Avaya Media Processing Server Series System (Software Release 2.1) Manual de usuario descargar pdf (Pagina 209)

Common Configuration

# P0602477 Ver: 3.1.11 Page 209

Logical Conditions

Filters can use the following functions to specify logical conditions:

Function Description

intext("str") Returns a value of true if "str" is a substring of the text of the

alarm.

inText("str") Same basic rules as above, but the substring search is case

sensitive.

frequency(n,

secs)

Returns a value of

true only if at least the number of alarms

indicated by n arrive in the time span (in seconds) indicated by

secs. This function should always be used as the second part of a

conditional expression: only the alarms that satisfy the first part of

the expression are counted against the frequency. For example:

(producer == "vmm" && frequency(5, 10) ) ?

print() : discard ()

prints the current alarm after receiving the fifth vmm alarm within 10 seconds. Since the

print() action also returns true, the alarm is sent to connected viewers as well.

previous() Returns the number of seconds since the previous alarm passed

the filter. This function can be used to prevent repeating actions

caused by a flow of alarms. For instance, the filter:

(severity > 8 && frequency(10,3) && previous() > 300) ?

email("Flood of alarms", "sysadmin"): 0

sends an e-mail to address sysadmin only when 10 alarms of severity greater than eight

have arrived within three seconds and the time since the previous e-mail is greater than five

minutes (300 seconds). Without the use of this function the filter would have generated one

e-mail for each new alarm as long as they met the other criteria.

count() Returns the number of alarms which passed the filter (normally

used as part of an expression). For example:

(producer == "vmm" && (count() % 10) == 1 ) ?

print() : discard ()

prints and sends to connected viewers each 10th alarm produced by vmm.

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Avaya Media Processing Server Series System (Software Release 2.1) Manual de usuario Pagina 209