Couchbase.Extensions.DnsDiscovery 2.0.0

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dotnet add package Couchbase.Extensions.DnsDiscovery --version 2.0.0
NuGet\Install-Package Couchbase.Extensions.DnsDiscovery -Version 2.0.0
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="Couchbase.Extensions.DnsDiscovery" Version="2.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Couchbase.Extensions.DnsDiscovery --version 2.0.0
#r "nuget: Couchbase.Extensions.DnsDiscovery, 2.0.0"
#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 Couchbase.Extensions.DnsDiscovery as a Cake Addin
#addin nuget:?package=Couchbase.Extensions.DnsDiscovery&version=2.0.0

// Install Couchbase.Extensions.DnsDiscovery as a Cake Tool
#tool nuget:?package=Couchbase.Extensions.DnsDiscovery&version=2.0.0

Couchbase.Extensions.DnsDiscovery

A .Net Core compatible DNS SRV mechanism for discovering a Couchbase cluster dynamically.

Getting Started

Assuming you have an installation of Couchbase Server and Visual Studio (examples with VSCODE forthcoming), do the following:

  • Create a .NET Core Web Application using Visual Studio or VsCodeor CIL
  • Install the package from NuGet or build from source and add reference

Configuration

To use, call AddCouchbaseDnsDiscovery during the service registration process, usually in your Startup class. You may choose whether or not to add this step based on the environment. Be sure to add the basic Couchbase configuration first.

public class Startup
{
    public Startup(IHostingEnvironment env)
    {
        var builder = new ConfigurationBuilder()
            .SetBasePath(env.ContentRootPath)
            .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
            .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
            .AddEnvironmentVariables();

        Configuration = builder.Build();
        Environment = env;
    }

    public IConfigurationRoot Configuration { get; }
    public IHostingEnvironment Environment { get; }

    public void ConfigureServices(IServiceCollection services)
    {
        // Register Couchbase with configuration section
        services.AddCouchbase(Configuration.GetSection("Couchbase"));

        if (Environment.IsProduction())
        {
            // Lookup DNS SRV records using the query _couchbase._tcp.services.local
            services.AddCouchbaseDnsDiscovery("_couchbase._tcp.services.local");

           // Note: the record name above could also be retreived from configuration
        }

        // Register other services, like .AddMvc()
    }

The above configuration will perform a DNS SRV query (only in the Production environment). The results will be used to replace the Servers list in the Couchbase client configuration. Any servers listed in the configuration section will be thrown out.

Note that only the servers with the highest priority in the DNS SRV response will be used. For example, if the response returns 2 servers with a priority of 10 and 2 different servers with a priority of 20, the first set will be used to initialize the cluster. SRV record failover is not supported.

Additionally, due to the nature of Couchbase clusters, the weight fields in the DNS SRV records are ignored. However, the port is used and should normally be set to 8091.

Product 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. 
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
2.0.2 34,963 5/9/2018
2.0.1 5,655 3/1/2018
2.0.0 1,653 11/8/2017
1.0.2 4,701 8/7/2017
1.0.0 1,539 2/15/2017
1.0.0-beta4 878 1/26/2017
1.0.0-beta2 822 1/8/2017

Supports .NET Core 2.0