com.adventnet.snmp.mibs.agent
Class SnmpDBAdaptor

java.lang.Object
  com.adventnet.snmp.snmp2.agent.SimpleRequestHandler
      com.adventnet.snmp.mibs.agent.SnmpDBAdaptor

All Implemented Interfaces:

VarBindRequestListener, AgentEventListener

public class SnmpDBAdaptor
extends SimpleRequestHandler

SnmpDBAdaptor class is used to implement the database adaptor bean. The associated requests are converted to SQL queries.

This class extends SimpleRequestHandler

See Also:

SimpleRequestHandler

Field Summary

(package private) static int	_QUERY
(package private) static int	_UPDATE
(package private) boolean	getNextFlag
(package private) JDBCAdapter	jdbc
(package private) com.adventnet.snmp.mibs.AgentMibOperations	mibOps
(package private) boolean	msAccessDb
(package private) boolean	mysqlDb
(package private) boolean	oracleDb
(package private) java.lang.String	registeredOid
(package private) boolean	tableNameIsNull

Fields inherited from class com.adventnet.snmp.snmp2.agent.SimpleRequestHandler

instrumentHandler, listener, tableListener

Constructor Summary

SnmpDBAdaptor()
constructor creates JDBCAdapter and initializes with default arguments.

Method Summary

void	addRegistrationListener(RegistrationListener rl) This method is called by BeanInfo for adding Registration Listener with PduRequestHandler
com.adventnet.snmp.mibs.AgentMibOperations	getAgentMibOperations() Getter for AgentMibOperations.
java.lang.Integer	getColumnProperty(java.lang.String columnName) This method can be used to get the maximum length for a column value.
java.lang.String	getDriverName() get the driverName.
java.lang.String	getMibFiles() getter for the mib file name(s) for which this bean aware of.
int[]	getOidRep() Retrives the integer representation of OID
java.lang.String	getPassword() get the password.
java.lang.String	getRegisteredOid() getter for the OID which needs to be proxied.
int[]	getSubidList() Gets the subid list of the oid.
java.lang.String	getTableName() getter for the tablename in the database to which the queries are made for the snmp request.
java.lang.String[]	getUrlList() get the urlList.
java.lang.String	getUserName() get the userName.
protected void	processGetNextRequest(SnmpVarBind varb, AgentNode node, VarBindRequestEvent pe) This handles the get next requests from the manager.
protected void	processGetRequest(SnmpVarBind varb, AgentNode node, VarBindRequestEvent pe) This handles the get requests from the manager.
protected void	processSetRequest(SnmpVarBind varb, AgentNode node, VarBindRequestEvent pe) This handles the set requests from the manager.
void	removeRegistrationListener(RegistrationListener rl) This method is called by BeanInfo for removing Registration Listener from PduRequestHandler
void	setAgentMibOperations(com.adventnet.snmp.mibs.AgentMibOperations mibs) setter for AgentMibOperations.
void	setColumnProperty(java.lang.String columnName, java.lang.Integer maxLength) This method can be used to set the maximum length for a column value.
void	setDataBase(java.lang.String dataBase) To set the DataBase where the Table values are stored.
void	setDriverName(java.lang.String driverName) set the driverName.
void	setMibFiles(java.lang.String mibFiles) setter for the mib file name(s) for which this bean aware of.
void	setPassword(java.lang.String password) set the password.
void	setRegisteredOid(java.lang.String oid) setter for the OID which needs to be proxied.
void	setScalarProperties(java.lang.String url, java.lang.String userName, java.lang.String passwd, java.lang.String driverName, java.lang.String getStatement, java.lang.String setStatement, java.lang.String scalarOid, java.lang.String scalarName, java.lang.String scalarType, int scalarAccess) This method will be useful in database access through SNMP for the specified scalar object.
void	setSqlGetForScalar(java.lang.String sqlGetForScalar) setter for the Sql get statement for scalar objects.
void	setSqlSetForScalar(java.lang.String sqlSetForScalar) setter for the Sql get statement for scalar objects.
void	setTableName(java.lang.String tableName) setter for the tablename in the database to which the queries are made for the snmp request.
void	setTableProperties(java.lang.String url, java.lang.String userName, java.lang.String passwd, java.lang.String driverName, java.lang.String tableName, java.lang.String entryOID, java.lang.String[] columnNames, java.lang.String[] types, int[] access, int[] subidList, java.lang.String[] indexNames) This method will be useful in making database table SNMP accessible.
void	setTableProperties(java.lang.String url, java.lang.String userName, java.lang.String passwd, java.lang.String driverName, java.lang.String tableName, java.lang.String entryOID, java.lang.String[] columnNames, java.lang.String[] types, int[] access, int[] subidList, java.lang.String[] indexNames, java.lang.String[] externalmoduleName)
void	setUrlList(java.lang.String[] urlList) set the urlList.
void	setUserName(java.lang.String userName) set the userName.

Methods inherited from class com.adventnet.snmp.snmp2.agent.SimpleRequestHandler

addInstrumentHandler, addTableListener, addUpdateListener, getInstrument, getMibVarHash, getNextRequest, getNextRequest, getObjectHash, getObjectTypeHash, getRequest, getTableListener, getUpdateListener, isWriteEachTime, processGetNextRequest, processGetRequest, processSetRequest, removeUpdateListener, setRequest, setWriteEachTime, writeIntoFile

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_QUERY

static final int _QUERY

See Also:

Constant Field Values

_UPDATE

static final int _UPDATE

See Also:

Constant Field Values

registeredOid

java.lang.String registeredOid

jdbc

JDBCAdapter jdbc

oracleDb

boolean oracleDb

mysqlDb

boolean mysqlDb

msAccessDb

boolean msAccessDb

mibOps

com.adventnet.snmp.mibs.AgentMibOperations mibOps

tableNameIsNull

boolean tableNameIsNull

getNextFlag

boolean getNextFlag

Constructor Detail

SnmpDBAdaptor

public SnmpDBAdaptor()

constructor creates JDBCAdapter and initializes with default arguments. calls SimpleRequestHandler no argument constructor.

See Also:

SimpleRequestHandler

Method Detail

setRegisteredOid

public void setRegisteredOid(java.lang.String oid)

setter for the OID which needs to be proxied.

Parameters:

oid - value of the OID

See Also:

()

getRegisteredOid

public java.lang.String getRegisteredOid()

getter for the OID which needs to be proxied.

Returns:

the value of OID

See Also:

setRegisteredOid()

setTableName

public void setTableName(java.lang.String tableName)

setter for the tablename in the database to which the queries are made for the snmp request.

See Also:

getTableName()

getTableName

public java.lang.String getTableName()

getter for the tablename in the database to which the queries are made for the snmp request.

See Also:

setTableName()

setSqlGetForScalar

public void setSqlGetForScalar(java.lang.String sqlGetForScalar)

setter for the Sql get statement for scalar objects.

See Also:

setSqlSetForScalar()

setSqlSetForScalar

public void setSqlSetForScalar(java.lang.String sqlSetForScalar)

setter for the Sql get statement for scalar objects.

See Also:

setSqlGetForScalar()

getUrlList

public java.lang.String[] getUrlList()

get the urlList.

See Also:

setUrlList()

setUrlList

public void setUrlList(java.lang.String[] urlList)

set the urlList.

See Also:

getUrlList()

getDriverName

public java.lang.String getDriverName()

get the driverName.

See Also:

setDriverName()

setDriverName

public void setDriverName(java.lang.String driverName)

set the driverName.

See Also:

getDriverName()

getUserName

public java.lang.String getUserName()

get the userName.

See Also:

setUsrName()

setUserName

public void setUserName(java.lang.String userName)

set the userName.

See Also:

getUsrName()

getPassword

public java.lang.String getPassword()

get the password.

See Also:

setPassword()

setPassword

public void setPassword(java.lang.String password)

set the password.

See Also:

getPassword()

setDataBase

public void setDataBase(java.lang.String dataBase)

To set the DataBase where the Table values are stored. Sql Statements are formed based on this.

getAgentMibOperations

public com.adventnet.snmp.mibs.AgentMibOperations getAgentMibOperations()

Getter for AgentMibOperations.

See Also:

setAgentMibOperations()

setAgentMibOperations

public void setAgentMibOperations(com.adventnet.snmp.mibs.AgentMibOperations mibs)

setter for AgentMibOperations.

See Also:

getAgentMibOperations()

getMibFiles

public java.lang.String getMibFiles()

getter for the mib file name(s) for which this bean aware of.

setMibFiles

public void setMibFiles(java.lang.String mibFiles)

setter for the mib file name(s) for which this bean aware of.

addRegistrationListener

public void addRegistrationListener(RegistrationListener rl)

This method is called by BeanInfo for adding Registration Listener with PduRequestHandler

Overrides:

addRegistrationListener in class SimpleRequestHandler

Parameters:

rl - the registration listener for an OID.

See Also:

removeRegistrationListener()

removeRegistrationListener

public void removeRegistrationListener(RegistrationListener rl)

This method is called by BeanInfo for removing Registration Listener from PduRequestHandler

Overrides:

removeRegistrationListener in class SimpleRequestHandler

Parameters:

rl - the registration listener for an OID.

See Also:

addRegistrationListener()

setColumnProperty

public void setColumnProperty(java.lang.String columnName,
                              java.lang.Integer maxLength)

This method can be used to set the maximum length for a column value.

Parameters:

columnName - The name of the column

maxLength - The maximum length of the column value

getColumnProperty

public java.lang.Integer getColumnProperty(java.lang.String columnName)

This method can be used to get the maximum length for a column value.

Parameters:

columnName - The name of the column

Returns:

The maximum length of the column value in the database

processGetRequest

protected void processGetRequest(SnmpVarBind varb,
                                 AgentNode node,
                                 VarBindRequestEvent pe)
                          throws AgentSnmpException

This handles the get requests from the manager.

It overrides the method in com.adventnet.snmp.snmp2.agent.SimpleRequestHandler.java

Overrides:

processGetRequest in class SimpleRequestHandler

Parameters:

varb - The received varbind .

node - The node for which Get Request is to be done.

pe - The VarBind Request Event created by this Get request.

Throws:

AgentSnmpException - This wraps all the Exceptions thrown while Processing the Event.

processGetNextRequest

protected void processGetNextRequest(SnmpVarBind varb,
                                     AgentNode node,
                                     VarBindRequestEvent pe)
                              throws AgentSnmpException

This handles the get next requests from the manager.

It overrides the method in com.adventnet.snmp.snmp2.agent.SimpleRequestHandler.java

Overrides:

processGetNextRequest in class SimpleRequestHandler

Parameters:

varb - The received varbind.

node - The node for which Get Next Request is to be done.

pe - The VarBind Request Event created by this GetNext request.

Throws:

AgentSnmpException - This wraps all the Exceptions thrown while Processing the Event.

processSetRequest

protected void processSetRequest(SnmpVarBind varb,
                                 AgentNode node,
                                 VarBindRequestEvent pe)
                          throws AgentSnmpException

This handles the set requests from the manager.

It overrides the method in com.adventnet.snmp.snmp2.agent.SimpleRequestHandler.java

Overrides:

processSetRequest in class SimpleRequestHandler

Parameters:

varb - The received varbind.

node - The node for which Get Next Request is to be done.

pe - The VarBind Request Event created by this GetNext request.

Throws:

AgentSnmpException - This wraps all the Exceptions thrown while Processing the Event.

setTableProperties

public void setTableProperties(java.lang.String url,
                               java.lang.String userName,
                               java.lang.String passwd,
                               java.lang.String driverName,
                               java.lang.String tableName,
                               java.lang.String entryOID,
                               java.lang.String[] columnNames,
                               java.lang.String[] types,
                               int[] access,
                               int[] subidList,
                               java.lang.String[] indexNames)

This method will be useful in making database table SNMP accessible. The various properties of the database and table are passed as the argument to this method. The code snippet for usage of this method is :

SnmpDBAdaptor dbAdaptor1 = new SnmpDBAdaptor();

dbAdaptor1.setTableProperties(

 "jdbc:odbc:Elections_DB",
 "user",
 "passwd",
 "sun.jdbc.odbc.JdbcOdbcDriver",
 "ElectionResultsTable",
 ".1.3.6.1.4.1.2162.4.9.1.1",
 new String[]{"electionResultsId", "candidate", "percentage", "electoral"},
 new String[]{"INTEGER", "DisplayString", "INTEGER", "INTEGER"},
 new int[]{SnmpAPI.RONLY, SnmpAPI.RWRITE, SnmpAPI.RWRITE, SnmpAPI.RWRITE},
 new int[]{1,2,3,4},
 new String[]{"electionResultsId"}
 

);

dbAdaptor1.addRegistrationListener(hdlr);//hdlr is the RegistrationListener(PduRequestHandler)//

The above code allows us to register a database table for SNMP access.

Parameters:

url - the URL of the database

userName - the user name for the database access.

passwd - the password for the database access.

driverName - the name of the driver

tableName - the name of the table in the database

entryOID - the entry level OID of the table defined in the MIB relevant to the database table.

columnName - the string array specifying the name of the columns present in the table.

types - the string array specifying the SNMP data types of the columns respectively.

acces - the string array specifying the access of the column as specified by the static values in the class com.adventnet.snmp.snmp2.SnmpAPI

subidList - the subid's of the columns.

indexNames - the string array specifying the column names which are indexed for the table.

setTableProperties

public void setTableProperties(java.lang.String url,
                               java.lang.String userName,
                               java.lang.String passwd,
                               java.lang.String driverName,
                               java.lang.String tableName,
                               java.lang.String entryOID,
                               java.lang.String[] columnNames,
                               java.lang.String[] types,
                               int[] access,
                               int[] subidList,
                               java.lang.String[] indexNames,
                               java.lang.String[] externalmoduleName)

setScalarProperties

public void setScalarProperties(java.lang.String url,
                                java.lang.String userName,
                                java.lang.String passwd,
                                java.lang.String driverName,
                                java.lang.String getStatement,
                                java.lang.String setStatement,
                                java.lang.String scalarOid,
                                java.lang.String scalarName,
                                java.lang.String scalarType,
                                int scalarAccess)

This method will be useful in database access through SNMP for the specified scalar object. The various properties of the database and SQL command are passed as the argument to this method. The code snippet for usage of this method is :

SnmpDBAdaptor dbAdaptor1 = new SnmpDBAdaptor();

dbAdaptor1.setScalarTableProperties(

 "jdbc:odbc:Elections_DB",
 "user",
 "passwd",
 "sun.jdbc.odbc.JdbcOdbcDriver",
 "select sysdescr from admin_topoobject where name='Sudhir'",
 "update admin_topoobject set sysdescr = $value where name='Sudhir'",
 ".1.3.6.1.4.1.2162.4.9.5",
 "acreateTable",
 "DisplayString",
 SnmpAPI.RWRITE
 

);

dbAdaptor1.addRegistrationListener(hdlr);//hdlr is the RegistrationListener(PduRequestHandler)//

The above code allows us to register a database for SNMP access.

Parameters:

url - the URL of the database

userName - the user name for the database access.

passwd - the password for the database access.

driverName - the name of the driver

getStatement - the SQL statement for this scalar object which should be executed when a SNMP get request is made on this scalar object(i.e for the specified OID)

setStatement - the SQL statement for this scalar object which should be executed when a SNMP set request is made on this scalar object(i.e for the specified OID). The value sent during the SET is substitued for the $value and the SQL query is executed.

tableName - the name of the table in the database

scalarOid - the OID of the scalar defined in the MIB.

scalarName - the string specifying the name of the scalar object.

scalarType - the string specifying the SNMP data type of the scalar object.

scalarAcces - the string specifying the access of the scalar as specified by the static values in the class com.adventnet.snmp.snmp2.SnmpAPI

getOidRep

public int[] getOidRep()

Description copied from class: SimpleRequestHandler

Retrives the integer representation of OID

Overrides:

getOidRep in class SimpleRequestHandler

Returns:

the integer array of OID

getSubidList

public int[] getSubidList()

Gets the subid list of the oid.

Overrides:

getSubidList in class SimpleRequestHandler

Returns:

the integer array of subid list