penpot/backend/src/app/error_reporter.clj
2020-12-09 14:38:33 +01:00

84 lines
2.7 KiB
Clojure

;; This Source Code Form is subject to the terms of the Mozilla Public
;; License, v. 2.0. If a copy of the MPL was not distributed with this
;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
;;
;; This Source Code Form is "Incompatible With Secondary Licenses", as
;; defined by the Mozilla Public License, v. 2.0.
;;
;; Copyright (c) 2020 Andrey Antukh <niwi@niwi.nz>
(ns app.error-reporter
"A mattermost integration for error reporting."
(:require
[app.common.exceptions :as ex]
[app.common.spec :as us]
[app.config :as cfg]
[app.db :as db]
[app.tasks :as tasks]
[app.util.async :as aa]
[app.worker :as wrk]
[app.util.http :as http]
[clojure.core.async :as a]
[clojure.data.json :as json]
[clojure.spec.alpha :as s]
[clojure.tools.logging :as log]
[cuerdas.core :as str]
[mount.core :as mount :refer [defstate]]
[promesa.exec :as px]))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Public API
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defonce enqueue identity)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Implementation
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defn- send-to-mattermost!
[log-event]
(try
(let [text (str/fmt "Unhandled exception: `host='%s'`, `version=%s`.\n@channel ⇊\n```%s\n```"
(:host cfg/config)
(:full @cfg/version)
(str log-event))
rsp (http/send! {:uri (:error-reporter-webhook cfg/config)
:method :post
:headers {"content-type" "application/json"}
:body (json/write-str {:text text})})]
(when (not= (:status rsp) 200)
(log/warnf "Error reporting webhook replying with unexpected status: %s\n%s"
(:status rsp)
(pr-str rsp))))
(catch Exception e
(log/warnf e "Unexpected exception on error reporter."))))
(defn- send!
[val]
(aa/thread-call wrk/executor (partial send-to-mattermost! val)))
(defn- start
[]
(let [qch (a/chan (a/sliding-buffer 128))]
(log/info "Starting error reporter loop.")
;; Only enable when a valid URL is provided.
(when (:error-reporter-webhook cfg/config)
(alter-var-root #'enqueue (constantly #(a/>!! qch %)))
(a/go-loop []
(let [val (a/<! qch)]
(if (nil? val)
(do
(log/info "Closing error reporting loop.")
(alter-var-root #'enqueue (constantly identity)))
(do
(a/<! (send! val))
(recur))))))
qch))
(defstate reporter
:start (start)
:stop (a/close! reporter))