Re: [HACKERS] pg_basebackup --progress output for batch execution - Mailing list pgsql-hackers

From Arthur Zakirov
Subject Re: [HACKERS] pg_basebackup --progress output for batch execution
Date
Msg-id 20171109122940.GA19928@zakirov.localdomain
Whole thread Raw
In response to Re: [HACKERS] pg_basebackup --progress output for batch execution  (Martin Marques <martin.marques@2ndquadrant.com>)
Responses Re: [HACKERS] pg_basebackup --progress output for batch execution
List pgsql-hackers
Hello,

On Sun, Oct 01, 2017 at 04:49:17PM -0300, Martin Marques wrote:
> Updated patch with documentation of the new option.
> 

I have checked the patch.
The patch is applied and compiled correctly without any errors. Tests passed.
The documentation doesn't have errors too.


I have a little suggestion. Maybe insert new line without any additional parameters? We can check that stderr is not
terminalusing isatty().
 

The code could become:

if (!isatty(fileno(stderr)))fprintf(stderr, "\n");
elsefprintf(stderr, "\r");

Also it could be good to not insert new line after progress:

if (showprogress)
{progress_report(PQntuples(res), NULL, true);/* if (!batchmode) *//* or */if (isatty(fileno(stderr)))
fprintf(stderr,"\n");    /* Need to move to next line */
 
}

Otherwise we have an extra empty line:

pg_basebackup: initiating base backup, waiting for checkpoint to complete
pg_basebackup: checkpoint completed
pg_basebackup: write-ahead log start point: 0/1C000028 on timeline 1
pg_basebackup: starting background WAL receiver
pg_basebackup: created temporary replication slot "pg_basebackup_19635"    0/183345 kB (0%), 0/1 tablespace
(data_repl/backup_label            )
 
183355/183355 kB (100%), 0/1 tablespace (data_repl/global/pg_control        )
183355/183355 kB (100%), 1/1 tablespace

pg_basebackup: write-ahead log end point: 0/1C0000F8
pg_basebackup: waiting for background process to finish streaming ...
pg_basebackup: base backup completed

-- 
Arthur Zakirov
Postgres Professional: http://www.postgrespro.com
Russian Postgres Company


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