CaSelector::CaSelector(QWidget *parent) :
QDialog(parent),
ca_type_edit("ca type"),
formula_edit("ca formula:"),
input_edit("input formula:"),
button_box( new QDialogButtonBox(
QDialogButtonBox::Ok |
QDialogButtonBox::Cancel,
Qt::Horizontal,
this)
)
{
ca_type_edit.widget().addItem("formula");
ca_type_edit.widget().addItem("file");
ca_type_edit.widget().addItem("custom name");
ca_type_edit.widget().setDisabled(true);
vbox_main.addLayout(&ca_type_edit.layout());
vbox_main.addLayout(&formula_edit.layout());
vbox_main.addLayout(&input_edit.layout());
vbox_main.addWidget(button_box);
setLayout(&vbox_main);
connect(button_box, SIGNAL(accepted()), this, SLOT(try_accept()));
connect(button_box, SIGNAL(rejected()), this, SLOT(reject()));
}
static void
proposer_handle_msg(struct evproposer* p, struct bufferevent* bev) //proposer处理各种类型的消息
{
paxos_msg msg;
struct evbuffer* in;
char buffer[PAXOS_MAX_VALUE_SIZE];
in = bufferevent_get_input(bev);
evbuffer_remove(in, &msg, sizeof(paxos_msg)); //将消息文件头从输入buffer移动到msg中
if (msg.data_size > PAXOS_MAX_VALUE_SIZE) { //消息内容过大，丢弃
evbuffer_drain(in, msg.data_size);
paxos_log_error("Discarding message of size %ld. Maximum is %d",
msg.data_size, PAXOS_MAX_VALUE_SIZE);
return;
}
evbuffer_remove(in, buffer, msg.data_size); //将消息的内容移动到buffer中
switch (msg.type) {
case prepare_acks:
proposer_handle_prepare_ack(p, (prepare_ack*)buffer);
break;
case accept_acks:
proposer_handle_accept_ack(p, (accept_ack*)buffer);
break;
case submit:
proposer_handle_client_msg(p, buffer, msg.data_size);
break;
default:
paxos_log_error("Unknow msg type %d not handled", msg.type);
return;
}
try_accept(p);
}
static void
proposer_handle_accepted(struct proposer *p, struct paxos_accepted *ack)
{
if (proposer_receive_accepted(p, ack)) {
rte_log(RTE_LOG_DEBUG, RTE_LOGTYPE_USER8,
"Reach Quorum. Instance: %d\n",
ack->iid);
rte_atomic32_add(&stat, 1);
try_accept(p);
}
}
static void
proposer_handle_promise(struct proposer *p, struct paxos_promise *promise)
{
struct paxos_message msg;
msg.type = PAXOS_PREPARE;
int preempted = proposer_receive_promise(p, promise, &msg.u.prepare);
if (preempted) {
rte_log(RTE_LOG_DEBUG, RTE_LOGTYPE_USER8,
"%s Prepare instance %d ballot %d\n",
__func__, msg.u.prepare.iid, msg.u.prepare.ballot);
send_paxos_message(&msg);
}
try_accept(p);
}
/*proposer处理网络消息接口*/
static void proposer_handle_msg(struct evproposer* p, struct bufferevent* bev)
{
paxos_msg msg;
struct evbuffer* in;
char* buffer = NULL;
/*解读消息头*/
in = bufferevent_get_input(bev);
evbuffer_remove(in, &msg, sizeof(paxos_msg));
/*解读消息体*/
if (msg.data_size > 0) {
buffer = malloc(msg.data_size);
evbuffer_remove(in, buffer, msg.data_size);
}
/*处理消息*/
switch (msg.type){
case prepare_acks:
proposer_handle_prepare_ack(p, (prepare_ack*)buffer);
break;
case accept_acks:
proposer_handle_accept_ack(p, (accept_ack*)buffer);
break;
case submit:
proposer_handle_client_msg(p, buffer, msg.data_size);
break;
default:
paxos_log_error("Unknow msg type %d not handled", msg.type);
return;
}
/*尝试发起提议的第二阶段,阶段性检查*/
try_accept(p);
if (buffer != NULL)
free(buffer);
}
void dispatch(
bool& old_down,
bool new_down,
MouseAcceptInfo& accept_info,
const zw::win::offset_type& position,
MouseButtonType button )
{
if( !old_down ) {
if( new_down ) {
// start
MouseAcceptInfo a = try_accept( position, button );
if( a.receiver ) { // accept
accept_info = a;
a.receiver->on_down(
calcurate_local_mouse_position(
accept_info, position ) );
}
old_down = true;
} else { /* do nothing */ }
} else {
if( accept_info.receiver ) {
if( new_down ) {
// drag
accept_info.receiver->on_drag(
calcurate_local_mouse_position(
accept_info, position ) );
} else {
// end
accept_info.receiver->on_up(
calcurate_local_mouse_position(
accept_info, position ) );
}
} else { /* do nothing */ }
old_down = new_down;
}
}
static void
proposer_handle_accept(struct proposer *p, struct paxos_accept *ack)
{
proposer_propose(p, ack->value.paxos_value_val, ack->value.paxos_value_len);
try_accept(p);
}