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Have repmgrd parse "standby follow --upstream-node-id=%n"

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This commit is contained in:
Ian Barwick
2017-09-04 13:42:50 +09:00
parent 9a0f45d7d3
commit 78e6bdeebe
7 changed files with 105 additions and 15 deletions
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51
strutil.c
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@@ -410,3 +410,54 @@ trim(char *s)
return s;
}
void
parse_follow_command(char *parsed_command, char *template, int node_id)
{
const char *src_ptr = NULL;
char *dst_ptr = NULL;
char *end_ptr = NULL;
dst_ptr = parsed_command;
end_ptr = parsed_command + MAXPGPATH - 1;
*end_ptr = '\0';
for(src_ptr = template; *src_ptr; src_ptr++)
{
if (*src_ptr == '%')
{
switch (src_ptr[1])
{
case '%':
/* %%: replace with % */
if (dst_ptr < end_ptr)
{
src_ptr++;
*dst_ptr++ = *src_ptr;
}
break;
case 'n':
/* %n: node id */
src_ptr++;
snprintf(dst_ptr, end_ptr - dst_ptr, "%i", node_id);
dst_ptr += strlen(dst_ptr);
break;
default:
/* otherwise treat the % as not special */
if (dst_ptr < end_ptr)
*dst_ptr++ = *src_ptr;
break;
}
}
else
{
if (dst_ptr < end_ptr)
*dst_ptr++ = *src_ptr;
}
}
*dst_ptr = '\0';
return;
}