org.snmp4j.agent.ProxyMap Maven / Gradle / Ivy
/*_############################################################################
_##
_## SNMP4J-Agent 2 - ProxyMap.java
_##
_## Copyright (C) 2005-2014 Frank Fock (SNMP4J.org)
_##
_## 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.snmp4j.agent;
import java.util.Map;
import org.snmp4j.smi.OctetString;
import java.util.TreeMap;
/**
* The ProxyMap maps context engine IDs in conjunction with a
* proxy usage type to a ProxyForwarder instance.
*
* @author Frank Fock
* @version 1.0
*/
public class ProxyMap {
private Map proxies = new TreeMap();
public ProxyMap() {
}
public ProxyForwarder add(ProxyForwarder proxyForwarder,
OctetString contextEngineID,
int proxyType) {
return this.proxies.put(new ProxyKey(contextEngineID, proxyType),
proxyForwarder);
}
public ProxyForwarder remove(OctetString contextEngineID,
int proxyType) {
return this.proxies.remove(new ProxyKey(contextEngineID, proxyType));
}
public ProxyForwarder get(OctetString contextEngineID,
int proxyType) {
ProxyForwarder proxy = this.proxies.get(new ProxyKey(contextEngineID, proxyType));
if (proxy == null) {
proxy = this.proxies.get(new ProxyKey(null, proxyType));
}
return proxy;
}
static class ProxyKey implements Comparable {
private OctetString contextEngineID;
private int proxyType;
ProxyKey(OctetString contextEngineID, int proxyType) {
this.contextEngineID = contextEngineID;
this.proxyType = proxyType;
}
public int compareTo(Object o) {
ProxyKey other = (ProxyKey)o;
if (((contextEngineID == null) && (other.contextEngineID != null)) ||
((other.contextEngineID == null) && (contextEngineID != null)) ||
((other.contextEngineID == null) && (contextEngineID == null)) ||
(contextEngineID.equals(other.contextEngineID))) {
if ((proxyType == ProxyForwarder.PROXY_TYPE_ALL) ||
(other.proxyType == ProxyForwarder.PROXY_TYPE_ALL)) {
return 0;
}
return (proxyType - other.proxyType);
}
return contextEngineID.compareTo(other.contextEngineID);
}
}
}