Sensor Monitoring System

This repository contains the final project for the Operating Systems course in the Bachelor of Electronics/ICT program. The project involves creating a Sensor Monitoring System, which consists of client-side sensor nodes measuring room temperature and a central server-side sensor-gateway that acquires all sensor data from the sensor nodes.

Overview

The sensor gateway is comprised of a main process and a log process. The main process runs three threads at startup: the connection manager, the data manager, and the storage manager thread. A shared data structure (sbuffer) is used for communication between all threads. This project aims to ensure thread-safe access to shared data and implement the required functionality for each component of the sensor gateway.

Functionalities

1. Main Process and Log Process
   • The log process is started as a child process of the main process.
2. Threads in Main Process
   • The main process runs three threads: connection manager, data manager, and storage manager.
3. Shared Data Structure
   • Utilize the sbuffer module for communication between threads.
   • Ensure thread-safe read/write/update access to shared data.
4. Connection Manager
   • Listens on a TCP socket for incoming connection requests from sensor nodes.
   • Each client-side node has a dedicated thread for processing incoming data.
5. Data Manager
   • Implements server intelligence, reading sensor measurements from shared memory.
   • Reads room-sensor mapping from a text file.
   • Calculates running average temperature and makes decisions based on thresholds.
6. Storage Manager
   • Inserts sensor measurements into a CSV file (data.csv).
   • Creates a new data.csv file at startup.
7. Log Process
   • Receives log events from the main process using a pipe.
   • Writes log events to a log file (gateway.log).
   • Supports various log events from different components of the system.

Setup

1. Clone the repository: git clone <repository_url>
2. Compile the project: make
3. Run the server: ./server <port_number>

Usage

• Modify room_sensor.map to update room-sensor mappings.
• Adjust timeout settings in the Makefile if necessary.
• View log events in gateway.log for monitoring system activities.