saw-amtraker-client
Shared Amtraker API client for the Live Track passenger-rail integrations for Home Assistant: Live Track Amtrak, Live Track VIA Rail and Live Track Brightline.
Pure Python, no Home Assistant imports. Each integration declares it in
manifest.json requirements.
Why this is a separate package
HACS permits only one integration per repository, so three integrations cannot share a folder. Vendoring the same client into three repositories is how three subtly different clients get written, so it ships as a dependency instead.
What it refuses to do, and why
Each refusal comes from a measurement against the live feed, not from caution.
| Behaviour | Reason |
|---|---|
course_deg() always returns None |
the feed's direction is an eight-value octant string; converting "SW" to 225.0 invents precision the feed never carried |
speed_kmh() returns None for Brightline, even when the field is non-zero |
measured 0.0 on every instance while trains covered 76-133 km at 44-77 mph. The field is unpopulated, not stationary |
observed_at() returns None for Brightline |
its lastValTS advances every 30 s while the position changes every 60 s. It is a feed refresh clock, not an observation time |
observed_at() returns None for Predeparture trains |
that field then carries a scheduled future departure |
| a finished train is handled by type | the API returns a bare [] list, not the documented keyed object |
HTTP 429 raises RateLimited |
a non-200 must never be recorded as "no data" |
an empty User-Agent raises at construction |
the server blocks such requests, so failing here is clearer than an empty result later |
A terminal snap - the feed resetting a finished train's position to its terminus - is detected by implied speed, not by a fixed distance. A flat distance threshold discards genuine movement: at 125 mph over the observed 180 s maximum interval a train legitimately covers 10 km.
Caching
/v3/trains takes no parameters and returns every provider, so N consumers
would otherwise make N identical system-wide requests. One client instance
serves all three providers from a single cached fetch.
Data attribution
Train data is provided by Amtraker and is licensed under the Open Data Commons Attribution License (ODC-By) v1.0.
Disclaimer
Independent project. Not affiliated with, endorsed by or connected to Amtrak, VIA Rail Canada or Brightline.
Licence
MIT.
1 maintainer
Metadata
1 maintainer
Release files for saw-livetrack 0.1.0
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Source distribution (sdist)
| File | Size | Uploaded | |
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| saw_livetrack-0.1.0.tar.gz | 20.0 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| saw_livetrack-0.1.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 34.1 kB
Release files / saw_livetrack-0.1.0.tar.gz
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