Add the content type 'application/sparql-update' when preparing a SPARQL update request

rdflib/plugins/stores/sparqlconnector.py

@@ -87,6 +87,7 @@ def query(self, query, default_graph=None):
         if self.method == 'GET':
             args['params'].update(params)
         elif self.method == 'POST':
+            args['headers'].update({'Content-Type': 'application/sparql-query'})
             args['data'] = params
         else:
             raise SPARQLConnectorException("Unknown method %s" % self.method)
@@ -106,7 +107,10 @@ def update(self, update, default_graph=None):
         if default_graph:
             params["using-graph-uri"] = default_graph
 
-        headers = {'Accept': _response_mime_types[self.returnFormat]}
+        headers = {
+            'Accept': _response_mime_types[self.returnFormat],
+            'Content-Type': 'application/sparql-update',
+        }
 
         args = dict(self.kwargs)
 

test/test_sparqlstore.py

@@ -4,7 +4,10 @@
 import unittest
 from nose import SkipTest
 from requests import HTTPError
-
+from http.server import BaseHTTPRequestHandler, HTTPServer
+import socket
+from threading import Thread
+import requests
 
 try:
     assert len(urlopen("http://dbpedia.org/sparql").read()) > 0
@@ -67,5 +70,78 @@ def test_query_with_added_prolog(self):
             assert type(i[0]) == Literal, i[0].n3()
 
 
+class SPARQLStoreUpdateTestCase(unittest.TestCase):
+    def setUp(self):
+        port = self.setup_mocked_endpoint()
+        self.graph = Graph(store="SPARQLUpdateStore", identifier=URIRef("urn:ex"))
+        self.graph.open(("http://localhost:{port}/query".format(port=port),
+            "http://localhost:{port}/update".format(port=port)), create=False)
+        ns = list(self.graph.namespaces())
+        assert len(ns) > 0, ns
+
+    def setup_mocked_endpoint(self):
+        # Configure mock server.
+        s = socket.socket(socket.AF_INET, type=socket.SOCK_STREAM)
+        s.bind(('localhost', 0))
+        address, port = s.getsockname()
+        s.close()
+        mock_server = HTTPServer(('localhost', port), SPARQL11ProtocolStoreMock)
+
+        # Start running mock server in a separate thread.
+        # Daemon threads automatically shut down when the main process exits.
+        mock_server_thread = Thread(target=mock_server.serve_forever)
+        mock_server_thread.setDaemon(True)
+        mock_server_thread.start()
+        print("Started mocked sparql endpoint on http://localhost:{port}/".format(port=port))
+        return port
+
+    def tearDown(self):
+        self.graph.close()
+
+    def test_Query(self):
+        query = "insert data {<urn:s> <urn:p> <urn:o>}"
+        res = self.graph.update(query)
+        print(res)
+
+
+class SPARQL11ProtocolStoreMock(BaseHTTPRequestHandler):
+    def do_POST(self):
+        """
+        If the body should be analysed as well, just use:
+        ```
+        body = self.rfile.read(int(self.headers['Content-Length'])).decode()
+        print(body)
+        ```
+        """
+        contenttype = self.headers.get("Content-Type")
+        if self.path == "/query":
+            if self.headers.get("Content-Type") == "application/sparql-query":
+                pass
+            elif self.headers.get("Content-Type") == "application/x-www-form-urlencoded":
+                pass
+            else:
+                self.send_response(requests.codes.not_acceptable)
+                self.end_headers()
+        elif self.path == "/update":
+            if self.headers.get("Content-Type") == "application/sparql-update":
+                pass
+            elif self.headers.get("Content-Type") == "application/x-www-form-urlencoded":
+                pass
+            else:
+                self.send_response(requests.codes.not_acceptable)
+                self.end_headers()
+        else:
+            self.send_response(requests.codes.not_found)
+            self.end_headers()
+        self.send_response(requests.codes.ok)
+        self.end_headers()
+        return
+
+    def do_GET(self):
+        # Process an HTTP GET request and return a response with an HTTP 200 status.
+        self.send_response(requests.codes.ok)
+        self.end_headers()
+        return
+
 if __name__ == '__main__':
     unittest.main()