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

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

DAY_IN_SECS = 86400

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:COUNTER:120:0:U \
		DS:mbfsused: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_disk: disk.rrd
	rrdtool update $< $(NOW):$(shell sar -F MOUNT --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) \
		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) \
		DEF:ldavg-1=$<:ldavg-1:AVERAGE \
		DEF:ldavg-5=$<:ldavg-5:AVERAGE \
		DEF:ldavg-15=$<:ldavg-15:AVERAGE \
		LINE1:ldavg-1#$(INFO1):ldavg-1 \
		LINE1:ldavg-5#$(INFO2):ldavg-5 \
		LINE1:ldavg-15#$(INFO3):ldavg-15

$(BUILD_DIR)/mem-daily$(EXTENSION): mem.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(DAY_IN_SECS) \
		DEF:kbmemfree=$<:kbmemfree:AVERAGE \
		DEF:kbbuffers=$<:kbbuffers:AVERAGE \
		DEF:kbcached=$<:kbcached:AVERAGE \
		DEF:kbslab=$<:kbslab:AVERAGE \
		AREA:kbbuffers#$(DANGER1):kbbuffers:STACK \
		AREA:kbcached#$(DANGER2):kbcached:STACK \
		AREA:kbslab#$(DANGER3):kbslab:STACK \
		AREA:kbbuffers#$(DANGER4):kbbuffers:STACK \
		AREA:kbmemfree#$(SUCCESS):kbmemfree:STACK

$(BUILD_DIR)/net-daily$(EXTENSION): net.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(DAY_IN_SECS) \
		DEF:rbytes=$<:rbytes:AVERAGE \
		DEF:tbytes=$<:tbytes:AVERAGE \
		CDEF:ntbytes=tbytes,-1,* \
		AREA:rbytes#$(DANGER):rbytes \
		AREA:ntbytes#$(SUCCESS):tbytes

$(BUILD_DIR)/disk-daily$(EXTENSION): disk.rrd
	rrdtool graph $@ --imgformat $(FORMAT) --end now --start end-$(DAY_IN_SECS) \
		DEF:mbfsfree=$<:mbfsfree:AVERAGE \
		DEF:mbfsused=$<:mbfsused:AVERAGE \
		AREA:mbfsused#$(DANGER):mbfsused:STACK \
		AREA:mbfsfree#$(SUCCESS):mbfsfree:STACK

$(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) $(BUILD_DIR)/disk-daily$(EXTENSION) $(BUILD_DIR)/index.html