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Implement long-polling message passing

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This commit is contained in:
Lucien Greathouse 2018-05-26 00:16:27 -07:00
parent a9d24f1493
commit 92fa52c56f
8 changed files with 93 additions and 39 deletions
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32
server/src/web.rs
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@ -1,5 +1,4 @@
use std::collections::HashMap;
use std::time::Instant;
use std::sync::{mpsc, RwLock, Mutex, Arc};
use rouille;
@ -14,7 +13,6 @@ use session::SessionEvent;
pub struct WebConfig {
pub port: u64,
pub server_id: u64,
pub start_time: Instant,
pub rbx_session: Arc<RwLock<RbxSession>>,
pub events: Arc<RwLock<Vec<SessionEvent>>>,
pub event_listeners: Arc<Mutex<HashMap<Id, mpsc::Sender<()>>>>,
@ -26,22 +24,22 @@ struct ServerInfoResponse<'a> {
server_version: &'static str,
protocol_version: u64,
server_id: &'a str,
current_time: f64,
}
#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
struct ReadAllResponse<'a> {
server_id: &'a str,
current_time: f64,
instances: &'a HashMap<Id, RbxInstance>,
event_cursor: i32,
}
#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
struct SubscribeResponse<'a> {
server_id: &'a str,
events: &'a [SessionEvent],
cursor: i32,
event_cursor: i32,
}
/// Start the Rojo web server and park our current thread.
@ -57,17 +55,10 @@ pub fn start(config: WebConfig) {
(GET) (/) => {
// Get a summary of information about the server.
let current_time = {
let elapsed = config.start_time.elapsed();
elapsed.as_secs() as f64 + elapsed.subsec_nanos() as f64 / 1_000_000_000.0
};
json_response(ServerInfoResponse {
server_version,
protocol_version: 2,
server_id: &server_id,
current_time,
})
},
@ -79,13 +70,13 @@ pub fn start(config: WebConfig) {
{
let events = config.events.read().unwrap();
if cursor < events.len() as i32 - 1 {
let new_events = &events[cursor as usize + 1..];
let new_events = &events[(cursor + 1) as usize..];
let new_cursor = cursor + new_events.len() as i32;
return json_response(SubscribeResponse {
server_id: &server_id,
events: new_events,
cursor: new_cursor,
event_cursor: new_cursor,
});
}
}
@ -110,13 +101,13 @@ pub fn start(config: WebConfig) {
{
let events = config.events.read().unwrap();
let new_events = &events[cursor as usize + 1..];
let new_events = &events[(cursor + 1) as usize..];
let new_cursor = cursor + new_events.len() as i32;
return json_response(SubscribeResponse {
server_id: &server_id,
events: new_events,
cursor: new_cursor,
event_cursor: new_cursor,
});
}
},
@ -124,15 +115,14 @@ pub fn start(config: WebConfig) {
(GET) (/read_all) => {
let rbx_session = config.rbx_session.read().unwrap();
let current_time = {
let elapsed = config.start_time.elapsed();
elapsed.as_secs() as f64 + elapsed.subsec_nanos() as f64 / 1_000_000_000.0
let event_cursor = {
let events = config.events.read().unwrap();
events.len() as i32 - 1
};
json_response(ReadAllResponse {
server_id: &server_id,
current_time,
event_cursor,
instances: &rbx_session.instances,
})
},