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/*
* Copyright 2014 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.cli.net;
import org.onlab.packet.IPv4;
import org.onlab.packet.IPv6;
/**
* Known protocol values for IP protocol field that can be supplied to the CLI.
*/
public enum IpProtocol {
/** ICMP. **/
ICMP(IPv4.PROTOCOL_ICMP),
/** TCP. **/
TCP(IPv4.PROTOCOL_TCP),
/** UDP. **/
UDP(IPv4.PROTOCOL_UDP),
/** ICMP6. **/
ICMP6(IPv6.PROTOCOL_ICMP6);
private short value;
/**
* Constructs an IpProtocol with the given value.
*
* @param value value to use when this IpProtocol is seen
*/
private IpProtocol(short value) {
this.value = value;
}
/**
* Gets the value to use for this IpProtocol.
*
* @return short value to use for this IpProtocol
*/
public short value() {
return this.value;
}
/**
* Parse a string input that could contain an IpProtocol value. The value
* may appear in the string either as a known protocol name (one of the
* values of this enum), or a numeric protocol value.
*
* @param input the input string to parse
* @return the numeric value of the parsed IP protocol
* @throws IllegalArgumentException if the input string does not contain a
* value that can be parsed into an IP protocol
*/
public static short parseFromString(String input) {
try {
return valueOf(input).value();
} catch (IllegalArgumentException e) {
// The input is not a known IP protocol name, let's see if it's an IP
// protocol value (byte). We parse with Short to handle unsigned values
// correctly.
try {
return Short.parseShort(input);
} catch (NumberFormatException e1) {
throw new IllegalArgumentException(
"IpProtocol value must be either a string protocol name"
+ " or an 8-bit protocol value");
}
}
}
}
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