org.transitime.api.utils

Class UsageValidator

java.lang.Object

org.transitime.api.utils.UsageValidator

public class UsageValidator
extends java.lang.Object

For making sure that use of API doesn't exceed limits. Intended to deal with bad applications that are requesting too much data or a denial of service attack. Currently simply checks to make sure that for a given request IP address that there aren't more than a certain number of requests per time frame.

This check should probably be refined in the future.

Note that a map is used to keep track of the last request times. Eventually this map could take up quite a bit of memory if old requests are never cleared out.

Author:

SkiBu Smith

Method Summary

Modifier and Type	Method and Description
static UsageValidator	getInstance() Get singleton instance.
void	validateUsage(StandardParameters stdParameters) Makes sure that usage doesn't exceed limits.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getInstance

public static UsageValidator getInstance()

Get singleton instance.

Returns:

validateUsage

public void validateUsage(StandardParameters stdParameters)
                   throws javax.ws.rs.WebApplicationException

Makes sure that usage doesn't exceed limits. Intended to deal with bad applications that are requesting too much data or a denial of service attack. Currently simply checks to make sure that for a given request IP address that there aren't more than a certain number of requests per time frame.

Probably should be refined in the future.

Parameters:

stdParameters -

Throws:

javax.ws.rs.WebApplicationException