(alert dont-use-it "REMINDER %state% %function% %params% %date% %hostname% %desc% %level% %os% %newline% _ %space% %result%")
(alert empty "")
(alert mail "")
(alert peroket "echo '%state% problem at %date% with %function% %params% : %result%'")
(alert sms "echo -n '%date% %function% CRITICAL on %hostname%' | curl http://somewebservice")
;(alert mail "echo -n '%date% %hostname% had problem on %function% %newline% %params% values %result% %newline%
;	              %desc%' | mail -s '[Error] %function% - %hostname%' foo@bar.com")


;; check if used percent :path partition is more than :limit
(=> peroket disk-usage   :path "/"    :limit 90)
(=> peroket disk-usage   :path "/usr" :limit 85)
(=> peroket disk-usage   :path "/tmp" :limit 0) ;; failure

;; check if :path file exists
(=> mail  check-file-exists  :path "/bsd.rd" :desc "OpenBSD kernel /bsd.rd")
(=> empty check-file-exists  :path "/non-existant-file" :try 3) ;; failure file not found

;; check if :path file exists and has been updated since :limit minutes
(=> empty file-updated :path "/var/log/messages" :limit 400)
(=> mail file-updated :path "/bsd.rd"           :limit 1 :desc "OpenBSD kernel") ;; failure
(=> mail file-updated :path "/tmp/reed-alert.txt" :limit 10)

;; check if :path pid file process is running
(=> mail pid-running  :path "/var/run/xdm.pid" :desc "XDM pid")
(=> mail pid-running  :path "/home/user/test.pid") ;; failure

;; check if number of processes on the system is more than :limit
(=> mail number-of-processes :limit 200)
(=> mail number-of-processes :limit 1) ;; failure

;; check if service is running
(=> mail service :name "httpd" :reminder 2) ;; reminds every 2 check when it's failing
(=> mail service :name "ospfd")   ;; failure : not started
(=> mail service :name "unknown") ;; failure : not known

;; check if load average on (1/5/15) minutes is more than :limit
(=> mail load-average-1  :limit 4)
;;(=> mail load-average-5  :limit 2)
;;(=> mail load-average-15 :limit 1)
(=> mail load-average-1  :limit 0.2) ;; should trigger error

;; check if :host host is reachable
;;(=> mail ping :host "8.8.8.8"      :desc "Google DNS")
;;(=> empty ping :host "127.40.30.21" :desc "Certainly not used address") ;; fail time out
(loop for host in (list "8.8.8.8" "8.8.4.4" "127.0.0.1")
   do
     (=> empty ping :host host))

;; check if :command command return 0 (success) or something else (error)
(=> empty command :command "echo hello") ;; success
(=> empty command :command "ls /non-existent-file") ;; fail

;; check if web page :url answer under :limit
(=> empty command :command "curl -m 10 http://google.fr/")

;; check if a certificate is still valid within a time range
(=> mail ssl-expiration :host "google.fr"    :seconds 1296000)
(=> mail ssl-expiration :host "freenode.net" :seconds (* 7 24 60 60))
(=> mail ssl-expiration :host "freenode.net" :seconds 1296000 :port 6697)

;; update a file modification time
(=> mail write-to-file :path "/tmp/reed-alert.txt")

;; we declare a new probe here
(create-probe
 check-http-pattern
 (command-return-code (format nil "curl ~a | grep -i ~a"
                              (getf params :url) (getf params :pattern))))

;; check if the web page :url contains the text regex :pattern
(=> empty check-http-pattern  :url "http://google.fr/" :pattern "html")
(=> empty check-http-pattern  :url "http://127.0.0.1/" :pattern "HTML")
(=> empty check-http-pattern  :url "http://google.fr/" :pattern "hello") ;; error