1

我在我的项目中使用 Riemann 来触发电子邮件警报。是否可以仅在特定日期触发电子邮件警报，例如（周一至周五@凌晨 3 点至晚上 8 点）。

如果是这样，任何人都可以帮助我参考。

我更新的代码：

(tcp-server {:host "127.0.0.1" :port 5555})

(let [userindex1 (default :ttl 300 (update-index (index)))])  
  (let [email (mailer {....email configuration})]
            (streams
        (where (service "log")
            (smap
              (fn [events]
               (let [count-of-transaction (count (filter #(= "error" (:type %)) events))]
                  (event
                  {
                     :status "Failure"
                     :metric  count-of-failures 
                     :total-fail (< count-of-failures 2)})))

              (where (let [now (clj-time.core/now)]
                    (and (<= 3 (clj-time.core/hour now) 20)
                         (<= 1 (clj-time.core/day-of-week now) 5)
                         (= (:status event) "Failure")
                         (:total-fail event)))
                (rollup 1 200
                (email "xxx@xx.com")
                 ))prn))))
4

1 回答 1

0

是的！您可以将所需的任何代码放入where子句的条件位置这里是一个示例配置，它取决于一天中的时间和一周中的一天来决定何时发送“警报”：

; -*- mode: clojure; -*-
>; vim: filetype=clojure

(riemann.repl/start-server! {:port 5557 :host "0.0.0.0"}) ;; this is only safe in a docker container


; Listen on the local interface over TCP (5555), UDP (5555), and websockets
; (5556)
(let [host "0.0.0.0"]
  (tcp-server {:host host})
  (ws-server  {:host host}))

; Expire old events from the index every 5 seconds.
(periodically-expire 5)

(require '[clj-time [core :refer [now hour day-of-week]]])

(let [index (tap :index (index))]
  (streams
   (where (service "log")
          (fixed-event-window 3
                             (smap
                              (fn [events]
                                (let [count-of-failures (count (filter #(= "error" (:type %)) events))
                                      new-event (assoc (first events)
                                                       :status "Failure"
                                                       :metric  count-of-failures
                                                       :ttl 300
                                                       :total-fail (> count-of-failures 2))]                                      
                                  new-event))
                              (where (fn [event]
                                       (let [now (clj-time.core/now)]
                                         (and (<= 0 (clj-time.core/hour now) 17)
                                              (<= 2 (clj-time.core/day-of-week now) 6)
                                              (= (:status event) "Failure")
                                              (:total-fail event))))
                                     (throttle 1 200
                                               #(println "emailing about" %)
                                               index)))))))

(tests
  (deftest index-test
    (let [workday (clj-time.format/parse "2142-01-01T00:00:00.000Z")
          weekend (clj-time.format/parse "2142-01-03T00:00:00.000Z")]
      (let [index-after-events (with-redefs [clj-time.core/now (constantly workday)]
                                 (inject! [{:service "log"
                                            :type    "error"
                                            :time    42}
                                           {:service "log"
                                            :type    "error"
                                            :time    43}
                                           {:service "log"
                                            :type    "error"
                                            :time    44}]))]
        (is (= index-after-events
               {:index [{:service "log", :type "error", :time 42, :status "Failure", :metric 3, :ttl 300, :total-fail true}]})))
      (let [index-after-events (with-redefs [clj-time.core/now (constantly weekend)]
                                 (inject! [{:service "log"
                                            :type    "error"
                                            :time    42}
                                           {:service "log"
                                            :type    "error"
                                            :time    43}
                                           {:service "log"
                                            :type    "error"
                                            :time    44}]))]
        (is (= index-after-events
               {:index []}))))))

并运行测试：

root@176ee53d0c62:/test# riemann test sample.config
INFO [2016-10-03 22:07:39,805] main - riemann.bin - Loading /test/sample.config
INFO [2016-10-03 22:07:39,840] main - riemann.repl - REPL server {:port 5557, :host 0.0.0.0} online

Testing riemann.config-test
emailing about {:service log, :type error, :time 42, :status Failure, :metric 3, :ttl 300, :total-fail true}

Ran 1 tests containing 2 assertions.
0 failures, 0 errors.

在这个例子中我使用fixed-event-window了因为我不知道如何在黎曼的单元测试中使固定时间窗口工作。我认为花费了足够长的时间来弄清楚我认为您会对迄今为止的解决方案感兴趣。如果您将其更改为固定时间窗口，它将以相同的方式工作，但测试不会运行。

于 2016-08-18T20:30:22.960 回答