static void
asc_process_aggregate(struct conn *c, struct token *token, int ntoken)
{
int32_t interval;
if (ntoken != 4) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
if (!mc_strtol(token[TOKEN_AGGR_COMMAND].val, &interval)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d with "
"invalid option '%.*s'", c->sd, c->req_type,
token[TOKEN_AGGR_COMMAND].len, token[TOKEN_AGGR_COMMAND].val);
asc_write_client_error(c);
return;
}
if (interval > 0) {
stats_set_interval(interval);
asc_write_ok(c);
} else if (interval == 0) {
stats_set_interval(STATS_DEFAULT_INTVL);
asc_write_ok(c);
} else {
stats_set_interval(-1000000);
asc_write_ok(c);
}
}
static void
asc_process_evict(struct conn *c, struct token *token, int ntoken)
{
int32_t option;
if (ntoken != 4) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
if (!mc_strtol(token[TOKEN_EVICT_COMMAND].val, &option)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d with "
"invalid option '%.*s'", c->sd, c->req_type,
token[TOKEN_EVICT_COMMAND].len,token[TOKEN_EVICT_COMMAND].val);
asc_write_client_error(c);
return;
}
if (option >= EVICT_NONE && option < EVICT_INVALID) {
settings.evict_opt = option;
asc_write_ok(c);
return;
}
log_debug(LOG_NOTICE, "client error on c %d for req of type %d with "
"invalid option %"PRId32"", c->sd, c->req_type, option);
asc_write_client_error(c);
}
static void
asc_process_verbosity(struct conn *c, struct token *token, int ntoken)
{
uint32_t level;
asc_set_noreply_maybe(c, token, ntoken);
if (ntoken != 3 && ntoken != 4) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
if (!mc_strtoul(token[TOKEN_SUBCOMMAND].val, &level)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d with "
"invalid level '%.*s'", c->sd, c->req_type,
token[TOKEN_SUBCOMMAND].len, token[TOKEN_SUBCOMMAND].val);
asc_write_client_error(c);
return;
}
log_level_set(level);
asc_write_ok(c);
}
static void
asc_process_flushall(struct conn *c, struct token *token, int ntoken)
{
struct bound *t = &ntoken_bound[REQ_FLUSHALL];
int32_t exptime_int;
time_t exptime;
time_update();
asc_set_noreply_maybe(c, token, ntoken);
if (!asc_ntoken_valid(c, ntoken)) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
if (ntoken == t->b[c->noreply].min) {
settings.oldest_live = time_now() - 1;
item_flush_expired();
asc_write_ok(c);
return;
}
if (!mc_strtol(token[TOKEN_SUBCOMMAND].val, &exptime_int)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d with "
"invalid numeric value '%.*s'", c->sd, c->req_type,
token[TOKEN_SUBCOMMAND].len, token[TOKEN_SUBCOMMAND].val);
asc_write_client_error(c);
return;
}
exptime = (time_t)exptime_int;
/*
* If exptime is zero time_reltime() would return zero too, and
* time_reltime(exptime) - 1 would overflow to the max unsigned value.
* So we process exptime == 0 the same way we do when no delay is
* given at all.
*/
if (exptime > 0) {
settings.oldest_live = time_reltime(exptime) - 1;
} else {
/* exptime == 0 */
settings.oldest_live = time_now() - 1;
}
item_flush_expired();
asc_write_ok(c);
}
static void
asc_process_delete(struct conn *c, struct token *token, int ntoken)
{
char *key; /* key to be deleted */
size_t nkey; /* # key bytes */
struct item *it; /* item for this key */
asc_set_noreply_maybe(c, token, ntoken);
if (!asc_ntoken_valid(c, ntoken)) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
key = token[TOKEN_KEY].val;
nkey = token[TOKEN_KEY].len;
if (nkey > KEY_MAX_LEN) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d and %d "
"length key", c->sd, c->req_type, nkey);
asc_write_client_error(c);
return;
}
/*
* FIXME: This is not thread-safe, two threads could try to delete the same
* item twice after succeeding in item_get, leading to erroneous stats
*/
it = item_get(key, nkey);
if (it != NULL) {
stats_slab_incr(it->id, delete_hit);
item_delete(it);
asc_write_deleted(c);
} else {
stats_thread_incr(delete_miss);
asc_write_not_found(c);
}
}
static void
asc_process_delete(struct conn *c, struct token *token, int ntoken)
{
char *key; /* key to be deleted */
size_t nkey; /* # key bytes */
struct item *it; /* item for this key */
asc_set_noreply_maybe(c, token, ntoken);
if (!asc_ntoken_valid(c, ntoken)) {
log_hexdump(LOG_INFO, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
key = token[TOKEN_KEY].val;
nkey = token[TOKEN_KEY].len;
if (nkey > KEY_MAX_LEN) {
log_debug(LOG_INFO, "client error on c %d for req of type %d and %d "
"length key", c->sd, c->req_type, nkey);
asc_write_client_error(c);
return;
}
it = item_get(key, nkey);
if (it != NULL) {
stats_slab_incr(it->id, delete_hit);
item_unlink(it);
item_remove(it);
asc_write_deleted(c);
} else {
stats_thread_incr(delete_miss);
asc_write_not_found(c);
}
}
/*
* We get here after reading the value in update commands. The command
* is stored in c->req_type, and the item is ready in c->item.
*/
void
asc_complete_nread(struct conn *c)
{
item_store_result_t ret;
struct item *it;
char *end;
it = c->item;
end = item_data(it) + it->nbyte;
if (!strcrlf(end)) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with missing crlf", c->sd, c->req_type);
asc_write_client_error(c);
} else {
ret = item_store(it, c->req_type, c);
switch (ret) {
case STORED:
asc_write_stored(c);
break;
case EXISTS:
asc_write_exists(c);
break;
case NOT_FOUND:
asc_write_not_found(c);
break;
case NOT_STORED:
asc_write_not_stored(c);
break;
default:
log_warn("server error on c %d for req of type %d with unknown "
"store result %d", c->sd, c->req_type, ret);
asc_write_server_error(c);
break;
}
}
item_remove(c->item);
c->item = NULL;
}
static void
asc_process_stats(struct conn *c, struct token *token, int ntoken)
{
struct token *t = &token[TOKEN_SUBCOMMAND];
if (!stats_enabled()) {
log_warn("server error on c %d for req of type %d because stats is "
"disabled", c->sd, c->req_type);
asc_write_server_error(c);
return;
}
if (!asc_ntoken_valid(c, ntoken)) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
if (ntoken == 2) {
stats_default(c);
} else if (strncmp(t->val, "reset", t->len) == 0) {
log_warn("server error on c %d for req of type %d because stats reset "
"is not supported", c->sd, c->req_type);
asc_write_server_error(c);
return;
} else if (strncmp(t->val, "settings", t->len) == 0) {
stats_settings(c);
} else if (strncmp(t->val, "cachedump", t->len) == 0) {
char *buf;
unsigned int bytes, id, limit = 0;
if (ntoken < 5) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d "
"for req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
if (!mc_strtoul(token[TOKEN_CACHEDUMP_ID].val, &id) ||
!mc_strtoul(token[TOKEN_CACHEDUMP_LIMIT].val, &limit)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d "
"because either id '%.*s' or limit '%.*s' is invalid",
c->sd, c->req_type, token[TOKEN_CACHEDUMP_ID].len,
token[TOKEN_CACHEDUMP_ID].val, token[TOKEN_CACHEDUMP_LIMIT].len,
token[TOKEN_CACHEDUMP_LIMIT].val);
asc_write_client_error(c);
return;
}
if (id < SLABCLASS_MIN_ID || id > SLABCLASS_MAX_ID) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d "
"because %d is an illegal slab id", c->sd, c->req_type,
id);
asc_write_client_error(c);
return;
}
buf = item_cache_dump(id, limit, &bytes);
core_write_and_free(c, buf, bytes);
return;
} else {
/*
* Getting here means that the sub command is either engine specific
* or is invalid. query the engine and see
*/
if (strncmp(t->val, "slabs", t->len) == 0) {
stats_slabs(c);
} else if (strncmp(t->val, "sizes", t->len) == 0) {
stats_sizes(c);
} else {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d with "
"invalid stats subcommand '%.*s", c->sd, c->req_type,
t->len, t->val);
asc_write_client_error(c);
return;
}
if (c->stats.buffer == NULL) {
log_warn("server error on c %d for req of type %d because of oom "
"writing stats", c->sd, c->req_type);
asc_write_server_error(c);
} else {
core_write_and_free(c, c->stats.buffer, c->stats.offset);
c->stats.buffer = NULL;
}
return;
}
/* append terminator and start the transfer */
stats_append(c, NULL, 0, NULL, 0);
if (c->stats.buffer == NULL) {
log_warn("server error on c %d for req of type %d because of oom "
"writing stats", c->sd, c->req_type);
asc_write_server_error(c);
} else {
core_write_and_free(c, c->stats.buffer, c->stats.offset);
c->stats.buffer = NULL;
}
}
static void
asc_process_arithmetic(struct conn *c, struct token *token, int ntoken)
{
item_delta_result_t res;
char temp[INCR_MAX_STORAGE_LEN];
uint64_t delta;
char *key;
size_t nkey;
bool incr;
asc_set_noreply_maybe(c, token, ntoken);
if (!asc_ntoken_valid(c, ntoken)) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
incr = (c->req_type == REQ_INCR) ? true : false;
key = token[TOKEN_KEY].val;
nkey = token[TOKEN_KEY].len;
if (nkey > KEY_MAX_LEN) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d and %d "
"length key", c->sd, c->req_type, nkey);
asc_write_client_error(c);
return;
}
if (!mc_strtoull(token[TOKEN_DELTA].val, &delta)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d with "
"invalid delta '%.*s'", c->sd, c->req_type,
token[TOKEN_DELTA].len, token[TOKEN_DELTA].val);
asc_write_client_error(c);
return;
}
res = item_add_delta(c, key, nkey, incr, delta, temp);
switch (res) {
case DELTA_OK:
asc_write_string(c, temp, strlen(temp));
klog_write(c->peer, c->req_type, c->req, c->req_len, res, strlen(temp));
break;
case DELTA_NON_NUMERIC:
log_debug(LOG_NOTICE, "client error on c %d for req of type %d with "
"non-numeric value", c->sd, c->req_type);
asc_write_client_error(c);
break;
case DELTA_EOM:
log_warn("server error on c %d for req of type %d because of oom",
c->sd, c->req_type);
asc_write_server_error(c);
break;
case DELTA_NOT_FOUND:
if (incr) {
stats_thread_incr(incr_miss);
} else {
stats_thread_incr(decr_miss);
}
asc_write_not_found(c);
break;
default:
NOT_REACHED();
break;
}
}
static void
asc_process_update(struct conn *c, struct token *token, int ntoken)
{
char *key;
size_t nkey;
uint32_t flags, vlen;
int32_t exptime_int;
time_t exptime;
uint64_t req_cas_id = 0;
struct item *it;
bool handle_cas;
req_type_t type;
uint8_t id;
asc_set_noreply_maybe(c, token, ntoken);
if (!asc_ntoken_valid(c, ntoken)) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
type = c->req_type;
handle_cas = (type == REQ_CAS) ? true : false;
key = token[TOKEN_KEY].val;
nkey = token[TOKEN_KEY].len;
if (nkey > KEY_MAX_LEN) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d and %d "
"length key", c->sd, c->req_type, nkey);
asc_write_client_error(c);
return;
}
if (!mc_strtoul(token[TOKEN_FLAGS].val, &flags)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d and "
"invalid flags '%.*s'", c->sd, c->req_type,
token[TOKEN_FLAGS].len, token[TOKEN_FLAGS].val);
asc_write_client_error(c);
return;
}
if (!mc_strtol(token[TOKEN_EXPIRY].val, &exptime_int)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d and "
"invalid expiry '%.*s'", c->sd, c->req_type,
token[TOKEN_EXPIRY].len, token[TOKEN_EXPIRY].val);
asc_write_client_error(c);
return;
}
if (!mc_strtoul(token[TOKEN_VLEN].val, &vlen)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d and "
"invalid vlen '%.*s'", c->sd, c->req_type,
token[TOKEN_VLEN].len, token[TOKEN_VLEN].val);
asc_write_client_error(c);
return;
}
id = item_slabid(nkey, vlen);
if (id == SLABCLASS_INVALID_ID) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d and "
"slab id out of range for key size %"PRIu8" and value size "
"%"PRIu32, c->sd, c->req_type, nkey, vlen);
asc_write_client_error(c);
return;
}
exptime = (time_t)exptime_int;
/* does cas value exist? */
if (handle_cas) {
if (!mc_strtoull(token[TOKEN_CAS].val, &req_cas_id)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d and "
"invalid cas '%.*s'", c->sd, c->req_type,
token[TOKEN_CAS].len, token[TOKEN_CAS].val);
asc_write_client_error(c);
return;
}
}
it = item_alloc(id, key, nkey, flags, time_reltime(exptime), vlen);
if (it == NULL) {
log_warn("server error on c %d for req of type %d because of oom in "
"storing item", c->sd, c->req_type);
asc_write_server_error(c);
/* swallow the data line */
c->write_and_go = CONN_SWALLOW;
c->sbytes = vlen + CRLF_LEN;
/*
* Avoid stale data persisting in cache because we failed alloc.
* Unacceptable for SET. Anywhere else too?
*
* FIXME: either don't delete anything or should be unacceptable for
* all but add.
*/
if (type == REQ_SET) {
it = item_get(key, nkey);
if (it != NULL) {
item_delete(it);
}
}
return;
}
item_set_cas(it, req_cas_id);
c->item = it;
c->ritem = item_data(it);
c->rlbytes = it->nbyte + CRLF_LEN;
conn_set_state(c, CONN_NREAD);
}
static inline void
asc_process_read(struct conn *c, struct token *token, int ntoken)
{
rstatus_t status;
char *key;
size_t nkey;
unsigned valid_key_iter = 0;
struct item *it;
struct token *key_token;
bool return_cas;
if (!asc_ntoken_valid(c, ntoken)) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
return_cas = (c->req_type == REQ_GETS) ? true : false;
key_token = &token[TOKEN_KEY];
do {
while (key_token->len != 0) {
key = key_token->val;
nkey = key_token->len;
if (nkey > KEY_MAX_LEN) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d "
"and %d length key", c->sd, c->req_type, nkey);
asc_write_client_error(c);
return;
}
if (return_cas) {
stats_thread_incr(gets);
} else {
stats_thread_incr(get);
}
it = item_get(key, nkey);
if (it != NULL) {
/* item found */
if (return_cas) {
stats_slab_incr(it->id, gets_hit);
} else {
stats_slab_incr(it->id, get_hit);
}
if (valid_key_iter >= c->isize) {
struct item **new_list;
new_list = mc_realloc(c->ilist, sizeof(struct item *) * c->isize * 2);
if (new_list != NULL) {
c->isize *= 2;
c->ilist = new_list;
} else {
item_remove(it);
break;
}
}
status = asc_respond_get(c, valid_key_iter, it, return_cas);
if (status != MC_OK) {
log_debug(LOG_NOTICE, "client error on c %d for req of type "
"%d with %d tokens", c->sd, c->req_type, ntoken);
stats_thread_incr(cmd_error);
item_remove(it);
break;
}
log_debug(LOG_VVERB, ">%d sending key %.*s", c->sd, it->nkey,
item_key(it));
item_touch(it);
*(c->ilist + valid_key_iter) = it;
valid_key_iter++;
} else {
/* item not found */
if (return_cas) {
stats_thread_incr(gets_miss);
} else {
stats_thread_incr(get_miss);
}
klog_write(c->peer, c->req_type, key, nkey, 1, 0);
}
key_token++;
}
/*
* If the command string hasn't been fully processed, get the next set
* of token.
*/
if (key_token->val != NULL) {
ntoken = asc_tokenize(key_token->val, token, TOKEN_MAX);
/* ntoken is unused */
key_token = token;
}
} while (key_token->val != NULL);
c->icurr = c->ilist;
c->ileft = valid_key_iter;
if (return_cas) {
c->scurr = c->slist;
c->sleft = valid_key_iter;
}
log_debug(LOG_VVERB, ">%d END", c->sd);
/*
* If the loop was terminated because of out-of-memory, it is not
* reliable to add END\r\n to the buffer, because it might not end
* in \r\n. So we send SERVER_ERROR instead.
*/
if (key_token->val != NULL || conn_add_iov(c, "END\r\n", 5) != MC_OK ||
(c->udp && conn_build_udp_headers(c) != MC_OK)) {
log_warn("server error on c %d for req of type %d with enomem", c->sd,
c->req_type);
asc_write_server_error(c);
} else {
conn_set_state(c, CONN_MWRITE);
c->msg_curr = 0;
}
}
static void
asc_dispatch(struct conn *c)
{
rstatus_t status;
struct token token[TOKEN_MAX];
int ntoken;
/*
* For commands set, add, or replace, we build an item and read the data
* directly into it, then continue in asc_complete_nread().
*/
c->msg_curr = 0;
c->msg_used = 0;
c->iov_used = 0;
status = conn_add_msghdr(c);
if (status != MC_OK) {
log_warn("server error on c %d for req of type %d because of oom in "
"preparing response", c->sd, c->req_type);
asc_write_server_error(c);
return;
}
ntoken = asc_tokenize(c->req, token, TOKEN_MAX);
c->req_type = asc_parse_type(c, token, ntoken);
switch (c->req_type) {
case REQ_GET:
case REQ_GETS:
/* we do not update stats metrics here because of multi-get */
asc_process_read(c, token, ntoken);
break;
case REQ_SET:
stats_thread_incr(set);
asc_process_update(c, token, ntoken);
break;
case REQ_ADD:
stats_thread_incr(add);
asc_process_update(c, token, ntoken);
break;
case REQ_REPLACE:
stats_thread_incr(replace);
asc_process_update(c, token, ntoken);
break;
case REQ_APPEND:
stats_thread_incr(append);
asc_process_update(c, token, ntoken);
break;
case REQ_PREPEND:
stats_thread_incr(prepend);
asc_process_update(c, token, ntoken);
break;
case REQ_CAS:
stats_thread_incr(cas);
asc_process_update(c, token, ntoken);
break;
case REQ_INCR:
stats_thread_incr(incr);
asc_process_arithmetic(c, token, ntoken);
break;
case REQ_DECR:
stats_thread_incr(decr);
asc_process_arithmetic(c, token, ntoken);
break;
case REQ_DELETE:
stats_thread_incr(delete);
asc_process_delete(c, token, ntoken);
break;
case REQ_STATS:
stats_thread_incr(stats);
asc_process_stats(c, token, ntoken);
break;
case REQ_FLUSHALL:
stats_thread_incr(flush);
asc_process_flushall(c, token, ntoken);
break;
case REQ_VERSION:
asc_write_version(c);
break;
case REQ_QUIT:
conn_set_state(c, CONN_CLOSE);
break;
case REQ_VERBOSITY:
asc_process_verbosity(c, token, ntoken);
break;
case REQ_CONFIG:
asc_process_config(c, token, ntoken);
break;
case REQ_UNKNOWN:
default:
log_hexdump(LOG_INFO, c->req, c->req_len, "req on c %d with %d "
"invalid tokens", c->sd, ntoken);
asc_write_client_error(c);
break;
}
}
static void
asc_process_klog(struct conn *c, struct token *token, int ntoken)
{
struct token *t;
if (!asc_ntoken_valid(c, ntoken)) {
log_hexdump(LOG_NOTICE, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
t = &token[TOKEN_KLOG_COMMAND];
if (strncmp(t->val, "run", t->len) == 0) {
if (settings.klog_name == NULL) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d "
"with klog filename not set", c->sd, c->req_type);
asc_write_client_error(c);
return;
}
t = &token[TOKEN_KLOG_SUBCOMMAND];
if (strncmp(t->val, "start", t->len) == 0) {
log_debug(LOG_NOTICE, "klog start at epoch %u", time_now());
settings.klog_running = true;
asc_write_ok(c);
} else if (strncmp(t->val, "stop", t->len) == 0) {
log_debug(LOG_NOTICE, "klog stops at epoch %u", time_now());
settings.klog_running = false;
asc_write_ok(c);
} else {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d "
"with invalid klog run subcommand '%.*s'", c->sd,
c->req_type, t->len, t->val);
asc_write_client_error(c);
}
} else if (strncmp(t->val, "interval", t->len) == 0) {
t = &token[TOKEN_KLOG_SUBCOMMAND];
if (strncmp(t->val, "reset", t->len) == 0) {
stats_set_interval(STATS_DEFAULT_INTVL);
asc_write_ok(c);
} else {
int32_t interval;
if (!mc_strtol(t->val, &interval)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d "
"with invalid klog interval '%.*s'", c->sd,
c->req_type, t->len, t->val);
asc_write_client_error(c);
} else if (interval < KLOG_MIN_INTVL) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d "
"with invalid klog interval %"PRId32"", c->sd,
c->req_type, interval);
asc_write_client_error(c);
} else {
stats_set_interval(interval);
asc_write_ok(c);
}
}
} else if (strncmp(t->val, "sampling", t->len) == 0) {
t = &token[TOKEN_KLOG_SUBCOMMAND];
if (strncmp(t->val, "reset", t->len) == 0) {
settings.klog_sampling_rate = KLOG_DEFAULT_SMP_RATE;
asc_write_ok(c);
} else {
int32_t sampling;
if (!mc_strtol(t->val, &sampling)) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d "
"with invalid klog sampling '%.*s'", c->sd,
c->req_type, t->len, t->val);
asc_write_client_error(c);
} else if (sampling <= 0) {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d "
"with invalid klog sampling %"PRId32"", c->sd,
c->req_type, sampling);
asc_write_client_error(c);
} else {
settings.klog_sampling_rate = sampling;
asc_write_ok(c);
}
}
} else {
log_debug(LOG_NOTICE, "client error on c %d for req of type %d with "
"invalid klog subcommand '%.*s'", c->sd, c->req_type,
t->len, t->val);
asc_write_client_error(c);
}
}
static void
asc_process_update(struct conn *c, struct token *token, int ntoken)
{
char *key;
size_t nkey;
unsigned int flags;
int32_t exptime_int;
time_t exptime;
int vlen;
uint64_t req_cas_id = 0;
struct item *it;
bool handle_cas;
req_type_t type;
asc_set_noreply_maybe(c, token, ntoken);
if (!asc_ntoken_valid(c, ntoken)) {
log_hexdump(LOG_INFO, c->req, c->req_len, "client error on c %d for "
"req of type %d with %d invalid tokens", c->sd,
c->req_type, ntoken);
asc_write_client_error(c);
return;
}
type = c->req_type;
handle_cas = (type == REQ_CAS) ? true : false;
key = token[TOKEN_KEY].val;
nkey = token[TOKEN_KEY].len;
if (nkey > KEY_MAX_LEN) {
log_debug(LOG_INFO, "client error on c %d for req of type %d and %d "
"length key", c->sd, c->req_type, nkey);
asc_write_client_error(c);
return;
}
if (!mc_strtoul(token[TOKEN_FLAGS].val, (uint32_t *)&flags)) {
log_debug(LOG_INFO, "client error on c %d for req of type %d and "
"invalid flags '%.*s'", c->sd, c->req_type,
token[TOKEN_FLAGS].len, token[TOKEN_FLAGS].val);
asc_write_client_error(c);
return;
}
if (!mc_strtol(token[TOKEN_EXPIRY].val, &exptime_int)) {
log_debug(LOG_INFO, "client error on c %d for req of type %d and "
"invalid expiry '%.*s'", c->sd, c->req_type,
token[TOKEN_EXPIRY].len, token[TOKEN_EXPIRY].val);
asc_write_client_error(c);
return;
}
if (!mc_strtol(token[TOKEN_VLEN].val, (int32_t *)&vlen)) {
log_debug(LOG_INFO, "client error on c %d for req of type %d and "
"invalid vlen '%.*s'", c->sd, c->req_type,
token[TOKEN_VLEN].len, token[TOKEN_VLEN].val);
asc_write_client_error(c);
return;
}
exptime = (time_t)exptime_int;
/* does cas value exist? */
if (handle_cas) {
if (!mc_strtoull(token[TOKEN_CAS].val, &req_cas_id)) {
log_debug(LOG_INFO, "client error on c %d for req of type %d and "
"invalid cas '%.*s'", c->sd, c->req_type,
token[TOKEN_CAS].len, token[TOKEN_CAS].val);
asc_write_client_error(c);
return;
}
}
if (vlen < 0) {
log_debug(LOG_INFO, "client error on c %d for req of type %d and "
"invalid vlen %d", c->sd, c->req_type, vlen);
asc_write_client_error(c);
return;
}
vlen += CRLF_LEN;
it = item_alloc(key, nkey, flags, time_reltime(exptime), vlen);
if (it == NULL) {
log_debug(LOG_DEBUG, "server error on c %d for req of type %d because "
"of oom in storing item", c->sd, c->req_type);
asc_write_server_error(c);
/* swallow the data line */
c->write_and_go = CONN_SWALLOW;
c->sbytes = vlen;
/*
* Avoid stale data persisting in cache because we failed alloc.
* Unacceptable for SET. Anywhere else too?
*/
if (type == REQ_SET) {
it = item_get(key, nkey);
if (it != NULL) {
item_unlink(it);
item_remove(it);
}
}
return;
}
item_set_cas(it, req_cas_id);
c->item = it;
c->ritem = item_data(it);
c->rlbytes = it->nbyte;
conn_set_state(c, CONN_NREAD);
}