trace.json and history_x.json not being created

[adam-ahern]

Hardware Info

• Raspberry Pi 3B+ 1GB
• 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T

Software Info

readsb version

readsb version: 3.14.1595 wiedehopf git: a25f8ea (committed: Fri Nov 11 18:19:32 2022 0100)

Program options

cat /etc/default/readsb
# readsb configuration
# This is sourced by /etc/systemd/system/default.target.wants/readsb.service as
# daemon startup configuration.

RECEIVER_OPTIONS="--device 0 --device-type rtlsdr --gain -10 --ppm 0"
DECODER_OPTIONS="--lat xxx --lon yyy --max-range 450 --write-json-every 1"
NET_OPTIONS="--net --net-heartbeat 60 --net-ro-size 1250 --net-ro-interval 0.05 --net-ri-port 30001 --net-ro-port 30002 --net-sbs-port 30003 --net-bi-port 30004,30104 --net-bo-port 30005"
JSON_OPTIONS="--json-location-accuracy 2 --range-outline-hours 24 --json-trace-interval 1"
OTHER_OPTIONS="--heatmap-dir /run/readsb --heatmap 5 --write-state /run/readsb --write-globe-history /run/readsb"

I installed readsb using the scripted method outlined in the README. fr24feed is reading from the beast output.

Problem

trace.json and history.json are not being written to the /run/readsb directory. History files are being written to /run/tar1090/.

pi@raspberrypi:~ $ ls -l /run/readsb/
total 40
drwxr-xr-x 3 readsb nogroup   60 Dec  4 18:01 2022
-rw-r--r-- 1 readsb nogroup  276 Dec  4 18:44 aircraft.binCraft.zst
-rw-r--r-- 1 readsb nogroup 1611 Dec  4 18:44 aircraft.json
drwxr-xr-x 2 readsb nogroup 3720 Dec  4 18:44 internal_state
-rw-r--r-- 1 readsb nogroup 5803 Dec  4 18:44 outline.json
-rw-r--r-- 1 readsb nogroup  251 Dec  4 18:01 receiver.json
-rw-r--r-- 1 readsb nogroup 5877 Dec  4 18:44 stats.json
-rw-r--r-- 1 readsb nogroup 3128 Dec  4 18:44 stats.prom
-rw-r--r-- 1 readsb nogroup  336 Dec  4 18:44 status.json
-rw-r--r-- 1 readsb nogroup  496 Dec  4 18:44 status.prom

pi@raspberrypi:~ $ ls -l /run/tar1090/
...
-rw-r--r-- 1 tar1090 nogroup  298 Dec  4 18:43 history_1670179396928.json
-rw-r--r-- 1 tar1090 nogroup  298 Dec  4 18:43 history_1670179404939.json
...

Am I missing a configuration option or doing something otherwise incorrect to not be getting these files?

[wiedehopf]

why are you expecting the same things in /run/tar1090 and /run/readsb ?

For traces see: https://github.com/wiedehopf/tar1090#0800-destroy-sd-card

[gvanem]

Can I butt in here (instead of opening another issue). I'm trying to understand how this /?pTacks/ URL gets handled by the
readsb program since I want to handle such a request myself.

AFAICS, this tracks-feature depends on a lot of:

• traces/XX/trace_recent_YYYYYY.json
• traces/XX/trace_full_YYYYYY.json

files written by generateTraceJson(). Possibly gzip/zstd compressed, right?
But what's the relation and use of a trace_recent_YYYYYY.json and trace_full_YYYYYY.json?
The html/script.js is hard to follow since I do not know much JavaScript.

[wiedehopf]

No, pTracks (and the 45 min history on non globe-index installs) uses the data produced by tar1090.sh in that repo.
It basically builds its own history using aircraft.json and archiving a reduced data set.
This is the origin of my tar1090 webinterface.

At some point i'd like to move that generation of data to readsb but it's not been a priority as it works perfectly fine.

[gvanem]

No, pTracks (and the 45 min history on non globe-index installs) uses the data produced by tar1090.sh in that repo.

OK, thanks.