/** * Checks whether an SNMP SET request can be successfully performed. * * <p>For each variable in the subrequest, this method calls checkSetAccess() on the meta object, * and then tries to invoke the check<i>AttributeName</i>() method on the MBean. If this method is * not defined then it is assumed that the SET won't fail. * * <p><b><i> This method is called internally by <code>mibgen</code> generated objects and you * should never need to call it directly. </i></b> * * @param meta The metadata object impacted by the subrequest * @param name The ObjectName of the MBean impacted by this subrequest * @param req The SNMP subrequest to execute on the MBean * @param depth The depth of the SNMP object in the OID tree. * @exception SnmpStatusException if the requested SET operation must be rejected. Raising an * exception will abort the request. <br> * Exceptions should never be raised directly, but only by means of <code> * req.registerCheckException(<i>VariableId</i>,<i>SnmpStatusException</i>) * </code> */ public void check(SnmpGenericMetaServer meta, ObjectName name, 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 { final long id = var.oid.getOidArc(depth); // call meta.check() here, and meta.check will call check() check(meta, name, var.value, id, data); } catch (SnmpStatusException x) { req.registerCheckException(var, x); } } }
/** * Execute an SNMP GET request. * * <p>This method first builds the list of attributes that need to be retrieved from the MBean and * then calls getAttributes() on the MBean server. Then it updates the SnmpMibSubRequest with the * values retrieved from the MBean. * * <p>The SNMP metadata information is obtained through the given <code>meta</code> object, which * usually is an instance of a <code>mibgen</code> generated class. * * <p><b><i> This method is called internally by <code>mibgen</code> generated objects and you * should never need to call it directly. </i></b> * * @param meta The metadata object impacted by the subrequest * @param name The ObjectName of the MBean impacted by this subrequest * @param req The SNMP subrequest to execute on the MBean * @param depth The depth of the SNMP object in the OID tree. * @exception SnmpStatusException whenever an SNMP exception must be raised. Raising an exception * will abort the request.<br> * Exceptions should never be raised directly, but only by means of <code> * req.registerGetException(<i>VariableId</i>,<i>SnmpStatusException</i>) * </code> */ public void get(SnmpGenericMetaServer meta, ObjectName name, SnmpMibSubRequest req, int depth) throws SnmpStatusException { // java.lang.System.out.println(">>>>>>>>> GET " + name); final int size = req.getSize(); final Object data = req.getUserData(); final String[] nameList = new String[size]; final SnmpVarBind[] varList = new SnmpVarBind[size]; final long[] idList = new long[size]; int i = 0; for (Enumeration e = req.getElements(); e.hasMoreElements(); ) { final SnmpVarBind var = (SnmpVarBind) e.nextElement(); try { final long id = var.oid.getOidArc(depth); nameList[i] = meta.getAttributeName(id); varList[i] = var; idList[i] = id; // Check the access rights according to the MIB. // The MBean might be less restrictive (have a getter // while the MIB defines the variable as AFN) // meta.checkGetAccess(id, data); // java.lang.System.out.println(nameList[i] + " added."); i++; } catch (SnmpStatusException x) { // java.lang.System.out.println("exception for " + nameList[i]); // x.printStackTrace(); req.registerGetException(var, x); } } AttributeList result = null; int errorCode = SnmpStatusException.noSuchInstance; try { result = server.getAttributes(name, nameList); } catch (InstanceNotFoundException f) { // java.lang.System.out.println(name + ": instance not found."); // f.printStackTrace(); result = new AttributeList(); } catch (ReflectionException r) { // java.lang.System.out.println(name + ": reflexion error."); // r.printStackTrace(); result = new AttributeList(); } catch (Exception x) { result = new AttributeList(); } final Iterator it = result.iterator(); for (int j = 0; j < i; j++) { if (!it.hasNext()) { // java.lang.System.out.println(name + "variable[" + j + // "] absent"); final SnmpStatusException x = new SnmpStatusException(errorCode); req.registerGetException(varList[j], x); continue; } final Attribute att = (Attribute) it.next(); while ((j < i) && (!nameList[j].equals(att.getName()))) { // java.lang.System.out.println(name + "variable[" +j + // "] not found"); final SnmpStatusException x = new SnmpStatusException(errorCode); req.registerGetException(varList[j], x); j++; } if (j == i) break; try { varList[j].value = meta.buildSnmpValue(idList[j], att.getValue()); } catch (SnmpStatusException x) { req.registerGetException(varList[j], x); } // java.lang.System.out.println(att.getName() + " retrieved."); } // java.lang.System.out.println(">>>>>>>>> END GET"); }