#!/bin/sh
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. /usr/share/libubox/jshn.sh
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HOSTNAME="${COLLECTD_HOSTNAME:-localhost}"
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INTERVAL="${COLLECTD_INTERVAL:-60.000}"
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handle_cake() {
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local ifc ifr tin i
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ifc="$1"
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ifr="${ifc//[!0-9A-Za-z]/_}"
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# Overall
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json_get_vars bytes packets drops backlog qlen
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# Options
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json_select options
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json_get_vars bandwidth diffserv
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json_select ".."
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echo "PUTVAL \"$HOSTNAME/sqm-$ifc/qdisc_bytes\" interval=$INTERVAL N:$bytes"
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echo "PUTVAL \"$HOSTNAME/sqm-$ifc/qdisc_drops\" interval=$INTERVAL N:$drops"
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echo "PUTVAL \"$HOSTNAME/sqm-$ifc/qdisc_backlog\" interval=$INTERVAL N:$backlog"
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# ash doesn't have arrays so prepare to get a little creative
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case "$diffserv" in
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diffserv3 | diffserv4) tns="BKBEVIVO"
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;;
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*) tns="T0T1T2T3T4T5T6T7"
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;;
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esac
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# Tins
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# Flows & delays indicate the state as of the last packet that flowed through, so they appear to get stuck.
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# Discard the results from a stuck tin.
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json_get_keys tins tins
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json_select tins
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i=0
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for tin in $tins; do
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json_select "$tin"
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json_get_vars threshold_rate sent_bytes sent_packets backlog_bytes target_us peak_delay_us avg_delay_us base_delay_us drops ecn_mark ack_drops sparse_flows bulk_flows unresponsive_flows
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eval osp="\$osp${ifr}t${i}"
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if [ "$osp" ] && [ "$osp" -eq "$sent_packets" ] ; then
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peak_delay_us=0; avg_delay_us=0; base_delay_us=0
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sparse_flows=0; bulk_flows=0; unresponsive_flows=0
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else
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eval "osp${ifr}t${i}=$sent_packets"
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fi
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tn=${tns:$((i<<1)):2}
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echo "PUTVAL \"$HOSTNAME/sqmcake-$ifc/qdisct_bytes-$tn\" interval=$INTERVAL N:$sent_bytes"
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echo "PUTVAL \"$HOSTNAME/sqmcake-$ifc/qdisct_thres-$tn\" interval=$INTERVAL N:$threshold_rate"
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echo "PUTVAL \"$HOSTNAME/sqmcake-$ifc/qdisct_drops-$tn\" interval=$INTERVAL N:$drops:$ecn_mark:$ack_drops"
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echo "PUTVAL \"$HOSTNAME/sqmcake-$ifc/qdisct_backlog-$tn\" interval=$INTERVAL N:$backlog_bytes"
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echo "PUTVAL \"$HOSTNAME/sqmcake-$ifc/qdisct_flows-$tn\" interval=$INTERVAL N:$sparse_flows:$bulk_flows:$unresponsive_flows"
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echo "PUTVAL \"$HOSTNAME/sqmcake-$ifc/qdisct_latencyus-$tn\" interval=$INTERVAL N:$target_us:$peak_delay_us:$avg_delay_us:$base_delay_us"
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json_select ..
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i=$((i+1))
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done
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json_select ..
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}
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handle_mq() {
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ifc="$1"
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# Overall
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json_get_vars bytes drops backlog
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echo "PUTVAL \"$HOSTNAME/sqm-$ifc/qdisc_bytes\" interval=$INTERVAL N:$bytes"
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echo "PUTVAL \"$HOSTNAME/sqm-$ifc/qdisc_drops\" interval=$INTERVAL N:$drops"
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echo "PUTVAL \"$HOSTNAME/sqm-$ifc/qdisc_backlog\" interval=$INTERVAL N:$backlog"
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}
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process_qdisc() {
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local ifc jsn
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ifc="$1"
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jsn=$(tc -s -j qdisc show dev "$ifc")
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# strip leading & trailing []
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jsn="${jsn#[}" ; jsn="${jsn%]}"
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json_load "${jsn}"
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json_get_var qdisc kind
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case "$qdisc" in
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cake) handle_cake "$ifc"
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;;
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mq) handle_mq "$ifc"
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;;
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*) echo "Unknown qdisc type" 1>&2
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;;
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esac
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json_cleanup
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}
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while true ; do
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for ifc in "$@" ; do
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process_qdisc "$ifc"
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done
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sleep "${INTERVAL%.000}"
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done
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