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FS-9058 [mod_hiredis] fix rate counters so the keys expire after interval completes. Do not auto decrement rate counters. Do not log null responses.

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This commit is contained in:
Chris Rienzo 2016-04-12 15:23:49 -04:00
parent 7a369b57f1
commit 49f1d31290
2 changed files with 42 additions and 20 deletions
src/mod/applications/mod_hiredis
hiredis_profile.cmod_hiredis.c

4
src/mod/applications/mod_hiredis/hiredis_profile.c

@ -202,7 +202,9 @@ static hiredis_context_t *hiredis_profile_get_context(hiredis_profile_t *profile
static switch_status_t hiredis_context_execute_sync(hiredis_context_t *context, const char *data, char **resp, switch_core_session_t *session)
{
redisReply *response = redisCommand(context->context, data);
redisReply *response;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "hiredis: %s\n", data);
response = redisCommand(context->context, data);
if ( !response ) {
*resp = NULL;
return SWITCH_STATUS_GENERR;

58
src/mod/applications/mod_hiredis/mod_hiredis.c

@ -66,10 +66,10 @@ SWITCH_STANDARD_APP(raw_app)
}
if ( hiredis_profile_execute_sync(profile, cmd, &response, session) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n", profile_name, cmd, response);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n", profile_name, cmd, response ? response : "");
}
switch_channel_set_variable(channel, "hiredis_raw_response", response);
switch_channel_set_variable(channel, "hiredis_raw_response", response ? response : "");
done:
switch_safe_free(profile_name);
@ -108,7 +108,9 @@ SWITCH_STANDARD_API(raw_api)
switch_goto_status(SWITCH_STATUS_GENERR, done);
}
stream->write_function(stream, response);
if (response) {
stream->write_function(stream, response);
}
done:
switch_safe_free(input);
switch_safe_free(response);
@ -135,6 +137,11 @@ SWITCH_LIMIT_INCR(hiredis_limit_incr)
switch_goto_status(SWITCH_STATUS_GENERR, done);
}
if ( interval < 0 ) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "hiredis: interval must be >= 0\n");
switch_goto_status(SWITCH_STATUS_GENERR, done);
}
profile = switch_core_hash_find(mod_hiredis_globals.profiles, realm);
if ( !profile ) {
@ -160,7 +167,16 @@ SWITCH_LIMIT_INCR(hiredis_limit_incr)
switch_goto_status(SWITCH_STATUS_GENERR, done);
}
switch_channel_set_variable(channel, "hiredis_raw_response", response);
/* set expiration for interval on first increment */
if ( interval && !strcmp("1", response ? response : "") ) {
char *expire_response = NULL;
char *expire_cmd = switch_mprintf("expire %s %d", limit_key, interval);
hiredis_profile_execute_sync(profile, expire_cmd, &expire_response, session);
switch_safe_free(expire_cmd);
switch_safe_free(expire_response);
}
switch_channel_set_variable(channel, "hiredis_raw_response", response ? response : "");
limit_pvt = switch_core_alloc(session_pool, sizeof(hiredis_limit_pvt_t));
limit_pvt->next = switch_channel_get_private(channel, "hiredis_limit_pvt");
@ -171,7 +187,7 @@ SWITCH_LIMIT_INCR(hiredis_limit_incr)
limit_pvt->interval = interval;
switch_channel_set_private(channel, "hiredis_limit_pvt", limit_pvt);
count = atoll(response);
count = atoll(response ? response : "");
if ( !count || count > max ) {
switch_goto_status(SWITCH_STATUS_GENERR, done);
@ -200,17 +216,20 @@ SWITCH_LIMIT_RELEASE(hiredis_limit_release)
hiredis_limit_pvt_t *tmp = limit_pvt;
while (tmp) {
profile = switch_core_hash_find(mod_hiredis_globals.profiles, limit_pvt->realm);
hashkey = switch_mprintf("decr %s", tmp->limit_key);
/* Rate limited resources are not auto-decremented, they will expire. */
if (!tmp->interval) {
profile = switch_core_hash_find(mod_hiredis_globals.profiles, limit_pvt->realm);
hashkey = switch_mprintf("decr %s", tmp->limit_key);
if ( hiredis_profile_execute_sync(profile, hashkey, &response, session) != SWITCH_STATUS_SUCCESS ) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n",
tmp->realm, hashkey, response);
if ( hiredis_profile_execute_sync(profile, hashkey, &response, session) != SWITCH_STATUS_SUCCESS ) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n",
tmp->realm, hashkey, response ? response : "");
}
switch_safe_free(response);
switch_safe_free(hashkey);
}
tmp = tmp->next;
switch_safe_free(response);
switch_safe_free(hashkey);
}
} else {
profile = switch_core_hash_find(mod_hiredis_globals.profiles, limit_pvt->realm);
@ -222,12 +241,12 @@ SWITCH_LIMIT_RELEASE(hiredis_limit_release)
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, "hiredis: ignoring profile[%s] connection error executing [%s]\n", realm, hashkey);
switch_goto_status(SWITCH_STATUS_SUCCESS, done);
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n", realm, hashkey, response);
switch_channel_set_variable(channel, "hiredis_raw_response", response);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n", realm, hashkey, response ? response : "");
switch_channel_set_variable(channel, "hiredis_raw_response", response ? response : "");
switch_goto_status(SWITCH_STATUS_GENERR, done);
}
switch_channel_set_variable(channel, "hiredis_raw_response", response);
switch_channel_set_variable(channel, "hiredis_raw_response", response ? response : "");
}
done:
@ -258,11 +277,11 @@ SWITCH_LIMIT_USAGE(hiredis_limit_usage)
hashkey = switch_mprintf("get %s", resource);
if ( hiredis_profile_execute_sync(profile, hashkey, &response, NULL) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n", realm, hashkey, response);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n", realm, hashkey, response ? response : "");
goto err;
}
count = atoll(response);
count = atoll(response ? response : "");
switch_safe_free(response);
switch_safe_free(hashkey);
@ -290,6 +309,7 @@ SWITCH_LIMIT_RESET(hiredis_limit_reset)
*/
SWITCH_LIMIT_INTERVAL_RESET(hiredis_limit_interval_reset)
{
/* TODO this doesn't work since the key has the interval in it */
hiredis_profile_t *profile = switch_core_hash_find(mod_hiredis_globals.profiles, realm);
switch_status_t status = SWITCH_STATUS_SUCCESS;
char *hashkey = NULL, *response = NULL;
@ -307,7 +327,7 @@ SWITCH_LIMIT_INTERVAL_RESET(hiredis_limit_interval_reset)
hashkey = switch_mprintf("set %s 0", resource);
if ( hiredis_profile_execute_sync(profile, hashkey, &response, NULL) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n", realm, hashkey, response);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "hiredis: profile[%s] error executing [%s] because [%s]\n", realm, hashkey, response ? response : "");
switch_goto_status(SWITCH_STATUS_GENERR, done);
}