eventwriter.java

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//
// This file is part of the OpenNMS(R) Application.
//
// OpenNMS(R) is Copyright (C) 2002-2003 The OpenNMS Group, Inc.  All rights reserved.
// OpenNMS(R) is a derivative work, containing both original code, included code and modified
// code that was published under the GNU General Public License. Copyrights for modified 
// and included code are below.
//
// OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
//
// Copyright (C) 1999-2001 Oculan Corp.  All rights reserved.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 for more details.                                                            
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//       
// For more information contact: 
//      OpenNMS Licensing       <[e-mail]>
//      http://www.opennms.org/
//      http://www.opennms.com/
//
// Tab Size = 8
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package org.opennms.netmgt.eventd;

import java.io.IOException;
import java.lang.reflect.UndeclaredThrowableException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.sql.Types;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;

import org.apache.log4j.Category;
import org.exolab.castor.xml.MarshalException;
import org.exolab.castor.xml.ValidationException;
import org.opennms.core.utils.ThreadCategory;
import org.opennms.netmgt.EventConstants;
import org.opennms.netmgt.config.DatabaseConnectionFactory;
import org.opennms.netmgt.eventd.db.AutoAction;
import org.opennms.netmgt.eventd.db.Constants;
import org.opennms.netmgt.eventd.db.OperatorAction;
import org.opennms.netmgt.eventd.db.Parameter;
import org.opennms.netmgt.eventd.db.SnmpInfo;
import org.opennms.netmgt.xml.event.Event;
import org.opennms.netmgt.xml.event.Header;
import org.opennms.netmgt.xml.event.Operaction;

/**
 * EventWriter loads the information in each 'Event' into the database.
 * 
 * While loading mutiple values of the same element into a single DB column, the
 * mutiple values are delimited by MULTIPLE_VAL_DELIM.
 * 
 * When an element and its attribute are loaded into a single DB column, the
 * value and the attribute are separated by a DB_ATTRIB_DELIM.
 * 
 * When using delimiters to append values, if the values already have the
 * delimiter, the delimiter in the value is escaped as in URLs.
 * 
 * Values for the ' <parms>' block are loaded with each parm name and parm value
 * delimited with the NAME_VAL_DELIM.
 * 
 * @see org.opennms.netmgt.eventd.db.Constants#MULTIPLE_VAL_DELIM
 * @see org.opennms.netmgt.eventd.db.Constants#DB_ATTRIB_DELIM
 * @see org.opennms.netmgt.eventd.db.Constants#NAME_VAL_DELIM
 * 
 * @author <A HREF="mailto:[e-mail]">Sowmya Nataraj </A>
 * @author <A HREF="http://www.opennms.org">OpenNMS.org </A>
 */
final class EventWriter {
    //
    // Field sizes in the events table
    //
    private static final int EVENT_UEI_FIELD_SIZE = 256;

    private static final int EVENT_HOST_FIELD_SIZE = 256;

    private static final int EVENT_INTERFACE_FIELD_SIZE = 16;

    private static final int EVENT_DPNAME_FIELD_SIZE = 12;

    private static final int EVENT_SNMPHOST_FIELD_SIZE = 256;

    private static final int EVENT_SNMP_FIELD_SIZE = 256;

    private static final int EVENT_DESCR_FIELD_SIZE = 4000;

    private static final int EVENT_LOGGRP_FIELD_SIZE = 32;

    private static final int EVENT_LOGMSG_FIELD_SIZE = 256;

    private static final int EVENT_PATHOUTAGE_FIELD_SIZE = 1024;

    private static final int EVENT_CORRELATION_FIELD_SIZE = 1024;

    private static final int EVENT_OPERINSTRUCT_FIELD_SIZE = 1024;

    private static final int EVENT_AUTOACTION_FIELD_SIZE = 256;

    private static final int EVENT_OPERACTION_FIELD_SIZE = 256;

    private static final int EVENT_OPERACTION_MENU_FIELD_SIZE = 64;

    private static final int EVENT_NOTIFICATION_FIELD_SIZE = 128;

    private static final int EVENT_TTICKET_FIELD_SIZE = 128;

    private static final int EVENT_FORWARD_FIELD_SIZE = 256;

    private static final int EVENT_MOUSEOVERTEXT_FIELD_SIZE = 64;

    private static final int EVENT_ACKUSER_FIELD_SIZE = 256;

    private static final int EVENT_SOURCE_FIELD_SIZE = 128;

    /**
     * The character to put in if the log or display is to be set to yes
     */
    private static char MSG_YES = 'Y';

    /**
     * The character to put in if the log or display is to be set to no
     */
    private static char MSG_NO = 'N';

    /**
     * The database connection
     */
    private Connection m_dbConn;

    /**
     * SQL statement to get service id for a service name
     */
    private PreparedStatement m_getSvcIdStmt;

    /**
     * SQL statement to get hostname for an ip from the ipinterface table
     */
    private PreparedStatement m_getHostNameStmt;

    /**
     * SQL statement to get next event id from sequence
     */
    private PreparedStatement m_getNextEventIdStmt;

    /**
     * SQL statement to get insert an event into the db
     */
    private PreparedStatement m_eventInsStmt;

    /**
     * Sets the statement up for a String value.
     * 
     * @param stmt
     *            The statement to add the value to.
     * @param ndx
     *            The ndx for the value.
     * @param value
     *            The value to add to the statement.
     * 
     * @exception java.sql.SQLException
     *                Thrown if there is an error adding the value to the
     *                statement.
     */
    private void set(PreparedStatement stmt, int ndx, String value) throws SQLException {
        if (value == null || value.length() == 0) {
            stmt.setNull(ndx, Types.VARCHAR);
        } else {
            stmt.setString(ndx, value);
        }
    }

    /**
     * Sets the statement up for an integer type. If the integer type is less
     * than zero, then it is set to null!
     * 
     * @param stmt
     *            The statement to add the value to.
     * @param ndx
     *            The ndx for the value.
     * @param value
     *            The value to add to the statement.
     * 
     * @exception java.sql.SQLException
     *                Thrown if there is an error adding the value to the
     *                statement.
     */
    private void set(PreparedStatement stmt, int ndx, int value) throws SQLException {
        if (value < 0) {
            stmt.setNull(ndx, Types.INTEGER);
        } else {
            stmt.setInt(ndx, value);
        }
    }

    /**
     * Sets the statement up for a timestamp type.
     * 
     * @param stmt
     *            The statement to add the value to.
     * @param ndx
     *            The ndx for the value.
     * @param value
     *            The value to add to the statement.
     * 
     * @exception java.sql.SQLException
     *                Thrown if there is an error adding the value to the
     *                statement.
     */
    private void set(PreparedStatement stmt, int ndx, Timestamp value) throws SQLException {
        if (value == null) {
            stmt.setNull(ndx, Types.TIMESTAMP);
        } else {
            stmt.setTimestamp(ndx, value);
        }
    }

    /**
     * Sets the statement up for a character value.
     * 
     * @param stmt
     *            The statement to add the value to.
     * @param ndx
     *            The ndx for the value.
     * @param value
     *            The value to add to the statement.
     * 
     * @exception java.sql.SQLException
     *                Thrown if there is an error adding the value to the
     *                statement.
     */
    private void set(PreparedStatement stmt, int ndx, char value) throws SQLException {
        stmt.setString(ndx, String.valueOf(value));
    }

    /**
     * This method is used to convert the service name into a service id. It
     * first looks up the information from a service map of Eventd and if no
     * match is found, by performing a lookup in the database. If the conversion
     * is successful then the corresponding integer identifier will be returned
     * to the caller.
     * 
     * @param name
     *            The name of the service
     * 
     * @return The integer identifier for the service name.
     * 
     * @exception java.sql.SQLException
     *                Thrown if there is an error accessing the stored data or
     *                the SQL text is malformed. This will also be thrown if the
     *                result cannot be obtained.
     * 
     * @see EventdConstants#SQL_DB_SVCNAME_TO_SVCID
     * 
     */
    private int getServiceID(String name) throws SQLException {
        //
        // Check the name to make sure that it is not null
        //
        if (name == null)
            throw new NullPointerException("The service name was null");

        // ask persistd
        //
        int id = Eventd.getServiceID(name);
        if (id != -1)
            return id;

        //
        // talk to the database and get the identifer
        //
        m_getSvcIdStmt.setString(1, name);
        ResultSet rset = m_getSvcIdStmt.executeQuery();
        if (rset.next()) {
            id = rset.getInt(1);
        }

        // close result set
        rset.close();

        // inform persistd about the new find
        //
        if (id != -1)
            Eventd.addServiceMapping(name, id);

        //
        // return the id to the caller
        //
        return id;
    }

    /**
     * This method is used to convert the event host into a hostname id by
     * performing a lookup in the database. If the conversion is successful then
     * the corresponding hosname will be returned to the caller.
     * 
     * @param hostip
     *            The event host
     * 
     * @return The hostname
     * 
     * @exception java.sql.SQLException
     *                Thrown if there is an error accessing the stored data or
     *                the SQL text is malformed.
     * 
     * @see EventdConstants#SQL_DB_HOSTIP_TO_HOSTNAME
     * 
     */
    private String getHostName(String hostip) throws SQLException {

        //
        // talk to the database and get the identifer
        //
        String hostname = hostip;

        m_getHostNameStmt.setString(1, hostip);
        ResultSet rset = m_getHostNameStmt.executeQuery();
        if (rset.next()) {
            hostname = rset.getString(1);
        }

        // close and free the result set
        //
        rset.close();

        // hostname can be null - if it is, return the ip
        //
        if (hostname == null)
            hostname = hostip;

        //
        // return the hostname to the caller
        //
        return hostname;
    }

    /**
     * Insert values into the EVENTS table
     *