Re: [Tarantool-patches] [PATCH] box: sql prepare and execute statistics should be reflected in box.stat()

[Vladislav Shpilevoy <v.shpilevoy@tarantool.org>]

Hi! Thanks for the patch!

On 10/02/2020 19:35, Maria Khaydich wrote:
> Calling prepare and execute did not update corresponding request statistics
> in the box.stat table. This happened because methods that collect stats were
> never called where they should have been.
>  
> Closes #4756
> 
> ---
> Issue:
> https://github.com/tarantool/tarantool/issues/4756
> Branch:
> https://github.com/tarantool/tarantool/compare/eljashm/gh-4756-box-stat-execute-and-prepare-not-updated <https://github.com/tarantool/tarantool/issues/4756Branch:https://github.com/tarantool/tarantool/compare/eljashm/gh-4756-box-stat-execute-and-prepare-not-updated>

Something is broken with the links. When I click on them, all the links are
pasted into the address string of my browser concatenated. And this is what
I see in the source:

https://github.com/tarantool/tarantool/compare/eljashm/gh-4756-box-stat-execute-and-prepare-not-updated <https://github.com/tarantool/tarantool/issues/4756Branch:https://github.com/tarantool/tarantool/compare/eljashm/gh-4756-box-stat-execute-and-prepare-not-updated>

So everything is a one huge line. This does not happen with other emails
and links.

See 2 comments below.

>  src/box/execute.c         |  4 ++++
>  test/box-tap/cfg.test.lua | 16 +++++++++++++---
>  2 files changed, 17 insertions(+), 3 deletions(-)
> diff --git a/src/box/execute.c b/src/box/execute.c
> index dc8dce81c..e775055b4 100644
> --- a/src/box/execute.c
> +++ b/src/box/execute.c
> @@ -732,6 +735,7 @@ sql_prepare_and_execute(const char *sql, int len, const struct sql_bind *bind,
>      if (sql_stmt_compile(sql, len, NULL, &stmt, NULL) != 0)
>          return -1;
>      assert(stmt != NULL);
> +    rmean_collect(rmean_box, IPROTO_PREPARE, 1);

1. Nikita is right, this is called when IPROTO_EXECUTE arrives. You can
see that in iproto.cc. This is a separate question, why do we collect
IPROTO_* statistics out of iproto. For now lets just use IPROTO_EXECUTE
here.

>      enum sql_serialization_format format = sql_column_count(stmt) > 0 ?
>                         DQL_EXECUTE : DML_EXECUTE;
>      port_sql_create(port, stmt, format, true);
> diff --git a/test/box-tap/cfg.test.lua b/test/box-tap/cfg.test.lua
> index d529447bb..d367aab07 100755
> --- a/test/box-tap/cfg.test.lua
> +++ b/test/box-tap/cfg.test.lua
> @@ -6,7 +6,7 @@ local socket = require('socket')
>  local fio = require('fio')
>  local uuid = require('uuid')
>  local msgpack = require('msgpack')
> -test:plan(104)
> +test:plan(106)

2. Here Nikita is also right. This file is for box.cfg() function
tests. For iproto statistics, indeed, sql/iproto.test.lua would
fit well.