def get_conf_dict(slug: str) -> dict:
"""
Takes a slug value for a DataProvider and returns a mapproxy configuration as a dict.
:param slug: A string matching the slug of a DataProvider
:return: a dict.
"""
from eventkit_cloud.jobs.models import DataProvider # Circular reference
try:
provider = cast(DataProvider, get_cached_model(model=DataProvider, prop="slug", value=slug))
except Exception:
raise Exception(f"Unable to find provider for slug {slug}")
# Load and "clean" mapproxy config for displaying a map.
try:
conf_dict = yaml.safe_load(provider.config)
# Pop layers out so that the default layer configuration above is used.
conf_dict.pop("layers", "")
ssl_verify = getattr(settings, "SSL_VERIFICATION", True)
if isinstance(ssl_verify, bool):
if not ssl_verify:
conf_dict["globals"] = {"http": {"ssl_no_cert_checks": ssl_verify}}
else:
conf_dict["globals"] = {"http": {"ssl_ca_certs": ssl_verify}}
conf_dict.update(
{"globals": {"cache": {"lock_dir": "./locks", "tile_lock_dir": "./locks"}, "tiles": {"expires_hours": 0}}}
)
except Exception as e:
logger.error(e)
raise Exception(f"Unable to load a mapproxy configuration for slug {slug}")
return conf_dict
def test_get_cached_model(self, mocked_cache: MagicMock):
export_provider = MagicMock()
expected_name = "SomeProvider"
expected_prop = "slug"
expected_val = "osm"
export_provider.__name__ = expected_name
mocked_cache.get_or_set.return_value = export_provider
get_model = get_model_by_params(export_provider)
return_value = get_cached_model(export_provider, expected_prop,
expected_val)
self.assertEquals(export_provider, return_value)
expected_call_value = f"{expected_name}-{expected_prop}-{expected_val}"
mocked_cache.get_or_set.assert_called_once_with(
expected_call_value, get_model, 360)
def add_restricted_regions_to_config(
base_config: dict, config: dict, slug: str, user: User = None
) -> Tuple[dict, dict]:
from eventkit_cloud.jobs.models import DataProvider, RegionalPolicy
config["sources"]["default"]["coverage"] = {
"clip": True,
"difference": [{"bbox": [-180, -90, 180, 90], "srs": "EPSG:4326"}],
}
providers = [get_cached_model(model=DataProvider, prop="slug", value=slug)]
for policy in RegionalPolicy.objects.filter(providers__in=providers).prefetch_related("justifications"):
# If no user no need to set up regional policy.
if user and not get_valid_regional_justification(policy, user):
config["sources"]["default"]["coverage"]["difference"].append(
{"bbox": GEOSGeometry(policy.region.the_geom).extent, "srs": "EPSG:4326"}
)
for current_cache in base_config.get("caches", {}):
base_config["caches"][current_cache]["disable_storage"] = True
return base_config, config
def map(request: AuthenticatedHttpRequest, slug: str,
path: str) -> HttpResponse:
"""
Makes a proxy request to mapproxy used to get map tiles.
:param request: The httprequest.
:param slug: A string matching the slug of a DataProvider.
:param path: The rest of the url context (i.e. path to the tile some_service/0/0/0.png).
:return: The HttpResponse.
"""
mapproxy_app = create_mapproxy_app(slug, request.user)
params = parse_qs(request.META["QUERY_STRING"])
script_name = f"/map/{slug}"
mp_response = mapproxy_app.get(path,
params,
request.headers,
extra_environ=dict(SCRIPT_NAME=script_name),
expect_errors=True)
response = HttpResponse(mp_response.body, status=mp_response.status_int)
for header, value in mp_response.headers.items():
response[header] = value
if params.get("REQUEST") == ["GetFeatureInfo"]:
provider = cast(DataProvider,
get_cached_model(DataProvider, "slug", slug))
if response.status_code in [200, 202]:
try:
map_query = get_map_query(provider.metadata.get("type"))
response = map_query().get_geojson(response)
except Exception as e:
logger.error(e)
response.status_code = 500
response.content = "No data available."
else:
if provider.metadata:
response.content = "The service was unable to provide data for this location."
else:
response.content = "No data is available for this service."
response["Content-length"] = len(response.content)
return response
