/**
* Check if a record exists in the cluster via its key.
*
* @param as The aerospike instance to use for this operation.
* @param err The as_error to be populated if an error occurs.
* @param policy The policy to use for this operation. If NULL, then the default policy will be used.
* @param key The key of the record.
* @param record The record to populated with metadata if record exists, otherwise NULL
*
* @return AEROSPIKE_OK if successful. Otherwise an error.
*/
as_status aerospike_key_exists(
aerospike * as, as_error * err, const as_policy_read * policy,
const as_key * key,
as_record ** rec)
{
// we want to reset the error so, we have a clean state
as_error_reset(err);
// resolve policies
as_policy_read p;
as_policy_read_resolve(&p, &as->config.policies, policy);
uint32_t timeout = p.timeout == UINT32_MAX ? 0 : p.timeout;
uint32_t gen = 0;
uint32_t ttl = 0; // TODO - a version of 'exists' that returns all metadata
int nvalues = 0;
cl_bin * values = NULL;
cl_rv rc = CITRUSLEAF_OK;
switch ( p.key ) {
case AS_POLICY_KEY_DIGEST: {
as_digest * digest = as_key_digest((as_key *) key);
rc = citrusleaf_exists_digest(as->cluster, key->ns, (cf_digest *) digest->value,
values, nvalues, timeout, &gen, &ttl);
break;
}
case AS_POLICY_KEY_SEND: {
cl_object okey;
asval_to_clobject((as_val *) key->valuep, &okey);
as_digest * digest = as_key_digest((as_key *) key);
rc = citrusleaf_exists_key(as->cluster, key->ns, key->set, &okey, (cf_digest*)digest->value,
values, nvalues, timeout, &gen, &ttl);
break;
}
default: {
// ERROR CASE
break;
}
}
if ( values != NULL ) {
// We are freeing the bins' objects, as opposed to bins themselves.
citrusleaf_bins_free(values, nvalues);
free(values);
}
switch(rc) {
case CITRUSLEAF_OK:
{
as_record * r = *rec;
if ( r == NULL ) {
r = as_record_new(0);
}
r->gen = (uint16_t) gen;
r->ttl = ttl;
*rec = r;
break;
}
default:
*rec = NULL;
break;
}
return as_error_fromrc(err,rc);
}
/**
* Check if a record exists in the cluster via its key.
*
* @param as The aerospike instance to use for this operation.
* @param err The as_error to be populated if an error occurs.
* @param policy The policy to use for this operation. If NULL, then the default policy will be used.
* @param key The key of the record.
* @param exists The variable to populate with `true` if the record exists, otherwise `false`.
*
* @return AEROSPIKE_OK if successful. Otherwise an error.
*/
as_status aerospike_key_exists(
aerospike * as, as_error * err, const as_policy_read * policy,
const as_key * key,
bool * exists)
{
// we want to reset the error so, we have a clean state
as_error_reset(err);
// resolve policies
as_policy_read p;
as_policy_read_resolve(&p, &as->config.policies, policy);
uint32_t timeout = p.timeout == UINT32_MAX ? 0 : p.timeout;
uint32_t gen = 0;
uint32_t ttl = 0; // TODO - a version of 'exists' that returns all metadata
int nvalues = 0;
cl_bin * values = NULL;
cl_rv rc = CITRUSLEAF_OK;
switch ( p.key ) {
case AS_POLICY_KEY_DIGEST: {
as_digest * digest = as_key_digest((as_key *) key);
rc = citrusleaf_exists_digest(as->cluster, key->ns, (cf_digest *) digest->value,
values, nvalues, timeout, &gen, &ttl);
break;
}
case AS_POLICY_KEY_SEND: {
cl_object okey;
asval_to_clobject((as_val *) key->valuep, &okey);
rc = citrusleaf_exists_key(as->cluster, key->ns, key->set, &okey,
values, nvalues, timeout, &gen, &ttl);
break;
}
default: {
// ERROR CASE
break;
}
}
if ( values != NULL ) {
free(values);
}
switch(rc) {
case CITRUSLEAF_OK:
if ( exists ) {
*exists = true;
}
return AEROSPIKE_OK;
case CITRUSLEAF_FAIL_NOTFOUND:
if ( exists ) {
*exists = false;
}
return AEROSPIKE_OK;
default:
if ( exists ) {
*exists = false;
}
return as_error_fromrc(err,rc);
}
}
