maps.chandlerswift.com/layers/dot-cams/md/get_data.py

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2024-02-03 03:30:10 -06:00
#!/usr/bin/python3
import requests
import json
cameras = []
res = requests.get("https://chartexp1.sha.maryland.gov/CHARTExportClientService/getCameraMapDataJSON.do")
res.raise_for_status()
# {
# "error": null,
# "data": [
# {
# "description": "I-270 & Old Hundred Rd (MD 109)(CAM 165)",
# "lat": 39.2773,
# "lon": -77.3236,
# "cctvIp": "strmr5.sha.maryland.gov",
# "milePost": 22.27,
# "cameraCategories": [
# "Wash. DC"
# ],
# "routeNumber": 270,
# "commMode": "ONLINE",
# "routePrefix": "IS",
# "routeSuffix": "",
# "opStatus": "OK",
# "publicVideoURL": "https://chart.maryland.gov/Video/GetVideo/7a00a1dc01250075004d823633235daa",
# "lastCachedDataUpdateTime": 1706950514352,
# "name": "I-270 & Old Hundred Rd (MD 109)",
# "id": "7a00a1dc01250075004d823633235daa"
# },
for c in res.json()['data']:
try:
# # 50-ish are marginal; let's ignore that and put 'em on the map anyway
# if not c['commMode'] == "ONLINE":
# print("warn: camera offline; ignoring:", c)
# continue
# if not c['opStatus'] == "OK":
# print("warn: camera not ok; ignoring:", c)
# continue
cameras.append({
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [c['lon'], c['lat']], # yes, [lon, lat] since it's [x, y]
},
"properties": {
"name": c['description'],
"views": [
{
'hasVideo': True,
'src': f"https://{c['cctvIp']}/rtplive/{c['id']}/playlist.m3u8",
},
# {
# 'hasVideo': False,
# 'src': c['imageUrl'],
# }
]
},
})
except Exception as e:
print(c)
raise e
geojson = {
"type": "FeatureCollection",
"features": cameras,
}
with open("data.geojson", "w") as f:
f.write(json.dumps(geojson))
print(f"{len(cameras)} locations found")