CarbonAwareComputing.Hangfire 1.0.0

Suggested Alternatives

Hangfire.Community.CarbonAwareExecution

Additional Details

The package is renamed to be consistent with the Hangfire community extensions guidlines. Please move to Hangfire.Community.CarbonAwareExecution

dotnet add package CarbonAwareComputing.Hangfire --version 1.0.0                
NuGet\Install-Package CarbonAwareComputing.Hangfire -Version 1.0.0                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="CarbonAwareComputing.Hangfire" Version="1.0.0" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add CarbonAwareComputing.Hangfire --version 1.0.0                
#r "nuget: CarbonAwareComputing.Hangfire, 1.0.0"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install CarbonAwareComputing.Hangfire as a Cake Addin
#addin nuget:?package=CarbonAwareComputing.Hangfire&version=1.0.0

// Install CarbonAwareComputing.Hangfire as a Cake Tool
#tool nuget:?package=CarbonAwareComputing.Hangfire&version=1.0.0                

Carbon Aware Computing Hangfire Extension

Overview

A Hangfire extension to schedule tasks with carbon awareness in mind. The best point in time is calculated based on emission forecasts to get a window with a minimal grid carbon intensity.

Installation

CarbonAwareComputing.Hangfire is available as a NuGet package. You can install it using the NuGet Package Console window:

Install-Package CarbonAwareComputing.Hangfire

After installation add the extension to the Hangfire configuration.

builder.Services.AddHangfireCarbonAwareExecution(configuration => configuration
    .UseCarbonAwareExecution(new CarbonAwareDataProviderOpenData(), ComputingLocations.Germany)
);

Usage

There are extension to Enqueue and Schedule with WithCarbonAwarenessAsync.

Fire and Forget tasks

Setup the latest execution time and the estimated task duration. The extension will do a best effort to get a window with the estimated task duration and minimal grid carbon intensity. When no window can be detected, the task is enqueued immediately.

//use the extension methods
IBackgroundJobClient client = GetBackgroundJobClient();
await client.EnqueueWithCarbonAwarenessAsync(
    () => Console.WriteLine("Enqueue carbon aware jobs"),
    DateTimeOffset.Now + TimeSpan.FromHours(2),
    TimeSpan.FromMinutes(5));

//or use the static versions
await CarbonAwareBackgroundJob.EnqueueAsync(
    () => Console.WriteLine("Enqueue carbon aware jobs"),
    DateTimeOffset.Now + TimeSpan.FromHours(2),
    TimeSpan.FromMinutes(5));    

Delayed tasks

Setup the earliest and latest execution time and the estimated task duration. The extension will do a best effort to get a window with the estimated task duration and minimal grid carbon intensity. When no window can be detected, the task is scheduled as desired.

//use the extension methods
IBackgroundJobClient client = GetBackgroundJobClient();
await client.ScheduleWithCarbonAwarenessAsync(
    () => Console.WriteLine("Schedule carbon aware jobs"),
    DateTimeOffset.Now + TimeSpan.FromHours(2),
    TimeSpan.FromMinutes(20),
    TimeSpan.FromMinutes(30), TimeSpan.FromMinutes(5));

//or use the static versions
await CarbonAwareBackgroundJob.ScheduleAsync(
        () => Console.WriteLine("Schedule carbon aware jobs"),
        DateTimeOffset.Now + TimeSpan.FromHours(2),
        TimeSpan.FromMinutes(20),
        TimeSpan.FromMinutes(30), TimeSpan.FromMinutes(5));

Recurring tasks

Setup the maximum execution delay after planned schedule time and the estimated task duration. The extension will do a best effort to get a window with the estimated task duration and minimal grid carbon intensity. When no window can be detected, the task is scheduled as desired.

//use the extension methods
IRecurringJobManager manager = GetRecurringJobManager();
manager.AddOrUpdateCarbonAware(
    "daily", 
    () => Console.WriteLine("Hello, world!"), 
    Cron.Daily, 
    TimeSpan.FromHours(2),
    TimeSpan.FromMinutes(20));

//or use the static versions
CarbonAwareRecurringJob.AddOrUpdate(
    "daily", 
    () => Console.WriteLine("Hello, world!"), 
    Cron.Daily, TimeSpan.FromHours(2), 
    TimeSpan.FromMinutes(20));

The Hangfire Carbon Aware Extension will prevent the execution of the current instance of the recurring job. It is calculation a execution window with minimal carbon impact and the schedule that task. In the dashboard you will see the notice that the job was executed and a newly planned task.

Fallback

If your computing location is outside Europe or you need other forecasts the WattTime data provider may be useful. You need a valid WattTime account to use the data provider.

builder.Services.AddHangfireCarbonAwareExecution(configuration => configuration
    .UseCarbonAwareExecution(
        () => new CarbonAwareExecutionOptions(
            new CarbonAwareDataProviderWattTime(userName, password), 
            ComputingLocations.Germany))
        );

Extensibility

For custom forecasts or scenarios you don't want the build in provider add a own data provider. You may extend the abstract base class CarbonAwareDataProvider or use the CarbonAwareDataProviderWithCustomForecast.

Methodology

Hangfire.CarbonAwareExecution Extension make use of the Carbon Aware SDK a Green Software Foundation Project. There are some extensions to the SDK to use cached offline data sources in our fork.

The emission forecast data are uploaded periodically to a Azure Blob Storage for a given grid region and are public (e.g. for Germany https://carbonawarecomputing.blob.core.windows.net/forecasts/de.json).

For every grid region a data provider is needed:

  • Germany: The API from https://www.energy-charts.info/ are used. The data is the share of renewable energy to the total power production. The origin data source is from entso-e. The data is generated every day at 19:00+02 for the next day. After 19:00+02 the maximum forecast is next day 24:00+02.

Other data sources and regions are added soon.

Product Compatible and additional computed target framework versions.
.NET net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

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GitHub repositories

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Version Downloads Last updated
1.0.0 232 4/29/2023 1.0.0 is deprecated because it is no longer maintained.