org.graylog2.utilities.IPSubnetConverter Maven / Gradle / Ivy
/*
* Copyright (C) 2020 Graylog, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* .
*/
package org.graylog2.utilities;
import com.github.joschi.jadconfig.Converter;
import com.github.joschi.jadconfig.ParameterException;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import java.net.UnknownHostException;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* Converts a comma separated list of IP addresses / sub nets to set of {@link IpSubnet}.
*/
public class IPSubnetConverter implements Converter> {
@Override
public Set convertFrom(String value) {
final Set converted = new LinkedHashSet<>();
if (value != null) {
Iterable subnets = Splitter.on(',').trimResults().split(value);
for (String subnet : subnets) {
try {
converted.add(new IpSubnet(subnet));
} catch (UnknownHostException e) {
throw new ParameterException("Invalid subnet: " + subnet);
}
}
}
return converted;
}
@Override
public String convertTo(Set value) {
if (value == null) {
throw new ParameterException("Couldn't convert IP subnets to string.");
}
return Joiner.on(",").skipNulls().join(value);
}
}