add api endpoint /stats

[milahu]

useful for monitoring the network load of rqbit

expected result: something like

{
  "uploaded_bytes": 62134134,
  "downloaded_bytes": 345124,
  "download_speed": {
    "mbps": 1.23,
    "human_readable": "1.23 MiB/s"
  },
  "upload_speed": {
    "mbps": 5.32,
    "human_readable": "5.32 MiB/s"
  },
  "num_torrents": 123
  "uptime": 12345
}

currently im using a bash script to get these total numbers
which takes 25 seconds for 200 torrents

rqbit-list.sh

#!/usr/bin/env bash

rqbit_url=http://localhost:3030

#btih="$1"
id="$1"

# curl http://localhost:3030/torrents  | jq -r '.torrents[] | .id' | sort -n

total_upspeed="0"
#total_upspeed2="0"
total_uptraffic="0"

total_downspeed="0"
total_downtraffic="0"

while read torrent_id torrent_hash; do

  #if [ -n "$btih" ] && [ "$btih" != "$torrent_hash" ]; then
  if [ -n "$id" ] && [ "$id" != "$torrent_id" ]; then
    continue
  fi

  torrent_data=$(curl -s $rqbit_url/torrents/$torrent_id)

  torrent_name=$(echo "$torrent_data" | jq -r .name)

  # debug broken unicode in title
  # https://github.com/ikatson/rqbit/issues/137
  if echo "$torrent_name" | grep -E -q "^<[0-9]+ bytes>$"; then
    torrent_name+=" btih = $torrent_hash"
  fi

  if true; then

    torrent_stats=$(curl -s $rqbit_url/torrents/$torrent_id/stats)

    torrent_state=$(echo "$torrent_stats" | jq -r .time_remaining) # null if done

    upload_speed=$(echo "$torrent_stats" | jq -r .upload_speed.human_readable | tr -d ' ')

    upload_size=$(echo "$torrent_stats" | jq -r .snapshot.uploaded_bytes | numfmt --to=iec-i --suffix=B)

    download_speed=$(echo "$torrent_stats" | jq -r .download_speed.human_readable | tr -d ' ')

    download_size=$(echo "$torrent_stats" | jq -r .snapshot.fetched_bytes | numfmt --to=iec-i --suffix=B)

    # speed is in MiB/s
    total_upspeed+=+$(echo "$torrent_stats" | jq -r .upload_speed.mbps)
    #total_upspeed2+=+$(echo "${upload_speed:0: -3}" | numfmt --from=iec-i) # remove "B/s" suffix

    total_uptraffic+=+$(echo "$torrent_stats" | jq -r .snapshot.uploaded_bytes)

    total_downspeed+=+$(echo "$torrent_stats" | jq -r .download_speed.mbps)

    total_downtraffic+=+$(echo "$torrent_stats" | jq -r .snapshot.fetched_bytes)

    printf "%4s %6s %10s %6s %10s %s\n" "$torrent_id" "$upload_size" "$upload_speed" "$download_size" "$download_speed" "$torrent_name"

    continue

  else

    # verbose -> slow
    torrent_stats=$(curl -s $rqbit_url/torrents/$torrent_id/stats/v1)

    torrent_state=$(echo "$torrent_stats" | jq -r .state | head -c5)

    upload_speed=$(echo "$torrent_stats" | jq -r .live.upload_speed.human_readable | tr -d ' ')

    upload_size=$(echo "$torrent_stats" | jq -r .uploaded_bytes | numfmt --to=iec-i --suffix=B)

    download_size=$(echo "$torrent_stats" | jq -r .downloaded_bytes | numfmt --to=iec-i --suffix=B)

    # speed is in MiB/s
    total_upspeed+=+$(echo "$torrent_stats" | jq -r .live.upload_speed.mbps)
    #total_upspeed2+=+$(echo "${upload_speed:0: -3}" | numfmt --from=iec-i) # remove "B/s" suffix

    total_uptraffic+=+$(echo "$torrent_stats" | jq -r .uploaded_bytes)

    total_downspeed+=+$(echo "$torrent_stats" | jq -r .live.download_speed.mbps)

    total_downtraffic+=+$(echo "$torrent_stats" | jq -r .fetched_bytes) # ?

    printf "%4s %5s %6s %10s %s\n" "$torrent_id" "$torrent_state" "$upload_size" "$upload_upspeed" "$torrent_name"

  fi

done < <(
  curl -s $rqbit_url/torrents |
  jq -r '.torrents[] | "\(.id) \(.info_hash)"' | sort -n
  #jq -r '.torrents[] | .id' | sort -n
)

# print summary to stderr -> dont sort the summary

total_upspeed=$(echo "$total_upspeed" | bc | xargs printf "%.2f")MiB/s
#echo "total upspeed: $total_upspeed" >&2

#total_upspeed2=$(echo "$total_upspeed2" | bc | numfmt --to=iec-i)B/s
#echo "total upspeed 2: $total_upspeed2"

total_uptraffic=$(echo "$total_uptraffic" | bc | numfmt --to=iec-i --format=%.6f)B
#echo "total uptraffic: $total_uptraffic" >&2

total_downspeed=$(echo "$total_downspeed" | bc | xargs printf "%.2f")MiB/s
total_downtraffic=$(echo "$total_downtraffic" | bc | numfmt --to=iec-i --format=%.6f)B

echo "total up $total_uptraffic $total_upspeed down $total_downtraffic $total_downspeed" >&2

[ikatson]

@milahu looks like you're really stress testing it!

Curious about your use-case and what are the findings so far besides the issues you've filed?

[milahu]

200 torrents, im just getting started ; )
this is a 1TB seedbox at feralhosting.com
so 1K to 10K torrents should be doable

i tried rtorrent, qbittorrent-nox, transmission
and so far, rqbit seems to give the best performance
no benchmarks yet, just a vague impression

qbittorrent seems to use more ram (default config)

rtorrent is unstable, but its an old version
also i dont like the "ncurses first" interface of rtorrent
i prefer a headless daemon

the guis are mostly useless for my case
i just need an api to add torrents, monitor errors, monitor speed

[ikatson]

Done in #204