def main(map_file):
map = mapscript.mapObj(map_file)
map.web.metadata.set("ows_onlineresource", "http://dummy.org/")
ows_req = mapscript.OWSRequest()
ows_req.type = mapscript.MS_GET_REQUEST
ows_req.setParameter("SERVICE", "WMS")
ows_req.setParameter("VERSION", "1.1.0")
ows_req.setParameter("REQUEST", "GetCapabilities")
mapscript.msIO_installStdoutToBuffer()
dispatch_status = map.OWSDispatch(ows_req)
if dispatch_status != mapscript.MS_SUCCESS:
print("An error occurred")
content_type = mapscript.msIO_stripStdoutBufferContentType()
mapscript.msIO_stripStdoutBufferContentHeaders()
result = mapscript.msIO_getStdoutBufferBytes()
# [('Content-Type', 'application/vnd.ogc.wms_xml; charset=UTF-8'), ('Content-Length', '11385')]
response_headers = [('Content-Type', content_type),
('Content-Length', str(len(result)))]
assert int(response_headers[1][1]) > 0
dom = xml.dom.minidom.parseString(result)
print(dom.toprettyxml(indent="", newl=""))
def testWFSPostRequest(self):
"""OWSRequestTestCase.testLoadWMSRequest: OWS can POST a WFS request"""
self.map.web.metadata.set("ows_onlineresource", "http://dummy.org/")
request = mapscript.OWSRequest()
request.contenttype = "application/xml"
post_data = """<wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs" xmlns:ogc="http://www.opengis.net/ogc" service="WFS"
version="1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<wfs:Query typeName="*:POINT" xmlns:feature="http://www.openplans.org/topp">
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>FID</ogc:PropertyName>
<ogc:Literal>1</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
</wfs:Query>
</wfs:GetFeature>
"""
qs = "" # additional parameters can be passed via the querystring
request.loadParamsFromPost(post_data, qs)
mapscript.msIO_installStdoutToBuffer()
status = self.map.OWSDispatch(request)
assert status == mapscript.MS_SUCCESS, status
mapscript.msIO_stripStdoutBufferContentHeaders()
result = mapscript.msIO_getStdoutBufferBytes()
dom = xml.dom.minidom.parseString(result)
assert len(dom.getElementsByTagName('ms:POINT')) == 1
def main(map_file):
map = mapscript.mapObj(map_file)
map.setMetaData("ows_onlineresource", "http://dummy.org/")
ows_req = mapscript.OWSRequest()
ows_req.type = mapscript.MS_GET_REQUEST
ows_req.setParameter("SERVICE", "WMS")
ows_req.setParameter("VERSION", "1.1.0")
ows_req.setParameter("REQUEST", "GetCapabilities")
mapscript.msIO_installStdoutToBuffer()
dispatch_status = map.OWSDispatch(ows_req)
if dispatch_status != mapscript.MS_SUCCESS:
print("An error occurred")
content_type = mapscript.msIO_stripStdoutBufferContentType()
mapscript.msIO_stripStdoutBufferContentHeaders()
result = mapscript.msIO_getStdoutBufferBytes()
# [('Content-Type', 'application/vnd.ogc.wms_xml; charset=UTF-8'), ('Content-Length', '11385')]
response_headers = [('Content-Type', content_type),
('Content-Length', str(len(result)))]
assert int(response_headers[1][1]) > 0
dom = xml.dom.minidom.parseString(result)
print(dom.toprettyxml(indent="", newl=""))
map = mapscript.mapObj('../../tests/test.map')
map.setMetaData("ows_onlineresource", "http://dummy.org/")
ows_req = mapscript.OWSRequest()
ows_req.type = mapscript.MS_GET_REQUEST
ows_req.setParameter("SERVICE", "WMS")
ows_req.setParameter("VERSION", "1.1.0")
ows_req.setParameter("REQUEST", "GetCapabilities")
mapscript.msIO_installStdoutToBuffer()
dispatch_status = map.OWSDispatch(ows_req)
if dispatch_status:
status = '200 OK'
else:
status = '500 Internal Server Error'
content_type = mapscript.msIO_stripStdoutBufferContentType()
mapscript.msIO_stripStdoutBufferContentHeaders()
result = mapscript.msIO_getStdoutBufferBytes()
try:
# MapServer 6.0:
mapscript.msCleanup()
except:
# MapServer 6.1:
mapscript.msCleanup(1)
response_headers = [('Content-Type', content_type),
('Content-Length', str(len(result)))]
def get(self, request, *args, **kwargs):
"""
Html GET method of WmsView. This view renders WMS requests into
corresponding responses using the attached WmsMap class.
Responses are mainly images and xml files.
"""
# Create response
response = HttpResponse()
# Setup wms request object
ows_request = mapscript.OWSRequest()
# If tile kwargs were provided, add tile parameters to request
tileparams = self.tilemode()
if tileparams:
# Get image format from url
format = {'.png': 'image/png',
'.jpg': 'image/jpeg'}[self.kwargs.get('format')]
# Return empty image if tile cant be found
if not self.tile_exists(*tileparams):
# Get image type and size
imagetype = 'PNG' if format == 'image/png' else 'JPEG'
imagesize = 256, 256
response['Content-Type'] = format
# Create image and save it to response
im = Image.new("RGBA", imagesize, (0, 0, 0, 0))
im.save(response, imagetype)
return response
else:
tilebounds = self.get_tile_bounds(*tileparams)
# Get layer name
layers = self.kwargs.get('layers')
# Setup wms parameter object
request_data = {
'SERVICE': 'WMS',
'REQUEST': 'GetMap',
'VERSION': '1.1.1',
'TRANSPARENT': 'true',
'HEIGHT': '256',
'WIDTH': '256',
'SRS': 'EPSG:3857',
'FORMAT': format,
'LAYERS': layers,
'BBOX': tilebounds,
}
request.GET = dict(request.GET.items() + request_data.items())
# Set ows parameters from request data
for param, value in request.GET.items():
ows_request.setParameter(param, value)
# Instantiate WmsMap class
self.wmsmap = self.map_class(request, **kwargs)
# Dynamically use host for declaring service endpoint
onlineresource = request.build_absolute_uri().split('?')[0] + '?'
self.wmsmap.map_object.setMetaData('wms_onlineresource',
onlineresource)
# Dispatch map rendering
self.wmsmap.map_object.OWSDispatch(ows_request)
# Strip buffer from headers
mapscript.msIO_stripStdoutBufferContentHeaders()
# Store contenttype
contenttype = mapscript.msIO_stripStdoutBufferContentType()
# Write data to response
response.write(mapscript.msIO_getStdoutBufferBytes())
# Set contenttype
response['Content-Type'] = contenttype
return response
ows_req.setParameter("SERVICE", "WMS");
ows_req.setParameter("VERSION", "1.3.0");
ows_req.setParameter("REQUEST", "GetCapabilities");
# %% [markdown]
# We use the msIO methods to capture the response the request
# that is sent to ```stdout```.
# The response is typically an HTTP response with HTTP content headers.
# We can strip these out using MapScript
# %%
mapscript.msIO_installStdoutToBuffer()
map.OWSDispatch(ows_req)
content_type = mapscript.msIO_stripStdoutBufferContentType()
# remove the content type header from the XML
mapscript.msIO_stripStdoutBufferContentHeaders() # Strip all Content-* headers
result = mapscript.msIO_getStdoutBufferBytes()
print(result)
# %% [markdown]
# We can also retrieve images from a WMS service.
# Rather than setting lots of individual parameters we can simply load them from
# a string in the same format was would be sent via a web client.
# %%
# First let's get the extent of the map to use in the request
extent = map.extent
print(extent)
bbox = "BBOX={},{},{},{}".format(extent.minx, extent.miny, extent.maxx, extent.maxy)
querystring = "SERVICE=WMS&REQUEST=GetMap&VERSION=1.3.0&LAYERS=lakespy2&CRS=EPSG:26915&FORMAT=image/png&WIDTH=400&HEIGHT=400&{}".format(bbox)
map = mapscript.mapObj('../../tests/test.map')
map.setMetaData( "ows_onlineresource", "http://dummy.org/" )
ows_req = mapscript.OWSRequest()
ows_req.type = mapscript.MS_GET_REQUEST
ows_req.setParameter( "SERVICE", "WMS" );
ows_req.setParameter( "VERSION", "1.1.0" );
ows_req.setParameter( "REQUEST", "GetCapabilities" );
mapscript.msIO_installStdoutToBuffer()
dispatch_status = map.OWSDispatch(ows_req)
if dispatch_status:
status = '200 OK'
else:
status = '500 Internal Server Error'
content_type = mapscript.msIO_stripStdoutBufferContentType()
mapscript.msIO_stripStdoutBufferContentHeaders()
result = mapscript.msIO_getStdoutBufferBytes()
try:
# MapServer 6.0:
mapscript.msCleanup()
except:
# MapServer 6.1:
mapscript.msCleanup(1)
response_headers = [('Content-Type', content_type),
('Content-Length', str(len(result)))]
def get(self, request, *args, **kwargs):
"""
Html GET method of WmsView. This view renders WMS requests into
corresponding responses using the attached WmsMap class.
Responses are mainly images and xml files.
"""
# Create response
response = HttpResponse()
# Setup wms request object
ows_request = mapscript.OWSRequest()
# If tile kwargs were provided, add tile parameters to request
tileparams = self.tilemode()
if tileparams:
# Get image format from url
format = {
'.png': 'image/png',
'.jpg': 'image/jpeg'
}[self.kwargs.get('format')]
# Return empty image if tile cant be found
if not self.tile_exists(*tileparams):
# Get image type and size
imagetype = 'PNG' if format == 'image/png' else 'JPEG'
imagesize = 256, 256
response['Content-Type'] = format
# Create image and save it to response
im = Image.new("RGBA", imagesize, (0, 0, 0, 0))
im.save(response, imagetype)
return response
else:
tilebounds = self.get_tile_bounds(*tileparams)
# Get layer name
layers = self.kwargs.get('layers')
# Setup wms parameter object
request_data = {
'SERVICE': 'WMS',
'REQUEST': 'GetMap',
'VERSION': '1.1.1',
'TRANSPARENT': 'true',
'HEIGHT': '256',
'WIDTH': '256',
'SRS': 'EPSG:3857',
'FORMAT': format,
'LAYERS': layers,
'BBOX': tilebounds,
}
request.GET = dict(request.GET.items() + request_data.items())
# Set ows parameters from request data
for param, value in request.GET.items():
ows_request.setParameter(param, value)
# Instantiate WmsMap class
self.wmsmap = self.map_class(request, **kwargs)
# Dynamically use host for declaring service endpoint
onlineresource = request.build_absolute_uri().split('?')[0] + '?'
self.wmsmap.map_object.setMetaData('wms_onlineresource',
onlineresource)
# Dispatch map rendering
self.wmsmap.map_object.OWSDispatch(ows_request)
# Strip buffer from headers
mapscript.msIO_stripStdoutBufferContentHeaders()
# Store contenttype
contenttype = mapscript.msIO_stripStdoutBufferContentType()
# Write data to response
response.write(mapscript.msIO_getStdoutBufferBytes())
# Set contenttype
response['Content-Type'] = contenttype
return response
