raft used by etcd available as a library ?

[sankar.c...@gmail.com]

Hi

I am trying to write an application (in golang) whose instances will run in multiple machines and will need some kind of co-ordination among them (mainly a distributed locking). Is the raft implementation used by etcd available as a library that my application could use ?

Or, alternatively are there any videos/tutorials etc. that explain how to use etcd as a locking service ?

Thanks

Sankar

[Yicheng Qin]

yes. our raft implementation is pluggable. You can use https://github.com/coreos/etcd/blob/master/raft/doc.go as the start point. We have future plan to separate it into a independent repo when it is stable enough.

For locking service, it is under development now. You can build one by yourself from v2 API using wait, etcd-index and ttl if you understand it.

[sankar.c...@gmail.com]

On Wednesday, February 11, 2015 at 6:01:07 AM UTC+5:30, yicheng.qin wrote:

yes. our raft implementation is pluggable. You can use https://github.com/coreos/etcd/blob/master/raft/doc.go as the start point. We have future plan to separate it into a independent repo when it is stable enough.

For locking service, it is under development now.

You have a url for this ?

 

You can build one by yourself from v2 API using wait, etcd-index and ttl if you understand it.

I have heard what ttl means (time to live ?) but no idea about the others. I will try to read through the docs and the related literature. I need a locking service and I believe that working with etcd (and potentially contributing patches) will be better than rolling out my own half baked implementation for now.

Thanks.

Sankar

[Yicheng Qin]

Yep.

There is a zookeeper recipe about leader/lock that may be helpful.

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[Sankar P]

2015-02-17 13:16 GMT+05:30 Yicheng Qin <yiche...@coreos.com>:
> Yep.
> There is a zookeeper recipe about leader/lock that may be helpful.

Are you referring to this https://zookeeper.apache.org/doc/r3.4.5/recipes.html ?

Also, can you share the url for the sources/docs of the distributed
lock implementation using etcd that you mentioned is in development ?

Thanks.

Sankar

--
Sankar P
http://psankar.blogspot.com

[Yicheng Qin]

https://github.com/coreos/etcd/blob/master/Documentation/libraries-and-tools.md

There are a few listed in this doc. I don't read through them, so i cannot tell that which one is good.