int lcb_proto_parse_single(lcb_server_t *c, hrtime_t stop)
{
int rv;
packet_info info;
protocol_binary_request_header req;
lcb_size_t nr;
lcb_connection_t conn = &c->connection;
rv = lcb_packet_read_ringbuffer(&info, conn->input);
if (rv == -1) {
return -1;
} else if (rv == 0) {
return 0;
}
/* Is it already timed out? */
nr = ringbuffer_peek(&c->cmd_log, req.bytes, sizeof(req));
if (nr < sizeof(req) || /* the command log doesn't know about it */
(PACKET_OPAQUE(&info) < req.request.opaque &&
PACKET_OPAQUE(&info) > 0)) { /* sasl comes with zero opaque */
/* already processed. */
lcb_packet_release_ringbuffer(&info, conn->input);
return 1;
}
nr = ringbuffer_peek(&c->output_cookies, &info.ct, sizeof(info.ct));
if (nr != sizeof(info.ct)) {
lcb_error_handler(c->instance, LCB_EINTERNAL, NULL);
lcb_packet_release_ringbuffer(&info, conn->input);
return -1;
}
info.ct.vbucket = ntohs(req.request.vbucket);
switch (info.res.response.magic) {
case PROTOCOL_BINARY_REQ:
/*
* The only way to get request packets is if someone started
* to send us TAP requests, and we don't support that anymore
*/
lcb_error_handler(c->instance, LCB_EINTERNAL,
"Protocol error. someone sent us a command!");
return -1;
case PROTOCOL_BINARY_RES: {
int was_connected = c->connection_ready;
rv = lcb_server_purge_implicit_responses(c,
PACKET_OPAQUE(&info),
stop, 0);
if (rv != 0) {
lcb_packet_release_ringbuffer(&info, conn->input);
return -1;
}
if (c->instance->histogram) {
lcb_record_metrics(c->instance, stop - info.ct.start,
PACKET_OPCODE(&info));
}
if (PACKET_STATUS(&info) != PROTOCOL_BINARY_RESPONSE_NOT_MY_VBUCKET
|| PACKET_OPCODE(&info) == CMD_GET_REPLICA
|| PACKET_OPCODE(&info) == CMD_OBSERVE) {
rv = lcb_dispatch_response(c, &info);
if (rv == -1) {
lcb_error_handler(c->instance, LCB_EINTERNAL,
"Received unknown command response");
abort();
return -1;
}
/* keep command and cookie until we get complete STAT response */
swallow_command(c, &info.res, was_connected);
} else {
rv = handle_not_my_vbucket(c, &info, &req, &info.ct);
if (rv == -1) {
return -1;
} else if (rv == 0) {
lcb_dispatch_response(c, &info);
swallow_command(c, &info.res, was_connected);
}
}
break;
}
default:
lcb_error_handler(c->instance, LCB_PROTOCOL_ERROR, NULL);
lcb_packet_release_ringbuffer(&info, conn->input);
return -1;
}
lcb_packet_release_ringbuffer(&info, conn->input);
return 1;
}
static int lcb_parse_single_with_specialized_callbacks(lcb_server_t *c,
hrtime_t stop)
{
protocol_binary_request_header req;
protocol_binary_response_header header;
lcb_size_t nr;
char *packet;
lcb_size_t packetsize;
struct lcb_command_data_st ct;
lcb_connection_t conn = &c->connection;
if (lcb_ringbuffer_ensure_alignment(&conn->input.buffer->ringbuffer) != 0) {
lcb_error_handler(c->instance, LCB_EINTERNAL,
NULL);
return -1;
}
nr = lcb_ringbuffer_peek(&conn->input.buffer->ringbuffer,
header.bytes, sizeof(header));
if (nr < sizeof(header)) {
return 0;
}
packetsize = ntohl(header.response.bodylen) + (lcb_uint32_t)sizeof(header);
if (conn->input.buffer->ringbuffer.nbytes < packetsize) {
return 0;
}
/* Is it already timed out? */
nr = lcb_ringbuffer_peek(&c->cmd_log, req.bytes, sizeof(req));
if (nr < sizeof(req) || /* the command log doesn't know about it */
(header.response.opaque < req.request.opaque &&
header.response.opaque > 0)) { /* sasl comes with zero opaque */
/* already processed. */
lcb_ringbuffer_consumed(&conn->input.buffer->ringbuffer, packetsize);
return 1;
}
packet = conn->input.buffer->ringbuffer.read_head;
/* we have everything! */
if (!lcb_ringbuffer_is_continous(&conn->input.buffer->ringbuffer,
LCB_RINGBUFFER_READ, packetsize)) {
/* The buffer isn't continous.. for now just copy it out and
** operate on the copy ;)
*/
if ((packet = malloc(packetsize)) == NULL) {
lcb_error_handler(c->instance, LCB_CLIENT_ENOMEM, NULL);
return -1;
}
nr = lcb_ringbuffer_read(&conn->input.buffer->ringbuffer, packet, packetsize);
if (nr != packetsize) {
lcb_error_handler(c->instance, LCB_EINTERNAL,
NULL);
free(packet);
return -1;
}
}
nr = lcb_ringbuffer_peek(&c->output_cookies, &ct, sizeof(ct));
if (nr != sizeof(ct)) {
lcb_error_handler(c->instance, LCB_EINTERNAL,
NULL);
if (packet != conn->input.buffer->ringbuffer.read_head) {
free(packet);
}
return -1;
}
ct.vbucket = ntohs(req.request.vbucket);
switch (header.response.magic) {
case PROTOCOL_BINARY_REQ:
/*
* The only way to get request packets is if someone started
* to send us TAP requests, and we don't support that anymore
*/
lcb_error_handler(c->instance, LCB_EINTERNAL,
"Protocol error. someone sent us a command!");
return -1;
case PROTOCOL_BINARY_RES: {
int was_connected = c->connection_ready;
if (lcb_server_purge_implicit_responses(c, header.response.opaque, stop, 0) != 0) {
if (packet != conn->input.buffer->ringbuffer.read_head) {
free(packet);
}
return -1;
}
if (c->instance->histogram) {
lcb_record_metrics(c->instance, stop - ct.start,
header.response.opcode);
}
if (ntohs(header.response.status) != PROTOCOL_BINARY_RESPONSE_NOT_MY_VBUCKET
|| header.response.opcode == CMD_GET_REPLICA
|| header.response.opcode == CMD_OBSERVE) {
if (lcb_dispatch_response(c, &ct, (void *)packet) == -1) {
/*
* Internal error.. we received an unsupported response
* id. This should _ONLY_ happen at development time because
* we won't receive response packets with other opcodes
* than we send. Let's abort here to make it easy for
* the developer to know what happened..
*/
lcb_error_handler(c->instance, LCB_EINTERNAL,
"Received unknown command response");
abort();
return -1;
}
/* keep command and cookie until we get complete STAT response */
swallow_command(c, &header, was_connected);
} else {
int rv = handle_not_my_vbucket(c, &req, &ct);
if (rv == -1) {
return -1;
} else if (rv == 0) {
lcb_dispatch_response(c, &ct, (void *)packet);
swallow_command(c, &header, was_connected);
}
}
break;
}
default:
lcb_error_handler(c->instance,
LCB_PROTOCOL_ERROR,
NULL);
if (packet != conn->input.buffer->ringbuffer.read_head) {
free(packet);
}
return -1;
}
if (packet != conn->input.buffer->ringbuffer.read_head) {
free(packet);
} else {
lcb_ringbuffer_consumed(&conn->input.buffer->ringbuffer, packetsize);
}
return 1;
}
