def from_request(cls, request):
request['layers'] = request.get('layers').split(',')
request['srs'] = request.get('srs', None)
request['filter'] = request.get('filter')
request['bbox'] = request.get('bbox')
request['width'] = int( request.get('width') )
request['height'] = int( request.get('height') )
request['styles'] = request.get('styles')
request['format'] = request.get('format', 'png')
request['bgcolor'] = request.get('bgcolor')
request['transparent'] = request.get('transparent', False) == 'true'
request['time'] = utils.parsetime(request.get('time'))
request['elevation'] = request.get('elevation', None)
request['v'] = request.get('v', None)
request['fresh'] = request.get('fresh', False)
def from_request(cls, request):
request['layers'] = request.get('layers').split(',')
request['srs'] = request.get('srs', None)
request['filter'] = request.get('filter')
request['bbox'] = request.get('bbox')
request['width'] = int( request.get('width') )
request['height'] = int( request.get('height') )
request['styles'] = request.get('styles').split(',')
request['format'] = request.get('format', 'png')
request['bgcolor'] = request.get('bgcolor')
request['transparent'] = request.get('transparent', False) == 'true'
request['time'] = utils.parsetime(request.get('time'))
request['elevation'] = request.get('elevation', None)
request['v'] = request.get('v', None)
request['fresh'] = request.get('fresh', False)
def maybedate(value):
return parsetime(value)
def GetMap(self,
r,
layers=None,
srs=None,
bbox=None,
width=None,
height=None,
styles=None,
format='image/png',
bgcolor=None,
transparent=True,
exceptions='application/vnd.ogc.se_xml',
times=None,
elevations=None,
**kwargs
):
if not width:
raise common.MissingParameterValue.at('width')
if not height:
raise common.MissingParameterValue.at('height')
if not layers:
raise common.MissingParameterValue.at('layers')
if self.adapter.requires_time and not times:
raise common.MissingParameterValue.at('times')
if self.adapter.requires_elevation and not elevations:
raise common.MissingParameterValue.at('elevations')
d = {
'layers' : layers, 'srs' : srs, 'bbox' : bbox, 'width' : width, 'height' : height,
'styles' : styles, 'format' : format, 'bgcolor' : bgcolor, 'transparent' : transparent,
'exceptions' : exceptions, 'times' : times, 'elevations' : elevations
}
for k,v in kwargs.items():
d[k] = v
cache_key = self.adapter.get_cache_key(**d)
if cache_key:
r = Cache.retrieve(self.adapter.application, cache_key)
if r:
return HttpResponse(r, mimetype=format)
layers = layers.split(',')
width = int(width)
height = int(height)
bbox = [float(x) for x in bbox.split(',')]
if times:
times = [utils.parsetime(t) for t in times.split(',')]
if elevations:
elevations = [float(e) for e in elevations.split(',')]
if format.startswith('image/'):
format = format[len('image/'):]
ds = self.adapter.get_2d_dataset(
query_layers=layers,
srs=srs,
bbox=bbox,
width=width,
height=height,
styles=styles,
bgcolor=bgcolor,
transparent=transparent,
times=times,
elevations=elevations,
**kwargs
)
tmp = None
if type(ds) is not gdal.Dataset: # then it == a Cairo imagesurface or numpy array, or at least... it'd BETTER be
if ds.__class__.__base__ is cairo.Surface:
tmp = tempfile.NamedTemporaryFile(suffix='.png')
ds.write_to_png(tmp.name)
ds = gdal.Open(tmp.name)
# TODO add all the appropriate metadata from the request into the dataset if this == being returned as a GeoTIFF
else:
tmp = tempfile.NamedTemporaryFile(suffix='.tif')
scipy.misc.imsave(tmp.name, ds)
ds = gdal.Open(tmp.name)
# TODO add all the appropriate metadata from the request into the dataset if this == being returned as a GeoTIFF
if format == 'tiff' or format == 'geotiff':
tmp = tempfile.NamedTemporaryFile(suffix='.tif')
ds2 = gdal.GetDriverByName('GTiff').CreateCopy(tmp.name, ds)
del ds2
tmp.seek(0)
ret = HttpResponse(tmp.read(), mimetype='image/' + format)
elif format == 'png':
tmp = tempfile.NamedTemporaryFile(suffix='.png')
ds2 = gdal.GetDriverByName('png').CreateCopy(tmp.name, ds)
del ds2
tmp.seek(0)
ret = HttpResponse(tmp.read(), mimetype='image/' + format)
elif format == 'jpg' or format == 'jpeg':
tmp = tempfile.NamedTemporaryFile(suffix='.jpg')
ds2 = gdal.GetDriverByName('jpeg').CreateCopy(tmp.name, ds)
del ds2
tmp.seek(0)
ret = HttpResponse(tmp.read(), mimetype='image/' + format)
elif format == 'jp2k' or format == 'jpeg2000':
tmp = tempfile.NamedTemporaryFile(suffix='.jp2')
ds2 = gdal.GetDriverByName('jpeg2000').CreateCopy(tmp.name, ds)
del ds2
tmp.seek(0)
ret = HttpResponse(tmp.read(), mimetype='image/' + format)
elif format == 'gif':
tmp = tempfile.NamedTemporaryFile(suffix='.gif')
ds2 = gdal.GetDriverByName('gif').CreateCopy(tmp.name, ds)
del ds2
tmp.seek(0)
ret = HttpResponse(tmp.read(), mimetype='image/' + format)
else:
try:
tmp = tempfile.NamedTemporaryFile(suffix='.' + format)
ds2 = gdal.GetDriverByName(format.encode('ascii')).CreateCopy(tmp.name, ds)
del ds2
tmp.seek(0)
ret = HttpResponse(tmp.read(), mimetype='image/' + format)
except Exception as ex:
del tmp
raise common.NoApplicableCode(str(ex))
if cache_key and tmp:
expiration = self.expires(datetime.datetime.now())
tmp.seek(0)
Cache.add(self.adapter.application, tmp.read(), cache_key, expires=expiration)
return ret