Script Library: 1176 scripts
 

rrd.r

REBOL [ Title: "RRD" Date: 20-Jul-2008 Name: 'RRD Version: 1.0.0 File: %rrd.r Author: "Roger McIlmoyle" Purpose: { Create, Manager, and Use simplified RRD DB } Usage: { Internal list of functions: make-rrd-array : create series that holds intervals and data update-rrd: update / insert values into an rrd db get-rrd-value: retrieve values from the rrd db for an interval dump-rrd: debugging function to display the data in the rrd db } History: { 1.0.0 first version, lots to add built for an instrumentation package I'm working on that can be deployed to test links for connectivity, capacity, and jitter } ] row: make object! [ cnt: make integer! 0 max: make decimal! 0.0 min: make decimal! 0.0 avg: make decimal! 0.0 last: make decimal! 0.0 ] make-rrd-array: func [ "Build a simple rrd table with a specified number of table entries each with a specific interval in seconds. The rrd table never grows in size. As entries are updated it rolls forward to always retain the same overall interval size" start [date!] "Start date/time of data" steps [integer!] "how many nodes" resolution [integer!] "how many seconds represents the interval per node" ][ rrd: [] node: start loop steps [ append rrd node ; Date Index append rrd make row [] ; object containing values node/time: node/time + resolution ] head rrd ] in-interval: func [ "Test to see if the time is within the interval" node1 [date!] "Interval start time" node2 [date!] "date / time to test" interval [integer!] "Size of interval in seconds" ][ node3: node1 node3/time: node3/time + interval either all [ node1 < node2 node3 > node2 ] [ true ][ false ] ] get-rrd-range: func [ "Return a series that has two values starting and ending " rrd [series!] "RRD DB to use" /last "Last actual node rather than the implied end" ][ start: first head rrd end: first skip rrd length? rrd -2 either last [ [ start end ] ][ ;Determine the interval start2: second head rrd interval: to-integer start2/time - start/time end/time: end/time + interval - 1 [ start end ] ] ] get-rrd-value: func [ "Return a specified value from the RRD" data-time [date!] "Desired time" rrd [series!] "RRD Series to use" /max "Return Maximum" /min "Return Minimum" /avg "Return Average" /last "Return Last" /cnt "Return Coung" ][ value: 0 rrd: head rrd interval1: first rrd interval2: third rrd interval: to-integer interval2/time - interval1/time while [ all [ data-time >= interval1 not tail? rrd] ][ node: first rrd data: second rrd if in-interval node data-time interval [ either any [ max min avg cnt ][ if max [ value: data/max ] if min [ value: data/min ] if avg [ value: data/avg ] if cnt [ value: data/cnt ] ][ value: data/last ] break ] rrd: skip rrd 2 ] value ] dump-rrd: func [ "Display supplied RRD DB" rrd [series!] ;"RRD DB to display" ][ foreach node rrd [ either date? node [ node-date: node ][ print [ node-date node/cnt node/min node/max node/avg node/last ] ] ] ] update-rrd: func [ "Insert/Update a statistic within the RRD" data-time [date!] "Exact time value was collected" value [decimal!] "Value collect" rrd [series!] "RRD Series" ][ return: False rrd: head rrd trim: 0 node: first rrd nextnode: third rrd interval: to-integer nextnode/time - node/time while [ all [ data-time >= node not tail? rrd] ][ node: first rrd if in-interval node data-time interval [ ;Within this interval rrd-data: second rrd rrd-data/cnt: rrd-data/cnt + 1 rrd-data/last: value either lesser-or-equal? rrd-data/cnt 1 [ rrd-data/max: value rrd-data/min: value rrd-data/avg: value ][ if greater? value rrd-data/max [ rrd-data/max: value ] if greater? rrd-data/min value [ rrd-data/min: value ] rrd-data/avg: rrd-data/avg + (( value - rrd-data/avg ) / rrd-data/cnt) ] return: True break ] if tail? skip rrd 2 [ next-interval: first rrd next-interval/time: next-interval/time + interval append rrd next-interval append rrd make row [cnt: 0 min: 0 max: 0 last: 0 avg: 0] next-interval/time: next-interval/time + interval append rrd next-interval append rrd make row [cnt: 0 min: 0 max: 0 last: 0 avg: 0] trim: trim + 1 ] rrd: skip rrd 2 ] rrd: head rrd if trim > 0 [ remove/part rrd ( trim * 2 ) ] return ]
halt ;; to terminate script if DO'ne from webpage
<< rpps.r · rse-ids.r >>