J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package com.sun.jmx.snmp.agent; |
| 27 | |
| 28 | import java.io.Serializable; |
| 29 | import java.util.Enumeration; |
| 30 | import java.util.logging.Level; |
| 31 | |
| 32 | import javax.management.ObjectName; |
| 33 | import javax.management.MBeanServer; |
| 34 | |
| 35 | import static com.sun.jmx.defaults.JmxProperties.SNMP_ADAPTOR_LOGGER; |
| 36 | import com.sun.jmx.snmp.SnmpStatusException; |
| 37 | import com.sun.jmx.snmp.SnmpDefinitions; |
| 38 | import com.sun.jmx.snmp.SnmpVarBind; |
| 39 | |
| 40 | /** |
| 41 | * A simple MIB agent that implements SNMP calls (get, set, getnext and getbulk) in a way that only errors or exceptions are returned. Every call done on this agent fails. Error handling is done according to the manager's SNMP protocol version. |
| 42 | * <P>It is used by <CODE>SnmpAdaptorServer</CODE> for its default agent behavior. When a received Oid doesn't match, this agent is called to fill the result list with errors.</P> |
| 43 | * <p><b>This API is a Sun Microsystems internal API and is subject |
| 44 | * to change without notice.</b></p> |
| 45 | * @since 1.5 |
| 46 | * |
| 47 | */ |
| 48 | |
| 49 | public class SnmpErrorHandlerAgent extends SnmpMibAgent |
| 50 | implements Serializable { |
| 51 | private static final long serialVersionUID = 7751082923508885650L; |
| 52 | |
| 53 | public SnmpErrorHandlerAgent() {} |
| 54 | |
| 55 | /** |
| 56 | * Initializes the MIB (with no registration of the MBeans into the |
| 57 | * MBean server). Does nothing. |
| 58 | * |
| 59 | * @exception IllegalAccessException The MIB cannot be initialized. |
| 60 | */ |
| 61 | |
| 62 | public void init() throws IllegalAccessException { |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Initializes the MIB but each single MBean representing the MIB |
| 67 | * is inserted into the MBean server. |
| 68 | * |
| 69 | * @param server The MBean server to register the service with. |
| 70 | * @param name The object name. |
| 71 | * |
| 72 | * @return The passed name paramter. |
| 73 | * |
| 74 | * @exception java.lang.Exception |
| 75 | */ |
| 76 | |
| 77 | public ObjectName preRegister(MBeanServer server, ObjectName name) |
| 78 | throws Exception { |
| 79 | return name; |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Gets the root object identifier of the MIB. |
| 84 | * <P>The root object identifier is the object identifier uniquely |
| 85 | * identifying the MIB. |
| 86 | * |
| 87 | * @return The returned oid is null. |
| 88 | */ |
| 89 | |
| 90 | public long[] getRootOid() { |
| 91 | return null; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Processes a <CODE>get</CODE> operation. It will throw an exception for V1 requests or it will set exceptions within the list for V2 requests. |
| 96 | * |
| 97 | * @param inRequest The SnmpMibRequest object holding the list of variable to be retrieved. |
| 98 | * |
| 99 | * @exception SnmpStatusException An error occured during the operation. |
| 100 | */ |
| 101 | |
| 102 | public void get(SnmpMibRequest inRequest) throws SnmpStatusException { |
| 103 | |
| 104 | SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, |
| 105 | SnmpErrorHandlerAgent.class.getName(), |
| 106 | "get", "Get in Exception"); |
| 107 | |
| 108 | if(inRequest.getVersion() == SnmpDefinitions.snmpVersionOne) |
| 109 | throw new SnmpStatusException(SnmpStatusException.noSuchName); |
| 110 | |
| 111 | Enumeration l = inRequest.getElements(); |
| 112 | while(l.hasMoreElements()) { |
| 113 | SnmpVarBind varbind = (SnmpVarBind) l.nextElement(); |
| 114 | varbind.setNoSuchObject(); |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Checks if a <CODE>set</CODE> operation can be performed. |
| 120 | * If the operation can not be performed, the method should emit a |
| 121 | * <CODE>SnmpStatusException</CODE>. |
| 122 | * |
| 123 | * @param inRequest The SnmpMibRequest object holding the list of variables to |
| 124 | * be set. This list is composed of |
| 125 | * <CODE>SnmpVarBind</CODE> objects. |
| 126 | * |
| 127 | * @exception SnmpStatusException The <CODE>set</CODE> operation |
| 128 | * cannot be performed. |
| 129 | */ |
| 130 | |
| 131 | public void check(SnmpMibRequest inRequest) throws SnmpStatusException { |
| 132 | |
| 133 | SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, |
| 134 | SnmpErrorHandlerAgent.class.getName(), |
| 135 | "check", "Check in Exception"); |
| 136 | |
| 137 | throw new SnmpStatusException(SnmpDefinitions.snmpRspNotWritable); |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Processes a <CODE>set</CODE> operation. Should never be called (check previously called having failed). |
| 142 | * |
| 143 | * @param inRequest The SnmpMibRequest object holding the list of variable to be set. |
| 144 | * |
| 145 | * @exception SnmpStatusException An error occured during the operation. |
| 146 | */ |
| 147 | |
| 148 | public void set(SnmpMibRequest inRequest) throws SnmpStatusException { |
| 149 | |
| 150 | SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, |
| 151 | SnmpErrorHandlerAgent.class.getName(), |
| 152 | "set", "Set in Exception, CANNOT be called"); |
| 153 | |
| 154 | throw new SnmpStatusException(SnmpDefinitions.snmpRspNotWritable); |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Processes a <CODE>getNext</CODE> operation. It will throw an exception for V1 requests or it will set exceptions within the list for V2 requests.. |
| 159 | * |
| 160 | * @param inRequest The SnmpMibRequest object holding the list of variables to be retrieved. |
| 161 | * |
| 162 | * @exception SnmpStatusException An error occured during the operation. |
| 163 | */ |
| 164 | |
| 165 | public void getNext(SnmpMibRequest inRequest) throws SnmpStatusException { |
| 166 | |
| 167 | SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, |
| 168 | SnmpErrorHandlerAgent.class.getName(), |
| 169 | "getNext", "GetNext in Exception"); |
| 170 | |
| 171 | if(inRequest.getVersion() == SnmpDefinitions.snmpVersionOne) |
| 172 | throw new SnmpStatusException(SnmpStatusException.noSuchName); |
| 173 | |
| 174 | Enumeration l = inRequest.getElements(); |
| 175 | while(l.hasMoreElements()) { |
| 176 | SnmpVarBind varbind = (SnmpVarBind) l.nextElement(); |
| 177 | varbind.setEndOfMibView(); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Processes a <CODE>getBulk</CODE> operation. It will throw an exception if the request is a V1 one or it will set exceptions within the list for V2 ones. |
| 183 | * |
| 184 | * @param inRequest The SnmpMibRequest object holding the list of variable to be retrieved. |
| 185 | * |
| 186 | * @exception SnmpStatusException An error occured during the operation. |
| 187 | */ |
| 188 | |
| 189 | public void getBulk(SnmpMibRequest inRequest, int nonRepeat, int maxRepeat) |
| 190 | throws SnmpStatusException { |
| 191 | |
| 192 | SNMP_ADAPTOR_LOGGER.logp(Level.FINEST, |
| 193 | SnmpErrorHandlerAgent.class.getName(), |
| 194 | "getBulk", "GetBulk in Exception"); |
| 195 | |
| 196 | if(inRequest.getVersion() == SnmpDefinitions.snmpVersionOne) |
| 197 | throw new SnmpStatusException(SnmpDefinitions.snmpRspGenErr, 0); |
| 198 | |
| 199 | Enumeration l = inRequest.getElements(); |
| 200 | while(l.hasMoreElements()) { |
| 201 | SnmpVarBind varbind = (SnmpVarBind) l.nextElement(); |
| 202 | varbind.setEndOfMibView(); |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | } |