With QGIS 2.12 the new Python bindings for QGIS server are now available and the server can be invoked directly from a python scripts with just a few lines of code:
from qgis.server import QgsServer my_query_string = "map=/projects/my_project.qgs&SERVICE=WMS&request=GetCapabilities" headers, body = QgsServer().handleRequest(my_query_string)
Embedding QGIS in a Python web application
Embedding QGIS Server in a web application is now not only possible but really very easy, for example, a Django view:
# QGIS server view
from django.http import HttpResponse
from django.views.generic import View
from qgis.server import *
class OGC(View):
"""Pass a GET request to QGIS Server and return the response"""
def __init__(self):
self.server = QgsServer()
def get(self, request, *args, **kwargs):
"""Pass a GET request to QGIS Server and return the response"""
headers, body = self.server.handleRequest(request.GET.urlencode())
response = HttpResponse(body)
# Parse headers
for header in headers.split('\n'):
if header:
k, v = header.split(': ', 1)
response[k] = v
return response
Using server plugins
Of course Python server plugins can be plugged in easily, see the example below:
# QGIS server view
from django.http import HttpResponse
from django.views.generic import View
from qgis.server import *
from qgis.core import *
class OGC(View):
"""Pass a GET request to QGIS Server and return the response"""
def __init__(self):
self.server = QgsServer()
# Call init to create serverInterface
self.server.init()
serverIface = self.server.serverInterface()
class Filter1(QgsServerFilter):
def responseComplete(self):
QgsMessageLog.logMessage("Filter1.responseComplete", "Server", QgsMessageLog.INFO )
request = self.serverInterface().requestHandler()
if request.parameter('REQUEST') == 'HELLO':
request.clearHeaders()
request.setHeader('Content-type', 'text/plain')
request.clearBody()
request.appendBody('Hello from SimpleServer!')
def requestReady(self):
QgsMessageLog.logMessage("Filter1.requestReady")
self.filter = Filter1(serverIface)
serverIface.registerFilter(self.filter)
def get(self, request, *args, **kwargs):
"""Pass a GET request to QGIS Server and return the response"""
headers, body = self.server.handleRequest(request.GET.urlencode())
response = HttpResponse(body)
# Parse headers
for header in headers.split('\n'):
if header:
k, v = header.split(': ', 1)
response[k] = v
return response
Enjoy QGIS Server with Python!
