def getrecordbyid(self, id=[], esn='full', outputschema=namespaces['csw'], format=outputformat):
"""
Construct and process a GetRecordById request
Parameters
----------
- id: the list of Ids
- esn: the ElementSetName 'full', 'brief' or 'summary' (default is 'full')
- outputschema: the outputSchema (default is 'http://www.opengis.net/cat/csw/2.0.2')
- format: the outputFormat (default is 'application/xml')
"""
# construct request
data = {
'service': self.service,
'version': self.version,
'request': 'GetRecordById',
'outputFormat': format,
'outputSchema': outputschema,
'elementsetname': esn,
'id': ','.join(id),
}
self.request = '%s%s' % (bind_url(self.url), urlencode(data))
self._invoke()
if self.exceptionreport is None:
self.results = {}
self.records = OrderedDict()
self._parserecords(outputschema, esn)
def getrecordbyid(self, id=[], esn="full", outputschema=namespaces["csw"], format=outputformat):
"""
Construct and process a GetRecordById request
Parameters
----------
- id: the list of Ids
- esn: the ElementSetName 'full', 'brief' or 'summary' (default is 'full')
- outputschema: the outputSchema (default is 'http://www.opengis.net/cat/csw/2.0.2')
- format: the outputFormat (default is 'application/xml')
"""
# construct request
data = {
"service": self.service,
"version": self.version,
"request": "GetRecordById",
"outputFormat": format,
"outputSchema": outputschema,
"elementsetname": esn,
"id": "",
}
self.request = "%s%s%s" % (bind_url(self.url), urlencode(data), ",".join(id))
self._invoke()
if self.exceptionreport is None:
self.results = {}
self.records = {}
self._parserecords(outputschema, esn)
def getrecordbyid(self, id=[], esn='full', outputschema=namespaces['csw'], format=outputformat):
"""
Construct and process a GetRecordById request
Parameters
----------
- id: the list of Ids
- esn: the ElementSetName 'full', 'brief' or 'summary' (default is 'full')
- outputschema: the outputSchema (default is 'http://www.opengis.net/cat/csw/2.0.2')
- format: the outputFormat (default is 'application/xml')
"""
# construct request
data = {
'service': self.service,
'version': self.version,
'request': 'GetRecordById',
'outputFormat': format,
'outputSchema': outputschema,
'elementsetname': esn,
'id': ','.join(id),
}
self.request = '%s%s' % (bind_url(self.url), urlencode(data))
self._invoke()
if self.exceptionreport is None:
self.results = {}
self.records = OrderedDict()
self._parserecords(outputschema, esn)
def get_capabilities_url(self):
if self.resource_type.startswith('OGC:') \
and self.resource_type != 'OGC:STA':
url = '%s%s' % (bind_url(self.url),
RESOURCE_TYPES[self.resource_type]['capabilities'])
else:
url = self.url
return url
def get_capabilities_url(self):
if self.resource_type.startswith('OGC:') \
and self.resource_type != 'OGC:STA':
url = '%s%s' % (bind_url(
self.url), RESOURCE_TYPES[self.resource_type]['capabilities'])
else:
url = self.url
return url
def Subgetmap_url(self,
layers=None,
styles=None,
srs=None,
bbox=None,
format=None,
size=None,
time=None,
transparent=False,
bgcolor='#FFFFFF',
exceptions='application/vnd.ogc.se_xml',
method='Get',
timeout=None,
**kwargs):
try:
base_url = next((m.get('url')
for m in self.getOperationByName('GetMap').methods
if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = {'version': self.version, 'request': 'GetMap'}
request = self.__build_getmap_request(layers=layers,
styles=styles,
srs=srs,
bbox=bbox,
format=format,
size=size,
time=time,
transparent=transparent,
bgcolor=bgcolor,
exceptions=exceptions,
**kwargs)
data = urlencode(request)
##########
#Replace + with %20
##########
data = data.replace("+", "%20")
request = bind_url(base_url) + data
# GetMap validity
u = openURL(base_url,
data,
method,
username=self.username,
password=self.password,
timeout=timeout or self.timeout)
# check for service exceptions, and return
if u.info()['Content-Type'].split(';')[0] in [
'application/vnd.ogc.se_xml'
]:
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(
se_tree.find('ServiceException').text).strip()
raise ServiceException(err_message)
return request
def get_capabilities_url(self):
if self.resource_type.startswith('OGC:') \
and self.resource_type not in \
['OGC:STA', 'OGC:WFS3', 'ESRI:FS']:
url = '%s%s' % (bind_url(
self.url), RESOURCE_TYPES[self.resource_type]['capabilities'])
else:
url = self.url
return url
def __init__(self, url, lang='en-US', version='2.0.2', timeout=10, skip_caps=False,
username=None, password=None):
"""
Construct and process a GetCapabilities request
Parameters
----------
- url: the URL of the CSW
- lang: the language (default is 'en-US')
- version: version (default is '2.0.2')
- timeout: timeout in seconds
- skip_caps: whether to skip GetCapabilities processing on init (default is False)
- username: username for HTTP basic authentication
- password: password for HTTP basic authentication
"""
self.url = url
self.lang = lang
self.version = version
self.timeout = timeout
self.username = username
self.password = password
self.service = 'CSW'
self.exceptionreport = None
self.owscommon = ows.OwsCommon('1.0.0')
if not skip_caps: # process GetCapabilities
# construct request
data = {'service': self.service, 'version': self.version, 'request': 'GetCapabilities'}
self.request = '%s%s' % (bind_url(self.url), urlencode(data))
self._invoke()
if self.exceptionreport is None:
# ServiceIdentification
val = self._exml.find(util.nspath_eval('ows:ServiceIdentification', namespaces))
self.identification=ows.ServiceIdentification(val,self.owscommon.namespace)
# ServiceProvider
val = self._exml.find(util.nspath_eval('ows:ServiceProvider', namespaces))
self.provider=ows.ServiceProvider(val,self.owscommon.namespace)
# ServiceOperations metadata
self.operations=[]
for elem in self._exml.findall(util.nspath_eval('ows:OperationsMetadata/ows:Operation', namespaces)):
self.operations.append(ows.OperationsMetadata(elem, self.owscommon.namespace))
# FilterCapabilities
val = self._exml.find(util.nspath_eval('ogc:Filter_Capabilities', namespaces))
self.filters=fes.FilterCapabilities(val)
def __init__(self, url, lang='en-US', version='2.0.2', timeout=10, skip_caps=False,
username=None, password=None):
"""
Construct and process a GetCapabilities request
Parameters
----------
- url: the URL of the CSW
- lang: the language (default is 'en-US')
- version: version (default is '2.0.2')
- timeout: timeout in seconds
- skip_caps: whether to skip GetCapabilities processing on init (default is False)
- username: username for HTTP basic authentication
- password: password for HTTP basic authentication
"""
self.url = url
self.lang = lang
self.version = version
self.timeout = timeout
self.username = username
self.password = password
self.service = 'CSW'
self.exceptionreport = None
self.owscommon = ows.OwsCommon('1.0.0')
if not skip_caps: # process GetCapabilities
# construct request
data = {'service': self.service, 'version': self.version, 'request': 'GetCapabilities'}
self.request = '%s%s' % (bind_url(self.url), urlencode(data))
self._invoke()
if self.exceptionreport is None:
# ServiceIdentification
val = self._exml.find(util.nspath_eval('ows:ServiceIdentification', namespaces))
self.identification=ows.ServiceIdentification(val,self.owscommon.namespace)
# ServiceProvider
val = self._exml.find(util.nspath_eval('ows:ServiceProvider', namespaces))
self.provider=ows.ServiceProvider(val,self.owscommon.namespace)
# ServiceOperations metadata
self.operations=[]
for elem in self._exml.findall(util.nspath_eval('ows:OperationsMetadata/ows:Operation', namespaces)):
self.operations.append(ows.OperationsMetadata(elem, self.owscommon.namespace))
# FilterCapabilities
val = self._exml.find(util.nspath_eval('ogc:Filter_Capabilities', namespaces))
self.filters=fes.FilterCapabilities(val)
def __init__(self, url, lang="en-US", version="2.0.2", timeout=10, skip_caps=False):
"""
Construct and process a GetCapabilities request
Parameters
----------
- url: the URL of the CSW
- lang: the language (default is 'en-US')
- version: version (default is '2.0.2')
- timeout: timeout in seconds
- skip_caps: whether to skip GetCapabilities processing on init (default is False)
"""
self.url = url
self.lang = lang
self.version = version
self.timeout = timeout
self.service = "CSW"
self.exceptionreport = None
self.owscommon = ows.OwsCommon("1.0.0")
if not skip_caps: # process GetCapabilities
# construct request
data = {"service": self.service, "version": self.version, "request": "GetCapabilities"}
self.request = "%s%s" % (bind_url(self.url), urlencode(data))
self._invoke()
if self.exceptionreport is None:
# ServiceIdentification
val = self._exml.find(util.nspath_eval("ows:ServiceIdentification", namespaces))
self.identification = ows.ServiceIdentification(val, self.owscommon.namespace)
# ServiceProvider
val = self._exml.find(util.nspath_eval("ows:ServiceProvider", namespaces))
self.provider = ows.ServiceProvider(val, self.owscommon.namespace)
# ServiceOperations metadata
self.operations = []
for elem in self._exml.findall(util.nspath_eval("ows:OperationsMetadata/ows:Operation", namespaces)):
self.operations.append(ows.OperationsMetadata(elem, self.owscommon.namespace))
# FilterCapabilities
val = self._exml.find(util.nspath_eval("ogc:Filter_Capabilities", namespaces))
self.filters = fes.FilterCapabilities(val)
def _invoke(self):
# do HTTP request
request_url = self.url
# Get correct URL based on Operation list.
# If skip_caps=True, then self.operations has not been set, so use
# default URL.
if hasattr(self, 'operations'):
caller = inspect.stack()[1][3]
if caller == 'getrecords2': caller = 'getrecords'
try:
op = self.get_operation_by_name(caller)
if isinstance(self.request, six.string_types): # GET KVP
get_verbs = [
x for x in op.methods if x.get('type').lower() == 'get'
]
request_url = get_verbs[0].get('url')
else:
post_verbs = [
x for x in op.methods
if x.get('type').lower() == 'post'
]
if len(post_verbs) > 1:
# Filter by constraints. We must match a PostEncoding of "XML"
for pv in post_verbs:
for const in pv.get('constraints'):
if const.name.lower() == 'postencoding':
values = [v.lower() for v in const.values]
if 'xml' in values:
request_url = pv.get('url')
break
else:
# Well, just use the first one.
request_url = post_verbs[0].get('url')
elif len(post_verbs) == 1:
request_post_url = post_verbs[0].get('url')
except: # no such luck, just go with request_url
pass
if isinstance(self.request, six.string_types): # GET KVP
self.request = '%s%s' % (bind_url(request_url), self.request)
self.response = openURL(self.request,
None,
'Get',
username=self.username,
password=self.password,
timeout=self.timeout).read()
else:
self.request = cleanup_namespaces(self.request)
# Add any namespaces used in the "typeNames" attribute of the
# csw:Query element to the query's xml namespaces.
for query in self.request.findall(
util.nspath_eval('csw:Query', namespaces)):
ns = query.get("typeNames", None)
if ns is not None:
# Pull out "gmd" from something like "gmd:MD_Metadata" from the list
# of typenames
ns_keys = [x.split(':')[0] for x in ns.split(' ')]
self.request = add_namespaces(self.request, ns_keys)
self.request = util.element_to_string(self.request,
encoding='utf-8')
self.response = util.http_post(request_url, self.request,
self.lang, self.timeout,
self.username, self.password)
# parse result see if it's XML
self._exml = etree.parse(BytesIO(self.response))
# it's XML. Attempt to decipher whether the XML response is CSW-ish """
valid_xpaths = [
util.nspath_eval('ows:ExceptionReport', namespaces),
util.nspath_eval('csw:Capabilities', namespaces),
util.nspath_eval('csw:DescribeRecordResponse', namespaces),
util.nspath_eval('csw:GetDomainResponse', namespaces),
util.nspath_eval('csw:GetRecordsResponse', namespaces),
util.nspath_eval('csw:GetRecordByIdResponse', namespaces),
util.nspath_eval('csw:HarvestResponse', namespaces),
util.nspath_eval('csw:TransactionResponse', namespaces)
]
if self._exml.getroot().tag not in valid_xpaths:
raise RuntimeError('Document is XML, but not CSW-ish')
# check if it's an OGC Exception
val = self._exml.find(util.nspath_eval('ows:Exception', namespaces))
if val is not None:
raise ows.ExceptionReport(self._exml, self.owscommon.namespace)
else:
self.exceptionreport = None
def getfeatureinfo(self,
layers=None,
styles=None,
srs=None,
bbox=None,
format=None,
size=None,
time=None,
elevation=None,
dimensions={},
transparent=False,
bgcolor='#FFFFFF',
exceptions='XML',
query_layers=None,
xy=None,
info_format=None,
feature_count=20,
method='Get',
timeout=None,
**kwargs):
try:
base_url = next(
(m.get('url')
for m in self.getOperationByName('GetFeatureInfo').methods
if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
# GetMap-Request
request = self.__build_getmap_request(layers=layers,
styles=styles,
srs=srs,
bbox=bbox,
dimensions=dimensions,
elevation=elevation,
format=format,
size=size,
time=time,
transparent=transparent,
bgcolor=bgcolor,
exceptions=exceptions,
kwargs=kwargs)
# extend to GetFeatureInfo-Request
request['request'] = 'GetFeatureInfo'
if not query_layers:
__str_query_layers = ','.join(layers)
else:
__str_query_layers = ','.join(query_layers)
request['query_layers'] = __str_query_layers
request['i'] = str(xy[0])
request['j'] = str(xy[1])
request['info_format'] = info_format
request['feature_count'] = str(feature_count)
data = urlencode(request)
self.request = bind_url(base_url) + data
u = openURL(base_url,
data,
method,
username=self.username,
password=self.password,
timeout=timeout or self.timeout)
# check for service exceptions, and return
if u.info()['Content-Type'] == 'XML':
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(
se_tree.find('ServiceException').text).strip()
raise ServiceException(err_message)
return u
def getmap(self,
layers=None,
styles=None,
srs=None,
bbox=None,
format=None,
size=None,
time=None,
elevation=None,
dimensions={},
transparent=False,
bgcolor='#FFFFFF',
exceptions='XML',
method='Get',
timeout=None,
**kwargs):
"""Request and return an image from the WMS as a file-like object.
Parameters
----------
layers : list
List of content layer names.
styles : list
Optional list of named styles, must be the same length as the
layers list.
srs : string
A spatial reference system identifier.
Note: this is an invalid query parameter key for 1.3.0 but is being
retained for standardization with 1.1.1.
Note: throws exception if the spatial ref is ESRI's "no reference"
code (EPSG:0)
bbox : tuple
(left, bottom, right, top) in srs units (note, this order does not
change depending on axis order of the crs).
CRS:84: (long, lat)
EPSG:4326: (lat, long)
format : string
Output image format such as 'image/jpeg'.
size : tuple
(width, height) in pixels.
time : string or list or range
Optional. Time value of the specified layer as ISO-8601 (per value)
elevation : string or list or range
Optional. Elevation value of the specified layer.
dimensions: dict (dimension : string or list or range)
Optional. Any other Dimension option, as specified in the GetCapabilities
transparent : bool
Optional. Transparent background if True.
bgcolor : string
Optional. Image background color.
method : string
Optional. HTTP DCP method name: Get or Post.
**kwargs : extra arguments
anything else e.g. vendor specific parameters
Example
-------
wms = WebMapService('http://webservices.nationalatlas.gov/wms/1million',\
version='1.3.0')
img = wms.getmap(layers=['airports1m'],\
styles=['default'],\
srs='EPSG:4326',\
bbox=(-176.646, 17.7016, -64.8017, 71.2854),\
size=(300, 300),\
format='image/jpeg',\
transparent=True)
out = open('example.jpg.jpg', 'wb')
out.write(img.read())
out.close()
"""
try:
base_url = next((m.get('url')
for m in self.getOperationByName('GetMap').methods
if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = self.__build_getmap_request(layers=layers,
styles=styles,
srs=srs,
bbox=bbox,
dimensions=dimensions,
elevation=elevation,
format=format,
size=size,
time=time,
transparent=transparent,
bgcolor=bgcolor,
exceptions=exceptions,
**kwargs)
data = urlencode(request)
self.request = bind_url(base_url) + data
u = openURL(base_url,
data,
method,
username=self.username,
password=self.password,
timeout=timeout or self.timeout)
# need to handle casing in the header keys
headers = {}
for k, v in six.iteritems(u.info()):
headers[k.lower()] = v
# handle the potential charset def
if headers['content-type'].split(';')[0] in [
'application/vnd.ogc.se_xml', 'text/xml'
]:
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(
se_tree.find(nspath('ServiceException',
OGC_NAMESPACE)).text).strip()
raise ServiceException(err_message)
return u
def getfeatureinfo(self, layers=None,
styles=None,
srs=None,
bbox=None,
format=None,
size=None,
time=None,
elevation=None,
dimensions={},
transparent=False,
bgcolor='#FFFFFF',
exceptions='XML',
query_layers=None,
xy=None,
info_format=None,
feature_count=20,
method='Get',
timeout=None,
**kwargs
):
try:
base_url = next((m.get('url') for m in self.getOperationByName('GetFeatureInfo').methods if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
# GetMap-Request
request = self.__build_getmap_request(
layers=layers,
styles=styles,
srs=srs,
bbox=bbox,
dimensions=dimensions,
elevation=elevation,
format=format,
size=size,
time=time,
transparent=transparent,
bgcolor=bgcolor,
exceptions=exceptions,
kwargs=kwargs)
# extend to GetFeatureInfo-Request
request['request'] = 'GetFeatureInfo'
if not query_layers:
__str_query_layers = ','.join(layers)
else:
__str_query_layers = ','.join(query_layers)
request['query_layers'] = __str_query_layers
request['i'] = str(xy[0])
request['j'] = str(xy[1])
request['info_format'] = info_format
request['feature_count'] = str(feature_count)
data = urlencode(request)
self.request = bind_url(base_url) + data
u = openURL(base_url, data, method, username=self.username, password=self.password, timeout=timeout or self.timeout)
# check for service exceptions, and return
if u.info()['Content-Type'] == 'XML':
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(se_tree.find('ServiceException').text).strip()
raise ServiceException(err_message)
return u
def getmap(self, layers=None,
styles=None,
srs=None,
bbox=None,
format=None,
size=None,
time=None,
elevation=None,
dimensions={},
transparent=False,
bgcolor='#FFFFFF',
exceptions='XML',
method='Get',
timeout=None,
**kwargs
):
"""Request and return an image from the WMS as a file-like object.
Parameters
----------
layers : list
List of content layer names.
styles : list
Optional list of named styles, must be the same length as the
layers list.
srs : string
A spatial reference system identifier.
Note: this is an invalid query parameter key for 1.3.0 but is being
retained for standardization with 1.1.1.
Note: throws exception if the spatial ref is ESRI's "no reference"
code (EPSG:0)
bbox : tuple
(left, bottom, right, top) in srs units (note, this order does not
change depending on axis order of the crs).
CRS:84: (long, lat)
EPSG:4326: (lat, long)
format : string
Output image format such as 'image/jpeg'.
size : tuple
(width, height) in pixels.
time : string or list or range
Optional. Time value of the specified layer as ISO-8601 (per value)
elevation : string or list or range
Optional. Elevation value of the specified layer.
dimensions: dict (dimension : string or list or range)
Optional. Any other Dimension option, as specified in the GetCapabilities
transparent : bool
Optional. Transparent background if True.
bgcolor : string
Optional. Image background color.
method : string
Optional. HTTP DCP method name: Get or Post.
**kwargs : extra arguments
anything else e.g. vendor specific parameters
Example
-------
wms = WebMapService('http://webservices.nationalatlas.gov/wms/1million',\
version='1.3.0')
img = wms.getmap(layers=['airports1m'],\
styles=['default'],\
srs='EPSG:4326',\
bbox=(-176.646, 17.7016, -64.8017, 71.2854),\
size=(300, 300),\
format='image/jpeg',\
transparent=True)
out = open('example.jpg.jpg', 'wb')
out.write(img.read())
out.close()
"""
try:
base_url = next((m.get('url') for m in
self.getOperationByName('GetMap').methods if
m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = self.__build_getmap_request(
layers=layers,
styles=styles,
srs=srs,
bbox=bbox,
dimensions=dimensions,
elevation=elevation,
format=format,
size=size,
time=time,
transparent=transparent,
bgcolor=bgcolor,
exceptions=exceptions,
**kwargs)
data = urlencode(request)
self.request = bind_url(base_url) + data
u = openURL(base_url,
data,
method,
username=self.username,
password=self.password,
timeout=timeout or self.timeout)
# need to handle casing in the header keys
headers = {}
for k, v in six.iteritems(u.info()):
headers[k.lower()] = v
# handle the potential charset def
if headers['content-type'].split(';')[0] in ['application/vnd.ogc.se_xml', 'text/xml']:
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(se_tree.find(nspath('ServiceException', OGC_NAMESPACE)).text).strip()
raise ServiceException(err_message)
return u
def getlegendgraphic(self,
layer=None,
styles=None,
format=None,
size=None,
time=None,
transparent=False,
bgcolor='#FFFFFF',
exceptions='application/vnd.ogc.se_xml',
method='Get',
timeout=None,
**kwargs):
# Extract legend url from layer styles
request = None
request = self.contents[layer].getlegendgraphicrequest()
# Construct legend url
if request is None:
try:
base_url = next((m.get('url') for m in self.getOperationByName(
'GetLegendGraphic').methods
if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = {'version': self.version, 'request': 'GetLegendGraphic'}
request = self.__build_getlegendgraphic_request(
layer=layer,
styles=styles,
format=format,
size=size,
time=time,
transparent=transparent,
bgcolor=bgcolor,
exceptions=exceptions,
**kwargs)
data = urlencode(request)
##########
#Replace + with %20
##########
data = data.replace("+", "%20")
request = bind_url(base_url) + data
u = openURL(request,
method,
username=self.username,
password=self.password,
timeout=timeout or self.timeout)
# check for service exceptions, and return
if u.info()['Content-Type'].split(';')[0] in [
'application/vnd.ogc.se_xml'
]:
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(
se_tree.find('ServiceException').text).strip() + request
raise ServiceException(err_message)
return u, request
def getmap(self, layers=None, styles=None, srs=None, bbox=None,
format=None, size=None, time=None, transparent=False,
bgcolor='#FFFFFF',
exceptions='application/vnd.ogc.se_xml',
method='Get',
timeout=None,
**kwargs
):
"""Request and return an image from the WMS as a file-like object.
Parameters
----------
layers : list
List of content layer names.
styles : list
Optional list of named styles, must be the same length as the
layers list.
srs : string
A spatial reference system identifier.
bbox : tuple
(left, bottom, right, top) in srs units.
format : string
Output image format such as 'image/jpeg'.
size : tuple
(width, height) in pixels.
transparent : bool
Optional. Transparent background if True.
bgcolor : string
Optional. Image background color.
method : string
Optional. HTTP DCP method name: Get or Post.
**kwargs : extra arguments
anything else e.g. vendor specific parameters
Example
-------
wms = WebMapService('http://giswebservices.massgis.state.ma.us/geoserver/wms', version='1.1.1')
img = wms.getmap(layers=['massgis:GISDATA.SHORELINES_ARC'],\
styles=[''],\
srs='EPSG:4326',\
bbox=(-70.8, 42, -70, 42.8),\
size=(300, 300),\
format='image/jpeg',\
transparent=True)
out = open('example.jpg', 'wb')
bytes_written = out.write(img.read())
out.close()
"""
try:
base_url = next((m.get('url') for m in self.getOperationByName('GetMap').methods if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = {'version': self.version, 'request': 'GetMap'}
request = self.__build_getmap_request(
layers=layers,
styles=styles,
srs=srs,
bbox=bbox,
format=format,
size=size,
time=time,
transparent=transparent,
bgcolor=bgcolor,
exceptions=exceptions,
**kwargs)
data = urlencode(request)
self.request = bind_url(base_url) + data
u = openURL(base_url, data, method, timeout=timeout or self.timeout, auth=self.auth)
# check for service exceptions, and return
if u.info().get('Content-Type', '').split(';')[0] in ['application/vnd.ogc.se_xml']:
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(se_tree.find('ServiceException').text).strip()
raise ServiceException(err_message)
return u
def getmap(self, layers=None, styles=None, srs=None, bbox=None,
format=None, size=None, time=None, transparent=False,
bgcolor='#FFFFFF',
exceptions='application/vnd.ogc.se_xml',
method='Get',
timeout=None,
**kwargs
):
"""Request and return an image from the WMS as a file-like object.
Parameters
----------
layers : list
List of content layer names.
styles : list
Optional list of named styles, must be the same length as the
layers list.
srs : string
A spatial reference system identifier.
bbox : tuple
(left, bottom, right, top) in srs units.
format : string
Output image format such as 'image/jpeg'.
size : tuple
(width, height) in pixels.
transparent : bool
Optional. Transparent background if True.
bgcolor : string
Optional. Image background color.
method : string
Optional. HTTP DCP method name: Get or Post.
**kwargs : extra arguments
anything else e.g. vendor specific parameters
Example
-------
wms = WebMapService('http://giswebservices.massgis.state.ma.us/geoserver/wms', version='1.1.1')
img = wms.getmap(layers=['massgis:GISDATA.SHORELINES_ARC'],\
styles=[''],\
srs='EPSG:4326',\
bbox=(-70.8, 42, -70, 42.8),\
size=(300, 300),\
format='image/jpeg',\
transparent=True)
out = open('example.jpg', 'wb')
bytes_written = out.write(img.read())
out.close()
"""
try:
base_url = next((m.get('url') for m in self.getOperationByName('GetMap').methods if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = {'version': self.version, 'request': 'GetMap'}
request = self.__build_getmap_request(
layers=layers,
styles=styles,
srs=srs,
bbox=bbox,
format=format,
size=size,
time=time,
transparent=transparent,
bgcolor=bgcolor,
exceptions=exceptions,
**kwargs)
data = urlencode(request)
self.request = bind_url(base_url) + data
u = openURL(base_url, data, method, username=self.username, password=self.password, timeout=timeout or self.timeout)
# check for service exceptions, and return
if u.info().get('Content-Type', '').split(';')[0] in ['application/vnd.ogc.se_xml']:
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(se_tree.find('ServiceException').text).strip()
raise ServiceException(err_message)
return u
def _invoke(self):
# do HTTP request
request_url = self.url
# Get correct URL based on Operation list.
# If skip_caps=True, then self.operations has not been set, so use
# default URL.
if hasattr(self, 'operations'):
caller = inspect.stack()[1][3]
if caller == 'getrecords2': caller = 'getrecords'
try:
op = self.get_operation_by_name(caller)
if isinstance(self.request, six.string_types): # GET KVP
get_verbs = [x for x in op.methods if x.get('type').lower() == 'get']
request_url = get_verbs[0].get('url')
else:
post_verbs = [x for x in op.methods if x.get('type').lower() == 'post']
if len(post_verbs) > 1:
# Filter by constraints. We must match a PostEncoding of "XML"
for pv in post_verbs:
for const in pv.get('constraints'):
if const.name.lower() == 'postencoding':
values = [v.lower() for v in const.values]
if 'xml' in values:
request_url = pv.get('url')
break
else:
# Well, just use the first one.
request_url = post_verbs[0].get('url')
elif len(post_verbs) == 1:
request_url = post_verbs[0].get('url')
except: # no such luck, just go with request_url
pass
if isinstance(self.request, six.string_types): # GET KVP
self.request = '%s%s' % (bind_url(request_url), self.request)
self.response = openURL(self.request, None, 'Get', username=self.username, password=self.password, timeout=self.timeout).read()
else:
self.request = cleanup_namespaces(self.request)
# Add any namespaces used in the "typeNames" attribute of the
# csw:Query element to the query's xml namespaces.
for query in self.request.findall(util.nspath_eval('csw:Query', namespaces)):
ns = query.get("typeNames", None)
if ns is not None:
# Pull out "gmd" from something like "gmd:MD_Metadata" from the list
# of typenames
ns_keys = [x.split(':')[0] for x in ns.split(' ')]
self.request = add_namespaces(self.request, ns_keys)
self.request = util.element_to_string(self.request, encoding='utf-8')
self.response = util.http_post(request_url, self.request, self.lang, self.timeout, self.username, self.password)
# parse result see if it's XML
self._exml = etree.parse(BytesIO(self.response))
# it's XML. Attempt to decipher whether the XML response is CSW-ish """
valid_xpaths = [
util.nspath_eval('ows:ExceptionReport', namespaces),
util.nspath_eval('csw:Capabilities', namespaces),
util.nspath_eval('csw:DescribeRecordResponse', namespaces),
util.nspath_eval('csw:GetDomainResponse', namespaces),
util.nspath_eval('csw:GetRecordsResponse', namespaces),
util.nspath_eval('csw:GetRecordByIdResponse', namespaces),
util.nspath_eval('csw:HarvestResponse', namespaces),
util.nspath_eval('csw:TransactionResponse', namespaces)
]
if self._exml.getroot().tag not in valid_xpaths:
raise RuntimeError('Document is XML, but not CSW-ish')
# check if it's an OGC Exception
val = self._exml.find(util.nspath_eval('ows:Exception', namespaces))
if val is not None:
raise ows.ExceptionReport(self._exml, self.owscommon.namespace)
else:
self.exceptionreport = None
def Subgetmap_url(self,
layers=None,
styles=None,
srs=None,
bbox=None,
format=None,
size=None,
time=None,
elevation=None,
dimensions={},
transparent=False,
bgcolor='#FFFFFF',
exceptions='XML',
method='Get',
timeout=None,
**kwargs):
try:
base_url = next((m.get('url')
for m in self.getOperationByName('GetMap').methods
if m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = self.__build_getmap_request(layers=layers,
styles=styles,
srs=srs,
bbox=bbox,
dimensions=dimensions,
elevation=elevation,
format=format,
size=size,
time=time,
transparent=transparent,
bgcolor=bgcolor,
exceptions=exceptions,
**kwargs)
data = urlencode(request)
data = data.replace("+", "%20")
request = bind_url(base_url) + data
u = openURL(base_url,
data,
method,
username=self.username,
password=self.password,
timeout=timeout or self.timeout)
# need to handle casing in the header keys
headers = {}
for k, v in six.iteritems(u.info()):
headers[k.lower()] = v
# handle the potential charset def
if headers['content-type'].split(';')[0] in [
'application/vnd.ogc.se_xml', 'text/xml'
]:
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(
se_tree.find(
subcommon.nspath('ServiceException',
OGC_NAMESPACE)).text).strip()
raise ServiceException(err_message)
return request
def _invoke(self, mock_requests_post, mock_requests_request):
try:
if self.auth.token is not None:
self.auth.username = "******"
self.auth.password = self.auth.token
except AttributeError:
pass
# do HTTP request
request_url = self.url
# Get correct URL based on Operation list.
# If skip_caps=True, then self.operations has not been set, so use
# default URL.
if hasattr(self, "operations"):
caller = inspect.stack()[1][3]
if caller == "getrecords2":
caller = "getrecords"
# noinspection PyBroadException
try:
op = self.get_operation_by_name(caller)
if isinstance(self.request, str): # GET KVP
get_verbs = [
x for x in op.methods if x.get("type").lower() == "get"
]
request_url = get_verbs[0].get("url")
else:
post_verbs = [
x for x in op.methods
if x.get("type").lower() == "post"
]
if len(post_verbs) > 1:
# Filter by constraints. We must match a PostEncoding of "XML"
for pv in post_verbs:
for const in pv.get("constraints"):
if const.name.lower() == "postencoding":
values = [v.lower() for v in const.values]
if "xml" in values:
request_url = pv.get("url")
break
else:
# Well, just use the first one.
request_url = post_verbs[0].get("url")
elif len(post_verbs) == 1:
request_url = post_verbs[0].get("url")
except Exception: # nosec
# no such luck, just go with request_url
pass
# print("Echo")
if isinstance(self.request, str): # GET KVP
# print("Foxtrot")
self.request = "%s%s" % (bind_url(request_url), self.request)
self.response = openURL(self.request,
None,
"Get",
timeout=self.timeout,
auth=self.auth).read()
# debug
# print("invoke")
# print(self.response[0:100])
else:
# print("Golf")
self.request = cleanup_namespaces(self.request)
# Add any namespaces used in the "typeNames" attribute of the
# csw:Query element to the query's xml namespaces.
# noinspection PyUnresolvedReferences
for query in self.request.findall(
util.nspath_eval("csw:Query", csw_namespaces)):
ns = query.get("typeNames", None)
if ns is not None:
# Pull out "gmd" from something like "gmd:MD_Metadata" from the list
# of typenames
ns_keys = [x.split(":")[0] for x in ns.split(" ")]
self.request = add_namespaces(self.request, ns_keys)
self.request = add_namespaces(self.request, "ows")
self.request = util.element_to_string(self.request,
encoding="utf-8")
# print("Hotel")
self.response = http_post(request_url,
self.request,
self.lang,
self.timeout,
auth=self.auth)
# debug
# print("invoke 2")
# print(self.response[0:100])
# debug
# print("parse")
# print(self.response[0:100])
# print(self.response)
# parse result see if it's XML
self._exml = etree.parse(BytesIO(self.response))
# it's XML. Attempt to decipher whether the XML response is CSW-ish """
valid_xpaths = [
util.nspath_eval("ows:ExceptionReport", csw_namespaces),
util.nspath_eval("csw:Capabilities", csw_namespaces),
util.nspath_eval("csw:DescribeRecordResponse", csw_namespaces),
util.nspath_eval("csw:GetDomainResponse", csw_namespaces),
util.nspath_eval("csw:GetRecordsResponse", csw_namespaces),
util.nspath_eval("csw:GetRecordByIdResponse", csw_namespaces),
util.nspath_eval("csw:HarvestResponse", csw_namespaces),
util.nspath_eval("csw:TransactionResponse", csw_namespaces),
]
if self._exml.getroot().tag not in valid_xpaths:
raise RuntimeError("Document is XML, but not CSW-ish")
# check if it's an OGC Exception
val = self._exml.find(util.nspath_eval("ows:Exception",
csw_namespaces))
if val is not None:
raise ows.ExceptionReport(self._exml, self.owscommon.namespace)
else:
self.exceptionreport = None
def getlegendgraphic(self, layer=None,
style=None,
format=None,
size=None,
exceptions='XML',
method='Get',
timeout=None,
**kwargs
):
"""Request and return an image from the WMS as a file-like object.
Parameters
----------
layer : string
Content layer name.
style : string
Named style.
format : string
Output image format such as 'image/jpeg'.
width : integer
width in pixels.
height : integer
height in pixels.
method : string
Optional. HTTP DCP method name: Get or Post.
**kwargs : extra arguments
anything else e.g. vendor specific parameters
Example
-------
wms = WebMapService('http://webservices.nationalatlas.gov/wms/1million',\
version='1.3.0')
img = wms.getlegendgraphic(layer='airports1m',\
style='default',\
size=[300, 300],\
format='image/jpeg',\
out = open('example.jpg', 'wb')
out.write(img.read())
out.close()
"""
try:
base_url = next((m.get('url') for m in
self.getOperationByName('GetMap').methods if
m.get('type').lower() == method.lower()))
except StopIteration:
base_url = self.url
request = self.__build_getlegendgraphic_request(
layer=layer,
style=style,
format=format,
size=size,
exceptions=exceptions,
**kwargs)
data = urlencode(request)
self.request = bind_url(base_url) + data
u = openURL(base_url,
data,
method,
username=self.username,
password=self.password,
timeout=timeout or self.timeout)
# need to handle casing in the header keys
headers = {}
for k, v in six.iteritems(u.info()):
headers[k.lower()] = v
# handle the potential charset def
if headers['content-type'].split(';')[0] in ['application/vnd.ogc.se_xml', 'text/xml']:
se_xml = u.read()
se_tree = etree.fromstring(se_xml)
err_message = six.text_type(se_tree.find(nspath('ServiceException', OGC_NAMESPACE)).text).strip()
raise ServiceException(err_message)
return u
