[discuss] need a way to support v3 protocol of etcd

[membphis]

use a new component etcd proxy (maybe a process or a Nginx server).

user -> etcd proxy -> admin API -> etcd v3.

[nic-chen]

proxy mode will make the system complicated. I prefer to provide a conversion interface in the resty-etcd library for now, which can convert the respond data of the v3 interface into the format of the v2 interface to achieve compatibility.

[moonming]

why not support etcd v3 directly?

[bingchengxiaobing117]

I have tried etcd v3 procotol, but I often run out of time in watchdir api. If you are interested, you can discuss it together, the detail see:
api7/lua-resty-etcd#56

[membphis]

why not support etcd v3 directly?

The Admin API and apisix core depend on the etcd v2 protocol.

If we support etcd v3 directly, it will be a big PR. But I love to support etcd v3 directly, v3 is future.

[Yiyiyimu]

Hi @nic-chen , I'm interested in this project for summer-2020. Do you have some guideline/evaluation tasks or suggestions to get familiar with this project?

[moonming]

@Yiyiyimu are you come from https://cwiki.apache.org/confluence/display/APISIX/Open+Source+Promotion+Plan+-+Summer+2020+Tasks?
I think you can start from how to use https://github.com/api7/lua-resty-etcd, and th different from etcd v2 and v3 protocol.

[moonming]

@nic-chen what do you think?

[moonming]

@Yiyiyimu IMO, I suggest you to use etcd v3 directly in Apache APISIX, not the etcd proxy mode.

[Yiyiyimu]

@Yiyiyimu are you come from https://cwiki.apache.org/confluence/display/APISIX/Open+Source+Promotion+Plan+-+Summer+2020+Tasks?
I think you can start from how to use https://github.com/api7/lua-resty-etcd, and th different from etcd v2 and v3 protocol.

Thank you @moonming for the quick reply!

Yes I do come from the promotion plan. I'll give it a try on lua-resty-etcd these days.

[moonming]

great, please feel free ping me when you need any help. I will add you to the candidate of this task. Shuyang Wu <[email protected]> 于 2020年5月23日周六 上午12:31写道：

…

@Yiyiyimu <https://github.com/Yiyiyimu> are you come from https://cwiki.apache.org/confluence/display/APISIX/Open+Source+Promotion+Plan+-+Summer+2020+Tasks ? I think you can start from how to use https://github.com/api7/lua-resty-etcd, and th different from etcd v2 and v3 protocol. Thank you @moonming <https://github.com/moonming> for the quick reply! Yes I do come from the promotion plan. I'll give it a try on lua-resty-etcd these days. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#1542 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGJZBK66U2KA3YESUN7UX7DRS2SFRANCNFSM4M2DB2ZA> .

[nic-chen]

@Yiyiyimu

I suggest that you could install Apache APISIX using the master branch source code,
and then configure and use it according to the documentation,
so that you can understand how APISIX and etcd work,
and then look at the source code to understand how lua-resty-etcd v2 is used in APISIX.

If you do not have openresty development experience, you need to familiarize yourself with openresty first.

As @moonming said, we have discussed and reached an agreement to directly use v3 instead of v2 without data format compatibility.

please feel free to contact us when you need any help. Thanks.

[Yiyiyimu]

Thank you @nic-chen for your stepwise suggestions! BTW, which way do you recommend to contact the mentors and the community, email subscription, gitter or some other ways?

[moonming]

mailinglist is the best Shuyang Wu <[email protected]> 于 2020年5月23日周六 下午3:04写道：

…

Thank you @nic-chen <https://github.com/nic-chen> for your stepwise suggestions! BTW, which way do you recommend to contact the mentors and the community, email subscription, gitter or some other ways? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#1542 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGJZBK2GKJCFJSKGRG5T6YTRS5YPPANCNFSM4M2DB2ZA> .

[moonming]

@Yiyiyimu we can discuss this issue in the dev mailing list: [email protected], thx

[Yiyiyimu]

Sure thank you Ming! I'll update my progress in these days.

…

________________________________ 发件人: Wen Ming <[email protected]> 发送时间: 2020年5月30日星期六 10:38 收件人: apache/incubator-apisix 抄送: Shuyang Wu; Mention 主题: Re: [apache/incubator-apisix] [discuss] need a way to support v3 protocol of etcd (#1542) @Yiyiyimu<https://github.com/Yiyiyimu> we can discuss this issue in the dev mailing list: [email protected]<mailto:[email protected]>, thx ― You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub<#1542 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AIH4YOF4TUY2IIBFCVTSPS3RUBWSVANCNFSM4M2DB2ZA>.

[nic-chen]

hi @Yiyiyimu

Is there any progress?

please feel free to contact us if you have any problem with this.