mirror of
https://github.com/penpot/penpot.git
synced 2025-03-16 01:31:22 -05:00
🎉 Add team-id channel subscriptions.
This commit is contained in:
Andrey Antukh
Alonso Torres
parent
60b241e867
commit
065fc157bf
4 changed files with 188 additions and 194 deletions
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@ -27,14 +27,24 @@
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(s/def ::websocket-params
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(s/keys :req-un [::file-id ::session-id]))
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(def sql:retrieve-file
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"select f.id as id,
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p.team_id as team_id
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from file as f
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join project as p on (p.id = f.project_id)
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where f.id = ?")
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(defn retrieve-file
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[conn id]
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(db/exec-one! conn [sql:retrieve-file id]))
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(defn websocket
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[{:keys [profile-id] :as req}]
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(let [params (us/conform ::websocket-params (:params req))
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file (db/get-by-id db/pool :file (:file-id params))
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file (retrieve-file db/pool (:file-id params))
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params (assoc params
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:profile-id profile-id
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:file file)]
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:team-id (:team-id file))]
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(cond
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(not profile-id)
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{:error {:code 403 :message "Authentication required"}}
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@ -35,10 +35,8 @@
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;; --- API FORWARD
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(defn subscribe
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([topic]
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(redis/subscribe client topic))
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([topic xf]
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(redis/subscribe client topic xf)))
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[opts]
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(redis/subscribe client opts))
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(defn run!
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[cmd params]
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@ -15,173 +15,19 @@
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[app.db :as db]
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[app.metrics :as mtx]
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[app.redis :as redis]
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[app.util.async :as aa]
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[app.util.time :as dt]
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[app.util.transit :as t]
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[clojure.core.async :as a :refer [>! <!]]
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[clojure.core.async :as a]
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[clojure.tools.logging :as log]
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[promesa.core :as p]
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[ring.adapter.jetty9 :as jetty]))
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(defmacro go-try
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[& body]
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`(a/go
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(try
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~@body
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(catch Throwable e# e#))))
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(defmacro <?
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[ch]
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`(let [r# (a/<! ~ch)]
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(if (instance? Throwable r#)
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(throw r#)
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r#)))
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(defmacro thread-try
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[& body]
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`(a/thread
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(try
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~@body
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(catch Throwable e#
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e#))))
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(defn- publish
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[channel message]
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(go-try
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(let [message (t/encode-str message)]
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(<? (redis/run :publish {:channel (str channel)
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:message message})))))
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(def ^:private
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sql:retrieve-presence
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"select * from presence
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where file_id=?
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and (clock_timestamp() - updated_at) < '5 min'::interval")
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(defn- retrieve-presence
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[file-id]
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(thread-try
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(let [rows (db/exec! db/pool [sql:retrieve-presence file-id])]
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(mapv (juxt :session-id :profile-id) rows))))
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(def ^:private
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sql:update-presence
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"insert into presence (file_id, session_id, profile_id, updated_at)
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values (?, ?, ?, clock_timestamp())
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on conflict (file_id, session_id, profile_id)
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do update set updated_at=clock_timestamp()")
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(defn- update-presence
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[file-id session-id profile-id]
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(thread-try
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(let [now (dt/now)
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sql [sql:update-presence file-id session-id profile-id]]
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(db/exec-one! db/pool sql))))
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(defn- delete-presence
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[file-id session-id profile-id]
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(thread-try
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(db/delete! db/pool :presence {:file-id file-id
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:profile-id profile-id
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:session-id session-id})))
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;; --- WebSocket Messages Handling
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(defmulti handle-message
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(fn [ws message] (:type message)))
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;; TODO: check permissions for join a file-id channel (probably using
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;; single use token for avoid explicit database query).
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(defmethod handle-message :connect
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[{:keys [file-id profile-id session-id output] :as ws} message]
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(log/debugf "profile '%s' is connected to file '%s'" profile-id file-id)
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(go-try
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(<? (update-presence file-id session-id profile-id))
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(let [members (<? (retrieve-presence file-id))]
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(<? (publish file-id {:type :presence :sessions members})))))
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(defmethod handle-message :disconnect
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[{:keys [profile-id file-id session-id] :as ws} message]
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(log/debugf "profile '%s' is disconnected from '%s'" profile-id file-id)
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(go-try
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(<? (delete-presence file-id session-id profile-id))
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(let [members (<? (retrieve-presence file-id))]
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(<? (publish file-id {:type :presence :sessions members})))))
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(defmethod handle-message :keepalive
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[{:keys [profile-id file-id session-id] :as ws} message]
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(update-presence file-id session-id profile-id))
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(defmethod handle-message :pointer-update
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[{:keys [profile-id file-id session-id] :as ws} message]
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(let [message (assoc message
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:profile-id profile-id
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:session-id session-id)]
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(publish file-id message)))
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(defmethod handle-message :default
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[ws message]
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(a/go
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(log/warnf "received unexpected message: " message)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; WebSocket Handler
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;; WebSocket Http Handler
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defn- forward-message
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[{:keys [out session-id profile-id] :as ws} message]
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(go-try
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(when-not (= (:session-id message) session-id)
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(>! out message))))
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(defn start-loop!
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[{:keys [in out sub] :as ws}]
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(go-try
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(loop []
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(let [timeout (a/timeout 30000)
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[val port] (a/alts! [in sub timeout])]
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;; (prn "alts" val "from" (cond (= port in) "input"
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;; (= port sub) "redis"
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;; :else "timeout"))
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(cond
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;; Process message coming from connected client
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(and (= port in) (not (nil? val)))
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(do
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(<? (handle-message ws val))
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(recur))
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;; Forward message to the websocket
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(and (= port sub) (not (nil? val)))
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(do
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(<? (forward-message ws val))
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(recur))
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;; Timeout channel signaling
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(= port timeout)
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(do
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(>! out {:type :ping})
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(recur))
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:else
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nil)))))
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(defn disconnect!
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[conn]
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(let [session (.getSession conn)]
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(when session
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(.disconnect session))))
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(defn- on-subscribed
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[{:keys [conn] :as ws}]
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(a/go
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(try
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(<? (handle-message ws {:type :connect}))
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(<? (start-loop! ws))
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(<? (handle-message ws {:type :disconnect}))
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(catch Throwable err
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(log/errorf err "Unexpected exception on websocket handler.")
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(disconnect! conn)))))
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(declare on-connect)
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(defrecord WebSocket [conn in out sub])
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@ -194,17 +40,17 @@
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:help "A total number of messages handled by the notifications service."}))
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(defn websocket
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[{:keys [file-id profile-id] :as params}]
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[{:keys [file-id team-id profile-id] :as params}]
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(let [in (a/chan 32)
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out (a/chan 32)]
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{:on-connect
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(fn [conn]
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(metrics-active-connections :inc)
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(let [xf (map t/decode-str)
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sub (redis/subscribe (str file-id) xf)
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(let [sub (redis/subscribe {:xform (map t/decode-str)
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:topics [file-id team-id]})
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ws (WebSocket. conn in out sub nil params)]
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;; RCV LOOP
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;; message forwarding loop
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(a/go-loop []
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(let [val (a/<! out)]
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(when-not (nil? val)
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@ -212,7 +58,7 @@
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(recur))))
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(a/go
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(a/<! (on-subscribed ws))
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(a/<! (on-connect ws))
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(a/close! sub))))
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:on-error
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@ -235,4 +81,135 @@
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:on-bytes
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(constantly nil)}))
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(declare handle-message)
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(declare start-loop!)
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(defn- on-connect
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[{:keys [conn] :as ws}]
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(a/go
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(try
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(aa/<? (handle-message ws {:type :connect}))
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(aa/<? (start-loop! ws))
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(aa/<? (handle-message ws {:type :disconnect}))
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(catch Throwable err
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(log/errorf err "Unexpected exception on websocket handler.")
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(let [session (.getSession conn)]
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(when session
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(.disconnect session)))))))
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(defn- start-loop!
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[{:keys [in out sub session-id] :as ws}]
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(aa/go-try
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(loop []
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(let [timeout (a/timeout 30000)
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[val port] (a/alts! [in sub timeout])]
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;; (prn "alts" val "from" (cond (= port in) "input"
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;; (= port sub) "redis"
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;; :else "timeout"))
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(cond
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;; Process message coming from connected client
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(and (= port in) (not (nil? val)))
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(do
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(aa/<? (handle-message ws val))
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(recur))
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;; Forward message to the websocket
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(and (= port sub) (not (nil? val)))
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(do
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(when-not (= (:session-id val) session-id)
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(a/>! out val))
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(recur))
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;; Timeout channel signaling
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(= port timeout)
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(do
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(a/>! out {:type :ping})
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(recur))
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:else
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nil)))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Incoming Messages Handling
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; --- Impl
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(defn- publish
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[channel message]
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(aa/go-try
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(let [message (t/encode-str message)]
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(aa/<? (redis/run :publish {:channel (str channel)
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:message message})))))
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(def ^:private
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sql:retrieve-presence
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"select * from presence
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where file_id=?
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and (clock_timestamp() - updated_at) < '5 min'::interval")
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(defn- retrieve-presence
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[file-id]
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(aa/thread-try
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(let [rows (db/exec! db/pool [sql:retrieve-presence file-id])]
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(mapv (juxt :session-id :profile-id) rows))))
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(def ^:private
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sql:update-presence
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"insert into presence (file_id, session_id, profile_id, updated_at)
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values (?, ?, ?, clock_timestamp())
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on conflict (file_id, session_id, profile_id)
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do update set updated_at=clock_timestamp()")
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(defn- update-presence
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[file-id session-id profile-id]
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(aa/thread-try
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(let [now (dt/now)
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sql [sql:update-presence file-id session-id profile-id]]
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(db/exec-one! db/pool sql))))
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(defn- delete-presence
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[file-id session-id profile-id]
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(aa/thread-try
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(db/delete! db/pool :presence {:file-id file-id
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:profile-id profile-id
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:session-id session-id})))
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(defmulti handle-message
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(fn [ws message] (:type message)))
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;; TODO: check permissions for join a file-id channel (probably using
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;; single use token for avoid explicit database query).
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(defmethod handle-message :connect
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[{:keys [file-id profile-id session-id output] :as ws} message]
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(log/debugf "profile '%s' is connected to file '%s'" profile-id file-id)
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(aa/go-try
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(aa/<? (update-presence file-id session-id profile-id))
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(let [members (aa/<? (retrieve-presence file-id))]
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(aa/<? (publish file-id {:type :presence :sessions members})))))
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(defmethod handle-message :disconnect
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[{:keys [profile-id file-id session-id] :as ws} message]
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(log/debugf "profile '%s' is disconnected from '%s'" profile-id file-id)
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(aa/go-try
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(aa/<? (delete-presence file-id session-id profile-id))
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(let [members (aa/<? (retrieve-presence file-id))]
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(aa/<? (publish file-id {:type :presence :sessions members})))))
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(defmethod handle-message :keepalive
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[{:keys [profile-id file-id session-id] :as ws} message]
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(update-presence file-id session-id profile-id))
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(defmethod handle-message :pointer-update
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[{:keys [profile-id file-id session-id] :as ws} message]
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(let [message (assoc message
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:profile-id profile-id
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:session-id session-id)]
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(publish file-id message)))
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(defmethod handle-message :default
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[ws message]
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(a/go
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(log/warnf "received unexpected message: " message)))
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|
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@ -22,32 +22,38 @@
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io.lettuce.core.pubsub.api.sync.RedisPubSubCommands
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))
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(defrecord Client [client uri]
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java.lang.AutoCloseable
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(close [_]
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(.shutdown ^RedisClient client)))
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(defrecord Client [^RedisClient inner
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^RedisURI uri]
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clojure.lang.IDeref
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(deref [_] inner)
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(defrecord Connection [^RedisAsyncCommands cmd]
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java.lang.AutoCloseable
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(close [_]
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(let [conn (.getStatefulConnection cmd)]
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(.close ^StatefulRedisConnection conn))))
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(.shutdown inner)))
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(defrecord Connection [^StatefulRedisConnection inner
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^RedisAsyncCommands cmd]
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clojure.lang.IDeref
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(deref [_] inner)
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java.lang.AutoCloseable
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(close [_]
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(.close ^StatefulRedisConnection inner)))
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(defn client
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[uri]
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(->Client (RedisClient/create) (RedisURI/create uri)))
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(->Client (RedisClient/create)
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(RedisURI/create uri)))
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(defn connect
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[client]
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(let [^RedisURI uri (:uri client)
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^RedisClient client (:client client)
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^StatefulRedisConnection conn (.connect client StringCodec/UTF8 uri)]
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(->Connection (.async conn))))
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[{:keys [uri] :as client}]
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(let [conn (.connect ^RedisClient @client StringCodec/UTF8 ^RedisURI uri)]
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(->Connection conn (.async ^StatefulRedisConnection conn))))
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(defn- impl-subscribe
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[^String topic xf ^StatefulRedisPubSubConnection conn]
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[topics xform ^StatefulRedisPubSubConnection conn]
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(let [cmd (.sync conn)
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output (a/chan 1 (comp (filter string?) xf))
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output (a/chan 1 (comp (filter string?) xform))
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buffer (a/chan (a/sliding-buffer 64))
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sub (reify RedisPubSubListener
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(message [it pattern channel message])
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@ -60,8 +66,8 @@
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(punsubscribed [it pattern count])
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(subscribed [it channel count])
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(unsubscribed [it channel count]))]
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(.addListener conn sub)
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;; Start message event-loop (with keepalive mechanism)
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(a/go-loop []
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(let [[val port] (a/alts! [buffer (a/timeout 5000)])
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message (if (= port buffer) val ::keepalive)]
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|
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@ -73,17 +79,20 @@
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(when (.isOpen conn)
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(.close conn))))))
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(.subscribe ^RedisPubSubCommands cmd (into-array String [topic]))
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;; Synchronously subscribe to topics
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(.addListener conn sub)
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(.subscribe ^RedisPubSubCommands cmd topics)
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;; Return the output channel
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output))
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(defn subscribe
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([client topic]
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(subscribe client topic (map identity)))
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([client topic xf]
|
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(let [^RedisURI uri (:uri client)
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^RedisClient client (:client client)]
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(->> (.connectPubSub client StringCodec/UTF8 uri)
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(impl-subscribe topic xf)))))
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[{:keys [uri] :as client} {:keys [topic topics xform]}]
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(let [topics (if (vector? topics)
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(into-array String (map str topics))
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(into-array String [(str topics)]))]
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(->> (.connectPubSub ^RedisClient @client StringCodec/UTF8 ^RedisURI uri)
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(impl-subscribe topics xform))))
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(defn- resolve-to-bool
|
||||
[v]
|
||||
|
|
|
|||
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Add table
Reference in a new issue