static void
chunk_callback(lcb_t instance, int ign, const lcb_RESPBASE *rb)
{
const lcb_RESPHTTP *rh = (const lcb_RESPHTTP *)rb;
N1QLREQ *req = rh->cookie;
(void)ign; (void)instance;
req->cur_htresp = rh;
if (rh->rc != LCB_SUCCESS || rh->htstatus != 200) {
if (req->lasterr == LCB_SUCCESS || rh->htstatus != 200) {
req->lasterr = rh->rc ? rh->rc : LCB_HTTP_ERROR;
}
}
if (rh->rflags & LCB_RESP_F_FINAL) {
req->htreq = NULL;
destroy_req(req);
return;
} else if (req->callback == NULL) {
/* Cancelled. Similar to the block above, except the http request
* should remain alive (so we can cancel it later on) */
destroy_req(req);
return;
}
lcbjsp_feed(req->parser, rh->body, rh->nbody);
}
static int find_interrupted(struct fuse_ll *f, struct fuse_req *req)
{
struct fuse_req *curr;
for (curr = f->list.next; curr != &f->list; curr = curr->next) {
if (curr->unique == req->u.i.unique) {
curr->ctr++;
pthread_mutex_unlock(&f->lock);
/* Ugh, ugly locking */
pthread_mutex_lock(&curr->lock);
pthread_mutex_lock(&f->lock);
curr->interrupted = 1;
pthread_mutex_unlock(&f->lock);
if (curr->u.ni.func)
curr->u.ni.func(curr, curr->u.ni.data);
pthread_mutex_unlock(&curr->lock);
pthread_mutex_lock(&f->lock);
curr->ctr--;
if (!curr->ctr)
destroy_req(curr);
return 1;
}
}
for (curr = f->interrupts.next; curr != &f->interrupts;
curr = curr->next) {
if (curr->u.i.unique == req->u.i.unique)
return 1;
}
return 0;
}
void fuse_free_req(fuse_req_t req)
{
int ctr;
struct fuse_ll *f = req->f;
pthread_mutex_lock(&f->lock);
req->u.ni.func = NULL;
req->u.ni.data = NULL;
list_del_req(req);
ctr = --req->ctr;
pthread_mutex_unlock(&f->lock);
if (!ctr)
destroy_req(req);
}
static void do_interrupt(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
{
struct fuse_interrupt_in *arg = (struct fuse_interrupt_in *) inarg;
struct fuse_ll *f = req->f;
(void) nodeid;
if (f->debug)
fprintf(stderr, "INTERRUPT: %llu\n", (unsigned long long) arg->unique);
req->u.i.unique = arg->unique;
pthread_mutex_lock(&f->lock);
if (find_interrupted(f, req))
destroy_req(req);
else
list_add_req(req, &f->interrupts);
pthread_mutex_unlock(&f->lock);
}
static int perform_query_cmd(req_t *req)
{
/* Performs the QUERY command, returning a list of consoles that
* matches the console patterns given in the client's request.
* Returns 0 if the command succeeds, or -1 on error.
* Since this cmd is processed entirely by this thread,
* the client socket connection is closed once it is finished.
*/
assert(req->sd >= 0);
assert(req->command == CONMAN_CMD_QUERY);
assert(!list_is_empty(req->consoles));
log_msg(LOG_INFO, "Client <%s@%s:%d> issued query command",
req->user, req->fqdn, req->port);
if (send_rsp(req, CONMAN_ERR_NONE, NULL) < 0)
return(-1);
destroy_req(req);
return(0);
}
LIBCOUCHBASE_API
lcb_error_t
lcb_n1ql_query(lcb_t instance, const void *cookie, const lcb_CMDN1QL *cmd)
{
lcb_CMDHTTP htcmd = { 0 };
lcb_error_t err;
N1QLREQ *req = NULL;
if (cmd->query == NULL || cmd->nquery == 0 ||
cmd->callback == NULL || cmd->content_type == NULL) {
return LCB_EINVAL;
}
htcmd.body = cmd->query;
htcmd.nbody = cmd->nquery;
htcmd.content_type = cmd->content_type;
htcmd.method = LCB_HTTP_METHOD_POST;
if (cmd->host) {
htcmd.type = LCB_HTTP_TYPE_RAW;
LCB_CMD_SET_KEY(&htcmd, QUERY_PATH, strlen(QUERY_PATH));
htcmd.host = cmd->host;
htcmd.username = LCBT_SETTING(instance, bucket);
htcmd.password = LCBT_SETTING(instance, password);
} else {
htcmd.type = LCB_HTTP_TYPE_N1QL;
}
htcmd.cmdflags = LCB_CMDHTTP_F_STREAM;
req = calloc(1, sizeof(*req));
if (!req) {
err = LCB_CLIENT_ENOMEM; goto GT_DESTROY;
}
req->callback = cmd->callback;
req->cookie = cookie;
req->instance = instance;
req->parser = lcbjsp_create(LCBJSP_MODE_N1QL);
if (!req->parser) {
err = LCB_CLIENT_ENOMEM; goto GT_DESTROY;
}
req->parser->data = req;
req->parser->callback = row_callback;
htcmd.reqhandle = &req->htreq;
err = lcb_http3(instance, req, &htcmd);
if (err != LCB_SUCCESS) {
goto GT_DESTROY;
}
lcb_htreq_setcb(req->htreq, chunk_callback);
if (cmd->handle) {
*cmd->handle = req;
}
return LCB_SUCCESS;
GT_DESTROY:
if (req) {
req->callback = NULL;
destroy_req(req);
}
return err;
}
void process_client(client_arg_t *args)
{
/* The thread responsible for accepting a client connection
* and processing the request.
* The QUERY cmd is processed entirely by this thread.
* The MONITOR and CONNECT cmds are setup and then placed
* in the conf->objs list to be handled by mux_io().
*/
int sd;
server_conf_t *conf;
req_t *req;
/* Free the tmp struct that was created by accept_client()
* in order to pass multiple args to this thread.
*/
assert(args != NULL);
sd = args->sd;
conf = args->conf;
free(args);
DPRINTF((5, "Processing new client.\n"));
x_pthread_detach(pthread_self());
req = create_req();
if (resolve_addr(conf, req, sd) < 0)
goto err;
if (recv_greeting(req) < 0)
goto err;
if (recv_req(req) < 0)
goto err;
if (query_consoles(conf, req) < 0)
goto err;
if (validate_req(req) < 0)
goto err;
/* send_rsp() needs to know if the reset command is supported.
* Since it cannot check resetCmd in the server_conf struct,
* we set a flag in the request struct instead.
*/
if (conf->resetCmd)
req->enableReset = 1;
switch(req->command) {
case CONMAN_CMD_CONNECT:
if (perform_connect_cmd(req, conf) < 0)
goto err;
break;
case CONMAN_CMD_MONITOR:
if (perform_monitor_cmd(req, conf) < 0)
goto err;
break;
case CONMAN_CMD_QUERY:
if (perform_query_cmd(req) < 0)
goto err;
break;
default:
log_msg(LOG_WARNING, "Received invalid command=%d from <%s@%s:%d>",
req->command, req->user, req->fqdn, req->port);
goto err;
}
return;
err:
destroy_req(req);
return;
}