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// regarding copyright ownership. The ASF licenses this file
// to you 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
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// KIND, either express or implied. See the License for the
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package org.apache.cloudstack.alert.snmp;
import java.io.IOException;
import org.snmp4j.CommunityTarget;
import org.snmp4j.PDU;
import org.snmp4j.Snmp;
import org.snmp4j.mp.SnmpConstants;
import org.snmp4j.smi.OID;
import org.snmp4j.smi.OctetString;
import org.snmp4j.smi.UdpAddress;
import org.snmp4j.smi.UnsignedInteger32;
import org.snmp4j.smi.VariableBinding;
import org.snmp4j.transport.DefaultUdpTransportMapping;
import com.cloud.utils.exception.CloudRuntimeException;
public class SnmpHelper {
private Snmp _snmp;
private CommunityTarget _target;
public SnmpHelper(String address, String community) {
_target = new CommunityTarget();
_target.setCommunity(new OctetString(community));
_target.setVersion(SnmpConstants.version2c);
_target.setAddress(new UdpAddress(address));
try {
_snmp = new Snmp(new DefaultUdpTransportMapping());
} catch (IOException e) {
_snmp = null;
throw new CloudRuntimeException(" Error in crearting snmp object, " + e.getMessage());
}
}
public void sendSnmpTrap(SnmpTrapInfo snmpTrapInfo) {
try {
if (_snmp != null) {
_snmp.send(createPDU(snmpTrapInfo), _target, null, null);
}
} catch (IOException e) {
throw new CloudRuntimeException(" Error in sending SNMP Trap, " + e.getMessage());
}
}
private PDU createPDU(SnmpTrapInfo snmpTrapInfo) {
PDU trap = new PDU();
trap.setType(PDU.TRAP);
int alertType = snmpTrapInfo.getAlertType() + 1;
if (alertType > 0) {
trap.add(new VariableBinding(SnmpConstants.snmpTrapOID, getOID(CsSnmpConstants.TRAPS_PREFIX + alertType)));
if (snmpTrapInfo.getDataCenterId() != 0) {
trap.add(new VariableBinding(getOID(CsSnmpConstants.DATA_CENTER_ID), new UnsignedInteger32(snmpTrapInfo.getDataCenterId())));
}
if (snmpTrapInfo.getPodId() != 0) {
trap.add(new VariableBinding(getOID(CsSnmpConstants.POD_ID), new UnsignedInteger32(snmpTrapInfo.getPodId())));
}
if (snmpTrapInfo.getClusterId() != 0) {
trap.add(new VariableBinding(getOID(CsSnmpConstants.CLUSTER_ID), new UnsignedInteger32(snmpTrapInfo.getClusterId())));
}
if (snmpTrapInfo.getMessage() != null) {
trap.add(new VariableBinding(getOID(CsSnmpConstants.MESSAGE), new OctetString(snmpTrapInfo.getMessage())));
} else {
throw new CloudRuntimeException(" What is the use of alert without message ");
}
if (snmpTrapInfo.getGenerationTime() != null) {
trap.add(new VariableBinding(getOID(CsSnmpConstants.GENERATION_TIME), new OctetString(snmpTrapInfo.getGenerationTime().toString())));
} else {
trap.add(new VariableBinding(getOID(CsSnmpConstants.GENERATION_TIME)));
}
} else {
throw new CloudRuntimeException(" Invalid alert Type ");
}
return trap;
}
private OID getOID(String oidString) {
return new OID(oidString);
}
}