# Self-hosted OSRM routing backend.
#
# Run the one-off preprocessing in ./README.md FIRST — this file only serves
# the already-built graph.
#
#   docker compose up -d
#
# Then point the app at it:
#   flutter build apk --dart-define=OSRM_BASE_URL=http://your-host:5000

services:
  osrm:
    image: ghcr.io/project-osrm/osrm-backend:latest
    container_name: nearle-osrm
    restart: unless-stopped
    command: >
      osrm-routed
      --algorithm mld
      --max-table-size 8000
      /data/${OSRM_REGION:-southern-zone-latest}.osrm
    volumes:
      - ./data:/data:ro
    ports:
      - "5000:5000"
    healthcheck:
      # Coimbatore -> a nearby point; fails loudly if the graph did not load.
      test:
        - CMD-SHELL
        - >-
          wget -qO- "http://localhost:5000/route/v1/driving/76.9558,11.0168;76.9776,10.9984"
          | grep -q '"code":"Ok"' || exit 1
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 40s
    deploy:
      resources:
        limits:
          # Southern-zone MLD needs well under this; raise for all-India.
          memory: 4G