Sander.MultiTry
1.0.0
See the version list below for details.
dotnet add package Sander.MultiTry --version 1.0.0
NuGet\Install-Package Sander.MultiTry -Version 1.0.0
<PackageReference Include="Sander.MultiTry" Version="1.0.0" />
paket add Sander.MultiTry --version 1.0.0
#r "nuget: Sander.MultiTry, 1.0.0"
// Install Sander.MultiTry as a Cake Addin #addin nuget:?package=Sander.MultiTry&version=1.0.0 // Install Sander.MultiTry as a Cake Tool #tool nuget:?package=Sander.MultiTry&version=1.0.0
There are great many operations which can have transient errors, such as network requests, database operations and many more. In case of a transient exception, the operation usually needs to be retried.
MultiTry is created to reduce the amount of boilerplate code that needs to be written for such operations. The goal was to have an easy-to-use, but yet flexible and powerful re-try mechanism, which supports exception filtering, handling and re-throwing - see examples below.
Features
- Easy to use
- Supports both functions (returns result) and actions (no return value)
- Supports async functions
- Optional exception filtering
- Configurable number of retries
- Configurable delay between attempts
- .NET Standard 2.0, meaning MultiTry can be used with .NET Framework 4.6.1+, .NET Core 2.0 and more - see here for detailed information.
Examples
Simplest possible use case:
UserInfo userInfo = MultiTry.Try(() => GetUserInfo(userId))
This executes method GetUserInfo() with the default settings, meaning:
- 3 attempts to execute GetUserInfo()
- No delay between the attempts
- If all retries get an exception, Try returns
default(UserInfo)
(null if UserInfo is a class).
A more complex example with exception filtering and logging:
var options = MultiTryOptions<UserInfo>.Default;
//delay 1000 ms between attempts
options.Delay = 1000;
//try up to five times
options.TryCount = 5;
//retry only if the exception is SqlException
options.ExceptionFilter = ex => ex.GetType() == typeof(SqlException);
//log exception information
options.OnException = (ex, i) =>
{
Trace.WriteLine($"Attempt {i}: {ex}");
return true; //continue attempts
};
//if all retries fail, create a new user and return that
options.OnFinalFailure = ex =>
{
Trace.WriteLine($"Creating a new user with id {userId}. Fetching user failed with exception {ex}.";
return new UserInfo { UserId = userId, IsNew = true };
};
var userInfo = MultiTry.Try(() => GetUserInfo(userId), options);
There is also a full commented example in tests, FullExample.cs.
Product | Versions Compatible and additional computed target framework versions. |
---|---|
.NET | net5.0 was computed. net5.0-windows was computed. net6.0 was computed. 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. |
.NET Core | netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed. |
.NET Standard | netstandard2.0 is compatible. netstandard2.1 was computed. |
.NET Framework | net461 was computed. net462 was computed. net463 was computed. net47 was computed. net471 was computed. net472 was computed. net48 was computed. net481 was computed. |
MonoAndroid | monoandroid was computed. |
MonoMac | monomac was computed. |
MonoTouch | monotouch was computed. |
Tizen | tizen40 was computed. tizen60 was computed. |
Xamarin.iOS | xamarinios was computed. |
Xamarin.Mac | xamarinmac was computed. |
Xamarin.TVOS | xamarintvos was computed. |
Xamarin.WatchOS | xamarinwatchos was computed. |
-
.NETStandard 2.0
- No dependencies.
NuGet packages
This package is not used by any NuGet packages.
GitHub repositories
This package is not used by any popular GitHub repositories.