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Revert idea of zer-padding padding session id in log_line_prefix

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Removal of doc adjustment and release note mention as well.
This commit is contained in:
Bruce Momjian 2013-05-06 08:59:39 -04:00
parent 539ecc9241
commit 8b06e6aba8
3 changed files with 5 additions and 13 deletions
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6
doc/src/sgml/config.sgml
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@ -4089,14 +4089,14 @@ local0.* /var/log/postgresql
</informaltable> </informaltable>
The <literal>%c</> escape prints a quasi-unique session identifier, The <literal>%c</> escape prints a quasi-unique session identifier,
consisting of two 4-byte hexadecimal numbers separated by a dot. consisting of two 4-byte hexadecimal numbers (without leading zeros)
The numbers are the process start time and the separated by a dot. The numbers are the process start time and the
process ID, so <literal>%c</> can also be used as a space saving way process ID, so <literal>%c</> can also be used as a space saving way
of printing those items. For example, to generate the session of printing those items. For example, to generate the session
identifier from <literal>pg_stat_activity</>, use this query: identifier from <literal>pg_stat_activity</>, use this query:
<programlisting> <programlisting>
SELECT to_hex(EXTRACT(EPOCH FROM backend_start)::integer) || '.' || SELECT to_hex(EXTRACT(EPOCH FROM backend_start)::integer) || '.' ||
regexp_replace('0000' || '0133e3', '^0*(.{4,})$', '\1') to_hex(pid)
FROM pg_stat_activity; FROM pg_stat_activity;
</programlisting> </programlisting>

8
doc/src/sgml/release-9.3.sgml
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@ -78,14 +78,6 @@
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Have <quote>session id</> (<literal>%c</>) in <link
linkend="guc-log-line-prefix"><varname>log_line_prefix</></link>
always output at least four hex digits after the period (Bruce Momjian)
</para>
</listitem>
</itemizedlist> </itemizedlist>
</sect3> </sect3>

4
src/backend/utils/error/elog.c
View File

@ -2087,7 +2087,7 @@ log_line_prefix(StringInfo buf, ErrorData *edata)
} }
break; break;
case 'c': case 'c':
appendStringInfo(buf, "%lx.%04x", (long) (MyStartTime), MyProcPid); appendStringInfo(buf, "%lx.%x", (long) (MyStartTime), MyProcPid);
break; break;
case 'p': case 'p':
appendStringInfo(buf, "%d", MyProcPid); appendStringInfo(buf, "%d", MyProcPid);
@ -2266,7 +2266,7 @@ write_csvlog(ErrorData *edata)
appendStringInfoChar(&buf, ','); appendStringInfoChar(&buf, ',');
/* session id */ /* session id */
appendStringInfo(&buf, "%lx.%04x", (long) MyStartTime, MyProcPid); appendStringInfo(&buf, "%lx.%x", (long) MyStartTime, MyProcPid);
appendStringInfoChar(&buf, ','); appendStringInfoChar(&buf, ',');
/* Line number */ /* Line number */