The LoadBalancer class manages a set of WebServers and dispatches incoming requests to them. More...

#include <LoadBalancer.h>

Public Member Functions
	LoadBalancer (int numServers, int numRequests, int maxServers, int requestThreshold, int maxIdle)
	Constructs a LoadBalancer with the specified number of servers and requests.

	~LoadBalancer ()
	Destructor for the LoadBalancer class, deletes all dynamically allocated servers.

void	create_requests ()
	Creates a new request with a 10% chance on each call and adds it to the request queue.

void	dispatch_requests ()
	Dispatches requests from the queue to available servers.

void	process_requests (int time)
	Processes requests on all servers for a given time unit.

void	adjust_servers ()
	Adjusts the number of servers based on the size of the request queue and server idle times.

Public Attributes
int	max_servers
	Maximum number of servers allowed.

int	request_threshold
	Threshold of request queue size to trigger server addition.

int	max_idle
	Maximum allowed idle time before a server is removed.

int	curr_idle
	Current count of idle servers.

std::queue< Request >	requests
	Queue of incoming requests to be processed.

std::vector< WebServer * >	servers
	List of active servers.

Detailed Description

The LoadBalancer class manages a set of WebServers and dispatches incoming requests to them.

This class handles the creation of new requests, dispatches them to available servers, processes the requests, and dynamically adjusts the number of servers based on load and idle time.

Constructor & Destructor Documentation

◆ LoadBalancer()

LoadBalancer::LoadBalancer	(	int	numServers,
		int	numRequests,
		int	maxServers,
		int	requestThreshold,
		int	maxIdle )

Constructs a LoadBalancer with the specified number of servers and requests.

Parameters

numServers	Initial number of servers.
numRequests	Initial number of requests to populate the request queue.
maxServers	Maximum number of servers allowed to be created.
requestThreshold	The threshold of requests to decide when to add more servers.
maxIdle	The maximum idle time allowed for servers before they are deallocated.

Member Function Documentation

◆ adjust_servers()

void LoadBalancer::adjust_servers ( )

Adjusts the number of servers based on the size of the request queue and server idle times.

Adds new servers if the request queue size exceeds the number of servers, up to the maximum server limit.
Deallocates (deletes) servers that have been idle for longer than the allowed maximum idle time.

◆ dispatch_requests()

void LoadBalancer::dispatch_requests ( )

Dispatches requests from the queue to available servers.

If a server is not busy and there are requests in the queue, the server is assigned the top request.

◆ process_requests()

void LoadBalancer::process_requests ( int time )

Processes requests on all servers for a given time unit.