static protocol_binary_response_status delete_handler(const void *cookie,
const void *key,
uint16_t keylen,
uint64_t cas) {
(void)cookie;
protocol_binary_response_status rval= PROTOCOL_BINARY_RESPONSE_SUCCESS;
if (cas != 0)
{
struct item *item= get_item(key, keylen);
if (item != NULL)
{
if (item->cas != cas)
{
release_item(item);
return PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS;
}
release_item(item);
}
}
if (!delete_item(key, keylen))
{
rval= PROTOCOL_BINARY_RESPONSE_KEY_ENOENT;
}
return rval;
}
static protocol_binary_response_status add_handler(const void *cookie,
const void *key,
uint16_t keylen,
const void *data,
uint32_t datalen,
uint32_t flags,
uint32_t exptime,
uint64_t *cas)
{
(void)cookie;
protocol_binary_response_status rval= PROTOCOL_BINARY_RESPONSE_SUCCESS;
struct item* item= get_item(key, keylen);
if (item == NULL)
{
item= create_item(key, keylen, data, datalen, flags, (time_t)exptime);
if (item == 0)
{
rval= PROTOCOL_BINARY_RESPONSE_ENOMEM;
}
else
{
put_item(item);
*cas= item->cas;
release_item(item);
}
}
else
{
rval= PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS;
}
return rval;
}
static protocol_binary_response_status prepend_handler(const void *cookie,
const void *key,
uint16_t keylen,
const void* val,
uint32_t vallen,
uint64_t cas,
uint64_t *result_cas) {
(void)cookie;
protocol_binary_response_status rval= PROTOCOL_BINARY_RESPONSE_SUCCESS;
struct item *item= get_item(key, keylen);
struct item *nitem= NULL;
if (item == NULL)
{
rval= PROTOCOL_BINARY_RESPONSE_KEY_ENOENT;
}
else if (cas != 0 && cas != item->cas)
{
rval= PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS;
}
else if ((nitem= create_item(key, keylen, NULL, item->size + vallen,
item->flags, item->exp)) == NULL)
{
rval= PROTOCOL_BINARY_RESPONSE_ENOMEM;
}
else
{
memcpy(nitem->data, val, vallen);
memcpy(((char*)(nitem->data)) + vallen, item->data, item->size);
release_item(item);
item= NULL;
delete_item(key, keylen);
put_item(nitem);
*result_cas= nitem->cas;
}
if (item)
release_item(item);
if (nitem)
release_item(nitem);
return rval;
}
static protocol_binary_response_status decrement_handler(const void *cookie,
const void *key,
uint16_t keylen,
uint64_t delta,
uint64_t initial,
uint32_t expiration,
uint64_t *result,
uint64_t *result_cas) {
protocol_binary_response_status rval= PROTOCOL_BINARY_RESPONSE_SUCCESS;
uint64_t val= initial;
item_t *item;
(void)cookie;
mutex_lock(&storage_lock);
item = get_item(key, keylen);
if (item != NULL) {
if (delta > *(uint64_t*)item->data)
val= 0;
else
val= *(uint64_t*)item->data - delta;
expiration= (uint32_t)item->exp;
release_item(item);
delete_item(key, keylen);
}
item= create_item(key, keylen, NULL, sizeof(initial), 0, (time_t)expiration);
if (item == 0) {
rval= PROTOCOL_BINARY_RESPONSE_ENOMEM;
} else {
memcpy(item->data, &val, sizeof(val));
put_item(item);
*result= val;
*result_cas= item->cas;
release_item(item);
}
mutex_unlock(&storage_lock);
return rval;
}
static protocol_binary_response_status increment_handler(const void *cookie,
const void *key,
uint16_t keylen,
uint64_t delta,
uint64_t initial,
uint32_t expiration,
uint64_t *result,
uint64_t *result_cas) {
protocol_binary_response_status rval= PROTOCOL_BINARY_RESPONSE_SUCCESS;
uint64_t val= initial;
item_t *item;
(void)cookie;
mutex_lock(&storage_lock);
item = get_item(key, keylen);
if (item != NULL) {
val= (*(uint64_t*)item->data) + delta;
expiration= (uint32_t)item->exp;
release_item(item);
delete_item(key, keylen);
}
item= create_item(key, keylen, NULL, sizeof(initial), 0, (time_t)expiration);
if (item == NULL) {
rval= PROTOCOL_BINARY_RESPONSE_ENOMEM;
} else {
char buffer[1024] = {0}; // FIXME: does this need to be so big ~ajc
memcpy(buffer, key, keylen);
memcpy(item->data, &val, sizeof(val));
put_item(item);
*result= val;
*result_cas= item->cas;
release_item(item);
}
mutex_unlock(&storage_lock);
return rval;
}
static protocol_binary_response_status set_handler(const void *cookie,
const void *key,
uint16_t keylen,
const void* data,
uint32_t datalen,
uint32_t flags,
uint32_t exptime,
uint64_t cas,
uint64_t *result_cas) {
(void)cookie;
protocol_binary_response_status rval= PROTOCOL_BINARY_RESPONSE_SUCCESS;
if (cas != 0)
{
struct item* item= get_item(key, keylen);
if (item != NULL && cas != item->cas)
{
/* Invalid CAS value */
release_item(item);
return PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS;
}
}
delete_item(key, keylen);
struct item* item= create_item(key, keylen, data, datalen, flags, (time_t)exptime);
if (item == 0)
{
rval= PROTOCOL_BINARY_RESPONSE_ENOMEM;
}
else
{
put_item(item);
*result_cas= item->cas;
release_item(item);
}
return rval;
}
static protocol_binary_response_status replace_handler(const void *cookie,
const void *key,
uint16_t keylen,
const void* data,
uint32_t datalen,
uint32_t flags,
uint32_t exptime,
uint64_t cas,
uint64_t *result_cas) {
protocol_binary_response_status rval= PROTOCOL_BINARY_RESPONSE_SUCCESS;
item_t* item;
mutex_lock(&storage_lock);
(void)cookie;
item= get_item(key, keylen);
if (item == NULL) {
rval= PROTOCOL_BINARY_RESPONSE_KEY_ENOENT;
} else if (cas == 0 || cas == item->cas) {
release_item(item);
delete_item(key, keylen);
item= create_item(key, keylen, data, datalen, flags, (time_t)exptime);
if (item == 0) {
rval= PROTOCOL_BINARY_RESPONSE_ENOMEM;
} else {
put_item(item);
*result_cas= item->cas;
release_item(item);
}
} else {
rval= PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS;
release_item(item);
}
mutex_unlock(&storage_lock);
return rval;
}
static protocol_binary_response_status append_handler(const void *cookie,
const void *key,
uint16_t keylen,
const void* val,
uint32_t vallen,
uint64_t cas,
uint64_t *result_cas)
{
protocol_binary_response_status rval= PROTOCOL_BINARY_RESPONSE_SUCCESS;
item_t *item, *nitem;
mutex_lock(&storage_lock);
(void)cookie;
item= get_item(key, keylen);
if (item == NULL) {
rval= PROTOCOL_BINARY_RESPONSE_KEY_ENOENT;
} else if (cas != 0 && cas != item->cas) {
rval= PROTOCOL_BINARY_RESPONSE_KEY_EEXISTS;
} else if ((nitem= create_item(key, keylen, NULL, item->size + vallen,
item->flags, item->exp)) == NULL) {
release_item(item);
rval= PROTOCOL_BINARY_RESPONSE_ENOMEM;
} else {
memcpy(nitem->data, item->data, item->size);
memcpy(((char*)(nitem->data)) + item->size, val, vallen);
release_item(item);
delete_item(key, keylen);
put_item(nitem);
*result_cas= nitem->cas;
release_item(nitem);
}
mutex_unlock(&storage_lock);
return rval;
}
static protocol_binary_response_status get_handler(const void *cookie,
const void *key,
uint16_t keylen,
memcached_binary_protocol_get_response_handler response_handler) {
struct item *item= get_item(key, keylen);
if (item == NULL)
{
return PROTOCOL_BINARY_RESPONSE_KEY_ENOENT;
}
protocol_binary_response_status rc;
rc= response_handler(cookie, key, (uint16_t)keylen,
item->data, (uint32_t)item->size, item->flags,
item->cas);
release_item(item);
return rc;
}
