tiler-experiment.py

import base64
from time import time

import TileStache
import ModestMaps

from klein import run, route

cfg = {
    "cache": {
        "name": "Redis",
        "host": "localhost",
        "port": 6379,
        "db": 0,
        "key prefix": "cdb-"
    },
    "layers": {
        "example": {
            "provider": {"name": "mapnik", "mapfile": "style.xml"},
            "projection": "spherical mercator"
        }
    }
}


from contextlib import contextmanager

@contextmanager
def taim():
    start = time()
    yield
    elapsed = time() - start
    print elapsed

@route('/<a>/<b>/<c>', methods=['GET'])
def home(request, a, b, c):
    lat, lon, zoom  = map(float, [a, b, c])
    coord = ModestMaps.Core.Coordinate(lat, lon, zoom)
    config = TileStache.Config.buildConfiguration(cfg)
    with taim() as duration:
        type, bytes = TileStache.getTile(config.layers['example'], coord, 'png')
    return '<img alt="Embedded Image" src="data:image/png;base64,%s"/>' % (base64.b64encode(bytes))

run("localhost", 8080)