static as_status
as_admin_read_blocks(as_error* err, int fd, uint64_t deadline_ms, as_admin_parse_fn parse_fn, as_vector* list)
{
as_status status = AEROSPIKE_OK;
uint8_t* buf = 0;
size_t capacity = 0;
while (true) {
// Read header
as_proto proto;
status = as_socket_read_deadline(err, fd, (uint8_t*)&proto, sizeof(as_proto), deadline_ms);
if (status) {
break;
}
as_proto_swap_from_be(&proto);
size_t size = proto.sz;
if (size > 0) {
// Prepare buffer
if (size > capacity) {
as_command_free(buf, capacity);
capacity = size;
buf = as_command_init(capacity);
}
// Read remaining message bytes in group
status = as_socket_read_deadline(err, fd, buf, size, deadline_ms);
if (status) {
break;
}
status = parse_fn(err, buf, size, list);
if (status != AEROSPIKE_OK) {
if (status == AEROSPIKE_QUERY_END) {
status = AEROSPIKE_OK;
}
else {
as_error_set_message(err, status, as_error_string(status));
}
break;
}
}
}
as_command_free(buf, capacity);
return status;
}
static void
as_ev_command_peek_block(as_event_command* cmd)
{
// Batch, scan, query may be waiting on end block.
// Prepare for next message block.
cmd->len = sizeof(as_proto);
cmd->pos = 0;
cmd->state = AS_ASYNC_STATE_READ_HEADER;
if (! as_ev_read(cmd)) {
return;
}
as_proto* proto = (as_proto*)cmd->buf;
as_proto_swap_from_be(proto);
size_t size = proto->sz;
cmd->len = (uint32_t)size;
cmd->pos = 0;
cmd->state = AS_ASYNC_STATE_READ_BODY;
// Check for end block size.
if (cmd->len == sizeof(as_msg)) {
// Look like we received end block. Read and parse to make sure.
if (! as_ev_read(cmd)) {
return;
}
if (! cmd->parse_results(cmd)) {
// We did not finish after all. Prepare to read next header.
cmd->len = sizeof(as_proto);
cmd->pos = 0;
cmd->state = AS_ASYNC_STATE_READ_HEADER;
}
}
else {
// Received normal data block. Stop reading for fairness reasons and wait
// till next iteration.
if (cmd->len > cmd->capacity) {
if (cmd->free_buf) {
cf_free(cmd->buf);
}
cmd->buf = cf_malloc(size);
cmd->capacity = cmd->len;
cmd->free_buf = true;
}
}
}
static as_status
as_scan_parse(as_error* err, int fd, uint64_t deadline_ms, void* udata)
{
as_scan_task* task = udata;
as_status status = AEROSPIKE_OK;
uint8_t* buf = 0;
size_t capacity = 0;
while (true) {
// Read header
as_proto proto;
status = as_socket_read_deadline(err, fd, (uint8_t*)&proto, sizeof(as_proto), deadline_ms);
if (status) {
break;
}
as_proto_swap_from_be(&proto);
size_t size = proto.sz;
if (size > 0) {
// Prepare buffer
if (size > capacity) {
as_command_free(buf, capacity);
capacity = size;
buf = as_command_init(capacity);
}
// Read remaining message bytes in group
status = as_socket_read_deadline(err, fd, buf, size, deadline_ms);
if (status) {
break;
}
status = as_scan_parse_records(buf, size, task, err);
if (status != AEROSPIKE_OK) {
if (status == AEROSPIKE_NO_MORE_RECORDS) {
status = AEROSPIKE_OK;
}
break;
}
}
}
as_command_free(buf, capacity);
return status;
}
static void
as_ev_command_read(as_event_command* cmd)
{
// Check for authenticate read-header or read-body.
if (cmd->state & (AS_ASYNC_STATE_AUTH_READ_HEADER | AS_ASYNC_STATE_AUTH_READ_BODY)) {
as_ev_parse_authentication(cmd);
return;
}
if (cmd->state == AS_ASYNC_STATE_READ_HEADER) {
// Read response length
if (! as_ev_read(cmd)) {
return;
}
as_proto* proto = (as_proto*)cmd->buf;
as_proto_swap_from_be(proto);
size_t size = proto->sz;
cmd->len = (uint32_t)size;
cmd->pos = 0;
cmd->state = AS_ASYNC_STATE_READ_BODY;
if (cmd->len > cmd->capacity) {
if (cmd->free_buf) {
cf_free(cmd->buf);
}
cmd->buf = cf_malloc(size);
cmd->capacity = cmd->len;
cmd->free_buf = true;
}
}
// Read response body
if (! as_ev_read(cmd)) {
return;
}
if (! cmd->parse_results(cmd)) {
// Batch, scan, query is not finished.
as_ev_command_peek_block(cmd);
}
}
as_status
as_command_parse_header(as_error* err, int fd, uint64_t deadline_ms, void* user_data)
{
// Read header
as_proto_msg* msg = user_data;
as_status status = as_socket_read_deadline(err, fd, (uint8_t*)msg, sizeof(as_proto_msg), deadline_ms);
if (status) {
return status;
}
// Ensure that there is no data left to read.
as_proto_swap_from_be(&msg->proto);
as_msg_swap_header_from_be(&msg->m);
size_t size = msg->proto.sz - msg->m.header_sz;
if (size > 0) {
as_log_warn("Unexpected data received from socket after a write: fd=%d size=%zu", fd, size);
// Verify size is not corrupted.
if (size > 100000) {
// The socket will be closed on this error, so we don't have to worry about emptying it.
return as_error_update(err, AEROSPIKE_ERR_CLIENT,
"Unexpected data received from socket after a write: fd=%d size=%zu", fd, size);
}
// Empty socket.
uint8_t* buf = cf_malloc(size);
status = as_socket_read_deadline(err, fd, buf, size, deadline_ms);
cf_free(buf);
if (status) {
return status;
}
}
if (msg->m.result_code) {
return as_error_set_message(err, msg->m.result_code, as_error_string(msg->m.result_code));
}
return msg->m.result_code;
}
as_status
as_command_parse_success_failure(as_error* err, int fd, uint64_t deadline_ms, void* user_data)
{
// Read header
as_proto_msg msg;
as_status status = as_socket_read_deadline(err, fd, (uint8_t*)&msg, sizeof(as_proto_msg), deadline_ms);
if (status) {
return status;
}
as_proto_swap_from_be(&msg.proto);
as_msg_swap_header_from_be(&msg.m);
size_t size = msg.proto.sz - msg.m.header_sz;
uint8_t* buf = 0;
if (size > 0) {
// Read remaining message bytes.
buf = as_command_init(size);
status = as_socket_read_deadline(err, fd, buf, size, deadline_ms);
if (status) {
as_command_free(buf, size);
return status;
}
}
as_val** val = user_data;
// Parse result code and record.
status = msg.m.result_code;
switch (status) {
case AEROSPIKE_OK: {
uint8_t* p = buf;
status = as_command_parse_success_failure_bins(&p, err, &msg.m, val);
if (status != AEROSPIKE_OK) {
if (val) {
*val = 0;
}
}
break;
}
case AEROSPIKE_ERR_UDF: {
status = as_command_parse_udf_failure(buf, err, &msg.m, status);
if (val) {
*val = 0;
}
break;
}
default:
as_error_set_message(err, status, as_error_string(status));
if (val) {
*val = 0;
}
break;
}
as_command_free(buf, size);
return status;
}
as_status
as_command_parse_result(as_error* err, int fd, uint64_t deadline_ms, void* user_data)
{
// Read header
as_proto_msg msg;
as_status status = as_socket_read_deadline(err, fd, (uint8_t*)&msg, sizeof(as_proto_msg), deadline_ms);
if (status) {
return status;
}
as_proto_swap_from_be(&msg.proto);
as_msg_swap_header_from_be(&msg.m);
size_t size = msg.proto.sz - msg.m.header_sz;
uint8_t* buf = 0;
if (size > 0) {
// Read remaining message bytes.
buf = as_command_init(size);
status = as_socket_read_deadline(err, fd, buf, size, deadline_ms);
if (status) {
as_command_free(buf, size);
return status;
}
}
// Parse result code and record.
status = msg.m.result_code;
as_command_parse_result_data* data = user_data;
switch (status) {
case AEROSPIKE_OK: {
if (data->record) {
as_record* rec = *data->record;
if (rec) {
if (msg.m.n_ops > rec->bins.capacity) {
if (rec->bins._free) {
free(rec->bins.entries);
}
rec->bins.capacity = msg.m.n_ops;
rec->bins.size = 0;
rec->bins.entries = malloc(sizeof(as_bin) * msg.m.n_ops);
rec->bins._free = true;
}
}
else {
rec = as_record_new(msg.m.n_ops);
*data->record = rec;
}
rec->gen = msg.m.generation;
rec->ttl = cf_server_void_time_to_ttl(msg.m.record_ttl);
uint8_t* p = as_command_ignore_fields(buf, msg.m.n_fields);
as_command_parse_bins(rec, p, msg.m.n_ops, data->deserialize);
}
break;
}
case AEROSPIKE_ERR_UDF: {
status = as_command_parse_udf_failure(buf, err, &msg.m, status);
break;
}
default:
as_error_set_message(err, status, as_error_string(status));
break;
}
as_command_free(buf, size);
return status;
}
static void
as_uv_command_read(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf)
{
if (!as_uv_connection_alive(stream)) {
return;
}
as_event_command* cmd = as_uv_get_command(stream->data);
if (nread < 0) {
uv_read_stop(stream);
as_error err;
as_error_update(&err, AEROSPIKE_ERR_ASYNC_CONNECTION, "Socket read failed: %zd", nread);
as_event_socket_error(cmd, &err);
return;
}
cmd->pos += nread;
if (cmd->pos < cmd->len) {
// Read not finished.
return;
}
if (cmd->state == AS_ASYNC_STATE_READ_HEADER) {
as_proto* proto = (as_proto*)cmd->buf;
as_proto_swap_from_be(proto);
size_t size = proto->sz;
cmd->len = (uint32_t)size;
cmd->pos = 0;
cmd->state = AS_ASYNC_STATE_READ_BODY;
if (cmd->len < sizeof(as_msg)) {
uv_read_stop(stream);
as_error err;
as_error_update(&err, AEROSPIKE_ERR_CLIENT, "Invalid record header size: %u", cmd->len);
as_event_socket_error(cmd, &err);
return;
}
if (cmd->len > cmd->capacity) {
if (cmd->free_buf) {
cf_free(cmd->buf);
}
cmd->buf = cf_malloc(size);
cmd->capacity = cmd->len;
cmd->free_buf = true;
}
return;
}
as_pipe_connection* conn_to_read = NULL;
if (cmd->pipe_listener != NULL) {
conn_to_read = (as_pipe_connection*)cmd->conn;
if (cf_ll_size(&conn_to_read->readers) < 2) {
conn_to_read = NULL;
}
}
if (cmd->parse_results(cmd)) {
uv_read_stop(stream);
// Register the next reader, if there are readers left.
if (conn_to_read != NULL) {
stream->data = conn_to_read;
int status = uv_read_start(stream, as_uv_command_buffer, as_uv_command_read);
if (status) {
as_error err;
as_error_update(&err, AEROSPIKE_ERR_ASYNC_CONNECTION, "uv_read_start failed: %s", uv_strerror(status));
as_event_socket_error(cmd, &err);
}
}
}
else {
// Batch, scan, query is not finished.
cmd->len = sizeof(as_proto);
cmd->pos = 0;
cmd->state = AS_ASYNC_STATE_READ_HEADER;
}
}
