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Add unsubscribe endpoint

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This commit is contained in:
Lorenz Stechauner
2022-08-27 22:13:19 +02:00
parent 97ae71d553
commit d9672bdac0
6 changed files with 143 additions and 40 deletions
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2
src/usimp/handler/mod.rs
View File

@ -2,6 +2,7 @@ mod authenticate;
mod new_event;
mod ping;
mod subscribe;
mod unsubscribe;
use crate::usimp::*;
use tokio::sync::mpsc;
@ -31,6 +32,7 @@ pub async fn endpoint(
"ping" => input.respond(ping::handle(&input, session).await?, None),
"authenticate" => input.respond(authenticate::handle(&input, session).await?, None),
"subscribe" => input.respond(subscribe::handle(&input, session, tx).await?, Some(OutputAction::Subscribe)),
"unsubscribe" => input.respond(unsubscribe::handle(&input, session).await?, Some(OutputAction::Unsubscribe)),
"new_event" => input.respond(new_event::handle(&input, session).await?, None),
_ => input.new_error(
ErrorKind::UsimpError,

4
src/usimp/handler/new_event.rs
View File

@ -22,14 +22,14 @@ pub async fn handle(input: &InputEnvelope, session: Option<Session>) -> Result<V
}
async fn new_event(input: Input, session: Option<Session>) -> Result<Output, Error> {
let _account = get_account(&session)?;
let _account = get_account_opt(&session)?;
let mut uuids = vec![];
// TODO check permissions
for mut event in input.events {
let uuid = Uuid::new_v4();
event.id = Some(uuid);
uuids.push(uuid);
subscription::push(&input.room_id, event).await?;
subscription::push_room(&input.room_id, event).await?;
}
Ok(Output {events: uuids})
}

12
src/usimp/handler/subscribe.rs
View File

@ -35,8 +35,16 @@ async fn subscribe(
req_nr: Option<u64>,
tx: Option<mpsc::Sender<WebSocketEnvelope>>,
) -> Result<Output, Error> {
let account = get_account(&session)?;
let mut rx = subscription::subscribe_account(account).await;
let session = match session {
Some(s) => s,
None => return Err(Error::new(
ErrorKind::SubscriptionError,
ErrorClass::ClientError,
None,
)),
};
let mut rx = subscription::subscribe_account(&session, req_nr).await?;
match tx {
Some(tx) => {
tokio::spawn(async move {

45
src/usimp/handler/unsubscribe.rs Normal file
View File

@ -0,0 +1,45 @@
use crate::usimp::subscription;
use crate::usimp::*;
use serde::{Deserialize, Serialize};
use serde_json::{from_value, to_value, Value};
use tokio::sync::mpsc;
use crate::websocket::WebSocketEnvelope;
#[derive(Serialize, Deserialize, Clone)]
struct Input {}
#[derive(Serialize, Deserialize, Clone)]
struct Output {}
pub async fn handle(
input: &InputEnvelope,
session: Option<Session>,
) -> Result<Value, Error> {
Ok(to_value(
unsubscribe(
from_value(input.data.clone())?,
session,
input.request_nr,
).await?,
)?)
}
async fn unsubscribe(
_input: Input,
session: Option<Session>,
req_nr: Option<u64>,
) -> Result<Output, Error> {
let session = match session {
Some(s) => s,
None => return Err(Error::new(
ErrorKind::SubscriptionError,
ErrorClass::ClientError,
None,
)),
};
subscription::unsubscribe_account(&session, req_nr).await?;
Ok(Output {})
}

12
src/usimp/mod.rs
View File

@ -93,10 +93,9 @@ pub struct Session {
account: Option<Account>,
}
pub fn get_account(session: &Option<Session>) -> Result<&Account, Error> {
pub fn get_account_opt(session: &Option<Session>) -> Result<&Account, Error> {
match session {
Some(session) => match &session.account {
Some(account) => Ok(&account),
Some(session) => get_account(session),
None => {
return Err(Error::new(
ErrorKind::UsimpError,
@ -104,7 +103,12 @@ pub fn get_account(session: &Option<Session>) -> Result<&Account, Error> {
None,
))
}
},
}
}
pub fn get_account(session: &Session) -> Result<&Account, Error> {
match &session.account {
Some(account) => Ok(&account),
None => {
return Err(Error::new(
ErrorKind::UsimpError,

94
src/usimp/subscription.rs
View File

@ -1,36 +1,80 @@
use crate::database;
use crate::usimp::*;
use std::collections::HashMap;
use std::collections::{HashMap, HashSet};
use std::ops::Deref;
use std::sync::Arc;
use tokio::sync::{mpsc, Mutex};
use tokio::sync::mpsc::Sender;
static mut ROOMS: Option<Arc<Mutex<HashMap<Uuid, Vec<mpsc::Sender<Event>>>>>> = None;
static mut ACCOUNTS: Option<Arc<Mutex<HashMap<Uuid, Vec<mpsc::Sender<Event>>>>>> = None;
#[derive(Clone, Eq, Hash, PartialEq)]
struct Subscription {
session: Uuid,
req_nr: Option<u64>,
}
static mut SUBSCRIPTIONS: Option<Arc<Mutex<HashMap<Subscription, mpsc::Sender<Event>>>>> = None;
static mut ACCOUNTS: Option<Arc<Mutex<HashMap<Uuid, HashSet<Subscription>>>>> = None;
pub fn init() {
unsafe {
ROOMS = Some(Arc::new(Mutex::new(HashMap::new())));
SUBSCRIPTIONS = Some(Arc::new(Mutex::new(HashMap::new())));
ACCOUNTS = Some(Arc::new(Mutex::new(HashMap::new())));
}
}
pub async fn subscribe_account(account: &Account) -> mpsc::Receiver<Event> {
pub async fn subscribe_account(session: &Session, req_nr: Option<u64>) -> Result<mpsc::Receiver<Event>, Error> {
let account = get_account(session)?;
let sub = Subscription {session: session.id, req_nr};
let (tx, rx) = mpsc::channel::<Event>(64);
unsafe {
let mut acc = ACCOUNTS.as_ref().unwrap().lock().await;
match acc.get_mut(&account.id) {
Some(vec) => {
vec.push(tx);
let mut subs = SUBSCRIPTIONS.as_ref().unwrap().lock().await;
let mut accs = ACCOUNTS.as_ref().unwrap().lock().await;
match accs.get_mut(&account.id) {
Some(set) => {
set.insert(sub.clone());
}
None => {
acc.insert(account.id, vec![tx]);
let mut set = HashSet::new();
set.insert(sub.clone());
accs.insert(account.id, set);
}
}
match subs.get_mut(&sub) {
Some(_) => return Err(Error::new(
ErrorKind::SubscriptionError,
ErrorClass::ClientError,
None
)),
None => {
subs.insert(sub.clone(), tx);
}
}
}
rx
Ok(rx)
}
pub async fn push(room_id: &Uuid, event: Event) -> Result<(), Error> {
pub async fn unsubscribe_account(session: &Session, req_nr: Option<u64>) -> Result<(), Error> {
let account = get_account(session)?;
let sub = Subscription {session: session.id, req_nr};
unsafe {
let mut subs = SUBSCRIPTIONS.as_ref().unwrap().lock().await;
let mut accs = ACCOUNTS.as_ref().unwrap().lock().await;
match accs.get_mut(&account.id) {
Some(set) => {
set.remove(&sub);
}
None => {},
}
subs.remove(&sub);
}
Ok(())
}
pub async fn push_room(room_id: &Uuid, event: Event) -> Result<(), Error> {
let backend = database::client().await?;
let accounts = match backend {
database::Client::Postgres(client) => {
@ -50,26 +94,26 @@ pub async fn push(room_id: &Uuid, event: Event) -> Result<(), Error> {
}
};
let mut rooms = unsafe {
let mut rooms = ROOMS.as_ref().unwrap().lock().await;
if let Some(rooms) = rooms.get_mut(room_id) {
rooms.clone()
} else {
Vec::new()
}
};
let mut room: Vec<mpsc::Sender<Event>> = Vec::new();
for account in accounts {
unsafe {
let mut accounts = ACCOUNTS.as_ref().unwrap().lock().await;
if let Some(acc) = accounts.get_mut(&account) {
let mut acc = acc.clone();
rooms.append(&mut acc);
let subs = SUBSCRIPTIONS.as_ref().unwrap().lock().await;
let accs = ACCOUNTS.as_ref().unwrap().lock().await;
if let Some(acc_subs) = accs.get(&account) {
for sub in acc_subs {
match subs.get(sub) {
None => {}
Some(tx) => {
room.push(tx.clone());
}
}
}
}
}
}
for tx in rooms {
for tx in room {
let _res = tx.send(event.clone()).await;
}