https://github.com/davidfowl/waitfordependenciesaspire

https://github.com/davidfowl/waitfordependenciesaspire

Last synced: 6 days ago
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• Host: GitHub
• URL: https://github.com/davidfowl/waitfordependenciesaspire
• Owner: davidfowl
• License: mit
• Created: 2024-04-24T07:24:03.000Z (8 months ago)
• Default Branch: main
• Last Pushed: 2024-08-08T02:17:43.000Z (5 months ago)
• Last Synced: 2024-12-08T05:30:16.476Z (14 days ago)
• Language: C#
• Size: 64.5 KB
• Stars: 98
• Watchers: 6
• Forks: 5
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Waiting for dependencies

This examples shows how to extend the .NET Aspire application model to enable waiting for dependencies to be available before starting the application. It uses ASP.NET Core's [health checks API](https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/health-checks?view=aspnetcore-8.0) to determine if specific resources are available after they are considered running.

```C#

var builder = DistributedApplication.CreateBuilder(args);

var db = builder.AddSqlServer("sql")

    .WithHealthCheck()

    .AddDatabase("db");

var rabbit = builder.AddRabbitMQ("rabbit")

                    .WithHealthCheck();

var console = builder.AddProject("console");

builder.AddProject("api")

    .WithExternalHttpEndpoints()

    .WithReference(db)

    .WithReference(rabbit)

    // Wait for the database and rabbitmq to be healthy before starting the api

    .WaitFor(db)

    .WaitFor(rabbit)

    // Wait for the console application to run to completion

    .WaitForCompletion(console);

builder.Build().Run();

```

The above example shows the usage. `WaitFor` is an extension method that stores a 

reference to the dependency and waits for it to be healthy before starting a specific resource. In the above case,

the `api` project will wait for the `db` and `rabbit` dependencies to be healthy before starting.