dotnet-etcd 3.0.0.1-beta

A C# .NET (dotnet) GRPC client for etcd v3+.

etcd is a distributed key value store that provides a reliable way to store data across a cluster of machines. It’s open-source and available on GitHub. etcd gracefully handles leader elections during network partitions and will tolerate machine failure, including the leader.

Your applications can read and write data into etcd. A simple use-case is to store database connection details or feature flags in etcd as key value pairs. These values can be watched, allowing your app to reconfigure itself when they change.

Advanced uses take advantage of the consistency guarantees to implement database leader elections or do distributed locking across a cluster of workers.

This is a prerelease version of dotnet-etcd.
Install-Package dotnet-etcd -Version 3.0.0.1-beta
dotnet add package dotnet-etcd --version 3.0.0.1-beta
<PackageReference Include="dotnet-etcd" Version="3.0.0.1-beta" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add dotnet-etcd --version 3.0.0.1-beta
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

dotnet-etcd

A C# .NET (dotnet) GRPC client for etcd v3+

Build Status
Nuget Version Info
Nuget Download Info

Supported .NET Versions

  • .NETCoreApp 2.2
  • .NETCoreApp 2.1
  • .NETCoreApp 2.0
  • .NETStandard 2.0
  • .NETFramework 4.7.2
  • .NETFramework 4.7.1
  • .NETFramework 4.7
  • .NETFramework 4.6.2
  • .NETFramework 4.6.1
  • .NETFramework 4.6
  • .NETFramework 4.5.2
  • .NETFramework 4.5.1
  • .NETFramework 4.5

Installing Package

Nuget package is published on nuget.org and can be installed in the following ways :

Nuget Package Manager

Install-Package dotnet-etcd

.NET CLI

dotnet add package dotnet-etcd

Paket CLI

paket add dotnet-etcd

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Usage :

Add using statement at the top of your class file

using dotnet_etcd;

Client Initialization

No Basic auth or SSL
EtcdClient client = new EtcdClient(<HOSTNAME_STRING>, <PORTNO_INT>);
// E.g.
EtcdClient client = new EtcdClient("127.0.0.1", 2379);
Available Constructor Parameters
  • username - String containing username for etcd basic auth. Default : Empty String
  • password - String containing password for etcd basic auth. Default : Empty String
  • caCert - String containing ca cert when using self signed certificates with etcd. Default : EmptyString
  • clientCert - String containing client cert when using self signed certificates with client auth enabled in etcd. Default : EmptyString
  • clientKey - String containing client key when using self signed certificates with client auth enabled in etcd. Default : EmptyString
  • publicRootCa - Bool depicting whether to use publicy trusted roots to connect to etcd. Default : false.

Operations

A lot of methods have been implemented using etcd's default input/output parameters. I am simplifying a lot of methods by including more overloads as I come across use cases. If you have some, please feel free to raise and issue or a PR :)

Key-Value Operations
Put a key
client.Put(<KEY_STRING>,<VALUE_STRING>);
// E.g Put key "foo/bar" with value "foobar"
client.Put("foo/bar","barfoo");

await client.PutAsync(<KEY_STRING>,<VALUE_STRING>);
// E.g Put key "foo/bar" with value "foobar" in async
await client.PutAsync("foo/bar","barfoo");
Get a key
client.GetVal(<KEY_STRING>);
// E.g Get key "foo/bar"
client.GetVal("foo/bar");
// To get full etcd response
client.Get("foo/bar");

await client.GetValAsync(<KEY_STRING>);
// E.g. Get key "foo/bar" in async
await client.GetValAsync("foo/bar");
// To get full etcd response
await client.GetAsync("foo/bar");
Get multiple keys with a common prefix
client.GetRange(<PREFIX_STRING>);
// E.g. Get all keys with pattern "foo/*"
client.GetRange("foo/"); 

await client.GetRangeAsync(<PREFIX_STRING>);
// E.g. Get all keys with pattern "foo/*" in async
await client.GetRangeAsync("foo/");
Delete a key
client.Delete(<KEY_STRING>);
// E.g. Delete key "foo/bar"
client.Delete("foo/bar");

await client.DeleteAsync(<KEY_STRING>);
// E.g. Delete key "foo/bar" in async
await client.DeleteAsync("foo/bar");
Delete multiple keys with a common prefix
client.DeleteRange(<PREFIX_STRING>);
// E.g. Delete all keys with pattern "foo/*"
client.DeleteRange("foo/"); 

await client.DeleteRangeAsync(<PREFIX_STRING>);
// E.g. Delete all keys with pattern "foo/*" in async
await client.DeleteRangeAsync("foo/");

Watch Operations

Watch a key
WatchRequest request = new WatchRequest()
{
    CreateRequest = new WatchCreateRequest()
    {
        Key = ByteString.CopyFromUtf8("foo")
    }
};
etcdClient.Watch(request, print);

-------------------------------
// Print function that prints key and value from the watch response
private static void print(WatchResponse response)
{   
    if (response.Events.Count == 0)
    {
        Console.WriteLine(response);
    }
    else
    {
        Console.WriteLine($"{response.Events[0].Kv.Key.ToStringUtf8()}:{response.Events .Kv.Value.ToStringUtf8()}");
    }
}

----------------------------------
// Print function that prints key and value from the minimal watch
// response data 
private static void print(WatchEvent[] response)
{
    foreach(WatchEvent e1 in response)
    {
        Console.WriteLine($"{e1.Key}:{e1.Value}:{e1.Type}");
    }
}

Watch also has a simple overload as follows

etcdClient.Watch("foo", print);

More overloads are also available. You can check them using IntelliSense (Ctrl+Shift+Space). Detailed documentation coming soon.

Cluster Operations

Add a member into the cluster
 MemberAddRequest request = new MemberAddRequest();
 request.PeerURLs.Add("http://example.com:2380");
 request.PeerURLs.Add("http://10.0.0.1:2380");
 MemberAddResponse res = etcdClient.MemberAdd(request);

 // Async
 MemberAddResponse res = await etcdClient.MemberAddAsync(request);

 // Do something with response
Remove an existing member from the cluster
MemberRemoveRequest request = new MemberRemoveRequest
{
    // ID of member to be removed
    ID = 651748107021
};
MemberRemoveResponse res = etcdClient.MemberRemove(request);

// Async
MemberRemoveResponse res = await etcdClient.MemberRemoveAsync(request);

// Do something with response

Update the member configuration

MemberUpdateRequest request = new MemberUpdateRequest
{
    // ID of member to be updated
    ID = 651748107021
};
request.PeerURLs.Add("http://10.0.0.1:2380");
MemberUpdateResponse res = etcdClient.MemberUpdate(request);

// Async
MemberUpdateResponse res = await etcdClient.MemberUpdateAsync(request);

// Do something with response

List all the members in the cluster

MemberListRequest request = new MemberListRequest();
etcdClient.MemberList(request);
MemberListResponse res = etcdClient.MemberList(request);

// Async
MemberListResponse res = await etcdClient.MemberListAsync(request);

// Do something with response
foreach(var member in res.Members)
{
    Console.WriteLine($"{member.ID} - {member.Name} - {member.PeerURLs}");
}

dotnet-etcd

A C# .NET (dotnet) GRPC client for etcd v3+

Build Status
Nuget Version Info
Nuget Download Info

Supported .NET Versions

  • .NETCoreApp 2.2
  • .NETCoreApp 2.1
  • .NETCoreApp 2.0
  • .NETStandard 2.0
  • .NETFramework 4.7.2
  • .NETFramework 4.7.1
  • .NETFramework 4.7
  • .NETFramework 4.6.2
  • .NETFramework 4.6.1
  • .NETFramework 4.6
  • .NETFramework 4.5.2
  • .NETFramework 4.5.1
  • .NETFramework 4.5

Installing Package

Nuget package is published on nuget.org and can be installed in the following ways :

Nuget Package Manager

Install-Package dotnet-etcd

.NET CLI

dotnet add package dotnet-etcd

Paket CLI

paket add dotnet-etcd

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Usage :

Add using statement at the top of your class file

using dotnet_etcd;

Client Initialization

No Basic auth or SSL
EtcdClient client = new EtcdClient(<HOSTNAME_STRING>, <PORTNO_INT>);
// E.g.
EtcdClient client = new EtcdClient("127.0.0.1", 2379);
Available Constructor Parameters
  • username - String containing username for etcd basic auth. Default : Empty String
  • password - String containing password for etcd basic auth. Default : Empty String
  • caCert - String containing ca cert when using self signed certificates with etcd. Default : EmptyString
  • clientCert - String containing client cert when using self signed certificates with client auth enabled in etcd. Default : EmptyString
  • clientKey - String containing client key when using self signed certificates with client auth enabled in etcd. Default : EmptyString
  • publicRootCa - Bool depicting whether to use publicy trusted roots to connect to etcd. Default : false.

Operations

A lot of methods have been implemented using etcd's default input/output parameters. I am simplifying a lot of methods by including more overloads as I come across use cases. If you have some, please feel free to raise and issue or a PR :)

Key-Value Operations
Put a key
client.Put(<KEY_STRING>,<VALUE_STRING>);
// E.g Put key "foo/bar" with value "foobar"
client.Put("foo/bar","barfoo");

await client.PutAsync(<KEY_STRING>,<VALUE_STRING>);
// E.g Put key "foo/bar" with value "foobar" in async
await client.PutAsync("foo/bar","barfoo");
Get a key
client.GetVal(<KEY_STRING>);
// E.g Get key "foo/bar"
client.GetVal("foo/bar");
// To get full etcd response
client.Get("foo/bar");

await client.GetValAsync(<KEY_STRING>);
// E.g. Get key "foo/bar" in async
await client.GetValAsync("foo/bar");
// To get full etcd response
await client.GetAsync("foo/bar");
Get multiple keys with a common prefix
client.GetRange(<PREFIX_STRING>);
// E.g. Get all keys with pattern "foo/*"
client.GetRange("foo/"); 

await client.GetRangeAsync(<PREFIX_STRING>);
// E.g. Get all keys with pattern "foo/*" in async
await client.GetRangeAsync("foo/");
Delete a key
client.Delete(<KEY_STRING>);
// E.g. Delete key "foo/bar"
client.Delete("foo/bar");

await client.DeleteAsync(<KEY_STRING>);
// E.g. Delete key "foo/bar" in async
await client.DeleteAsync("foo/bar");
Delete multiple keys with a common prefix
client.DeleteRange(<PREFIX_STRING>);
// E.g. Delete all keys with pattern "foo/*"
client.DeleteRange("foo/"); 

await client.DeleteRangeAsync(<PREFIX_STRING>);
// E.g. Delete all keys with pattern "foo/*" in async
await client.DeleteRangeAsync("foo/");

Watch Operations

Watch a key
WatchRequest request = new WatchRequest()
{
    CreateRequest = new WatchCreateRequest()
    {
        Key = ByteString.CopyFromUtf8("foo")
    }
};
etcdClient.Watch(request, print);

-------------------------------
// Print function that prints key and value from the watch response
private static void print(WatchResponse response)
{   
    if (response.Events.Count == 0)
    {
        Console.WriteLine(response);
    }
    else
    {
        Console.WriteLine($"{response.Events[0].Kv.Key.ToStringUtf8()}:{response.Events .Kv.Value.ToStringUtf8()}");
    }
}

----------------------------------
// Print function that prints key and value from the minimal watch
// response data 
private static void print(WatchEvent[] response)
{
    foreach(WatchEvent e1 in response)
    {
        Console.WriteLine($"{e1.Key}:{e1.Value}:{e1.Type}");
    }
}

Watch also has a simple overload as follows

etcdClient.Watch("foo", print);

More overloads are also available. You can check them using IntelliSense (Ctrl+Shift+Space). Detailed documentation coming soon.

Cluster Operations

Add a member into the cluster
 MemberAddRequest request = new MemberAddRequest();
 request.PeerURLs.Add("http://example.com:2380");
 request.PeerURLs.Add("http://10.0.0.1:2380");
 MemberAddResponse res = etcdClient.MemberAdd(request);

 // Async
 MemberAddResponse res = await etcdClient.MemberAddAsync(request);

 // Do something with response
Remove an existing member from the cluster
MemberRemoveRequest request = new MemberRemoveRequest
{
    // ID of member to be removed
    ID = 651748107021
};
MemberRemoveResponse res = etcdClient.MemberRemove(request);

// Async
MemberRemoveResponse res = await etcdClient.MemberRemoveAsync(request);

// Do something with response

Update the member configuration

MemberUpdateRequest request = new MemberUpdateRequest
{
    // ID of member to be updated
    ID = 651748107021
};
request.PeerURLs.Add("http://10.0.0.1:2380");
MemberUpdateResponse res = etcdClient.MemberUpdate(request);

// Async
MemberUpdateResponse res = await etcdClient.MemberUpdateAsync(request);

// Do something with response

List all the members in the cluster

MemberListRequest request = new MemberListRequest();
etcdClient.MemberList(request);
MemberListResponse res = etcdClient.MemberList(request);

// Async
MemberListResponse res = await etcdClient.MemberListAsync(request);

// Do something with response
foreach(var member in res.Members)
{
    Console.WriteLine($"{member.ID} - {member.Name} - {member.PeerURLs}");
}

Release Notes

1. Update balancer logic
2. Fix header injections

This package is not used by any popular GitHub repositories.

Version History

Version Downloads Last updated
3.0.0.1-beta 124 9/6/2019
3.0.0 254 9/24/2019
3.0.0-beta 962 9/6/2019
3.0.0-alpha 68 8/11/2019
2.3.1 11,395 3/18/2019
2.3.0 609 3/9/2019
2.2.0 231 2/17/2019
2.1.1 177 2/12/2019
2.1.0 617 1/27/2019
2.0.1 2,527 12/9/2018
2.0.0 492 11/18/2018