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improved coding standards. options parsing. verbose logging

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This commit is contained in:
Patrick Stadler 2015-03-11 22:02:00 +01:00
parent 9858beb329
commit 5c65c6646f
10 changed files with 115 additions and 39 deletions
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42
lib/main.sh
View File

@ -3,11 +3,10 @@ for util in ./lib/utils/*.sh; do source $util; done
# init
__METRICS=()
__TEMP_DIR=$(make_temp_dir)
# load reporter
main_load () {
# load reporter
source ./reporters/${REPORTER}.sh
copy_function init __r_${REPORTER}_init
copy_function report __r_${REPORTER}_report
@ -34,6 +33,14 @@ main_load () {
}
main_init () {
TEMP_DIR=$(make_temp_dir)
# register trap
trap '
main_terminate
trap - SIGTERM && kill -- -$$ SIGINT SIGTERM EXIT
' SIGINT SIGTERM EXIT
# init reporter
if is_function __r_${REPORTER}_init; then
__r_${REPORTER}_init
@ -49,19 +56,6 @@ main_init () {
done
}
main_docs () {
echo "Available metrics:"
for metric in ${__METRICS[@]}; do
if ! is_function __m_${metric}_docs; then
continue
fi
echo "[$metric]"
__m_${metric}_docs
echo
done
}
main_collect () {
# used by metrics to return results
report () {
@ -105,4 +99,22 @@ main_terminate () {
if is_function __r_${REPORTER}_terminate; then
__r_${REPORTER}_terminate
fi
# delete temporary directory
if [ ! -z $TEMP_DIR ] && [ -d $TEMP_DIR ]; then
rmdir $TEMP_DIR
fi
}
main_docs () {
echo "Available metrics:"
for metric in ${__METRICS[@]}; do
if ! is_function __m_${metric}_docs; then
continue
fi
echo "[$metric]"
__m_${metric}_docs
echo
done
}

16
lib/utils/verbose.sh Normal file
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@ -0,0 +1,16 @@
VERBOSE_MODE=false
verbose_on () {
VERBOSE_MODE=true
}
verbose_off () {
VERBOSE_MODE=true
}
verbose () {
if [ $VERBOSE_MODE = "false" ]; then
return
fi
echo "$@"
}

2
metrics/cpu.sh
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@ -1,7 +1,7 @@
#!/bin/sh
collect () {
report $(ps aux | awk '{sum+=$3} END {printf "%.1f\n", sum}' | tail -n 1)
report $(ps aux | awk '{ sum+=$3 } END { printf "%.1f\n", sum }' | tail -n 1)
}
docs () {

8
metrics/disk_io.sh
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@ -8,7 +8,7 @@ init () {
DISK_IO_MOUNTPOINT="/dev/vda"
fi
fi
readonly __disk_io_fifo=$__TEMP_DIR/disk_io
readonly __disk_io_fifo=$TEMP_DIR/disk_io
mkfifo $__disk_io_fifo
__disk_io_bgproc &
}
@ -16,7 +16,7 @@ init () {
if is_osx; then
__disk_io_bgproc () {
iostat -K -d -w $INTERVAL $DISK_IO_MOUNTPOINT | while read line; do
echo $line | awk '{print $3}' > $__disk_io_fifo
echo $line | awk '{ print $3 }' > $__disk_io_fifo
done
}
else
@ -26,11 +26,11 @@ else
fi
collect () {
report $(cat $__disk_io_fifo)
report $(cat < $__disk_io_fifo)
}
terminate () {
if [ ! -z $__disk_io_fifo ] && [ -f $__disk_io_fifo ]; then
if [ ! -z $__disk_io_fifo ] && [ -p $__disk_io_fifo ]; then
rm $__disk_io_fifo
fi
}

2
metrics/disk_usage.sh
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@ -12,7 +12,7 @@ init () {
collect () {
report $(df | awk -v disk_regexp="^$DISK_USAGE_MOUNTPOINT" \
'$0 ~ disk_regexp {printf "%.1f", $5}')
'$0 ~ disk_regexp { printf "%.1f", $5 }')
}
docs () {

9
metrics/memory.sh
View File

@ -7,13 +7,14 @@ if is_osx; then
collect () {
report $(vm_stat | awk -v total_memory=$__memory_os_memsize \
'BEGIN {FS=" *"; pages=0}
/Pages (free|inactive|speculative)/ {pages+=$2}
END {printf "%.1f", 100 - (pages * 4096) / total_memory * 100.0}')
'BEGIN { FS=" *"; pages=0 }
/Pages (free|inactive|speculative)/ { pages+=$2 }
END { printf "%.1f", 100 - (pages * 4096) / total_memory * 100.0 }')
}
else
collect () {
report $(free | awk '/buffers\/cache/{printf "%.1f", 100 - $4 / ($3 + $4) * 100.0}')
report $(free | awk '/buffers\/cache/
{ printf "%.1f", 100 - $4 / ($3 + $4) * 100.0 }')
}
fi

8
metrics/network_io.sh
View File

@ -13,19 +13,19 @@ init () {
if is_osx; then
__network_io_collect () {
netstat -bI $NETWORK_IO_INTERFACE | \
awk "/$NETWORK_IO_INTERFACE/"'{print $7" "$10; exit}'
netstat -bI $NETWORK_IO_INTERFACE |
awk "/$NETWORK_IO_INTERFACE/"'{ print $7" "$10 }'
}
else
__network_io_collect () {
cat /proc/net/dev | awk -v iface_regex="$NETWORK_IO_INTERFACE:" \
'$0 ~ iface_regex {print $2" "$10}'
'$0 ~ iface_regex { print $2" "$10 }'
}
fi
__network_io_calc_kBps() {
echo $1 $2 | awk -v divisor=$__network_io_divisor \
'{printf "%.2f", ($1 - $2) / divisor}'
'{ printf "%.2f", ($1 - $2) / divisor }'
}
collect () {

5
metrics/swap.sh
View File

@ -2,11 +2,12 @@
if is_osx; then
collect () {
report $(sysctl -n vm.swapusage | awk '{printf "%.1f", $6 / $3 * 100.0}')
report $(sysctl -n vm.swapusage |
awk '{ if ($3 == 0) exit; printf "%.1f", $6 / $3 * 100.0 }')
}
else
collect () {
report $(free | awk '/Swap/{printf "%.1f", $3/$2 * 100.0}')
report $(free | awk '/Swap/{ printf "%.1f", $3/$2 * 100.0 }')
}
fi

2
reporters/file.sh
View File

@ -4,7 +4,7 @@ report () {
local METRIC=$1
local VALUE=$2
local DATE=$(iso_date)
echo $DATE $METRIC: $VALUE >> $FILE_LOCATION
echo "$DATE $METRIC: $VALUE" >> $FILE_LOCATION
}
init () {

60
sysmetricsd.sh
View File

@ -2,16 +2,62 @@
# config
INTERVAL=1
REPORTER=file
REPORTER=stdout
# register trap
trap '
main_terminate
trap - SIGTERM && kill -- -$$ SIGINT SIGTERM EXIT
' SIGINT SIGTERM EXIT
# load and start main routine
# handle opts
opts_spec=":dvh-:"
opt_docs=false
opt_verbose=false
usage () {
echo "usage: $0 [-d] [-h]"
}
help () {
echo "TODO"
}
while getopts "$opts_spec" opt; do
case "${opt}" in
d)
opt_docs=true
;;
v)
opt_verbose=true
;;
h)
help
exit
;;
*)
usage
exit 1
;;
esac
done
shift $((OPTIND-1))
# run
source ./lib/main.sh
if [ $opt_verbose = "true" ]; then
verbose_on
verbose "Started in verbose mode"
fi
verbose "OS detected: $OS_TYPE"
main_load
verbose "Metrics loaded: ${__METRICS[@]}"
if [ "$opt_docs" = true ]; then
main_docs
exit
fi
main_init
verbose "Metrics initialized"
verbose "Collecting metrics every $INTERVAL second(s)"
main_collect