static void cmdOperation(master_t *master, risp_length_t length, void *data)
{
risp_length_t processed;
risp_length_t plen;
risp_data_t *pdata;
int cnt;
assert(master);
assert(length > 0);
assert(data);
// we have data, that we need to put through the risp_op parser. It will
// return some transaction details, and a payload.
assert(master->risp_op);
risp_clear_all(master->risp_op);
processed = risp_process(master->risp_op, NULL, length, data);
assert(processed == length);
// if ( risp_isset(storage->risp_op, STASH_CMD_USER_ID) != 0) {
// storage->opdata.user_id = risp_getvalue(storage->risp_op, STASH_CMD_USER_ID);
// }
// if ( risp_isset(storage->risp_op, STASH_CMD_DATE) != 0) {
// storage->opdata.date = risp_getvalue(storage->risp_op, STASH_CMD_DATE);
// }
// if ( risp_isset(storage->risp_op, STASH_CMD_TIME) != 0) {
// storage->opdata.time = risp_getvalue(storage->risp_op, STASH_CMD_TIME);
// }
assert ( risp_isset(master->risp_op, STASH_CMD_PAYLOAD) != 0);
plen = risp_getlength(master->risp_op, STASH_CMD_PAYLOAD);
pdata = risp_getdata(master->risp_op, STASH_CMD_PAYLOAD);
assert(pdata);
assert(plen > 0);
// now that we have everything setup ready to process the information, we
// need to parse the payload. THe payload RISP interface will have
// callbacks for all the operational commands, so whatever needs to be
// done will be handled internally. When the parse function has finished,
// there is nothing else for us to do.
risp_clear_all(master->risp_payload);
processed = risp_process(master->risp_payload, master, plen, pdata);
assert(processed == plen);
// need to somehow identify if the payload is something other than what we
// expect so that we can report that there is at least something there.
for (cnt=0; cnt<256; cnt++) {
if (master->risp_payload->commands[cnt].handler == NULL) {
if (master->risp_payload->commands[cnt].set) {
printf("Unexpected operation: %d\n", cnt);
}
}
}
}
static void cmdCreateNamespace(master_t *master, risp_length_t length, void *data)
{
char *newuser;
nsid_t id;
risp_length_t processed;
assert(master);
assert(length > 0);
assert(data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
assert(risp_isset(master->risp_data, STASH_CMD_NAMESPACE) != 0);
assert(risp_isset(master->risp_data, STASH_CMD_NAMESPACE_ID) != 0);
newuser = risp_getstring(master->risp_data, STASH_CMD_NAMESPACE);
id = risp_getvalue(master->risp_data, STASH_CMD_NAMESPACE_ID);
assert(newuser);
assert(id > 0);
printf("New Namespace: [nsid:%d]='%s'\n", id, newuser);
}
static void cmdDelete(master_t *master, risp_length_t length, void *data)
{
nsid_t nsid = 0;
tableid_t tid = 0;
rowid_t rid = 0;
keyid_t kid = 0;
risp_length_t processed;
assert(master && length > 0 && data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
assert(risp_isset(master->risp_data, STASH_CMD_ROW_ID));
rid = risp_getvalue(master->risp_data, STASH_CMD_ROW_ID);
assert(rid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_NAMESPACE_ID));
nsid = risp_getvalue(master->risp_data, STASH_CMD_NAMESPACE_ID);
assert(nsid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_TABLE_ID));
tid = risp_getvalue(master->risp_data, STASH_CMD_TABLE_ID);
assert(tid > 0);
if(risp_isset(master->risp_data, STASH_CMD_KEY_ID)) {
kid = risp_getvalue(master->risp_data, STASH_CMD_KEY_ID);
assert(kid > 0);
}
printf("Delete: [nsid:%d, tid:%d, rid:%d, kid:%d]\n", nsid, tid, rid, kid);
}
static void cmdCreateRow(master_t *master, risp_length_t length, void *data)
{
nsid_t nsid = 0;
tableid_t tid = 0;
nameid_t nid = 0;
rowid_t rid = 0;
risp_length_t processed;
assert(master && length > 0 && data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
assert(risp_isset(master->risp_data, STASH_CMD_ROW_ID));
rid = risp_getvalue(master->risp_data, STASH_CMD_ROW_ID);
assert(rid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_NAMESPACE_ID));
nsid = risp_getvalue(master->risp_data, STASH_CMD_NAMESPACE_ID);
assert(nsid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_TABLE_ID));
tid = risp_getvalue(master->risp_data, STASH_CMD_TABLE_ID);
assert(tid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_NAME_ID));
nid = risp_getvalue(master->risp_data, STASH_CMD_NAME_ID);
assert(nid > 0);
printf("Create Row: [nsid:%d, tid:%d, nid:%d, rid:%d]\n", nsid, tid, nid, rid);
}
static void cmdCreateUser(master_t *master, risp_length_t length, void *data)
{
char *newuser;
userid_t uid;
risp_length_t processed;
assert(master);
assert(length > 0);
assert(data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
assert(risp_isset(master->risp_data, STASH_CMD_USERNAME) != 0);
assert(risp_isset(master->risp_data, STASH_CMD_USER_ID) != 0);
newuser = risp_getstring(master->risp_data, STASH_CMD_USERNAME);
uid = risp_getvalue(master->risp_data, STASH_CMD_USER_ID);
assert(newuser);
assert(uid > 0);
printf("New User: [uid:%d]='%s'\n", uid, newuser);
}
//-----------------------------------------------------------------------------
// This callback function is used when a complete message is received to
// consume. We basically need to create a request to handle it, add it to the
// list. If a reply is sent during the processing, then it will close out the
// request automatically, otherwise it will be up to something else to close it
// out.
static void message_handler(rq_message_t *msg, void *arg)
{
int processed;
rq_http_t *http;
rq_http_req_t *req;
assert(msg);
assert(arg);
http = (rq_http_t *) arg;
assert(http);
// We dont know what the use of this object will be, so we need to create it
// and put it in a list (to keep track of it) until something gets rid of it.
req = req_new(http, http->arg);
req->msg = msg;
assert(req->reply);
assert(BUF_LENGTH(req->reply) == 0);
assert(msg->data);
assert(http->risp);
processed = risp_process(http->risp, req, BUF_LENGTH(msg->data), BUF_DATA(msg->data));
assert(processed == BUF_LENGTH(msg->data));
// if we still have the msg pointer as part of the request, then the message
// hasn't been replied yet, so we need to add the request to the list and
// let it finish elsewhere.
if (req->msg) {
assert(req->inprocess == 0);
req->inprocess++;
// then we need to add this request to the list.
assert(http->req_list);
ll_push_head(http->req_list, req);
req = NULL;
}
else {
// We have already replied to the request, so we dont need it anymore.
req_free(req);
req = NULL;
}
}
//-----------------------------------------------------------------------------
// Handle the response from the blacklist service.
static void blacklist_handler(rq_message_t *reply)
{
cache_waiting_t *waiting;
int processed;
assert(reply);
waiting = reply->arg;
assert(waiting);
assert(waiting->msg == NULL);
waiting->msg = reply;
assert(reply->data);
assert(waiting->blacklist);
assert(waiting->blacklist->risp);
processed = risp_process(waiting->blacklist->risp, waiting, BUF_LENGTH(reply->data), (risp_char_t *) BUF_DATA(reply->data));
assert(processed == BUF_LENGTH(reply->data));
waiting->msg = NULL;
}
//-----------------------------------------------------------------------------
// Handle the message that was sent over the queue. the message itself uses
// the RISP method, so we pass the data on to the risp processor.
static void message_handler(rq_message_t *msg, void *arg)
{
int processed;
control_t *control;
assert(msg);
control = (control_t *) arg;
assert(control);
assert(control->rqsvc);
assert(control->rqsvc->rq);
assert(msg->conn);
assert(msg->conn->rq);
assert(control->rqsvc->rq == msg->conn->rq);
assert(control->reply);
assert(BUF_LENGTH(control->reply) == 0);
// since we will only be processing one request at a time, and there are no
// paths for blocking when processing the request, we will put the request
// in the control structure. If we were processing more than one, we would
// create a list of pending requests which contain the control structure in
// it.
assert(control->req == NULL);
control->req = msg;
assert(control->risp);
assert(msg->data);
processed = risp_process(control->risp, control, BUF_LENGTH(msg->data), BUF_DATA(msg->data));
assert(processed == BUF_LENGTH(msg->data));
// we need to get the reply and return it. Has that been done?
assert(control->reply);
assert(BUF_LENGTH(control->reply) > 0);
rq_reply(msg, BUF_LENGTH(control->reply), BUF_DATA(control->reply));
expbuf_clear(control->reply);
msg = NULL;
control->req = NULL;
}
static void cmdSet(master_t *master, risp_length_t length, void *data)
{
nsid_t nsid = 0;
tableid_t tid = 0;
rowid_t rid = 0;
keyid_t kid = 0;
risp_length_t val_len;
risp_length_t processed;
assert(master && length > 0 && data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
assert(risp_isset(master->risp_data, STASH_CMD_ROW_ID));
rid = risp_getvalue(master->risp_data, STASH_CMD_ROW_ID);
assert(rid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_NAMESPACE_ID));
nsid = risp_getvalue(master->risp_data, STASH_CMD_NAMESPACE_ID);
assert(nsid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_TABLE_ID));
tid = risp_getvalue(master->risp_data, STASH_CMD_TABLE_ID);
assert(tid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_KEY_ID));
kid = risp_getvalue(master->risp_data, STASH_CMD_KEY_ID);
assert(kid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_VALUE));
val_len = risp_getlength(master->risp_data, STASH_CMD_VALUE);
assert(val_len > 0);
printf("Set Attribute: [nsid:%d, tid:%d, rid:%d, kid:%d, val-len:%d]\n", nsid, tid, rid, kid, val_len);
}
static void cmdSetPassword(master_t *master, risp_length_t length, void *data)
{
userid_t id;
risp_length_t processed;
assert(master);
assert(length > 0);
assert(data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
assert(risp_isset(master->risp_data, STASH_CMD_PASSWORD) != 0);
assert(risp_isset(master->risp_data, STASH_CMD_USER_ID) != 0);
id = risp_getvalue(master->risp_data, STASH_CMD_USER_ID);
assert(id > 0);
printf("Password set: [uid:%d]\n", id);
}
static void cmdCreateTable(master_t *master, risp_length_t length, void *data)
{
nsid_t nsid = 0;
tableid_t tid = 0;
char *tablename;
risp_length_t processed;
assert(master);
assert(length > 0);
assert(data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
// if we have a namespace, get it.
assert(risp_isset(master->risp_data, STASH_CMD_NAMESPACE_ID));
nsid = risp_getvalue(master->risp_data, STASH_CMD_NAMESPACE_ID);
assert(nsid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_TABLE_ID));
tid = risp_getvalue(master->risp_data, STASH_CMD_TABLE_ID);
assert(tid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_TABLE));
tablename = risp_getstring(master->risp_data, STASH_CMD_TABLE);
assert(tablename);
printf("Create Table: [nsid:%d, tid:%d] '%s'", nsid, tid, tablename);
if (risp_isset(master->risp_data, STASH_CMD_STRICT) != 0) { printf(" STRICT"); }
if (risp_isset(master->risp_data, STASH_CMD_UNIQUE) != 0) { printf(" UNIQUE"); }
if (risp_isset(master->risp_data, STASH_CMD_OVERWRITE) != 0) { printf(" OVERWRITE"); }
printf("\n");
}
static void cmdCreateKey(master_t *master, risp_length_t length, void *data)
{
nsid_t nsid = 0;
tableid_t tid = 0;
keyid_t kid = 0;
char *keyname;
risp_length_t processed;
assert(master);
assert(length > 0);
assert(data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
// if we have a namespace, get it.
assert(risp_isset(master->risp_data, STASH_CMD_NAMESPACE_ID));
nsid = risp_getvalue(master->risp_data, STASH_CMD_NAMESPACE_ID);
assert(nsid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_TABLE_ID));
tid = risp_getvalue(master->risp_data, STASH_CMD_TABLE_ID);
assert(tid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_KEY_ID));
kid = risp_getvalue(master->risp_data, STASH_CMD_KEY_ID);
assert(kid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_KEY));
keyname = risp_getstring(master->risp_data, STASH_CMD_KEY);
assert(keyname);
printf("Create Key: [nsid:%d, tid:%d, kid:%d] '%s'\n", nsid, tid, kid, keyname);
}
static void cmdCreateName(master_t *master, risp_length_t length, void *data)
{
nsid_t nsid = 0;
tableid_t tid = 0;
nameid_t nid = 0;
char *rowname;
risp_length_t processed;
assert(master && length > 0 && data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
// if we have a namespace, get it.
assert(risp_isset(master->risp_data, STASH_CMD_NAMESPACE_ID));
nsid = risp_getvalue(master->risp_data, STASH_CMD_NAMESPACE_ID);
assert(nsid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_TABLE_ID));
tid = risp_getvalue(master->risp_data, STASH_CMD_TABLE_ID);
assert(tid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_NAME_ID));
nid = risp_getvalue(master->risp_data, STASH_CMD_NAME_ID);
assert(nid > 0);
assert(risp_isset(master->risp_data, STASH_CMD_NAME));
rowname = risp_getstring(master->risp_data, STASH_CMD_NAME);
assert(rowname);
printf("Create Name: [nsid:%d, tid:%d, nid:%d] '%s'\n", nsid, tid, nid, rowname);
}
int main(int argc, char **argv)
{
// parameters that are provided.
char *srv = "127.0.0.1";
int port = DEFAULT_PORT;
// this data object will be passed to all the callback routines. Initialise it.
data_t data;
data.handle = -1;
data.msg_id = 0;
data.latest_msg_id = 0;
data.name = NULL;
// get the command line options.
int c;
while ((c = getopt(argc, argv, "p:s:h")) != -1) {
switch (c) {
case 'p':
port = atoi(optarg);
assert(port > 0);
break;
case 's':
srv = strdup(optarg);
assert(srv != NULL);
break;
case 'h':
printf("usage:\n\nrisp_chat_stream2 [-s server] [-p port] [-h]\n");
exit(1);
break;
default:
fprintf(stderr, "Illegal argument \"%c\"\n", c);
return 1;
}
}
// set the signal trap, so we can break out of the loop when user presses Ctrl-C.
signal(SIGINT, sig_handler);
// get an initialised risp structure.
RISP_PTR risp = risp_init();
assert(risp);
// add the callback routines for the commands we are going to receive.
risp_add_command(risp, CMD_NOP, &cmdNop);
risp_add_command(risp, CMD_HELLO_ACK, &cmdHelloAck);
risp_add_command(risp, CMD_MSG_ID, &cmdMsgID);
risp_add_command(risp, CMD_LATEST_MSG_ID, &cmdLatestMsgID);
risp_add_command(risp, CMD_NAME, &cmdName);
risp_add_command(risp, CMD_MESSAGE, &cmdMessage);
risp_add_invalid(risp, &cmdInvalid);
// connect to the remote socket. We will leave it in blocking mode. When we do the recv, we
// will specify that the recv operation is non-blocking.
assert(srv && port > 0);
data.handle = sock_connect(srv, port);
if (data.handle <= 0) {
printf("Unable to connect to %s:%d\n", srv, port);
}
else {
// now that we are connected, first we need to send the HELLO and NO_FOLLOW commands.
// These commands could have been lumped together in a single send, but for the purpose of
// demonstrating RISP, this code does each operationg specifically.
if (sendInit(data.handle) != 0) {
// couldn't send the command, close the handle, and exit.
close(data.handle);
data.handle = -1;
}
// setup the initial buffer. Since we dont really know how much data we will receive from
// the server, we will grow the buffer as needed.
int max = 0;
char *buffer = NULL;
int used = 0;
int goodbye_sent = 0; // if we have sent a GOODBYE, we dont want to
// we will loop until the socket is closed. If the user presses Ctrl-C, we will send a
// GOODBYE command to the server, which will then close the socket. If the user presses
// Ctrl-C more than once, we will not wait for the server, and will close the socket
// directly. Every time the user presses Ctrl-C, it should break out of the sleep, so it
// should respond pretty quickly.
while (data.handle >= 0) {
// printf(".");
assert(used <= max);
if (max-used < CHUNK_SIZE) {
max += CHUNK_SIZE;
buffer = realloc(buffer, max);
assert(buffer);
// fprintf(stderr, "Increased Max Buffer to %d\n", max);
}
// check for data on the socket. We will do the receive in non-blocking mode, so if
// there is no data, it will return immediately. If we received no data, we will wait for
// 1 second before trying again. If we have waited for 5 seconds, then we need to
// send a NOP to keep the connection alive.
char *ptr = buffer + used;
int avail = max - used;
// fprintf(stderr, "About to recv. avail=%d\n", avail);
int result = recv(data.handle, ptr, avail, MSG_DONTWAIT);
// printf("Recv: result=%d, used=%d, max=%d\n", result, used, max);
if (result < 0) {
assert(result == -1);
if (errno == EWOULDBLOCK || errno == EAGAIN) {
// there was no data to read from the socket.
// we will now sleep for 1 second. If the user pressed Ctrl-C, then the sleep
// function will exit immediately. Only do the sleep if Ctrl-C hasn't been hit.
if (_sigtrap == 0) { sleep(1); }
}
else {
fprintf(stderr, "Unexpected result received from socket. errno=%d '%s'\n", errno, strerror(errno));
}
}
else if (result == 0) {
// socket has closed.
close(data.handle);
data.handle = -1;
}
else {
assert(result > 0);
assert(result <= avail);
assert(used >= 0);
used += result;
assert(used <= max);
// if we have some data received, then we need to process it.
// fprintf(stderr, "Processing: %d\n", used);
risp_length_t processed = risp_process(risp, &data, used, buffer);
// fprintf(stderr, "Processed: %ld\n", processed);
assert(processed >= 0);
assert(processed <= used);
if (processed < used) {
// Our commands have probably been fragmented.
// fprintf(stderr, "Fragmented commands: processed=%ld, used=%d, max=%d\n", processed, used, max);
fflush(stdout);
if (processed > 0) {
// we need to remove from the buffer the data that we have processed.
// This is a simple approach, but not the most efficient.
assert(sizeof(*buffer) == 1);
char *ptr = buffer+processed;
size_t length = used-processed;
assert((processed + length) == used);
// fprintf(stderr, "Moving data. length=%ld\n", length);
memmove(buffer, ptr, length);
used -= processed;
assert(used > 0);
assert(used < max);
// fprintf(stderr, "After move. used=%d, max=%d\n", used, max);
}
}
else { used = 0; }
assert(used >= 0 && used <= max);
}
if (data.handle >= 0) {
if (_sigtrap == 1 && goodbye_sent == 0) {
fprintf(stderr, "Closing...\n");
// TODO: shouldn't just close the socket. Should instead send GOODBYE command and wait for socket to close.
if (sendGoodbye(data.handle) != 0) {
close(data.handle);
data.handle = -1;
}
goodbye_sent ++;
}
else if (_sigtrap > 1) {
close(data.handle);
data.handle = -1;
}
}
}
}
// clean up the risp structure.
risp_shutdown(risp);
risp = NULL;
return 0;
}
int main(int argc, char **argv)
{
int c;
risp_t *risp;
int sent;
char *srv = "127.0.0.1";
char *filename = NULL;
int port = DEFAULT_PORT;
int avail;
int processed;
int len;
int done = 0, t;
node_t node;
// initialise the node data.
node.handle = INVALID_HANDLE;
node.verbose = 0;
node.finished = 0;
expbuf_init(&node.in, 1024);
expbuf_init(&node.out, 1024);
expbuf_init(&node.data.file, 0);
expbuf_init(&node.data.data, 0);
node.data.op = CMD_NOP;
node.data.size = 0;
node.data.offset = 0;
node.filehandle = INVALID_HANDLE;
node.size = 0;
node.offset = 0;
while ((c = getopt(argc, argv, "f:p:s:v")) != -1) {
switch (c) {
case 'f':
filename = optarg;
assert(filename != NULL);
break;
case 'p':
port = atoi(optarg);
assert(port > 0);
break;
case 's':
srv = optarg;
assert(srv != NULL);
break;
case 'v':
node.verbose ++;
break;
default:
fprintf(stderr, "Illegal argument \"%c\"\n", c);
return 1;
}
}
if (filename == NULL) {
fprintf(stderr, "Need a filename.\n\n");
exit(1);
}
// get an initialised risp structure.
risp = risp_init();
if (risp == NULL) {
printf("Unable to initialise RISP library.\n");
}
else {
risp_add_command(risp, CMD_CLEAR, &cmdClear);
risp_add_command(risp, CMD_EXECUTE, &cmdExecute);
risp_add_command(risp, CMD_OFFSET, &cmdOffset);
risp_add_command(risp, CMD_SIZE, &cmdSize);
risp_add_command(risp, CMD_FILE, &cmdFile);
risp_add_command(risp, CMD_DATA, &cmdData);
risp_add_command(risp, CMD_PUT, &cmdPut);
risp_add_command(risp, CMD_GET, &cmdGet);
len = strlen(filename);
assert(len < 256);
assert(node.out.length == 0);
addCmd(&node.out, CMD_CLEAR);
addCmd(&node.out, CMD_GET);
addCmdShortStr(&node.out, CMD_FILE, len, filename);
addCmd(&node.out, CMD_EXECUTE);
// and process it a lot of time.
printf("Sending request for: %s\n", filename);
// connect to the remote socket.
node.handle = sock_connect(srv, port);
if (node.handle <= 0) {
printf("Unable to connect to %s:%d\n", srv, port);
}
else {
while (sigtrap == 0 && node.finished == 0) {
// continue to send data to the socket over and over as quickly as possible.
while (node.out.length > 0) {
assert(node.handle > 0);
sent = sock_send(node.handle, node.out.data, node.out.length);
if (sent < 0) { sigtrap ++; }
else {
assert(sent > 0);
assert(sent <= node.out.length);
if (sent == node.out.length) { expbuf_clear(&node.out); }
else { expbuf_purge(&node.out, sent); }
}
}
// if we didn't generate a fail during the write, then we do a read.
if (sigtrap == 0) {
avail = node.in.max - node.in.length;
if (avail < 1024) {
expbuf_shrink(&node.in, 1024);
avail = 1024;
}
sent = sock_receive(node.handle, node.in.data + node.in.length, avail);
if (sent < 0) { sigtrap ++; }
else {
assert(sent > 0);
node.in.length += sent;
assert(node.in.length <= node.in.max);
if (sent == avail) {
// we filled the incoming buffer, so we need to double it.
expbuf_shrink(&node.in, node.in.max * 2);
}
processed = risp_process(risp, &node, node.in.length, (unsigned char *) node.in.data);
// printf("Processed %d.\n", processed);
if (processed > 0) {
expbuf_purge(&node.in, processed);
if (node.offset > 0 && node.size > 0) {
t = (node.offset / (node.size/100));
if (t > done) {
done = t;
printf("Done - %c%d\n", '%', done);
}
}
}
}
}
}
// close the socket.
if (node.handle >= 0) {
close(node.handle);
}
}
// clean up the risp structure.
risp_shutdown(risp);
}
return 0;
}
// this function is called when we have received a new socket. We need to
// create a new node, and add it to our node list. We need to pass to the node
// any pointers to other sub-systems that it will need to have, and then we
// insert the node into the 'node-circle' somewhere. Finally, we need to add
// the new node to the event base.
static void node_event_handler(int hid, short flags, void *data)
{
node_t *node;
unsigned int avail;
int res;
assert(hid >= 0);
node = (node_t *) data;
assert(node != NULL);
assert(node->handle == hid);
assert(node->stats != NULL);
assert(node->active == true);
assert(node->event.ev_base != NULL);
if (flags & EV_READ) {
assert(node->in.max >= DEFAULT_BUFFSIZE);
avail = node->in.max - node->in.length;
if (avail < DEFAULT_BUFFSIZE) {
// we dont have much space left in the buffer, lets double its size.
expbuf_shrink(&node->in, node->in.max * 2);
avail = node->in.max - node->in.length;
}
// for performance reasons, we will read the data in directly into the expanding buffer.
assert(avail >= DEFAULT_BUFFSIZE);
node->stats->reads++;
res = read(hid, node->in.data+node->in.length, avail);
if (res > 0) {
node->stats->in_bytes += res;
node->in.length += res;
assert(node->in.length <= node->in.max);
// if we pulled out the max we had avail in our buffer, that means we can pull out more at a time.
if (res == avail) {
expbuf_shrink(&node->in, node->in.max * 2);
}
assert(node->active);
if (node->in.length > 0) {
assert(node->risp != NULL);
node->stats->cycles ++;
res = risp_process(node->risp, node, node->in.length, (unsigned char *) node->in.data);
assert(res <= node->in.length);
assert(res >= 0);
if (res < node->in.length) {
node->stats->undone += (node->in.length - res);
}
if (res > 0) {
expbuf_purge(&node->in, res);
}
}
}
else if (res == 0) {
node->handle = INVALID_HANDLE;
if (node->filehandle != INVALID_HANDLE) {
close(node->filehandle);
node->filehandle = INVALID_HANDLE;
}
node_clear(node);
assert(node->active == false);
printf("Node[%d] closed while reading.\n", hid);
}
else {
assert(res == -1);
if (errno != EAGAIN && errno != EWOULDBLOCK) {
close(node->handle);
node->handle = INVALID_HANDLE;
if (node->filehandle != INVALID_HANDLE) {
close(node->filehandle);
node->filehandle = INVALID_HANDLE;
}
node_clear(node);
assert(node->active == false);
printf("Node[%d] closed while reading- because of error: %d\n", hid, errno);
}
}
}
if (flags & EV_WRITE && node->active) {
// we've requested the event, so we should have data to process.
assert(node->out.length > 0);
assert(node->out.length <= node->out.max);
node->stats->writes ++;
res = send(hid, node->out.data, node->out.length, 0);
if (res > 0) {
// we managed to send some, or maybe all....
assert(res <= node->out.length);
node->stats->out_bytes += res;
expbuf_purge(&node->out, res);
// if we are in the process of transmitting a file, then we need
// to get more file data and put in the buffer, since we depleted
// some of it.
if (node->sending) {
sendFileData(node);
}
}
else if (res == 0) {
node->handle = INVALID_HANDLE;
if (node->filehandle != INVALID_HANDLE) {
close(node->filehandle);
node->filehandle = INVALID_HANDLE;
}
node_clear(node);
assert(node->active == false);
printf("Node[%d] closed while writing.\n", hid);
}
else {
assert(res == -1);
if (errno != EAGAIN && errno != EWOULDBLOCK) {
close(node->handle);
node->handle = INVALID_HANDLE;
if (node->filehandle != INVALID_HANDLE) {
close(node->filehandle);
node->filehandle = INVALID_HANDLE;
}
node_clear(node);
assert(node->active == false);
printf("Node[%d] closed while writing - because of error: %d\n", hid, errno);
}
}
// if we have sent everything, then we dont need to wait for a WRITE event anymore, so we need to re-establish the events.
if (node->active && node->out.length == 0) {
if (event_del(&node->event) != -1) {
event_set(&node->event, hid, EV_READ | EV_PERSIST, node_event_handler, (void *)node);
event_base_set(node->event.ev_base, &node->event);
event_add(&node->event, 0);
}
}
}
}
static void cmdGrant(master_t *master, risp_length_t length, void *data)
{
userid_t uid = 0;
nsid_t nsid = 0;
tableid_t tid = 0;
risp_length_t processed;
assert(master);
assert(length > 0);
assert(data);
assert(master->risp_data);
risp_clear_all(master->risp_data);
processed = risp_process(master->risp_data, NULL, length, data);
assert(processed == length);
// get the userid.
assert(risp_isset(master->risp_data, STASH_CMD_USER_ID) != 0);
uid = risp_getvalue(master->risp_data, STASH_CMD_USER_ID);
assert(uid > 0);
// if we have a namespace, get it.
if (risp_isset(master->risp_data, STASH_CMD_NAMESPACE_ID) != 0) {
nsid = risp_getvalue(master->risp_data, STASH_CMD_NAMESPACE_ID);
assert(nsid > 0);
if (risp_isset(master->risp_data, STASH_CMD_TABLE_ID) != 0) {
tid = risp_getvalue(master->risp_data, STASH_CMD_TABLE_ID);
assert(tid > 0);
printf("Grant: [uid:%d, nsid:%d, tid:%d]", uid, nsid, tid);
}
else {
printf("Grant: [uid:%d, nsid:%d]", uid, nsid);
}
}
else {
printf("Grant: [uid:%d]", uid);
}
if (risp_isset(master->risp_data, STASH_CMD_RIGHT_ADDUSER) != 0) {
printf(" ADDUSER");
}
if (risp_isset(master->risp_data, STASH_CMD_RIGHT_CREATE) != 0) {
printf(" CREATE");
}
if (risp_isset(master->risp_data, STASH_CMD_RIGHT_DROP) != 0) {
printf(" DROP");
}
if (risp_isset(master->risp_data, STASH_CMD_RIGHT_SET) != 0) {
printf(" SET");
}
if (risp_isset(master->risp_data, STASH_CMD_RIGHT_UPDATE) != 0) {
printf(" UPDATE");
}
if (risp_isset(master->risp_data, STASH_CMD_RIGHT_DELETE) != 0) {
printf(" DELETE");
}
if (risp_isset(master->risp_data, STASH_CMD_RIGHT_QUERY) != 0) {
printf(" QUERY");
}
if (risp_isset(master->risp_data, STASH_CMD_RIGHT_LOCK) != 0) {
printf(" LOCK");
}
printf("\n");
}
