base.jee.api.cassandra.GetLocationByIP Maven / Gradle / Ivy

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/**
 * Creative commons Attribution-NonCommercial license.
 *
 * http://creativecommons.org/licenses/by-nc/2.5/au/deed.en_GB
 *
 * NO WARRANTY IS GIVEN OR IMPLIED, USE AT YOUR OWN RISK.
 */
package base.jee.api.cassandra;

import base.Query;
import base.jee.api.model.Location;
import base.security.PermissionException;
import com.datastax.driver.core.Session;

import java.io.IOException;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import static base.jee.api.cassandra.util.IpLocation.ipLocation;
import static base.jee.Constants.MAX_IP_ADDRESS_LENGTH;

public class GetLocationByIP extends Query {

	private CassandraAPI api;
	private String ip;

	public GetLocationByIP() {
	}

	public GetLocationByIP(CassandraAPI api, String ip) throws PermissionException {

		if(api == null) {
			throw new IllegalArgumentException("Invalid parameter: api");
		}
		if(ip == null || ip.length() > MAX_IP_ADDRESS_LENGTH) {
			throw new IllegalArgumentException("Invalid IP address.");
		}

		this.api = api;
		this.ip = ip;
	}

	@Override
	public Query newWithParameters(Map parameters) throws PermissionException {
		return new GetLocationByIP(
				(CassandraAPI)parameters.get("api"),
				(String)parameters.get("ip"));
	}

	public List execute() throws IOException {
		List results = new LinkedList<>();
		Session s = api.getCassandraSession();

		Location l = ipLocation(s, ip);
		if(l != null) {
			results.add(l);
		}

		return results;
	}

	@Override
	public String getJsonParameters() {
		return "{" +
				"\"ip\":\"" + ip + "\"" +
				"}";
	}

}