void Connection_execute_start(Connection *connection, Executor *executor, Batch *batch, int ordinal)
{
DEBUG(("Connection exec\n"));
connection->current_batch = batch;
connection->current_executor = executor;
if(CS_ABORTED == connection->state) {
connection->state = CS_CLOSED;
}
ReplyParser_reset(connection->parser);
Buffer_flip(Batch_write_buffer(batch));
DEBUG(("Connection exec write buff:\n"));
#ifndef NDEBUG
Buffer_dump(Batch_write_buffer(batch), 128);
#endif
//kick off writing:
Connection_write_data(connection, ordinal);
//kick off reading when socket becomes readable
if(CS_CONNECTED == connection->state) {
Executor_notify_event(connection->current_executor, connection, EVENT_READ, ordinal);
}
}
void Connection_read_data(Connection *connection, int ordinal)
{
if(CS_ABORTED == connection->state) {
return;
}
DEBUG(("connection read data fd: %d\n", connection->sockfd));
assert(connection->current_batch != NULL);
assert(connection->current_executor != NULL);
assert(CS_CONNECTED == connection->state);
Buffer *buffer = Batch_read_buffer(connection->current_batch);
assert(buffer != NULL);
while(Batch_has_command(connection->current_batch)) {
DEBUG(("exec rp\n"));
Reply *reply = NULL;
ReplyParserResult rp_res = ReplyParser_execute(connection->parser, Buffer_data(buffer), Buffer_position(buffer), &reply);
switch(rp_res) {
case RPR_ERROR: {
Connection_abort(connection, "result parse error");
return;
}
case RPR_MORE: {
DEBUG(("read data RPR_MORE buf recv\n"));
size_t res = Buffer_recv(buffer, connection->sockfd);
DEBUG(("read data RPR_MORE res: %d\n", res));
#ifndef NDEBUG
Buffer_dump(buffer, 128);
#endif
if(res == -1) {
if(errno == EAGAIN) {
DEBUG(("read data expecting more data in future, adding event\n"));
Executor_notify_event(connection->current_executor, connection, EVENT_READ, ordinal);
return;
}
else {
Connection_abort(connection, "read error, errno: [%d] %s", errno, strerror(errno));
return;
}
}
else if(res == 0) {
Connection_abort(connection, "read eof");
return;
}
break;
}
case RPR_REPLY: {
DEBUG(("read data RPR_REPLY batch add reply\n"));
Batch_add_reply(connection->current_batch, reply);
break;
}
default:
Connection_abort(connection, "unexpected result parser result, rpres: %d", rp_res);
return;
}
}
}
void Connection_write_data(Connection *connection, int ordinal)
{
DEBUG(("connection write_data fd: %d\n", connection->sockfd));
assert(connection->current_batch != NULL);
assert(connection->current_executor != NULL);
if(CS_ABORTED == connection->state) {
return;
}
if(CS_CLOSED == connection->state) {
if(-1 == Connection_create_socket(connection)) {
//already aborted in create_socket
return;
}
//connect the socket
struct addrinfo *addrinfo = connection->addrinfo;
if(-1 == connect(connection->sockfd, addrinfo->ai_addr, addrinfo->ai_addrlen)) {
//open the connection
if(EINPROGRESS == errno) {
//normal async connect
connection->state = CS_CONNECTING;
DEBUG(("async connecting, adding write event\n"));
Executor_notify_event(connection->current_executor, connection, EVENT_WRITE, ordinal);
DEBUG(("write event added, now returning\n"));
return;
}
else {
Connection_abort(connection, "connect error 1, errno [%d] %s", errno, strerror(errno));
return;
}
}
else {
//immediate connect succeeded
DEBUG(("sync connected\n"));
connection->state = CS_CONNECTED;
}
}
if(CS_CONNECTING == connection->state) {
//now check for error to see if we are really connected
int error;
socklen_t len = sizeof(int);
if(-1 == getsockopt(connection->sockfd, SOL_SOCKET, SO_ERROR, &error, &len)) {
Connection_abort(connection, "getsockopt error for connect result, errno: [%d] %s", errno, strerror(errno));
return;
}
if(error != 0) {
Connection_abort(connection, "connect error 2, error: [%d] %s", error, strerror(error));
return;
}
else {
connection->state = CS_CONNECTED;
Executor_notify_event(connection->current_executor, connection, EVENT_READ, ordinal);
}
}
if(CS_CONNECTED == connection->state) {
Buffer *buffer = Batch_write_buffer(connection->current_batch);
assert(buffer != NULL);
while(Buffer_remaining(buffer)) {
//still something to write
size_t res = Buffer_send(buffer, connection->sockfd);
DEBUG(("bfr send res: %d\n", res));
if(res == -1) {
if(errno == EAGAIN) {
Executor_notify_event(connection->current_executor, connection, EVENT_WRITE, ordinal);
return;
}
else {
Connection_abort(connection, "write error, errno: [%d] %s", errno, strerror(errno));
return;
}
}
}
}
}
