add CommitIndex API

[niebayes]

This API is useful for implementing the read index optimization as described in the Raft paper.

[hashicorp-cla]

All committers have signed the CLA.

[mkeeler]

LGTM. This already is reported in the Stats map and the underlying values are synchronized appropriately so I see no reason why this value shouldn't be exposed with a direct API.

[mkeeler]

@niebayes I think you will need to sign the HashiCorp CLA before this can be merged.

[niebayes]

@mkeeler Hi, I've completed the signature.

[loshz]

@niebayes it looks like you need to run go fmt api.go as there is a slight formatting issue that's blocking CI.

[niebayes]

Ok. Dan Bond ***@***.***> 于2023年7月1日周六 01:48写道：

…

@niebayes <https://github.com/niebayes> it looks like you need to run go fmt api.go as there is a slight formatting issue that's blocking CI. — Reply to this email directly, view it on GitHub <#560 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGBF34NRJ3TXFNDSNP2ZPJ3XN4GN3ANCNFSM6AAAAAAZVHER3E> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[niebayes]

@loshz Hi, I've fixed the formatting issue.

[JoanFM]

Hello @mkeeler and @loshz ,

do you have any approximate timeline about when this PR may be merged and added in a release?