Added early version of libxml backend

Backend-libXML/server.py

@@ -0,0 +1,69 @@
+from flask import Flask
+from flask import request
+from lxml import etree
+import json
+import time
+import Parser
+
+
+app = Flask(__name__)
+
+@app.route("/xpath", methods=["POST"])
+def xpath():
+    request_data = request.get_json()
+    xml = request_data['data']
+    xpath = request_data['process']
+    
+    response = dict()
+    start = time.time_ns()
+    try:
+        response['result'] = Parser.xpath(xml, xpath)
+        response['status'] = "OK"
+    except BaseException as e:
+        response['result'] = str(e)
+        response['status'] = "ERR"
+    finally:
+        exec_time = (time.time_ns() - start) / 10**6
+        response['time'] = f"{exec_time:.03f}"
+        response['processor'] = "libxml2 over lxml"
+        return json.dumps(response)
+
+@app.route("/xsd", methods=["POST"])
+def xsd():
+    request_data = request.get_json()
+    xml = request_data['data']
+    xsd = request_data['process']
+
+    response = dict()
+    start = time.time_ns()
+    try:
+        response['result'] = Parser.xsd(xml, xsd)
+        response['status'] = "OK"
+    except BaseException as e:
+        response['result'] = str(e)
+        response['status'] = "ERR"
+    finally:
+        exec_time = (time.time_ns() - start) / 10**6
+        response['time'] = f"{exec_time:.03f}"
+        response['processor'] = "libxml2 over lxml"
+        return json.dumps(response)
+
+@app.route("/xslt", methods=["POST"])
+def xslt():
+    request_data = request.get_json()
+    xml = request_data['data']
+    xslt = request_data['process']
+
+    response = dict()
+    start = time.time_ns()
+    try:
+        response['result'] = Parser.xslt(xml, xslt)
+        response['status'] = "OK"
+    except BaseException as e:
+        response['result'] = str(e)
+        response['status'] = "ERR"
+    finally:
+        exec_time = (time.time_ns() - start) / 10**6
+        response['time'] = f"{exec_time:.03f}"
+        response['processor'] = "libxml2 over lxml"
+        return json.dumps(response)