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Improve "out of range" error messages for GUCs.

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If the GUC has a unit, label the minimum and maximum values
with the unit explicitly.  Per suggestion from Jian He.

Discussion: https://postgr.es/m/CACJufxFJo6FyVg9W8yvNAxbjP+EJ9wieE9d9vw5LpPzyLnLLOQ@mail.gmail.com
This commit is contained in:
Tom Lane 2024-04-23 11:52:40 -04:00
parent b29cbd3da4
commit bb3ca23239
2 changed files with 21 additions and 11 deletions
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30
src/backend/utils/misc/guc.c
View File

@ -3173,15 +3173,20 @@ parse_and_validate_value(struct config_generic *record,
if (newval->intval < conf->min || newval->intval > conf->max)
{
const char *unit = get_config_unit_name(conf->gen.flags);
const char *unitspace;
if (unit)
unitspace = " ";
else
unit = unitspace = "";
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("%d%s%s is outside the valid range for parameter \"%s\" (%d .. %d)",
newval->intval,
unit ? " " : "",
unit ? unit : "",
errmsg("%d%s%s is outside the valid range for parameter \"%s\" (%d%s%s .. %d%s%s)",
newval->intval, unitspace, unit,
name,
conf->min, conf->max)));
conf->min, unitspace, unit,
conf->max, unitspace, unit)));
return false;
}
@ -3209,15 +3214,20 @@ parse_and_validate_value(struct config_generic *record,
if (newval->realval < conf->min || newval->realval > conf->max)
{
const char *unit = get_config_unit_name(conf->gen.flags);
const char *unitspace;
if (unit)
unitspace = " ";
else
unit = unitspace = "";
ereport(elevel,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("%g%s%s is outside the valid range for parameter \"%s\" (%g .. %g)",
newval->realval,
unit ? " " : "",
unit ? unit : "",
errmsg("%g%s%s is outside the valid range for parameter \"%s\" (%g%s%s .. %g%s%s)",
newval->realval, unitspace, unit,
name,
conf->min, conf->max)));
conf->min, unitspace, unit,
conf->max, unitspace, unit)));
return false;
}

2
src/test/regress/expected/guc.out
View File

@ -510,7 +510,7 @@ SELECT '2006-08-13 12:34:56'::timestamptz;
SET seq_page_cost TO 'NaN';
ERROR: invalid value for parameter "seq_page_cost": "NaN"
SET vacuum_cost_delay TO '10s';
ERROR: 10000 ms is outside the valid range for parameter "vacuum_cost_delay" (0 .. 100)
ERROR: 10000 ms is outside the valid range for parameter "vacuum_cost_delay" (0 ms .. 100 ms)
SET no_such_variable TO 42;
ERROR: unrecognized configuration parameter "no_such_variable"
-- Test "custom" GUCs created on the fly (which aren't really an