Java example source code file (SnmpStandardObjectServer.java)
The SnmpStandardObjectServer.java Java example source code
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* Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.jmx.snmp.agent;
// java imports
//
import java.io.Serializable;
import java.util.Enumeration;
import com.sun.jmx.snmp.SnmpVarBind;
import com.sun.jmx.snmp.SnmpStatusException;
// SNMP Runtime imports
//
/**
* <p>
* This class is a utility class that transform SNMP GET / SET requests
* into series of get<i>AttributeName() setAttributeName()
* invoked on the MBean.
* </p>
*
* <p>
* The transformation relies on the metadata information provided by the
* {@link com.sun.jmx.snmp.agent.SnmpStandardMetaServer} object which is
* passed as first parameter to every method. This SnmpStandardMetaServer
* object is usually a Metadata object generated by <code>mibgen.
* </p>
*
* <p>
* The MBean is not invoked directly by this class but through the
* metadata object which holds a reference on it.
* </p>
*
* <p>
* This class is used internally by mibgen generated metadata objects and
* you should never need to use it directly.
* </b>
* <p>This API is a Sun Microsystems internal API and is subject
* to change without notice.</b>
**/
public class SnmpStandardObjectServer implements Serializable {
private static final long serialVersionUID = -4641068116505308488L;
/**
* Generic handling of the <CODE>get operation.
* <p> The default implementation of this method is to loop over the
* varbind list associated with the sub-request and to call
* <CODE>get(var.oid.getOidArc(depth), data);
* <pre>
* public void get(SnmpStandardMetaServer meta, SnmpMibSubRequest req,
* int depth)
* throws SnmpStatusException {
*
* final Object data = req.getUserData();
*
* for (Enumeration e= req.getElements(); e.hasMoreElements();) {
*
* final SnmpVarBind var= (SnmpVarBind) e.nextElement();
*
* try {
* // This method will generate a SnmpStatusException
* // if `depth' is out of bounds.
* //
* final long id = var.oid.getOidArc(depth);
* var.value = meta.get(id, data);
* } catch(SnmpStatusException x) {
* req.registerGetException(var,x);
* }
* }
* }
* </pre>
* <p> You can override this method if you need to implement some
* specific policies for minimizing the accesses made to some remote
* underlying resources.
* <p>
*
* @param meta A pointer to the generated meta-data object which
* implements the <code>SnmpStandardMetaServer
* interface.
*
* @param req The sub-request that must be handled by this node.
*
* @param depth The depth reached in the OID tree.
*
* @exception SnmpStatusException An error occurred while accessing
* the MIB node.
*/
public void get(SnmpStandardMetaServer meta, SnmpMibSubRequest req,
int depth)
throws SnmpStatusException {
final Object data = req.getUserData();
for (Enumeration<SnmpVarBind> e= req.getElements(); e.hasMoreElements();) {
final SnmpVarBind var= e.nextElement();
try {
final long id = var.oid.getOidArc(depth);
var.value = meta.get(id, data);
} catch(SnmpStatusException x) {
req.registerGetException(var,x);
}
}
}
/**
* Generic handling of the <CODE>set operation.
* <p> The default implementation of this method is to loop over the
* varbind list associated with the sub-request and to call
* <CODE>set(var.value, var.oid.getOidArc(depth), data);
* <pre>
* public void set(SnmpStandardMetaServer meta, SnmpMibSubRequest req,
* int depth)
* throws SnmpStatusException {
*
* final Object data = req.getUserData();
*
* for (Enumeration e= req.getElements(); e.hasMoreElements();) {
*
* final SnmpVarBind var= (SnmpVarBind) e.nextElement();
*
* try {
* // This method will generate a SnmpStatusException
* // if `depth' is out of bounds.
* //
* final long id = var.oid.getOidArc(depth);
* var.value = meta.set(var.value, id, data);
* } catch(SnmpStatusException x) {
* req.registerSetException(var,x);
* }
* }
* }
* </pre>
* <p> You can override this method if you need to implement some
* specific policies for minimizing the accesses made to some remote
* underlying resources.
* <p>
*
* @param meta A pointer to the generated meta-data object which
* implements the <code>SnmpStandardMetaServer
* interface.
*
* @param req The sub-request that must be handled by this node.
*
* @param depth The depth reached in the OID tree.
*
* @exception SnmpStatusException An error occurred while accessing
* the MIB node.
*/
public void set(SnmpStandardMetaServer meta, SnmpMibSubRequest req,
int depth)
throws SnmpStatusException {
final Object data = req.getUserData();
for (Enumeration<SnmpVarBind> e= req.getElements(); e.hasMoreElements();) {
SnmpVarBind var = e.nextElement();
try {
// This method will generate a SnmpStatusException
// if `depth' is out of bounds.
//
final long id = var.oid.getOidArc(depth);
var.value = meta.set(var.value, id, data);
} catch(SnmpStatusException x) {
req.registerSetException(var,x);
}
}
}
/**
* Generic handling of the <CODE>check operation.
* <p> The default implementation of this method is to loop over the
* varbind list associated with the sub-request and to call
* <CODE>check(var.value, var.oid.getOidArc(depth), data);
* <pre>
* public void check(SnmpStandardMetaServer meta, SnmpMibSubRequest req,
* int depth)
* throws SnmpStatusException {
*
* final Object data = req.getUserData();
*
* for (Enumeration e= req.getElements(); e.hasMoreElements();) {
*
* final SnmpVarBind var= (SnmpVarBind) e.nextElement();
*
* try {
* // This method will generate a SnmpStatusException
* // if `depth' is out of bounds.
* //
* final long id = var.oid.getOidArc(depth);
* meta.check(var.value, id, data);
* } catch(SnmpStatusException x) {
* req.registerCheckException(var,x);
* }
* }
* }
* </pre>
* <p> You can override this method if you need to implement some
* specific policies for minimizing the accesses made to some remote
* underlying resources, or if you need to implement some consistency
* checks between the different values provided in the varbind list.
* <p>
*
* @param meta A pointer to the generated meta-data object which
* implements the <code>SnmpStandardMetaServer
* interface.
*
* @param req The sub-request that must be handled by this node.
*
* @param depth The depth reached in the OID tree.
*
* @exception SnmpStatusException An error occurred while accessing
* the MIB node.
*/
public void check(SnmpStandardMetaServer meta, SnmpMibSubRequest req,
int depth)
throws SnmpStatusException {
final Object data = req.getUserData();
for (Enumeration<SnmpVarBind> e= req.getElements(); e.hasMoreElements();) {
final SnmpVarBind var = e.nextElement();
try {
// This method will generate a SnmpStatusException
// if `depth' is out of bounds.
//
final long id = var.oid.getOidArc(depth);
meta.check(var.value,id,data);
} catch(SnmpStatusException x) {
req.registerCheckException(var,x);
}
}
}
}
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