int
as_msg_swap_ops(as_msg *m, void *limit)
{
as_msg_op *op = 0;
int *n = 0; // 0ing actually not necessary
while ((op = as_msg_op_iterate(m, op, n))) {
if ((void*)op >= limit) return(-1);
as_msg_swap_op(op);
}
return(0);
}
// Create bin name list from message.
static cf_vector*
as_binlist_from_op(as_msg* msg)
{
if (msg->n_ops == 0) {
return 0;
}
cf_vector* binlist = cf_vector_create(AS_ID_BIN_SZ, 5, 0);
as_msg_op* op = 0;
int n = 0;
int len;
char name[AS_ID_BIN_SZ];
while ((op = as_msg_op_iterate(msg, op, &n))) {
len = (op->name_sz <= AS_ID_BIN_SZ - 1)? op->name_sz : AS_ID_BIN_SZ - 1;
memcpy(name, op->name, len);
name[len] = 0;
cf_vector_append(binlist, name);
}
return binlist;
}
transaction_status
read_local(as_transaction* tr)
{
as_msg* m = &tr->msgp->msg;
as_namespace* ns = tr->rsv.ns;
as_index_ref r_ref;
if (as_record_get(tr->rsv.tree, &tr->keyd, &r_ref) != 0) {
read_local_done(tr, NULL, NULL, AS_ERR_NOT_FOUND);
return TRANS_DONE_ERROR;
}
as_record* r = r_ref.r;
// Check if it's an expired or truncated record.
if (as_record_is_doomed(r, ns)) {
read_local_done(tr, &r_ref, NULL, AS_ERR_NOT_FOUND);
return TRANS_DONE_ERROR;
}
int result = repl_state_check(r, tr);
if (result != 0) {
if (result == -3) {
read_local_done(tr, &r_ref, NULL, AS_ERR_UNAVAILABLE);
return TRANS_DONE_ERROR;
}
// No response sent to origin.
as_record_done(&r_ref, ns);
return result == 1 ? TRANS_IN_PROGRESS : TRANS_WAITING;
}
// Check if it's a tombstone.
if (! as_record_is_live(r)) {
read_local_done(tr, &r_ref, NULL, AS_ERR_NOT_FOUND);
return TRANS_DONE_ERROR;
}
as_storage_rd rd;
as_storage_record_open(ns, r, &rd);
// If configuration permits, allow reads to use page cache.
rd.read_page_cache = ns->storage_read_page_cache;
// Check the key if required.
// Note - for data-not-in-memory "exists" ops, key check is expensive!
if (as_transaction_has_key(tr) &&
as_storage_record_get_key(&rd) && ! check_msg_key(m, &rd)) {
read_local_done(tr, &r_ref, &rd, AS_ERR_KEY_MISMATCH);
return TRANS_DONE_ERROR;
}
if ((m->info1 & AS_MSG_INFO1_GET_NO_BINS) != 0) {
tr->generation = r->generation;
tr->void_time = r->void_time;
tr->last_update_time = r->last_update_time;
read_local_done(tr, &r_ref, &rd, AS_OK);
return TRANS_DONE_SUCCESS;
}
if ((result = as_storage_rd_load_n_bins(&rd)) < 0) {
cf_warning_digest(AS_RW, &tr->keyd, "{%s} read_local: failed as_storage_rd_load_n_bins() ", ns->name);
read_local_done(tr, &r_ref, &rd, -result);
return TRANS_DONE_ERROR;
}
as_bin stack_bins[ns->storage_data_in_memory ? 0 : rd.n_bins];
if ((result = as_storage_rd_load_bins(&rd, stack_bins)) < 0) {
cf_warning_digest(AS_RW, &tr->keyd, "{%s} read_local: failed as_storage_rd_load_bins() ", ns->name);
read_local_done(tr, &r_ref, &rd, -result);
return TRANS_DONE_ERROR;
}
if (! as_bin_inuse_has(&rd)) {
cf_warning_digest(AS_RW, &tr->keyd, "{%s} read_local: found record with no bins ", ns->name);
read_local_done(tr, &r_ref, &rd, AS_ERR_UNKNOWN);
return TRANS_DONE_ERROR;
}
uint32_t bin_count = (m->info1 & AS_MSG_INFO1_GET_ALL) != 0 ?
rd.n_bins : m->n_ops;
as_msg_op* ops[bin_count];
as_msg_op** p_ops = ops;
as_bin* response_bins[bin_count];
uint16_t n_bins = 0;
as_bin result_bins[bin_count];
uint32_t n_result_bins = 0;
if ((m->info1 & AS_MSG_INFO1_GET_ALL) != 0) {
p_ops = NULL;
n_bins = rd.n_bins;
as_bin_get_all_p(&rd, response_bins);
}
else {
if (m->n_ops == 0) {
cf_warning_digest(AS_RW, &tr->keyd, "{%s} read_local: bin op(s) expected, none present ", ns->name);
read_local_done(tr, &r_ref, &rd, AS_ERR_PARAMETER);
return TRANS_DONE_ERROR;
}
bool respond_all_ops = (m->info2 & AS_MSG_INFO2_RESPOND_ALL_OPS) != 0;
as_msg_op* op = 0;
int n = 0;
while ((op = as_msg_op_iterate(m, op, &n)) != NULL) {
if (op->op == AS_MSG_OP_READ) {
as_bin* b = as_bin_get_from_buf(&rd, op->name, op->name_sz);
if (b || respond_all_ops) {
ops[n_bins] = op;
response_bins[n_bins++] = b;
}
}
else if (op->op == AS_MSG_OP_CDT_READ) {
as_bin* b = as_bin_get_from_buf(&rd, op->name, op->name_sz);
if (b) {
as_bin* rb = &result_bins[n_result_bins];
as_bin_set_empty(rb);
if ((result = as_bin_cdt_read_from_client(b, op, rb)) < 0) {
cf_warning_digest(AS_RW, &tr->keyd, "{%s} read_local: failed as_bin_cdt_read_from_client() ", ns->name);
destroy_stack_bins(result_bins, n_result_bins);
read_local_done(tr, &r_ref, &rd, -result);
return TRANS_DONE_ERROR;
}
if (as_bin_inuse(rb)) {
n_result_bins++;
ops[n_bins] = op;
response_bins[n_bins++] = rb;
}
else if (respond_all_ops) {
ops[n_bins] = op;
response_bins[n_bins++] = NULL;
}
}
else if (respond_all_ops) {
ops[n_bins] = op;
response_bins[n_bins++] = NULL;
}
}
else {
cf_warning_digest(AS_RW, &tr->keyd, "{%s} read_local: unexpected bin op %u ", ns->name, op->op);
destroy_stack_bins(result_bins, n_result_bins);
read_local_done(tr, &r_ref, &rd, AS_ERR_PARAMETER);
return TRANS_DONE_ERROR;
}
}
}
cf_dyn_buf_define_size(db, 16 * 1024);
if (tr->origin != FROM_BATCH) {
db.used_sz = db.alloc_sz;
db.buf = (uint8_t*)as_msg_make_response_msg(tr->result_code,
r->generation, r->void_time, p_ops, response_bins, n_bins, ns,
(cl_msg*)dyn_bufdb, &db.used_sz, as_transaction_trid(tr));
db.is_stack = db.buf == dyn_bufdb;
// Note - not bothering to correct alloc_sz if buf was allocated.
}
else {
tr->generation = r->generation;
tr->void_time = r->void_time;
tr->last_update_time = r->last_update_time;
// Since as_batch_add_result() constructs response directly in shared
// buffer to avoid extra copies, can't use db.
send_read_response(tr, p_ops, response_bins, n_bins, NULL);
}
destroy_stack_bins(result_bins, n_result_bins);
as_storage_record_close(&rd);
as_record_done(&r_ref, ns);
// Now that we're not under the record lock, send the message we just built.
if (db.used_sz != 0) {
send_read_response(tr, NULL, NULL, 0, &db);
cf_dyn_buf_free(&db);
tr->from.proto_fd_h = NULL;
}
return TRANS_DONE_SUCCESS;
}
