Unable to use feed from serial port (ttyS0)

[yanniedog]

Hi Mikey,

I get this error when trying to use the ttyS0 serial port for AIS data:

pi@SmoothIsland:~ $ sudo docker run --rm -i -t -p 8888:8000 -e DATA_SOURCES=ais-serial://dev/ttyS0?baud=38400 mik3y/airdash yarn run v1.22.5 $ WEBPACK_TARGET=prod node server/server.js info: Server starting ... info: config: {"listenPort":8000} info: Starting server ... Error: Failed to add data source ais-serial://dev/ttyS0?baud=38400: Error: Unsupported protocol "ais-serial:"

[mik3y]

Hey @yanniedog! Okay, this will probably take us a few iterations, but I think we can get this solved.

Your command looks right, the issue here is the docker image has not been updated. I'm checking why, and it looks like this is because the automatic build failed - so there's no fresher one for you. Let me see if I can get this fixed, it may take about 20-30 minutes. Stand by!

[mik3y]

@yanniedog okay, please try updating the docker image, and running again.

You can update the image with this command:

docker pull mik3y/airdash

[yanniedog]

@mik3y thanks very much. Please see below:

`pi@SmoothIsland:~ $ sudo docker pull mik3y/airdash
Using default tag: latest
latest: Pulling from mik3y/airdash
709549ab8c59: Pull complete
a47835026e1d: Pull complete
d9aa96a1a673: Pull complete
c4e19bdda1d2: Pull complete
2b538cd0b24d: Pull complete
91d489fd59ac: Pull complete
69a4687b2da3: Pull complete
efe643b6c2af: Pull complete
455c1917998f: Pull complete
ea3dd698273e: Pull complete
4beb7b46e67a: Pull complete
82b9e5bf9da0: Pull complete
ea994a47fa33: Pull complete
8beec020d5ba: Pull complete
Digest: sha256:da99cafac0bd2f4653245d24e7d5c9eb564ae79694dc5769abbfb973f426b021
Status: Downloaded newer image for mik3y/airdash:latest
docker.io/mik3y/airdash:latest

pi@SmoothIsland:~ $ sudo docker run --rm -i -t -p 8888:8000 -e DATA_SOURCES=ais-serial:///dev/ttyS0 mik3y/airdash

docker: Error response from daemon: driver failed programming external connectivity on endpoint confident_shamir (5adc13f4ab768d588946c5aef3df50b89abf186ec36d722e20f86f82e413ab9f): Bind for 0.0.0.0:8888 failed: port is already allocated.
`

As an alternative (with the baud specified):
pi@SmoothIsland:~ $ sudo docker run --rm -i -t -p 8888:8000 -e DATA_SOURCES=ais-serial:///dev/ttyS0?baud=38400 mik3y/airdash docker: Error response from daemon: driver failed programming external connectivity on endpoint unruffled_villani (1a096d9d3ae2c67d952b0219132e0a06562576142cb445bf1d05649ea41a541b): Bind for 0.0.0.0:8888 failed: port is already allocated.

[mik3y]

Hm! That error suggests you might already have it (or something) running on port 8888.

Try a docker ps to see what's running. You should then be able to use docker stop or docker kill to shut down an existing version of airdash, if one is running.

[yanniedog]

Thanks mik3y, that fixed it.
Now, Docker loads correctly, but unfortunately it still doesn't show ships on the map:

pi@SmoothIsland:~ $ sudo docker ps
CONTAINER ID   IMAGE          COMMAND                  CREATED        STATUS        PORTS                    NAMES
98ed63ea25c2   7819a6390adf   "docker-entrypoint.s…"   10 hours ago   Up 10 hours   0.0.0.0:8888->8000/tcp   awesome_payne

pi@SmoothIsland:~ $ sudo docker stop 98ed63ea25c2
98ed63ea25c2

pi@SmoothIsland:~ $ sudo docker run --rm -i -t -p 8888:8000 -e DATA_SOURCES=ais-serial:///dev/ttyS0 mik3y/airdash
yarn run v1.22.5
$ WEBPACK_TARGET=prod node server/server.js
info: Server starting ...
info: config: {"listenPort":8000}
info: Starting server ...
info: 200 | GET /api/entities duration=99 for=undefined agent=Mozilla/5.0 (X11; Linux armv7l) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.197 Safari/537.36
info: 200 | GET /api/entities duration=4 for=undefined agent=Mozilla/5.0 (X11; Linux armv7l) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.197 Safari/537.36
info: 200 | GET /api/entities duration=4 for=undefined agent=Mozilla/5.0 (X11; Linux armv7l) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.197 Safari/537.36

[mik3y]

Whoops! Sorry I missed your comment here.

Could you try enabling debug logs? I am not sure if it will add what we need.. but it could.

Should be something like adding the following to the docker run command:

-e DEBUG='airdash:*'

[mik3y]

Hey @yanniedog - I thought of another issue that could be affecting this. Do you run some other software that reads from the AIS device at port /dev/ttyS0? I believe only one program can read from that at a time, so if something other than airdash is running, that could be the problem.

[yanniedog]

The issue I'm really, really struggling with is the basic Docker / Docker-compose commands. I don't know how to do the fundamental basics of Docker, and don't have any idea what I'm doing when it comes to docker/docker-compose. It's preventing me from participating

[mik3y]

Understood! Sorry about that - I remember there is indeed a bit of a learning curve. And probably doubly so when you aren't sure whether the software itself is buggy (as could definitely be the case here)..

Would you be up for letting me ssh in and look things over? I can probably troubleshoot things quickly that way. No worries if not - I understand not wanting to trust a random internet stranger with computer access :-)