anthrax3 / draft

An etcd client library for .Net

Draft

An etcd client library for .Net

Get it on NuGet:

PM> Install-Package Draft

Basic usage

Initialize the Client

var client = Draft.Etcd.ClientFor(new Uri("http://localhost:4001"));

Initialize the Client with multiple endpoints

var endpointPool = await Draft.Endpoints.EndpointPool.Build()
	.WithRoutingStrategy(Draft.Endpoints.EndpointRoutingStrategy.RoundRobin)
	.WithVerificationStrategy(Draft.Endpoints.EndpointVerificationStrategy.All)
	.VerifyAndBuild(
		new Uri("http://localhost:4001"), 
		new Uri("http://localhost:4002"), 
		new Uri("http://localhost:5002")
	);
var client = Draft.Etcd.ClientFor(endpointPool);

Key based operations

Set a key

var keyResult = await client
                .UpsertKey("/somekey")
                .WithValue("The Value!");

Set a key with an expiration

var keyResult = await client
                .UpsertKey("/expiringkey")
                .WithValue("I Expire!")
                .WithTimeToLive(300 /* seconds */);

Get a key

var keyResult = await client
                .GetKey("/somekey");

Get a key with a fully linearized read

var keyResult = await client
                .GetKey("/somekey")
                .WithQuorum(true);

Delete a key

await client.DeleteKey("/somekey");

Create a directory

var dirResult = await client
                .CreateDirectory("/foo");

Create an expiring directory

var dirResult = await client
                .CreateDirectory("/foo")
                .WithTimeToLive(300 /* seconds */);

Watch a key for a single change

client.WatchOnce("/somekey")
    .Subscribe(x => { /* do the thing */ });

Monitor a key and child keys for changes

client.Watch("/somekey")
    .WithRecursive(true)
    .Subscribe(x => { /* do the thing */ });

Stop monitoring key changes

var disposable = client.Watch("/somekey")
                    .WithRecursive(true)
                    .Subscribe(x => { /* do the thing */ });

disposable.Dispose();

Atomic Key based operations

Update a key with an expected value

var result = await client
            .Atomic
            .CompareAndSwap("/atomickey")
            .WithExpectedValue("foo")
            .WithNewValue("bar");

Delete a key with an expected modified index

var result = await client
            .Atomic
            .CompareAndDelete("/atomickey")
            .WithExpectedIndex(33);

Cluster based operations

Get cluster members

var members = await client
                .Cluster
                .GetMembers();

Get cluster leader

var leader = await client
                .Cluster
                .GetLeader();

Add a cluster member

var memberInfo = await client
                .Cluster
                .CreateMember()
                .WithPeerUri(
					new Uri("http://localhost:4002"), 
					new Uri("http://localhost:5002")
				);

Remove a cluster member

await client
    .Cluster
    .DeleteMember()
    .WithMemberId(memberInfo.Id);