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 Wed,  6 Nov 2019 16:44:55 +0300 (MSK)
Date: Wed, 6 Nov 2019 16:44:53 +0300
From: Kirill Yukhin <kyukhin@tarantool.org>
Message-ID: <20191106134453.nxw3ssua4unvuill@tarantool.org>
References: <0706877cdc0598bb77489636dd22e852b7a50682.1572385348.git.v.shpilevoy@tarantool.org>
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Subject: Re: [Tarantool-patches] [PATCH 1/1] netbox: don't fire on_connect()
 at schema update
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To: Alexander Turenko <alexander.turenko@tarantool.org>
Cc: tarantool-patches@dev.tarantool.org, Vladislav Shpilevoy <v.shpilevoy@tarantool.org>

Hello,

On 06 ноя 03:56, Alexander Turenko wrote:
> On Tue, Nov 05, 2019 at 07:34:44PM +0300, Kirill Yukhin wrote:
> > Hello,
> > 
> > On 29 окт 22:43, Vladislav Shpilevoy wrote:
> > > There was a bug that netbox at any schema update called
> > > on_connect() triggers. This was due to overcomplicated logic of
> > > handling of changes in the netbox state machine. On_connect() was
> > > fired each time the machine entered 'active' state, even if its
> > > previous states were 'active' and then 'fetch_schema'. The latter
> > > state can be entered many times without reconnects.
> > > 
> > > Another bug was about on_disconnect() - it could be fired even if
> > > the connection never entered active state. For example, if its
> > > first 'fetch_schema' has failed.
> > > 
> > > Now there is an explicit flag showing the machine connect state.
> > > The triggers are fired only when it is changed, on 'active' and on
> > > any error states. Intermediate states (fetch_schema, auth) do not
> > > matter anymore.
> > > 
> > > Thanks @mtrempoltsev for the initial investigation and a draft
> > > fix.
> > > 
> > > Closes #4593
> > > ---
> > > Branch: https://github.com/tarantool/tarantool/tree/gerold103/gh-4593-netbox-on_connect
> > > Issue: https://github.com/tarantool/tarantool/issues/4593
> > 
> > I've checked your patch into 2.2 and master.
> 
> This is the bugfix and should be pushed to 2.1 and 1.10 as well.

Done.

--
Regards, Kirill Yukhin