Datasets:
File size: 7,817 Bytes
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"""
Seed Script: India Emergency Data via Overpass API
Generates blood banks, police stations, and fire stations for 25 cities.
Run: python scripts/seed_emergency_data.py
Output:
datasets/emergency/blood_banks/india_blood_banks.json
datasets/emergency/hospitals/india_hospitals_top25.json
datasets/police/stations/india_police_stations.json
"""
import asyncio
import json
import sys
import time
from pathlib import Path
try:
import httpx
except ImportError:
print("Install httpx: pip install httpx")
sys.exit(1)
OVERPASS_URLS = [
"https://overpass-api.de/api/interpreter",
"https://overpass.kumi.systems/api/interpreter",
]
# Top 25 India cities with bounding boxes [south, west, north, east]
CITIES = {
"chennai": [12.8, 80.1, 13.3, 80.4],
"mumbai": [18.8, 72.7, 19.3, 73.0],
"delhi": [28.4, 76.9, 28.9, 77.4],
"bengaluru": [12.8, 77.4, 13.2, 77.8],
"hyderabad": [17.2, 78.3, 17.6, 78.6],
"kolkata": [22.4, 88.2, 22.7, 88.5],
"pune": [18.4, 73.7, 18.6, 74.0],
"ahmedabad": [22.9, 72.4, 23.2, 72.7],
"jaipur": [26.8, 75.7, 27.0, 75.9],
"lucknow": [26.7, 80.8, 27.0, 81.1],
"surat": [21.1, 72.7, 21.3, 73.0],
"nagpur": [21.0, 78.9, 21.3, 79.2],
"patna": [25.5, 85.0, 25.7, 85.2],
"indore": [22.6, 75.7, 22.8, 75.9],
"bhopal": [23.1, 77.3, 23.3, 77.5],
"coimbatore": [10.9, 76.8, 11.1, 77.1],
"visakhapatnam": [17.6, 83.1, 17.8, 83.3],
"kochi": [9.9, 76.2, 10.1, 76.4],
"vadodara": [22.2, 73.1, 22.4, 73.3],
"amritsar": [31.6, 74.8, 31.7, 74.9],
"ranchi": [23.2, 85.2, 23.5, 85.4],
"chandigarh": [30.6, 76.7, 30.8, 76.9],
"guwahati": [26.1, 91.6, 26.2, 91.9],
"bhubaneswar": [20.2, 85.7, 20.4, 85.9],
"thiruvananthapuram": [8.4, 76.8, 8.6, 77.0],
}
async def query_overpass(query: str, retries: int = 3) -> dict:
"""Execute Overpass query with retry across multiple endpoints."""
headers = {
"User-Agent": "SafeVixAI/2.0 Emergency Data Seeder (contact@safevixai.in)",
"Accept": "application/json",
}
async with httpx.AsyncClient(timeout=60, headers=headers) as client:
for attempt in range(retries):
for url in OVERPASS_URLS:
try:
resp = await client.post(url, data={"data": query})
resp.raise_for_status()
return resp.json()
except Exception as e:
print(f" [WARN] {url} failed: {e}")
await asyncio.sleep(2)
return {"elements": []}
def build_query(bbox: list, amenity_filter: str) -> str:
s, w, n, e = bbox
return f"""
[out:json][timeout:30];
(
node[{amenity_filter}]({s},{w},{n},{e});
way[{amenity_filter}]({s},{w},{n},{e});
);
out center tags;
""".strip()
def extract_elements(data: dict, city: str, category: str) -> list:
items = []
for el in data.get("elements", []):
tags = el.get("tags", {})
lat = el.get("lat") or el.get("center", {}).get("lat")
lon = el.get("lon") or el.get("center", {}).get("lon")
if lat is None or lon is None:
continue
items.append({
"id": f"{city}-{el['id']}",
"name": tags.get("name") or f"{category.title()} ({city})",
"category": category,
"city": city,
"lat": float(lat),
"lon": float(lon),
"phone": tags.get("phone") or tags.get("contact:phone"),
"address": ", ".join(filter(None, [
tags.get("addr:housenumber"),
tags.get("addr:street"),
tags.get("addr:suburb"),
tags.get("addr:city") or city.title(),
])) or None,
"is_24hr": tags.get("opening_hours") == "24/7",
"source": "overpass",
})
return items
async def seed_blood_banks():
"""Seed India blood banks from Overpass OSM data."""
print("\n[BLOOD BANKS] Seeding blood banks...")
all_items = []
for city, bbox in CITIES.items():
query = build_query(bbox, 'amenity="blood_bank"')
data = await query_overpass(query)
items = extract_elements(data, city, "blood_bank")
all_items.extend(items)
print(f" {city}: {len(items)} blood banks")
await asyncio.sleep(1) # Rate limit
out_path = Path(__file__).parents[2] / "datasets" / "emergency" / "blood_banks" / "india_blood_banks.json"
out_path.parent.mkdir(parents=True, exist_ok=True)
with open(out_path, "w") as f:
json.dump(all_items, f, indent=2)
print(f"[OK] Saved {len(all_items)} blood banks -> {out_path}")
async def seed_police_stations():
"""Seed India police stations from Overpass OSM data."""
print("\n[POLICE] Seeding police stations...")
all_items = []
for city, bbox in CITIES.items():
query = build_query(bbox, 'amenity="police"')
data = await query_overpass(query)
items = extract_elements(data, city, "police")
all_items.extend(items)
print(f" {city}: {len(items)} police stations")
await asyncio.sleep(1)
out_path = Path(__file__).parents[2] / "datasets" / "police" / "stations" / "india_police_stations.json"
out_path.parent.mkdir(parents=True, exist_ok=True)
with open(out_path, "w") as f:
json.dump(all_items, f, indent=2)
print(f"[OK] Saved {len(all_items)} police stations -> {out_path}")
async def seed_fire_stations():
"""Seed India fire stations from Overpass OSM data."""
print("\n[FIRE] Seeding fire stations...")
all_items = []
for city, bbox in CITIES.items():
query = build_query(bbox, 'amenity="fire_station"')
data = await query_overpass(query)
items = extract_elements(data, city, "fire")
all_items.extend(items)
print(f" {city}: {len(items)} fire stations")
await asyncio.sleep(1)
out_path = Path(__file__).parents[2] / "datasets" / "emergency" / "hospitals" / "india_fire_stations.json"
out_path.parent.mkdir(parents=True, exist_ok=True)
with open(out_path, "w") as f:
json.dump(all_items, f, indent=2)
print(f"[OK] Saved {len(all_items)} fire stations -> {out_path}")
async def seed_hospitals():
"""Seed top-tier India hospitals with trauma/ICU flags."""
print("\n[HOSPITALS] Seeding hospitals...")
all_items = []
for city, bbox in CITIES.items():
query = build_query(bbox, 'amenity="hospital"')
data = await query_overpass(query)
items = extract_elements(data, city, "hospital")
# Tag trauma centres and ICU hospitals
for item in items:
name_lower = item["name"].lower()
item["has_trauma"] = "trauma" in name_lower or "aiims" in name_lower
item["has_icu"] = "icu" in name_lower or "government" in name_lower
all_items.extend(items)
print(f" {city}: {len(items)} hospitals")
await asyncio.sleep(1)
out_path = Path(__file__).parents[2] / "datasets" / "emergency" / "hospitals" / "india_hospitals_top25.json"
out_path.parent.mkdir(parents=True, exist_ok=True)
with open(out_path, "w") as f:
json.dump(all_items, f, indent=2)
print(f"[OK] Saved {len(all_items)} hospitals -> {out_path}")
async def main():
start = time.time()
await seed_blood_banks()
await seed_police_stations()
await seed_fire_stations()
await seed_hospitals()
elapsed = time.time() - start
print(f"\n[DONE] All seeding done in {elapsed:.1f}s")
if __name__ == "__main__":
asyncio.run(main())
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