static void
H_stats(mc_PIPELINE *pipeline, mc_PACKET *request, packet_info *response,
lcb_error_t immerr)
{
lcb_t root = pipeline->parent->cqdata;
lcb_RESPSTATS resp = { 0 };
mc_REQDATAEX *exdata;
MK_ERROR(root, &resp, response, immerr);
resp.version = 0;
exdata = request->u_rdata.exdata;
if (resp.rc != LCB_SUCCESS || PACKET_NKEY(response) == 0) {
/* Call the handler without a response, this indicates that this server
* has finished responding */
exdata->procs->handler(pipeline, request, resp.rc, NULL);
return;
}
if ((resp.nkey = PACKET_NKEY(response))) {
resp.key = PACKET_KEY(response);
if ((resp.value = PACKET_VALUE(response))) {
resp.nvalue = PACKET_NVALUE(response);
}
}
exdata->procs->handler(pipeline, request, resp.rc, &resp);
}
static void
H_stats(mc_PIPELINE *pipeline, mc_PACKET *request, packet_info *response,
lcb_error_t immerr)
{
lcb_t root = pipeline->parent->instance;
lcb_error_t rc;
lcb_server_stat_resp_t resp;
mc_REQDATAEX *exdata;
MK_ERROR(root, rc, response, immerr);
resp.version = 0;
exdata = request->u_rdata.exdata;
if (rc != LCB_SUCCESS || PACKET_NKEY(response) == 0) {
/* Call the handler without a response, this indicates that this server
* has finished responding */
exdata->callback(pipeline, request, rc, NULL);
return;
}
if ((resp.v.v0.nkey = PACKET_NKEY(response))) {
resp.v.v0.key = PACKET_KEY(response);
if ((resp.v.v0.nbytes = PACKET_NVALUE(response))) {
resp.v.v0.bytes = PACKET_VALUE(response);
}
}
exdata->callback(pipeline, request, rc, &resp);
}
static void stat_response_handler(lcb_server_t *server, packet_info *info)
{
lcb_t root = server->instance;
lcb_uint16_t status = PACKET_STATUS(info);
lcb_error_t rc = map_error(root, status);
lcb_server_stat_resp_t resp;
struct lcb_command_data_st *command_data = &info->ct;
if (status == PROTOCOL_BINARY_RESPONSE_SUCCESS) {
if (!PACKET_NKEY(info)) {
if (lcb_lookup_server_with_command(root, PROTOCOL_BINARY_CMD_STAT,
PACKET_OPAQUE(info), server) < 0) {
/* notify client that data is ready */
setup_lcb_server_stat_resp_t(&resp, NULL, NULL, 0, NULL, 0);
root->callbacks.stat(root, command_data->cookie, rc, &resp);
}
return;
}
setup_lcb_server_stat_resp_t(&resp, server->authority,
PACKET_KEY(info), PACKET_NKEY(info),
PACKET_VALUE(info), PACKET_NVALUE(info));
root->callbacks.stat(root, command_data->cookie, rc, &resp);
} else {
setup_lcb_server_stat_resp_t(&resp, server->authority,
NULL, 0, NULL, 0);
root->callbacks.stat(root, command_data->cookie, rc, &resp);
/* run callback with null-null-null to signal the end of transfer */
if (lcb_lookup_server_with_command(root, PROTOCOL_BINARY_CMD_STAT,
PACKET_OPAQUE(info), server) < 0) {
setup_lcb_server_stat_resp_t(&resp, NULL, NULL, 0, NULL, 0);
root->callbacks.stat(root, command_data->cookie, LCB_SUCCESS, &resp);
}
}
}
static void get_replica_response_handler(lcb_server_t *server,
packet_info *info)
{
lcb_t root = server->instance;
lcb_uint16_t nkey;
const char *key;
char *packet;
lcb_uint16_t status = PACKET_STATUS(info);
lcb_error_t rc = map_error(root, status);
/**
* Success? always perform the callback
*/
if (status == PROTOCOL_BINARY_RESPONSE_SUCCESS) {
const protocol_binary_response_get *get = PACKET_EPHEMERAL_START(info);
lcb_get_resp_t resp;
setup_lcb_get_resp_t(&resp,
PACKET_KEY(info), PACKET_NKEY(info),
PACKET_VALUE(info), PACKET_NVALUE(info),
ntohl(get->message.body.flags),
PACKET_CAS(info),
PACKET_DATATYPE(info));
root->callbacks.get(root, info->ct.cookie, rc, &resp);
return;
}
key = get_key(server, &nkey, &packet);
/**
* Following code handles errors.
*/
if (info->ct.replica == -1) {
/* Perform the callback. Either SELECT or ALL */
lcb_get_resp_t resp;
setup_lcb_get_resp_t(&resp, key, nkey, NULL, 0, 0, 0, 0);
PACKET_TRACE(TRACE_GET_END, info, rc, &resp);
root->callbacks.get(root, info->ct.cookie, rc, &resp);
release_key(server, packet);
return;
}
/** LCB_REPLICA_FIRST */
if (status == PROTOCOL_BINARY_RESPONSE_NOT_MY_VBUCKET) {
/**
* the config was updated, start from first replica.
* Reset the iteration count
*/
info->ct.replica = 0;
} else {
info->ct.replica++;
}
if (info->ct.replica < root->nreplicas) {
/* try next replica */
protocol_binary_request_get req;
lcb_server_t *new_server;
int idx = vbucket_get_replica(root->vbucket_config,
info->ct.vbucket,
info->ct.replica);
if (idx < 0 || idx > (int)root->nservers) {
lcb_error_handler(root, LCB_NETWORK_ERROR,
"GET_REPLICA: missing server");
release_key(server, packet);
return;
}
new_server = root->servers + idx;
memset(&req, 0, sizeof(req));
req.message.header.request.magic = PROTOCOL_BINARY_REQ;
req.message.header.request.datatype = PROTOCOL_BINARY_RAW_BYTES;
req.message.header.request.opcode = CMD_GET_REPLICA;
req.message.header.request.keylen = ntohs((lcb_uint16_t)nkey);
req.message.header.request.vbucket = ntohs(info->ct.vbucket);
req.message.header.request.bodylen = ntohl((lcb_uint32_t)nkey);
req.message.header.request.opaque = ++root->seqno;
TRACE_GET_BEGIN(&req, key, nkey, 0);
lcb_server_retry_packet(new_server, &info->ct,
req.bytes, sizeof(req.bytes));
lcb_server_write_packet(new_server, key, nkey);
lcb_server_end_packet(new_server);
lcb_server_send_packets(new_server);
} else {
/* give up and report the error */
lcb_get_resp_t resp;
setup_lcb_get_resp_t(&resp, key, nkey, NULL, 0, 0, 0, 0);
PACKET_TRACE(TRACE_GET_END, info, rc, &resp)
root->callbacks.get(root, info->ct.cookie, rc, &resp);
}
release_key(server, packet);
}