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BUG/MINOR: state-file: do not store duplicates in the global tree

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The global state file tree isn't configured for unique keys, so if an
entry appears multiple times, e.g. due to a bogus script that concatenates
entries multiple times, this will needlessly eat memory. Let's just drop
duplicates.

This should be backported to 2.1.
This commit is contained in:
Willy Tarreau 2019-12-20 17:23:40 +01:00
parent 7d6a1fa311
commit fd1aa01f72
1 changed files with 7 additions and 2 deletions
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9
src/server.c
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@ -75,7 +75,7 @@ struct dict server_name_dict = {
};
/* tree where global state_file is loaded */
struct eb_root state_file = EB_ROOT;
struct eb_root state_file = EB_ROOT_UNIQUE;
int srv_downtime(const struct server *s)
{
@ -3632,7 +3632,12 @@ void apply_server_state(void)
goto nextline;
}
memcpy(st->name_name.key, trash.area, trash.data + 1);
ebst_insert(&state_file, &st->name_name);
if (ebst_insert(&state_file, &st->name_name) != &st->name_name) {
/* this is a duplicate key, probably a hand-crafted file,
* drop it!
*/
goto nextline;
}
/* save line */
st->line = line;