def query(self, query):
"""Perform a nominatim query.
:param query: Query to execute on the nominatim server.
:type query: basestring
:return: The result of the query as a dictionary.
:rtype: dict
:raise NetWorkErrorException
"""
url_query = QUrl(self.__url)
query_string = QUrlQuery()
query_string.addQueryItem('q', query)
query_string.addQueryItem('format', 'json')
query_string.addQueryItem('info', 'QgisQuickOSMPlugin')
url_query.setQuery(query_string)
loop = QEventLoop()
downloader = QgsFileDownloader(url_query,
self.result_path,
delayStart=True)
downloader.downloadExited.connect(loop.quit)
downloader.downloadError.connect(self.error)
downloader.downloadCanceled.connect(self.canceled)
downloader.downloadCompleted.connect(self.completed)
downloader.startDownload()
loop.exec_()
with open(self.result_path) as json_file:
data = json.load(json_file)
return data
def prepare_url(self):
"""Prepare a query to be as an URL.
if the query is not ready to be URL prepared, a None is returned.
:return: The URL encoded with the query.
:rtype: basestring
"""
if not self._query_is_ready:
return None
if self._output_format:
query = re.sub(
r'output="[a-z]*"',
'output="%s"' % self._output_format,
self._query_prepared)
query = re.sub(
r'\[out:[a-z]*',
'[out:%s' % self._output_format,
query)
else:
query = self._query_prepared
url_query = QUrl(self._overpass)
query_string = QUrlQuery()
query_string.addQueryItem('data', query)
query_string.addQueryItem('info', 'QgisQuickOSMPlugin')
url_query.setQuery(query_string)
return url_query.toString()
def query(self, query):
"""
Perform a nominatim query
@param query: Query to execute
@type query: str
@raise NetWorkErrorException
@return: the result of the query
@rtype: str
"""
url_query = QUrl(self.__url)
# query = QUrl.toPercentEncoding(query)
query_string = QUrlQuery()
query_string.addQueryItem('q', query)
query_string.addQueryItem('format', 'json')
query_string.addQueryItem('info', 'QgisQuickOSMPlugin')
url_query.setQuery(query_string)
request = QNetworkRequest(url_query)
# request.setRawHeader("User-Agent", "QuickOSM")
self.network_reply = self.network.get(request)
self.loop = QEventLoop()
self.network.finished.connect(self._end_of_request)
self.loop.exec_()
if self.network_reply.error() == QNetworkReply.NoError:
return json.loads(self.data)
else:
raise NetWorkErrorException(suffix="Nominatim API")
def process_get_call(self,
url,
url_query_items,
timeout=None,
report_url=True):
"""
Run a GET request and return reply data
:param url: url for request
:param url_query_items:
:param timeout: in ms
:param report_url: True if URL should be reported to feedback
:return: response or error message in json format
"""
url_query = QUrl(url)
if report_url:
self.report_info('GET ' + url_query.toString())
if url_query_items:
url_query.setQuery(url_query_items)
request = QNetworkRequest(url_query)
if self.connection.auth_cfg != '':
request.setRawHeader("Accept".encode("utf-8"),
"*/*".encode("utf-8"))
if timeout is not None and "setTransferTimeout" in dir(request):
request.setTransferTimeout(timeout)
reply = self.network_access_manager.blockingGet(
request, self.connection.auth_cfg, True, self.feedback)
return self.process_qgs_reply(reply)
def prepare_url(self):
"""Prepare a query to be as an URL.
if the query is not ready to be URL prepared, a None is returned.
:return: The URL encoded with the query.
:rtype: basestring
"""
if not self._query_is_ready:
return None
if self._output_format:
query = re.sub(r'output="[a-z]*"',
'output="{}"'.format(self._output_format),
self._query_prepared)
query = re.sub(r'\[out:[a-z]*',
'[out:{}'.format(self._output_format), query)
else:
query = self._query_prepared
url_query = QUrl(self._overpass)
query_string = QUrlQuery()
query_string.addQueryItem('data', query)
query_string.addQueryItem('info', 'QgisQuickOSMPlugin')
url_query.setQuery(query_string)
return url_query.toString()
def query(self, query):
"""
Perform a nominatim query
@param query: Query to execute
@type query: str
@raise NetWorkErrorException
@return: the result of the query
@rtype: str
"""
url_query = QUrl(self.__url)
# query = QUrl.toPercentEncoding(query)
query_string = QUrlQuery()
query_string.addQueryItem('q', query)
query_string.addQueryItem('format', 'json')
query_string.addQueryItem('info', 'QgisQuickOSMPlugin')
url_query.setQuery(query_string)
request = QNetworkRequest(url_query)
# request.setRawHeader("User-Agent", "QuickOSM")
self.network_reply = self.network.get(request)
self.loop = QEventLoop()
self.network.finished.connect(self._end_of_request)
self.loop.exec_()
if self.network_reply.error() == QNetworkReply.NoError:
return json.loads(self.data)
else:
raise NetWorkErrorException(suffix="Nominatim API")
def getHttp(uri, params):
nam = QgsNetworkAccessManager.instance()
QgsApplication.setOverrideCursor(Qt.WaitCursor)
try:
rq = QUrl(uri)
q = QUrlQuery()
for (k, v) in params.items():
q.addQueryItem(k, v)
rq.setQuery(q)
req = QNetworkRequest(rq)
try:
reply = nam.blockingGet(req)
resource = reply.content().data().decode("utf8")
r = json.loads(resource)
if isinstance(r, list):
return r
else:
return [r]
except Exception as e:
for m in e.args:
QgsMessageLog.logMessage(m, "Extensions")
finally:
QgsApplication.restoreOverrideCursor()
return None
def url_with_param(url, params) -> str:
url = QUrl(url)
q = QUrlQuery(url)
for key, value in params.items():
q.addQueryItem(key, value)
url.setQuery(q)
return url
def wfs(self):
name = self.connectionCombo.currentText()
conn = QgsOwsConnection("wfs", name)
uri = conn.uri().param('url')
req_version = conn.uri().param('version')
s = QgsSettings()
checked_version = s.value(
"qgis/connections-wfs/{}/checked_version".format(name), False)
if req_version == "auto" or not checked_version:
# detect version
u = QUrlQuery()
u.addQueryItem("request", "GetCapabilities")
u.addQueryItem("service", "WFS")
if req_version == "auto":
u.addQueryItem("acceptversions", "2.0.0,1.1.0,1.0.0")
elif not checked_version:
u.addQueryItem("version", req_version)
final_url = QUrl(uri)
final_url.setQuery(u)
xml, ns_map = xml_parse(remote_open_from_qgis(
final_url.toString()))
root = xml.getroot()
if 'ows' in ns_map:
versions = [
v.text for v in root.findall(
"./ows:ServiceIdentification/ows:ServiceTypeVersion",
ns_map)
]
else:
versions = [
v.text for v in root.findall(
"./ServiceIdentification/ServiceTypeVersion", ns_map)
]
if not versions:
if 'version' in root.attrib:
versions = [root.attrib['version']]
if not versions:
raise RuntimeError("Cannot determine WFS version")
# take the greatest version, if more than one
version = sorted(versions)[-1]
if version != req_version:
QgsMessageLog.logMessage(
"Requested WFS version {}, got {}".format(
req_version, version))
else:
s.setValue(
"qgis/connections-wfs/{}/checked_version".format(name),
True)
else:
version = req_version
with qgis_proxy_settings():
return WebFeatureService(url=uri, version=version)
def query(self, query):
"""
Make a query to the overpass
@param query:Query to execute
@type query:str
@raise OverpassBadRequestException,NetWorkErrorException,
OverpassTimeoutException
@return: the result of the query
@rtype: str
"""
url_query = QUrl(self.__url + 'interpreter')
# The output format can be forced (JSON or XML)
if self.__output:
query = re.sub(r'output="[a-z]*"',
'output="' + self.__output + '"', query)
query = re.sub(r'\[out:[a-z]*', '[out:' + self.__output, query)
# noinspection PyCallByClass
# encoded_query = QUrl.toPercentEncoding(query)
query_string = QUrlQuery()
query_string.addQueryItem('data', query)
query_string.addQueryItem('info', 'QgisQuickOSMPlugin')
url_query.setQuery(query_string)
request = QNetworkRequest(url_query)
# request.setRawHeader("User-Agent", "QuickOSM")
self.network_reply = self.network.get(request)
self.loop = QEventLoop()
self.network.finished.connect(self._end_of_request)
self.loop.exec_()
if self.network_reply.error() == QNetworkReply.NoError:
file_obj = codecs.open(self.result_path, 'r', 'utf-8')
file_obj.seek(0, 2)
fsize = file_obj.tell()
file_obj.seek(max(fsize - 1024, 0), 0)
lines = file_obj.readlines()
lines = lines[-10:] # Get last 10 lines
timeout = '<remark> runtime error: Query timed out in "[a-z]+" ' \
'at line [\d]+ after ([\d]+) seconds. </remark>'
if re.search(timeout, ''.join(lines)):
raise OverpassTimeoutException
else:
return self.result_path
elif self.network_reply.error() == QNetworkReply.UnknownContentError:
raise OverpassBadRequestException
else:
raise NetWorkErrorException(suffix="Overpass OSM API")
def post(self,
url,
params: dict = None,
data: bytes = b'',
timeout: int = 20000,
content_type: str = None,
**kwargs) -> Reply:
'''
posts data to given url (POST)
asynchronous posts are not implemented yet
Parameters
----------
url : str
the url to post to
params : dict, optional
query parameters with the parameters as keys and the values as
values, defaults to no query parameters
data : bytes, optional
the data to post as a byte-string, defaults to no data posted
timeout : int, optional
the timeout of synchronous requests in milliseconds, will be ignored
when making asynchronous requests, defaults to 20000 ms
content_type : str, optional
the content type of the data, puts content type into header of
request
**kwargs :
additional parameters matching the requests-interface will
be ignored (e.g. verify is not supported)
Returns
----------
Reply
the response is returned in case of synchronous calls, if you are
using asynchronous calls retrieve the response via the finished-
signal instead
'''
qurl = QUrl(url)
if params:
query = QUrlQuery()
for param, value in params.items():
query.addQueryItem(param, str(value))
qurl.setQuery(query.query())
if self.synchronous:
return self._post_sync(qurl,
timeout=timeout,
data=data,
content_type=content_type)
return self._post_async(qurl, content_type=content_type)
def clean_ows_url(url):
"""clean an OWS URL of added basic service parameters"""
url = QUrl(url)
query_string = url.query()
if query_string:
query_string = QUrlQuery(query_string)
query_string.removeQueryItem('service')
query_string.removeQueryItem('SERVICE')
query_string.removeQueryItem('request')
query_string.removeQueryItem('REQUEST')
url.setQuery(query_string)
return url.toString()
def clean_ows_url(url):
"""clean an OWS URL of added basic service parameters"""
url = QUrl(url)
query_string = url.query()
if query_string:
query_string = QUrlQuery(query_string)
query_string.removeQueryItem('service')
query_string.removeQueryItem('SERVICE')
query_string.removeQueryItem('request')
query_string.removeQueryItem('REQUEST')
url.setQuery(query_string)
return url.toString()
def process_post_call(self,
url,
url_query_items,
data,
is_read_only=True,
report_url=True):
"""
Run a POST request and return reply data
:param url: url for request
:param url_query_items:
:param data:
:param is_read_only: True if the request does not update data
:param report_url: True if URL should be reported to feedback
:return: response or error message in json format
"""
if self.connection.read_only and not is_read_only:
return {
"error": {
"msg": "Graphium connection is set to read-only!"
}
}
url_query = QUrl(url)
if report_url:
self.report_info('POST ' + url_query.toString())
if url_query_items:
url_query.setQuery(url_query_items)
# data_byte_array = json.dumps(data).encode('utf8')
# data = QtCore.QByteArray( json.dumps( json_request ) )
data_byte_array = QJsonDocument.fromVariant(data)
request = QNetworkRequest(url_query)
if self.connection.auth_cfg != '':
request.setRawHeader("Accept".encode("utf-8"),
"*/*".encode("utf-8"))
request.setHeader(QNetworkRequest.ContentTypeHeader,
"application/json")
reply = self.network_access_manager.blockingPost(
request, data_byte_array.toJson(), self.connection.auth_cfg, True,
self.feedback)
return self.process_qgs_reply(reply)
def do_request(self, point: QgsPointXY) -> None:
query = QUrlQuery()
query.addQueryItem("lat", str(point.y()))
query.addQueryItem("lon", str(point.x()))
query.addQueryItem("format", "json")
url = QUrl(self.URL)
url.setQuery(query)
request = QNetworkRequest(url)
request.setHeader(QNetworkRequest.UserAgentHeader,
"*****@*****.**")
response = self.nam.blockingGet(request)
self._status_code = response.attribute(
QNetworkRequest.HttpStatusCodeAttribute)
self._content = json.loads(bytes(response.content()))
if self._content.get("error"):
self._error_string = self._content["error"]
return
def get(self,
url: str,
params: dict = None,
timeout: int = 20000,
**kwargs) -> Reply:
'''
queries given url (GET)
Parameters
----------
url : str
the url to request
params : dict, optional
query parameters with the parameters as keys and the values as
values, defaults to no query parameters
timeout : int, optional
the timeout of synchronous requests in milliseconds, will be ignored
when making asynchronous requests, defaults to 20000 ms
**kwargs :
additional parameters matching the requests interface will
be ignored (e.g. verify is not supported)
Returns
----------
Reply
the response is returned in case of synchronous calls, if you are
using asynchronous calls retrieve the response via the finished-
signal instead
'''
qurl = QUrl(url)
if params:
query = QUrlQuery()
for param, value in params.items():
query.addQueryItem(param, str(value))
qurl.setQuery(query.query())
if self.synchronous:
return self._get_sync(qurl, timeout=timeout)
return self._get_async(qurl)
def test_real_wrong_request(self):
"""Test wrong request.
This is test is using internet.
"""
url = QUrl(OVERPASS_SERVERS[0])
query_string = QUrlQuery()
query_string.addQueryItem('data', 'fake_query')
url.setQuery(query_string)
overpass = ConnexionOAPI(url.toString())
self.assertListEqual(overpass.errors, [])
# We don't want the FileNotFoundError
try:
overpass.run()
except OverpassBadRequestException:
self.assertTrue(True)
except FileNotFoundError:
self.assertFalse(True)
else:
self.assertFalse(True)
self.assertEqual(len(overpass.errors), 1)
def _sendRequest(self, url, params, headers={}):
if self.asynchonous:
if self.reply is not None:
self.reply.finished.disconnect(self.reply_finished)
self.reply.abort()
self.reply = None
url = QUrl(url)
urlQuery = QUrlQuery(url)
for key, value in params.items():
urlQuery.addQueryItem(key, value)
QgsLogger.debug('Request: {}'.format(url.toEncoded()))
url.setQuery(urlQuery)
request = QNetworkRequest(url)
for key, value in headers.items():
request.setRawHeader(key, value)
self.reply = QgsNetworkAccessManager.instance().get(request)
else:
url = url + '?' + urllib.parse.urlencode(params)
response = urllib.request.urlopen(url)
data = json.load(response)
self.load_data(data)
def prepare_url(self):
"""Prepare a query to be as an URL.
:return: The URL encoded with the query.
:rtype: basestring
"""
if not self._query_prepared:
return ''
if self._output_format:
query = re.sub(r'output="[a-z]*"',
'output="%s"' % self._output_format,
self._query_prepared)
query = re.sub(r'\[out:[a-z]*', '[out:%s' % self._output_format,
query)
else:
query = self._query_prepared
url_query = QUrl(self._overpass)
query_string = QUrlQuery()
query_string.addQueryItem('data', query)
query_string.addQueryItem('info', 'QgisQuickOSMPlugin')
url_query.setQuery(query_string)
return url_query.toString()
def result(self, result):
# See if OK was pressed
if result:
project = QgsProject.instance()
# First get all the values of the GUI items
crs_input = self.dlg.crs_input.crs()
crs_out = QgsCoordinateReferenceSystem(
'EPSG:4326') # we need this to be WGS84 for Nominatim
lineedit_text = self.dlg.lineedit_xy.value()
# Protect the free text field for coordinates from generic user failure
try:
lineedit_yx = [
float(coord.strip()) for coord in lineedit_text.split(',')
]
except:
QMessageBox.critical(
self.iface.mainWindow(), 'QuickAPI error',
"Did you really specify a coordinate in comma-separated Lat/Long?\nExiting..."
)
return
# Create a Point and transform if necessary
point = QgsPointXY(*reversed(lineedit_yx))
if crs_input.authid() != 'EPSG:4326':
xform = QgsCoordinateTransform(crs_input, crs_out, project)
point_transform = xform.transform(point)
point = point_transform
# Set up the GET Request to Nominatim
query = QUrlQuery()
query.addQueryItem('lat', str(point.y()))
query.addQueryItem('lon', str(point.x()))
query.addQueryItem('format', 'json')
url = QUrl('https://nominatim.openstreetmap.org/reverse')
url.setQuery(query)
request = QNetworkRequest(url)
request.setHeader(QNetworkRequest.UserAgentHeader,
'*****@*****.**')
nam = QgsNetworkAccessManager()
response: QgsNetworkReplyContent = nam.blockingGet(request)
# Only process if HTTP status code is 200
status_code = response.attribute(
QNetworkRequest.HttpStatusCodeAttribute)
if status_code == 200:
# Get the content of the response and process it
response_json = json.loads(bytes(response.content()))
if response_json.get('error'):
QMessageBox.critical(
self.iface.mainWindow(), "Quick API error",
"The request was not processed succesfully!\n\n"
"Message:\n"
"{}".format(response_json['error']))
return
x = float(response_json['lon'])
y = float(response_json['lat'])
address = response_json['display_name']
license = response_json['licence']
# Create the output memory layer
layer_out = QgsVectorLayer(
"Point?crs=EPSG:4326&field=address:string&field=license:string",
"Nominatim Reverse Geocoding", "memory")
# Create the output feature (only one here)
point_out = QgsPointXY(x, y)
feature = QgsFeature()
feature.setGeometry(QgsGeometry.fromPointXY(point_out))
feature.setAttributes([address, license])
# Add feature to layer and layer to map
layer_out.dataProvider().addFeature(feature)
layer_out.updateExtents()
project.addMapLayer(layer_out)
# build bbox for auto-zoom feature
bbox = [float(coord) for coord in response_json['boundingbox']]
min_y, max_y, min_x, max_x = bbox
bbox_geom = QgsGeometry.fromRect(
QgsRectangle(min_x, min_y, max_x, max_y))
# Transform bbox if map canvas has a different CRS
if project.crs().authid() != 'EPSG:4326':
xform = QgsCoordinateTransform(crs_out, project.crs(),
project)
bbox_geom.transform(xform)
self.iface.mapCanvas().zoomToFeatureExtent(
QgsRectangle.fromWkt(bbox_geom.asWkt()))
