static void
worker_pool_connect(struct worker *w) {
int i;
/* create connections */
for(i = 0; i < w->pool->count; ++i) {
pool_connect(w->pool, w->s->cfg->database, 1);
}
}
static int
ws_execute(struct http_client *c, const char *frame, size_t frame_len) {
struct cmd*(*fun_extract)(struct http_client *, const char *, size_t) = NULL;
formatting_fun fun_reply = NULL;
if((c->path_sz == 1 && strncmp(c->path, "/", 1) == 0) ||
strncmp(c->path, "/.json", 6) == 0) {
fun_extract = json_ws_extract;
fun_reply = json_reply;
} else if(strncmp(c->path, "/.raw", 5) == 0) {
fun_extract = raw_ws_extract;
fun_reply = raw_reply;
}
if(fun_extract) {
/* Parse websocket frame into a cmd object. */
struct cmd *cmd = fun_extract(c, frame, frame_len);
if(cmd) {
/* copy client info into cmd. */
cmd_setup(cmd, c);
cmd->is_websocket = 1;
if (c->pub_sub != NULL) {
/* This client already has its own connection
* to Redis due to a subscription; use it from
* now on. */
cmd->ac = c->pub_sub->ac;
} else if (cmd_is_subscribe(cmd)) {
/* New subscribe command; make new Redis context
* for this client */
cmd->ac = pool_connect(c->w->pool, cmd->database, 0);
c->pub_sub = cmd;
cmd->pub_sub_client = c;
} else {
/* get Redis connection from pool */
cmd->ac = (redisAsyncContext*)pool_get_context(c->w->pool);
}
/* send it off */
cmd_send(cmd, fun_reply);
return 0;
}
}
return -1;
}
cmd_response_t
cmd_run(struct worker *w, struct http_client *client,
const char *uri, size_t uri_len,
const char *body, size_t body_len) {
char *qmark = memchr(uri, '?', uri_len);
char *slash;
const char *p, *cmd_name = uri;
int cmd_len;
int param_count = 0, cur_param = 1;
struct cmd *cmd;
formatting_fun f_format;
/* count arguments */
if(qmark) {
uri_len = qmark - uri;
}
for(p = uri; p && p < uri + uri_len; param_count++) {
p = memchr(p+1, '/', uri_len - (p+1-uri));
}
if(body && body_len) { /* PUT request */
param_count++;
}
if(param_count == 0) {
return CMD_PARAM_ERROR;
}
cmd = cmd_new(param_count);
cmd->fd = client->fd;
cmd->database = w->s->cfg->database;
/* get output formatting function */
uri_len = cmd_select_format(client, cmd, uri, uri_len, &f_format);
/* add HTTP info */
cmd_setup(cmd, client);
/* check if we only have one command or more. */
slash = memchr(uri, '/', uri_len);
if(slash) {
/* detect DB number by checking if first arg is only numbers */
int has_db = 1;
int db_num = 0;
for(p = uri; p < slash; ++p) {
if(*p < '0' || *p > '9') {
has_db = 0;
break;
}
db_num = db_num * 10 + (*p - '0');
}
/* shift to next arg if a db was set up */
if(has_db) {
char *next;
cmd->database = db_num;
cmd->count--; /* overcounted earlier */
cmd_name = slash + 1;
if((next = memchr(cmd_name, '/', uri_len - (slash - uri)))) {
cmd_len = next - cmd_name;
} else {
cmd_len = uri_len - (slash - uri + 1);
}
} else {
cmd_len = slash - uri;
}
} else {
cmd_len = uri_len;
}
/* there is always a first parameter, it's the command name */
cmd->argv[0] = malloc(cmd_len);
memcpy(cmd->argv[0], cmd_name, cmd_len);
cmd->argv_len[0] = cmd_len;
/* check that the client is able to run this command */
if(!acl_allow_command(cmd, w->s->cfg, client)) {
cmd_free(cmd);
return CMD_ACL_FAIL;
}
if(cmd_is_subscribe(cmd)) {
/* create a new connection to Redis */
cmd->ac = (redisAsyncContext*)pool_connect(w->pool, cmd->database, 0);
/* register with the client, used upon disconnection */
client->pub_sub = cmd;
cmd->pub_sub_client = client;
} else if(cmd->database != w->s->cfg->database) {
/* create a new connection to Redis for custom DBs */
cmd->ac = (redisAsyncContext*)pool_connect(w->pool, cmd->database, 0);
} else {
/* get a connection from the pool */
cmd->ac = (redisAsyncContext*)pool_get_context(w->pool);
}
/* no args (e.g. INFO command) */
if(!slash) {
if(!cmd->ac) {
cmd_free(cmd);
return CMD_REDIS_UNAVAIL;
}
redisAsyncCommandArgv(cmd->ac, f_format, cmd, 1,
(const char **)cmd->argv, cmd->argv_len);
return CMD_SENT;
}
p = cmd_name + cmd_len + 1;
while(p < uri + uri_len) {
const char *arg = p;
int arg_len;
char *next = memchr(arg, '/', uri_len - (arg-uri));
if(!next || next > uri + uri_len) { /* last argument */
p = uri + uri_len;
arg_len = p - arg;
} else { /* found a slash */
arg_len = next - arg;
p = next + 1;
}
/* record argument */
cmd->argv[cur_param] = decode_uri(arg, arg_len, &cmd->argv_len[cur_param], 1);
cur_param++;
}
if(body && body_len) { /* PUT request */
cmd->argv[cur_param] = malloc(body_len);
memcpy(cmd->argv[cur_param], body, body_len);
cmd->argv_len[cur_param] = body_len;
}
/* send it off! */
if(cmd->ac) {
cmd_send(cmd, f_format);
return CMD_SENT;
}
/* failed to find a suitable connection to Redis. */
cmd_free(cmd);
client->pub_sub = NULL;
return CMD_REDIS_UNAVAIL;
}
boost::system::error_code Connector::connect(
SocketType & peer1,
NetName const & netname,
boost::system::error_code & ec)
{
typedef typename SocketType::protocol_type::socket socket;
typedef typename socket::endpoint_type endpoint_type;
socket & peer(peer1); // we should use the real socket type, not the child type
if (netname.is_digit()) {
return connect(peer, netname.endpoint(), ec);
}
if (!started_) {
canceled_ = canceled_forever_;
stat_.reset();
connect_started_ = false;
boost::asio::detail::mutex::scoped_lock lock(mutex_);
if (canceled_) {
ec = boost::asio::error::operation_aborted;
canceled_ = false;
} else {
lock.unlock();
resolver_iterator_ = resolver_.resolve(netname, ec);
lock.lock();
}
stat_.resolve_time = stat_.elapse();
if (ec) {
return ec;
} else if (canceled_) {
canceled_ = false;
return ec = boost::asio::error::operation_aborted;
}
started_ = true;
}
ResolverIterator end;
for (; resolver_iterator_ != end; ++resolver_iterator_) {
if (!connect_started_) {
Endpoint const & e = *resolver_iterator_;
{
boost::asio::detail::mutex::scoped_lock lock(mutex_);
if (canceled_) {
ec = boost::asio::error::operation_aborted;
canceled_ = false;
} else {
if (peer.is_open()) {
peer.close(ec);
}
boost::asio::socket_base::non_blocking_io cmd1(non_block_);
#ifndef UNDER_CE
boost::asio::socket_base::receive_time_out cmd2(time_out_);
#endif
ec || peer.open(endpoint_type(e).protocol(), ec)
|| peer.io_control(cmd1, ec)
#ifndef UNDER_CE
|| peer.set_option(cmd2, ec)
#endif
;
}
}
if (ec) {
break;
}
LOG_TRACE("[connect] try server, ep: " << e.to_string());
start_connect(peer, e, ec);
} else {
ec = boost::asio::error::would_block;
}
if (ec == boost::asio::error::would_block) {
pool_connect(peer, ec);
}
if (ec != boost::asio::error::would_block) {
if (!ec) {
post_connect(peer, ec);
} else {
boost::system::error_code ec1;
post_connect(peer, ec1);
}
}
if (!ec || ec == boost::asio::error::would_block || canceled_) {
break;
}
LOG_DEBUG("[connect] failed, ep: " <<
resolver_iterator_->to_string() << ",ec: " << ec.message());
} // for
if ((!ec || ec == boost::asio::error::would_block) && canceled_) {
ec = boost::asio::error::operation_aborted;
}
if (ec != boost::asio::error::would_block) {
stat_.connect_time = stat_.elapse();
started_ = false;
canceled_ = false;
}
return ec;
}
boost::system::error_code Connector::connect(
SocketType & peer1,
Endpoint const & endpoint,
boost::system::error_code & ec)
{
typedef typename SocketType::protocol_type::socket socket;
typedef typename socket::endpoint_type endpoint_type;
socket & peer(peer1); // we should use the real socket type, not the child type
if (!started_) {
canceled_ = canceled_forever_;
stat_.reset();
stat_.resolve_time = 0;
if (ec) {
return ec;
}
{
boost::asio::detail::mutex::scoped_lock lock(mutex_);
if (canceled_) {
ec = boost::asio::error::operation_aborted;
canceled_ = false;
} else if (peer.is_open()) {
peer.close(ec);
}
boost::asio::socket_base::non_blocking_io cmd1(non_block_);
#ifndef UNDER_CE
boost::asio::socket_base::receive_time_out cmd2(time_out_);
#endif
ec || peer.open(endpoint_type(endpoint).protocol(), ec)
|| peer.io_control(cmd1, ec)
#ifndef UNDER_CE
|| peer.set_option(cmd2, ec)
#endif
;
started_ = true;
}
connect_started_ = false;
if (ec)
return ec;
start_connect(peer, endpoint, ec);
} else {
ec = boost::asio::error::would_block;
}
if (ec == boost::asio::error::would_block) {
pool_connect(peer, ec);
}
if (ec == boost::asio::error::would_block) {
if (time_out_ && stat_.elapse() > time_out_) {
ec = boost::asio::error::timed_out;
}
}
if (ec != boost::asio::error::would_block) {
if (!ec) {
post_connect(peer, ec);
} else {
boost::system::error_code ec1;
post_connect(peer, ec1);
}
stat_.connect_time = stat_.elapse();
started_ = false;
canceled_ = false;
}
return ec;
}
