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clj_exceptional.clj
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clj_exceptional.clj
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(ns clj-exceptional
(:require [cheshire.core :as che]
[clj-http.client :as client]
[clj-http.util :as cutil])
(:import [java.text SimpleDateFormat])
(:refer-clojure :exclude [try]))
(def _root-dir (.getAbsolutePath (java.io.File. "")))
(def date-format "yyyy-MM-dd'T'HH:mm:ssZZZZ")
(def date-formatter (SimpleDateFormat. date-format))
(def ^:dynamic _api-key (atom ""))
(def _language (atom "clojure"))
(def _language-version (atom (clojure-version)))
(defn key! [new-key]
(reset! _api-key new-key))
(defmacro with-key [key & body]
`(binding [_api-key (atom ~key)]
~@body))
(defn format-timestamp [ts]
(.format date-formatter ts))
(defn now-iso []
(format-timestamp (System/currentTimeMillis)))
(def client-info
{:name "clj-exceptional"
:version "0.7.1"
:protocol_version "6"})
(def shell-env (reduce
#(assoc %1 (.getKey %2) (.getValue %2))
{}
(System/getenv)))
(def java-env (let [props (System/getProperties)]
(reduce #(assoc %1 %2 (.getProperty props %2))
{}
(.stringPropertyNames props))))
;; Threaders
(defmacro defex [name & path]
`(defn ~name [m# val#]
(assoc-in m# [~@path] val#)))
;; Require exceptional infos
;; + exception/backtrace
;; + exception/exception_class
;; + exception/message
;; + exception/occured_at x
;; + application_environment/application_root_directory
;; + application_environment/env
(defn clean-stacktrace [^Exception e]
(->> (.getStackTrace e)
(seq)
(map #(.toString %))))
(defmacro appenv [m & forms]
`(assoc ~m
:application_environment
(-> (:application_environment ~m)
~@forms)))
(defex framework :framework)
(defex env :env)
(defex language :language)
(defex language-version :language_version)
(defex root-dir :application_root_directory)
(defmacro exception [m & forms]
`(assoc ~m
:exception
(-> (:exception ~m)
~@forms)))
(defex occured :occured_at)
(defex message :message)
(defex backtrace :backtrace)
(defex exc-cls :exception_class)
(defmacro request [m & forms]
`(assoc ~m
:request
(-> (:request ~m)
~@forms)))
(defex session :session)
(defex remote-ip :remote_ip)
(defex params :parameters)
(defex action :action)
(defex url :url)
(defex req-method :request_method)
(defex controller :controller)
(defex headers :headers)
(defn format-exception
([^Exception e]
(-> {}
(exception
(backtrace (clean-stacktrace e))
(exc-cls (.getCanonicalName (class e)))
(message (.getMessage e))
(occured (now-iso)))
(appenv
(root-dir _root-dir)
(env java-env)
(language @_language)
(language-version @_language-version))
(assoc :client client-info))))
;;
;; Usage
;;
(defn post
"Posts the given exception map to Exceptional.io."
[exc-map]
(client/post "http://api.exceptional.io/api/errors"
{:query-params {:api_key @_api-key
:protocol_version "6"}
:body (cutil/gzip (.getBytes (che/generate-string exc-map)))}))
(defn post-exc [^Exception e]
(post (format-exception e)))
(defn post-async [exc-map]
(send-off (agent exc-map) post))
(defn post-exc-async [^Exception e]
(post-async (format-exception e)))
(defmacro catch-exc
"Catch exception, post to Exceptional, return exception."
[& body]
`(try
~@body
(catch Exception e# (post-exc e#) e#)))
(defmacro catch-mod
[mod & body]
`(try
~@body
(catch Exception e# (do (post-async
(-> (format-exception e#)
~mod))
e#))))
(defmacro rethrow-exc
"Catch exception, post to Exceptional, re-throw."
[& body]
`(try
~@body
(catch Exception e# (do (post-exc-async e#)
(throw e#)))))
(defmacro rethrow-mod
[mod & body]
`(try
~@body
(catch Exception e# (do (post-async
(-> (format-exception e#)
~mod))
(throw e#)))))
(defn add-request [exc-map req]
(request exc-map
(session (:session req))
(remote-ip (:remote-addr req))
(params (or (:params req)
(merge (:query-params req)
(:form-params req))))
(url (:uri req))
(req-method (:request-method req))
(headers (:headers req))))
(defn wrap-exceptional-catch
"Ring middleware for posting all exceptions to Exceptional. Exceptions
are rethrown after posting. Adds request data to exceptional map."
[handler]
(fn [req]
(catch-mod
(add-request req)
(handler req))))
(defn wrap-exceptional-rethrow
"Ring middleware for posting all exceptions to Exceptional. Exceptions
are rethrown after posting. Adds request data to exceptional map."
[handler]
(fn [req]
(rethrow-mod
(add-request req)
(handler req))))
(defmacro try [& body]
(let [catch-forms (filter #(= 'catch (first %)) body)
forms (filter #(not (= 'catch (first %))) body)]
`(try
(rethrow-exc
~@forms)
~@catch-forms)))
(comment
;; Examples from README
;; Please don't spam my account.
(key! "cfaabdee74ffc4d3e7c35391b0079629091f21c9")
(post-exc (Exception. "first example"))
(post-exc-async (Exception. "second example"))
(catch-exc
(throw (Exception. "third example")))
(rethrow-exc
(throw (Exception. "fourth example")))
(catch-mod
(add-request {:remote-addr "0:0:0:0:0:0:0:1%0",
:scheme :http,
:query-params {},
:session {"key" "val"},
:form-params {},
:multipart-params {},
:request-method :get,
:query-string nil,
:content-type nil,
:cookies
{"ring-session" {:value "3862a562-7d4d-448f-92d3-59f786023fa4"},
"remember_user_token"
{:value
"BAhbB2kGSSIZdVlrUGtBY0tuLVk5TGc2UkJRMF8GOgZFVA==--68edd1936590b325f476c5519198cee28afbb336"}},
:uri "/foobar",
:server-name "localhost",
:params {:foo "bar" :baz "bap"},
:headers
{"hkey" "hval"},
:content-length nil,
:server-port 8080,
:character-encoding nil})
(throw (Exception. "fifth example"))))