4A5BCD7F3C}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -36,5 +38,9 @@ Global
 		{82638874-304C-43E6-8EFA-8AD4C41C4435}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{82638874-304C-43E6-8EFA-8AD4C41C4435}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{82638874-304C-43E6-8EFA-8AD4C41C4435}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6813A8AD-A071-4F86-B227-BC4A5BCD7F3C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6813A8AD-A071-4F86-B227-BC4A5BCD7F3C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6813A8AD-A071-4F86-B227-BC4A5BCD7F3C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6813A8AD-A071-4F86-B227-BC4A5BCD7F3C}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal