def test_tile_url(self):
"""Test to return tile format."""
filename = os.path.join(gisdata.GOOD_DATA, 'raster/test_grid.tif')
uploaded = file_upload(filename)
tile_format = tile_url_format(uploaded.name)
# Accessing this directly should return 404
response = self.client.get(tile_format)
self.assertEqual(response.status_code, 404)
qgis_tile_url = tile_url(uploaded, 11, 1576, 1054, internal=True)
parse_result = urlparse.urlparse(qgis_tile_url)
base_net_loc = urlparse.urlparse(settings.QGIS_SERVER_URL).netloc
self.assertEqual(base_net_loc, parse_result.netloc)
query_string = urlparse.parse_qs(parse_result.query)
expected_query_string = {
'SERVICE': 'WMS',
'VERSION': '1.3.0',
'REQUEST': 'GetMap',
'BBOX': '10801469.341,-606604.256471,10821037.2203,-587036.37723',
'CRS': 'EPSG:3857',
'WIDTH': '256',
'HEIGHT': '256',
'LAYERS': 'test_grid',
'STYLE': 'default',
'FORMAT': 'image/png',
'TRANSPARENT': 'true',
'DPI': '96',
'MAP_RESOLUTION': '96',
'FORMAT_OPTIONS': 'dpi:96'
}
for key, value in expected_query_string.iteritems():
# urlparse.parse_qs returned a dictionary of list
actual_value = query_string[key][0]
self.assertEqual(actual_value, value)
# Check that qgis server returns valid url
# Use python requests because the endpoint is not django
response = requests.get(qgis_tile_url)
self.assertEqual(response.status_code, 200)
self.assertEqual(response.headers.get('Content-Type'), 'image/png')
self.assertEqual(what('', h=response.content), 'png')
uploaded.delete()
def test_tile_url(self):
"""Test to return tile format."""
filename = os.path.join(gisdata.GOOD_DATA, 'raster/test_grid.tif')
uploaded = file_upload(filename)
tile_format = tile_url_format(uploaded.name)
# Accessing this directly should return 404
response = self.client.get(tile_format)
self.assertEqual(response.status_code, 404)
qgis_tile_url = tile_url(uploaded, 11, 1576, 1054, internal=True)
parse_result = urlparse.urlparse(qgis_tile_url)
base_net_loc = urlparse.urlparse(settings.QGIS_SERVER_URL).netloc
self.assertEqual(base_net_loc, parse_result.netloc)
query_string = urlparse.parse_qs(parse_result.query)
expected_query_string = {
'SERVICE': 'WMS',
'VERSION': '1.3.0',
'REQUEST': 'GetMap',
'BBOX': '10801469.341,-606604.256471,10821037.2203,-587036.37723',
'CRS': 'EPSG:3857',
'WIDTH': '256',
'HEIGHT': '256',
'LAYERS': 'test_grid',
'STYLE': 'default',
'FORMAT': 'image/png',
'TRANSPARENT': 'true',
'DPI': '96',
'MAP_RESOLUTION': '96',
'FORMAT_OPTIONS': 'dpi:96'
}
for key, value in expected_query_string.iteritems():
# urlparse.parse_qs returned a dictionary of list
actual_value = query_string[key][0]
self.assertEqual(actual_value, value)
# Check that qgis server returns valid url
# Use python requests because the endpoint is not django
response = requests.get(qgis_tile_url)
self.assertEqual(response.status_code, 200)
self.assertEqual(response.headers.get('Content-Type'), 'image/png')
self.assertEqual(what('', h=response.content), 'png')
uploaded.delete()
def tile(request, layername, z, x, y, style=None):
"""Get the tile from a layer.
:param layername: The layer name in Geonode.
:type layername: basestring
:param z: TMS coordinate, zoom parameter
:type z: int, str
:param x: TMS coordinate, longitude parameter
:type x: int, str
:param y: TMS coordinate, latitude parameter
:type y: int, str
:param style: Layer style to choose
:type style: str
:return: The HTTPResponse with a PNG.
"""
x = int(x)
y = int(y)
z = int(z)
layer = get_object_or_404(Layer, name=layername)
qgis_layer = get_object_or_404(QGISServerLayer, layer=layer)
# get default style name
if not style:
# generate style cache
if not qgis_layer.default_style:
try:
style_list(layer, internal=False)
except BaseException:
print 'Failed to fetch styles'
# refresh values
qgis_layer.refresh_from_db()
if qgis_layer.default_style:
style = qgis_layer.default_style.name
tile_path = QGIS_SERVER_CONFIG['tile_path']
tile_filename = tile_path % (qgis_layer.qgis_layer_name, style, z, x, y)
if not os.path.exists(tile_filename):
if not os.path.exists(os.path.dirname(tile_filename)):
os.makedirs(os.path.dirname(tile_filename))
# Use internal url
url = tile_url(layer, z, x, y, style=style, internal=True)
result = cache_request.delay(url, tile_filename)
# Attempt to run task synchronously
if not result.get():
# If not succeded, provides error message.
return HttpResponseServerError('Failed to fetch tile.')
if image_format(tile_filename) != 'png':
logger.error('%s is not valid PNG.' % tile_filename)
os.remove(tile_filename)
if not os.path.exists(tile_filename):
return HttpResponse('The tile could not be found.', status=409)
with open(tile_filename, 'rb') as f:
return HttpResponse(f.read(), content_type='image/png')
