NOW = $(shell date +%s )
STEP = 60

SUCCESS = 198754
DANGER = DC3545
INFO = 0DCAF0

DANGER1 = F8D7DA
DANGER2 = F1AEB5
DANGER3 = EA868F
DANGER4 = E35D6A
DANGER5 = DC3545
DANGER6 = B02A37
DANGER7 = 842029
DANGER8 = 58151C
DANGER9 = 2C0B0E

INFO1 = 0AA2C0
INFO2 = 0DCAF0
INFO3 = 3DD5F3

IFACE ?= eth0
FS ?= /

FORMAT = SVG
EXTENSION = .$(shell echo $(FORMAT) |tr '[:upper:]' '[:lower:]')

DAY_IN_SECS   =   86400
WEEK_IN_SECS  =  604800
MONTH_IN_SECS = 2678400

BUILD_DIR = web

all:

cpu.rrd:
	rrdtool create $@ --start $$(( $(NOW) - 1 )) --step $(STEP) --no-overwrite \
		DS:user:GAUGE:120:0:100 \
		DS:nice:GAUGE:120:0:100 \
		DS:sys:GAUGE:120:0:100 \
		DS:iowait:GAUGE:120:0:100 \
		DS:steal:GAUGE:120:0:100 \
		DS:irq:GAUGE:120:0:100 \
		DS:soft:GAUGE:120:0:100 \
		DS:guest:GAUGE:120:0:100 \
		DS:gnice:GAUGE:120:0:100 \
		DS:idle:GAUGE:120:0:100 \
		RRA:LAST:0.5:1:1440 \
		RRA:AVERAGE:0.5:420:1440 \
		RRA:AVERAGE:0.5:1860:1440 \
		RRA:AVERAGE:0.5:21900:1440

update_cpu: cpu.rrd
	rrdtool update $< $(NOW):$(shell LANG=C sar -u ALL 0 -1 |tail -n1 |awk '{print $$3,$$4,$$5,$$6,$$7,$$8,$$9,$$10,$$11,$$12}' |tr ' ' ':' )

load.rrd:
	rrdtool create $@ --start $$(( $(NOW) - 1 )) --step $(STEP) --no-overwrite \
		DS:ldavg-1:GAUGE:120:0:U \
		DS:ldavg-5:GAUGE:120:0:U \
		DS:ldavg-15:GAUGE:120:0:U \
		RRA:LAST:0.5:1:1440 \
		RRA:AVERAGE:0.5:420:1440 \
		RRA:AVERAGE:0.5:1860:1440 \
		RRA:AVERAGE:0.5:21900:1440

update_load: load.rrd
	rrdtool update $< $(NOW):$(shell LANG=C sar -q LOAD 0 -1 |tail -n1 |awk '{print $$4,$$5,$$6}' |tr ' ' ':' )

mem.rrd:
	rrdtool create $@ --start $$(( $(NOW) - 1 )) --step $(STEP) --no-overwrite \
		DS:kbmemfree:GAUGE:120:0:U \
		DS:kbbuffers:GAUGE:120:0:U \
		DS:kbcached:GAUGE:120:0:U \
		DS:kbslab:GAUGE:120:0:U \
		RRA:LAST:0.5:1:1440 \
		RRA:AVERAGE:0.5:420:1440 \
		RRA:AVERAGE:0.5:1860:1440 \
		RRA:AVERAGE:0.5:21900:1440

update_mem: mem.rrd
	rrdtool update $< $(NOW):$(shell LANG=C sar -r ALL 0 -1 |tail -n1 |awk '{print $$2,$$6,$$7,$$14}' |tr ' ' ':' )

net.rrd:
	rrdtool create $@ --start $$(( $(NOW) - 1 )) --step $(STEP) --no-overwrite \
		DS:rbytes:COUNTER:120:0:U \
		DS:tbytes:COUNTER:120:0:U \
		RRA:LAST:0.5:1:1440 \
		RRA:AVERAGE:0.5:420:1440 \
		RRA:AVERAGE:0.5:1860:1440 \
		RRA:AVERAGE:0.5:21900:1440

update_net: net.rrd
	rrdtool update $< $(NOW):$(shell cat /proc/net/dev |grep $(IFACE) |awk '{print $$2,$$10}' |tr ' ' ':' )

disk.rrd:
	rrdtool create $@ --start $$(( $(NOW) - 1 )) --step $(STEP) --no-overwrite \
		DS:mbfsfree:GAUGE:120:0:U \
		DS:mbfsused:GAUGE:120:0:U \
		RRA:LAST:0.5:1:1440 \
		RRA:AVERAGE:0.5:420:1440 \
		RRA:AVERAGE:0.5:1860:1440 \
		RRA:AVERAGE:0.5:21900:1440

update_disk: disk.rrd
	rrdtool update $< $(NOW):$(shell LANG=C sar -F MOUNT --fs=$(FS) 0 -1 |tail -n 1 |awk '{print $$2,$$3}' |tr ' ' ':' )

update: update_cpu update_load update_mem update_net update_disk

run:
	while true; do make update; sleep $(STEP); done

$(BUILD_DIR)/cpu-daily$(EXTENSION): cpu.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(DAY_IN_SECS) \
		--title "Processeur" \
		--upper-limit 100 \
		DEF:user=$<:user:AVERAGE \
		DEF:nice=$<:nice:AVERAGE \
		DEF:sys=$<:sys:AVERAGE \
		DEF:iowait=$<:iowait:AVERAGE \
		DEF:steal=$<:steal:AVERAGE \
		DEF:irq=$<:irq:AVERAGE \
		DEF:soft=$<:soft:AVERAGE \
		DEF:guest=$<:guest:AVERAGE \
		DEF:gnice=$<:gnice:AVERAGE \
		DEF:idle=$<:idle:AVERAGE \
		AREA:user#$(DANGER1):user:STACK \
		AREA:nice#$(DANGER2):nice:STACK \
		AREA:sys#$(DANGER3):sys:STACK \
		AREA:iowait#$(DANGER4):iowait:STACK \
		AREA:steal#$(DANGER5):steal:STACK \
		AREA:irq#$(DANGER6):irq:STACK \
		AREA:soft#$(DANGER7):soft:STACK \
		AREA:guest#$(DANGER8):guest:STACK \
		AREA:gnice#$(DANGER9):gnice:STACK \
		AREA:idle#$(SUCCESS):idle:STACK

$(BUILD_DIR)/load-daily$(EXTENSION): load.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(DAY_IN_SECS) \
		--title "Charge système" \
		DEF:ldavg-1=$<:ldavg-1:AVERAGE \
		DEF:ldavg-5=$<:ldavg-5:AVERAGE \
		DEF:ldavg-15=$<:ldavg-15:AVERAGE \
		LINE1:ldavg-1#$(INFO1):"sur 1 minute" \
		LINE1:ldavg-5#$(INFO2):"sur 5 minutes" \
		LINE1:ldavg-15#$(INFO3):"sur 15 minutes"

$(BUILD_DIR)/mem-daily$(EXTENSION): mem.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(DAY_IN_SECS) \
		--title "Mémoire" \
		DEF:kbmemfree=$<:kbmemfree:AVERAGE \
		CDEF:memfree=kbmemfree,1024,* \
		DEF:kbbuffers=$<:kbbuffers:AVERAGE \
		CDEF:buffers=kbbuffers,1024,* \
		DEF:kbcached=$<:kbcached:AVERAGE \
		CDEF:cached=kbcached,1024,* \
		DEF:kbslab=$<:kbslab:AVERAGE \
		CDEF:slab=kbslab,1024,* \
		AREA:buffers#$(DANGER1):"buffers":STACK \
		AREA:cached#$(DANGER2):"cached":STACK \
		AREA:slab#$(DANGER3):"slab":STACK \
		AREA:memfree#$(SUCCESS):"libre":STACK

$(BUILD_DIR)/net-daily$(EXTENSION): net.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(DAY_IN_SECS) \
		--title "Réseau (jour)" \
		DEF:rbytes=$<:rbytes:AVERAGE \
		CDEF:rbytesps=rbytes,60,/ \
		VDEF:rbytespsmax=rbytesps,MAXIMUM \
		DEF:tbytes=$<:tbytes:AVERAGE \
		CDEF:tbytesps=tbytes,60,/ \
		VDEF:tbytespsmax=tbytesps,MAXIMUM \
		CDEF:ntbytes=tbytes,-1,* \
		HRULE:0#$(INFO) \
		AREA:rbytes#$(DANGER):"reçu" \
		COMMENT:"maximum " \
		GPRINT:rbytespsmax:"%6.2lf %So/s" \
		AREA:ntbytes#$(SUCCESS):"envoyé" \
		COMMENT:"maximum " \
		GPRINT:tbytespsmax:"%6.2lf %So/s"

$(BUILD_DIR)/net-weekly$(EXTENSION): net.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(WEEK_IN_SECS) \
		--title "Réseau (semaine)" \
		DEF:rbytes=$<:rbytes:AVERAGE \
		CDEF:rbytesps=rbytes,60,/ \
		VDEF:rbytespsmax=rbytesps,MAXIMUM \
		DEF:tbytes=$<:tbytes:AVERAGE \
		CDEF:tbytesps=tbytes,60,/ \
		VDEF:tbytespsmax=tbytesps,MAXIMUM \
		CDEF:ntbytes=tbytes,-1,* \
		HRULE:0#$(INFO) \
		AREA:rbytes#$(DANGER):"reçu" \
		COMMENT:"maximum " \
		GPRINT:rbytespsmax:"%6.2lf %So/s" \
		AREA:ntbytes#$(SUCCESS):"envoyé" \
		COMMENT:"maximum " \
		GPRINT:tbytespsmax:"%6.2lf %So/s"

$(BUILD_DIR)/net-monthly$(EXTENSION): net.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(MONTH_IN_SECS) \
		--title "Réseau (mois)" \
		DEF:rbytes=$<:rbytes:AVERAGE \
		CDEF:rbytesps=rbytes,60,/ \
		VDEF:rbytespsmax=rbytesps,MAXIMUM \
		DEF:tbytes=$<:tbytes:AVERAGE \
		CDEF:tbytesps=tbytes,60,/ \
		VDEF:tbytespsmax=tbytesps,MAXIMUM \
		CDEF:ntbytes=tbytes,-1,* \
		HRULE:0#$(INFO) \
		AREA:rbytes#$(DANGER):"reçu" \
		COMMENT:"maximum " \
		GPRINT:rbytespsmax:"%6.2lf %So/s" \
		AREA:ntbytes#$(SUCCESS):"envoyé" \
		COMMENT:"maximum " \
		GPRINT:tbytespsmax:"%6.2lf %So/s"

$(BUILD_DIR)/disk-daily$(EXTENSION): disk.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(DAY_IN_SECS) \
		--title "Disque (jour)" \
		--lower-limit 0 \
		DEF:mbfsfree=$<:mbfsfree:AVERAGE \
		CDEF:bfsfree=mbfsfree,1024,*,1024,* \
		VDEF:avgbfsfree=bfsfree,AVERAGE \
		DEF:mbfsused=$<:mbfsused:AVERAGE \
		CDEF:bfsused=mbfsused,1024,*,1024,* \
		CDEF:pfsused1=bfsused,100,*,bfsused,bfsfree,+,/ \
		VDEF:pfsused2=pfsused1,AVERAGE \
		AREA:bfsused#$(DANGER):"utilisé":STACK \
		GPRINT:pfsused2:"%3.2lf %%" \
		AREA:bfsfree#$(SUCCESS):"libre":STACK \
		GPRINT:avgbfsfree:"%4.0lf %So"

$(BUILD_DIR)/disk-weekly$(EXTENSION): disk.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(WEEK_IN_SECS) \
		--title "Disque (semaine)" \
		--lower-limit 0 \
		DEF:mbfsfree=$<:mbfsfree:AVERAGE \
		CDEF:bfsfree=mbfsfree,1024,*,1024,* \
		VDEF:avgbfsfree=bfsfree,AVERAGE \
		DEF:mbfsused=$<:mbfsused:AVERAGE \
		CDEF:bfsused=mbfsused,1024,*,1024,* \
		CDEF:pfsused1=bfsused,100,*,bfsused,bfsfree,+,/ \
		VDEF:pfsused2=pfsused1,AVERAGE \
		AREA:bfsused#$(DANGER):"utilisé":STACK \
		GPRINT:pfsused2:"%3.2lf %%" \
		AREA:bfsfree#$(SUCCESS):"libre":STACK \
		GPRINT:avgbfsfree:"%4.0lf %So"

$(BUILD_DIR)/disk-monthly$(EXTENSION): disk.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(MONTH_IN_SECS) \
		--title "Disque (mois)" \
		--lower-limit 0 \
		DEF:mbfsfree=$<:mbfsfree:AVERAGE \
		CDEF:bfsfree=mbfsfree,1024,*,1024,* \
		VDEF:avgbfsfree=bfsfree,AVERAGE \
		DEF:mbfsused=$<:mbfsused:AVERAGE \
		CDEF:bfsused=mbfsused,1024,*,1024,* \
		CDEF:pfsused1=bfsused,100,*,bfsused,bfsfree,+,/ \
		VDEF:pfsused2=pfsused1,AVERAGE \
		AREA:bfsused#$(DANGER):"utilisé":STACK \
		GPRINT:pfsused2:"%3.2lf %%" \
		AREA:bfsfree#$(SUCCESS):"libre":STACK \
		GPRINT:avgbfsfree:"%4.0lf %So"



.PHONY: $(BUILD_DIR)/index.html

$(BUILD_DIR)/index.html: index.php
	php $< >$@

# $(BUILD_DIR)/%.html: %.php
#	php $< >$@

graph: $(BUILD_DIR)/cpu-daily$(EXTENSION) $(BUILD_DIR)/load-daily$(EXTENSION) $(BUILD_DIR)/mem-daily$(EXTENSION) $(BUILD_DIR)/net-daily$(EXTENSION) $(BUILD_DIR)/net-weekly$(EXTENSION) $(BUILD_DIR)/net-monthly$(EXTENSION) $(BUILD_DIR)/disk-daily$(EXTENSION) $(BUILD_DIR)/disk-weekly$(EXTENSION) $(BUILD_DIR)/disk-monthly$(EXTENSION) $(BUILD_DIR)/index.html