basic

scripts/app.py

+import logging
+from flask import Flask,session
+
+from scripts.service.login_service import blueprint_object
+
+app = Flask(__name__)
+app.secret_key = 'super secret key'
+app.register_blueprint(blueprint_object)
+try:
+    if __name__ == '__main__':
+        app.run(port=8300)
+except Exception as e:
+    logging.exception("Exception occurred", exc_info=True)
+    print(e)

scripts/handler/login_handler.py

+import bcrypt
+
+from scripts.handler.utility import Mongo_utility
+
+# creating object for class in Utility
+utility_object = Mongo_utility()
+
+
+class Mongobd:
+    # method for inserting data into database
+    @staticmethod
+    def insert(data, username):
+        # connecting to database
+        register_details = utility_object.connection()
+        # find the data based on user_name in database
+        require_data = utility_object.finding(register_details, {"User Id": username})
+        flag = 0
+        # checking if user exists or not
+        if len(list(require_data)) == 0:
+            flag = 1
+        # if user not exists then inserting data to database
+        if flag == 1:
+            utility_object.insert(register_details, data)
+        return flag
+
+    # method for validating user data with database
+    @staticmethod
+    def find_query(username, password):
+        # connecting to database
+        register_details = utility_object.connection()
+
+        cursor_list = list(utility_object.finding(register_details, {"User Id": username}))
+
+        flag = 0
+        # checking if user exists or not
+        if len(cursor_list) != 0:
+            # if user exists then finding the password using username as query
+            cursor = utility_object.finding(register_details, {"User Id": username})
+            for key, value in cursor.next().items():
+                # validating user password with database password
+                # we use bcrypt.checkpw to compare hashed password
+                if key == "Password" and bcrypt.checkpw(password.encode('utf8'), value):
+                    flag = 1
+                    break
+        else:
+            flag = 2
+        return flag

scripts/handler/utility.py

+import logging
+
+from pymongo import MongoClient
+
+
+class Mongo_utility:
+    # method for connecting with database
+    @staticmethod
+    def connection():
+        try:
+            # database details
+            client = MongoClient('143.110.191.155', 37217)
+            # kranthi -> database name
+            database = client.kranthi
+            # register_details -> collection name
+            register_details = database.register_details
+            return register_details
+        except Exception:
+            logging.exception("Exception occurred in connection", exc_info=True)
+
+    @staticmethod
+    def insert(register_details, data):
+        try:
+            #  inserting data into database.
+            register_details.insert(data)
+        except Exception:
+            logging.exception("Exception occurred", exc_info=True)
+
+    @staticmethod
+    def finding(register_details, query):
+        try:
+            # finding data based on query
+            details = register_details.find(query)
+            return details
+        except Exception:
+            logging.exception("Exception occurred", exc_info=True)

scripts/service/login_service.py

+import logging
+
+import bcrypt
+from flask import Blueprint
+from flask import render_template, request, flash
+
+from scripts.handler.login_handler import Mongobd
+
+blueprint_object = Blueprint('example_blueprint', __name__)
+
+mongodb_object = Mongobd()
+
+try:
+    # To open login page
+    @blueprint_object.route('/login')
+    def message():
+        return render_template('login.html')
+
+
+    # To open registration page
+    @blueprint_object.route('/registration')
+    def message1():
+        return render_template('registration.html')
+
+
+    # To get registration details
+    @blueprint_object.route('/registration_data', methods=['POST'])
+    def input_values():
+        # collecting user details from registration.html
+        data = {"Name": request.form["name"], "Phone number": request.form["number"], "Mail id": request.form["mail"],
+                "User Id": request.form["user_id"],
+                "Password": bcrypt.hashpw((request.form["password"]).encode('utf8'), bcrypt.gensalt())}
+        # sending data to the database.
+        result = mongodb_object.insert(data, request.form["user_id"])
+        if result == 1:
+            # works when user is successfully register
+            flash("you have successfully register. you can login here :")
+            # It redirect to login page after successfully register
+            return render_template('login.html')
+        else:
+            # If user enter the same user Id already exists
+            error = "User id already exists"
+            # It redirect to registration page along with  error
+            return render_template('registration.html', error=error)
+
+
+    # To get login details
+    @blueprint_object.route('/login_data', methods=['POST'])
+    def required_values():
+        # sending the username,password for checking
+        result = mongodb_object.find_query(request.form["username"], request.form["pwd"])
+        if result == 1:
+            # work when login details are correct and redirect to website page
+            return render_template('login_success.html')
+        elif result == 2:
+            # work when user is new to website
+            error = "First Register here"
+            # It redirect to registration page along with error
+            return render_template('registration.html', error=error)
+        else:
+            # Works when user entered new password
+            error = "please enter correct password"
+            # It redirect to login page along with error
+            return render_template('login.html', error=error)
+
+
+except Exception as e:
+    logging.exception("Exception occurred in connection", exc_info=True)
+    print(e)

scripts/templates/login.html

+<!Doctype html>
+<html>
+<body style="background-color:powderblue;">
+ {% with messages = get_flashed_messages() %}
+         {% if messages %}
+               {% for message in messages %}
+                    <p>{{ message }}</p>
+               {% endfor %}
+         {% endif %}
+      {% endwith %}
+{% if error %}
+<p><strong>Error</strong>: {{error}}</p>
+{% endif %}
+<h1 align="center">Welcome To Knowledge Lens</h1>
+<h2 align="center">Login Page</h2>
+<form name="f1" action="login_data" method="post">
+    <table align="center" border="0" bgcolor="green" cellspacing="10" cellpadding="5">
+        <td>Username:</td>
+        <td><input type="text" size=25 name="username" required></td>
+        </tr></tr></tr>
+        <td>Password:</td>
+        <td><input type="Password" size=25 name="pwd" required></td>
+        </tr>
+        <tr>
+            <td><input type="submit" name="b1" value="login"></td>
+            <td>
+
+                <a href="registration">
+                    <input type="button" onclick="registration" value="Registration"> </a>
+            </td>
+    </table>
+</form>
+</body>
+</html>
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scripts/templates/login_success.html

+<!Doctype html>
+<html>
+<body style="background-color:powderblue;">
+<h1 align="center">welcome to Knowledge lens</h1>
+<h3>About us </h3>
+<h4>
+    Knowledge Lens is a US and India based product and services technology company that builds innovative solutions on
+    niche technology areas such as Big Data Analytics, Data Science, Artificial Intelligence, IoT, Blockchain, AR/VR and
+    Cloud.
+
+    We have successfully transformed companies into Smart Enterprises by implementing Next Generation Enterprise Data
+    Lakes, AI Powered Intelligent Apps and Industry 4.0 solutions both on premise and cloud.
+
+    Our mission is to discover intelligent insights from enterprise data and deliver business value to customers. We
+    have a technically strong team of 350+ experts working to add differentiated value to our customers. What truly sets
+    us apart is the use of a microservice-based architecture, to expand solution capabilities without disrupting
+    critical business activities. This enables us to provide user-focused, domain-specific software applications built
+    on cutting edge, adaptive technologies.</h4>
+
+
+<h3>Your Products:</h3>
+<h3>&nbsp; &nbsp; &nbsp; &nbsp; GLens</h3>
+<h4>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; GLens is Real-Time Data Acquisition, Monitoring and
+    Analytics suite of Products for Industrial Emissions, Effluent Discharges and Ambient Air Monitoring. GLens DAS
+    Software, GLens Server Platform, GLens Environ Data Logger provides a comprehensive solution for all Industry
+    Environmental needs.</h4>
+<h3>&nbsp; &nbsp; &nbsp; &nbsp; MLens</h3>
+<h4>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;MLens is an accelerator toolkit from Knowledge Lens which
+    enables Workload Migration, Cloud Data Management & Automated Disaster Recovery for Enterprise. We provide migration
+    utilities to migrate data, metadata & transform computational workloads in Hadoop environment to Databricks Unified
+    Analytics.</h4>
+<h3> &nbsp; &nbsp; &nbsp; &nbsp;ILens</h3>
+<h4> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;iLens is our premier Industrial IoT solution, addressing
+    Industry 4.0 demands with capabilities including Interface Connectivity, Edge Analytics and Predictive Analytics. We
+    are currently powering automation, manufacturing, energy and utility companies across the world.</h4>
+
+</body>
+</html>
\ No newline at end of file

scripts/templates/registration.html

+<!Doctype html>
+<html>
+<body style="background-color:powderblue;">
+{% with messages = get_flashed_messages() %}
+{% if messages %}
+<ul>
+    {% for message in messages %}
+    <li>{{ message }}</li>
+    {% endfor %}
+</ul>
+{% endif %}
+{% endwith %}
+{% if error %}
+<p><strong>Error</strong>: {{error}}</p>
+{% endif %}
+<h1 align="center">Welcome To Knowledge Lens</h1>
+<h2 align="center">REGISTRATION PAGE</h2>
+<form name="f1" action="registration_data" method="post">
+    <table align="center" border="0" bgcolor="green" cellspacing="10" cellpadding="5">
+        <tr>
+            <td>Name:</td>
+            <td><input type="text" name="name" size="15" required></td>
+        </tr>
+        <tr>
+            <td>Phone No:</td>
+            <td><input type="text" name="number" size="15" required></td>
+        </tr>
+        <tr>
+            <td>Mail id:</td>
+            <td><input type="email" name="mail" size="15" required></td>
+        </tr>
+        <tr>
+            <td>User id:</td>
+            <td><input type="text" name="user_id" size="15" required></td>
+        </tr>
+        <tr>
+            <td>Password:</td>
+            <td><input type="password" name="password" size="15" required></td>
+        </tr>
+        <tr>
+            <td><a href="registration_success"><input type="submit" onclick="login" value="Register"></a></td>
+        </tr>
+    </table>
+</form>
+</body>
+</html>
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