/*******************************************************************************
* This file is part of OpenNMS(R).
*
* Copyright (C) 2009-2011 The OpenNMS Group, Inc.
* OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
*
* OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
*
* OpenNMS(R) 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 3 of the License,
* or (at your option) any later version.
*
* OpenNMS(R) 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 OpenNMS(R). If not, see:
* http://www.gnu.org/licenses/
*
* For more information contact:
* OpenNMS(R) Licensing <license@opennms.org>
* http://www.opennms.org/
* http://www.opennms.com/
*******************************************************************************/
package org.opennms.netmgt.config;
import static org.opennms.core.utils.InetAddressUtils.addr;
import static org.opennms.core.utils.InetAddressUtils.isInetAddressInRange;
import static org.opennms.core.utils.InetAddressUtils.toIpAddrBytes;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.exolab.castor.xml.MarshalException;
import org.exolab.castor.xml.Marshaller;
import org.exolab.castor.xml.ValidationException;
import org.opennms.core.utils.ByteArrayComparator;
import org.opennms.core.utils.IpListFromUrl;
import org.opennms.core.utils.ThreadCategory;
import org.opennms.core.xml.CastorUtils;
import org.opennms.netmgt.config.snmpinterfacepoller.CriticalService;
import org.opennms.netmgt.config.snmpinterfacepoller.ExcludeRange;
import org.opennms.netmgt.config.snmpinterfacepoller.IncludeRange;
import org.opennms.netmgt.config.snmpinterfacepoller.Interface;
import org.opennms.netmgt.config.snmpinterfacepoller.Package;
import org.opennms.netmgt.config.snmpinterfacepoller.SnmpInterfacePollerConfiguration;
import org.opennms.netmgt.filter.FilterDaoFactory;
/**
* <p>Abstract SnmpInterfacePollerConfigManager class.</p>
*
* @author <a href="mailto:brozow@openms.org">Mathew Brozowski</a>
* @author <a href="mailto:david@opennms.org">David Hustace</a>
* @author <a href="mailto:brozow@openms.org">Mathew Brozowski</a>
* @author <a href="mailto:david@opennms.org">David Hustace</a>
* @version $Id: $
*/
abstract public class SnmpInterfacePollerConfigManager implements SnmpInterfacePollerConfig {
/**
* <p>Constructor for SnmpInterfacePollerConfigManager.</p>
*
* @param stream a {@link java.io.InputStream} object.
* @param localServer a {@link java.lang.String} object.
* @param verifyServer a boolean.
* @throws org.exolab.castor.xml.MarshalException if any.
* @throws org.exolab.castor.xml.ValidationException if any.
* @throws java.io.IOException if any.
*/
public SnmpInterfacePollerConfigManager(InputStream stream, String localServer, boolean verifyServer) throws MarshalException, ValidationException, IOException {
m_localServer = localServer;
m_verifyServer = verifyServer;
reloadXML(stream);
}
/**
* <p>update</p>
*
* @throws java.io.IOException if any.
* @throws org.exolab.castor.xml.MarshalException if any.
* @throws org.exolab.castor.xml.ValidationException if any.
*/
public abstract void update() throws IOException, MarshalException, ValidationException;
/**
* <p>saveXml</p>
*
* @param xml a {@link java.lang.String} object.
* @throws java.io.IOException if any.
*/
protected abstract void saveXml(String xml) throws IOException;
/**
* The config class loaded from the config file
*/
private SnmpInterfacePollerConfiguration m_config;
/**
* A mapping of the configured URLs to a list of the specific IPs configured
* in each - so as to avoid file reads
*/
private Map<String, List<String>> m_urlIPMap;
/**
* A mapping of the configured package to a list of IPs selected via filter
* rules, so as to avoid repetitive database access.
*/
private Map<Package, List<InetAddress>> m_pkgIpMap;
private Map<String,Map<String,Interface>> m_pkgIntMap;
/**
* A boolean flag to indicate If a filter rule against the local OpenNMS
* server has to be used.
*/
private static boolean m_verifyServer;
/**
* The name of the local OpenNMS server
*/
private static String m_localServer;
/**
* Go through the poller configuration and build a mapping of each
* configured URL to a list of IPs configured in that URL - done at init()
* time so that repeated file reads can be avoided
*/
private void createUrlIpMap() {
m_urlIPMap = new HashMap<String, List<String>>();
for(Package pkg : packages()) {
for(String url : includeURLs(pkg)) {
List<String> iplist = IpListFromUrl.parse(url);
if (iplist.size() > 0) {
m_urlIPMap.put(url, iplist);
}
}
}
}
/**
* <p>reloadXML</p>
*
* @param stream a {@link java.io.InputStream} object.
* @throws org.exolab.castor.xml.MarshalException if any.
* @throws org.exolab.castor.xml.ValidationException if any.
* @throws java.io.IOException if any.
*/
protected synchronized void reloadXML(InputStream stream) throws MarshalException, ValidationException, IOException {
m_config = CastorUtils.unmarshal(SnmpInterfacePollerConfiguration.class, stream);
createUrlIpMap();
createPackageIpListMap();
}
/**
* Saves the current in-memory configuration to disk and reloads
*
* @throws org.exolab.castor.xml.MarshalException if any.
* @throws java.io.IOException if any.
* @throws org.exolab.castor.xml.ValidationException if any.
*/
public synchronized void save() throws MarshalException, IOException, ValidationException {
// Marshal to a string first, then write the string to the file. This
// way the original config
// isn't lost if the XML from the marshal is hosed.
StringWriter stringWriter = new StringWriter();
Marshaller.marshal(m_config, stringWriter);
saveXml(stringWriter.toString());
update();
}
/**
* Return the poller configuration object.
*
* @return a {@link org.opennms.netmgt.config.snmpinterfacepoller.SnmpInterfacePollerConfiguration} object.
*/
public synchronized SnmpInterfacePollerConfiguration getConfiguration() {
return m_config;
}
/**
* <p>getPackage</p>
*
* @param name a {@link java.lang.String} object.
* @return a {@link org.opennms.netmgt.config.snmpinterfacepoller.Package} object.
*/
public synchronized Package getPackage(final String name) {
for(Package pkg : packages()) {
if (pkg.getName().equals(name)) {
return pkg;
}
}
return null;
}
/**
* <p>addPackage</p>
*
* @param pkg a {@link org.opennms.netmgt.config.snmpinterfacepoller.Package} object.
*/
public synchronized void addPackage(Package pkg) {
m_config.addPackage(pkg);
}
/**
* This method is used to determine if the named interface is included in
* the passed package's URL includes. If the interface is found in any of
* the URL files, then a value of true is returned, else a false value is
* returned.
*
* <pre>
*
* The file URL is read and each entry in this file checked. Each line
* in the URL file can be one of -
* <IP><space>#<comments>
* or
* <IP>
* or
* #<comments>
*
* Lines starting with a '#' are ignored and so are characters after
* a '<space>#' in a line.
*
* </pre>
*
* @param addr
* The interface to test against the package's URL
* @param url
* The URL file to read
*
* @return True if the interface is included in the URL, false otherwise.
*/
private boolean interfaceInUrl(String addr, String url) {
boolean bRet = false;
// get list of IPs in this URL
List<String> iplist = m_urlIPMap.get(url);
if (iplist != null && iplist.size() > 0) {
bRet = iplist.contains(addr);
}
return bRet;
}
/**
* This method returns the configured critical service name.
*
* @return the name of the configured critical service, or null if none is
* present
*/
public synchronized String[] getCriticalServiceIds() {
CriticalService[] cs = m_config.getNodeOutage().getCriticalService();
String[] criticalServiceNames = new String[cs.length];
for (int i =0 ; i< cs.length; i++) {
criticalServiceNames[i] = cs[i].getName();
}
return criticalServiceNames;
}
/**
* This method is used to establish package against IP list mapping, with
* which, the IP list is selected per package via the configured filter rules
* from the database.
*/
private void createPackageIpListMap() {
m_pkgIpMap = new HashMap<Package, List<InetAddress>>();
m_pkgIntMap = new HashMap<String, Map<String, Interface>>();
for(Package pkg : packages()) {
Map<String, Interface> interfaceMap = new HashMap<String, Interface>();
for (Interface interf: pkg.getInterfaceCollection()) {
interfaceMap.put(interf.getName(),interf);
}
m_pkgIntMap.put(pkg.getName(), interfaceMap);
// Get a list of IP addresses per package against the filter rules from
// database and populate the package, IP list map.
//
try {
List<InetAddress> ipList = getIpList(pkg);
if (log().isDebugEnabled())
log().debug("createPackageIpMap: package " + pkg.getName() + ": ipList size = " + ipList.size());
if (ipList.size() > 0) {
if (log().isDebugEnabled())
log().debug("createPackageIpMap: package " + pkg.getName() + ". IpList size is " + ipList.size());
m_pkgIpMap.put(pkg, ipList);
}
} catch (Throwable t) {
log().error("createPackageIpMap: failed to map package: " + pkg.getName() + " to an IP List: " + t, t);
}
}
}
/**
* <p>getIpList</p>
*
* @param pkg a {@link org.opennms.netmgt.config.snmpinterfacepoller.Package} object.
* @return a {@link java.util.List} object.
*/
public List<InetAddress> getIpList(Package pkg) {
StringBuffer filterRules = new StringBuffer(pkg.getFilter().getContent());
if (m_verifyServer) {
filterRules.append(" & (serverName == ");
filterRules.append('\"');
filterRules.append(m_localServer);
filterRules.append('\"');
filterRules.append(")");
}
if (log().isDebugEnabled())
log().debug("createPackageIpMap: package is " + pkg.getName() + ". filer rules are " + filterRules.toString());
List<InetAddress> ipList = FilterDaoFactory.getInstance().getActiveIPAddressList(filterRules.toString());
return ipList;
}
private ThreadCategory log() {
return ThreadCategory.getInstance(this.getClass());
}
/**
* This method is used to rebuild the package against IP list mapping when
* needed. When a node gained service event occurs, poller has to determine
* which package the IP/service combination is in, but if the interface is a
* newly added one, the package IP list should be rebuilt so that poller
* could know which package this IP/service pair is in.
*/
public synchronized void rebuildPackageIpListMap() {
createPackageIpListMap();
}
/**
* This method is used to determine if the named interface is included in
* the passed package definition. If the interface belongs to the package
* then a value of true is returned. If the interface does not belong to the
* package a false value is returned.
*
* <strong>Note: </strong>Evaluation of the interface against a package
* filter will only work if the IP is already in the database.
*
* @param iface
* The interface to test against the package.
* @param pkg
* The package to check for the inclusion of the interface.
* @return True if the interface is included in the package, false
* otherwise.
*/
public synchronized boolean interfaceInPackage(String iface, Package pkg) {
final InetAddress ifaceAddr = addr(iface);
ThreadCategory log = log();
boolean filterPassed = false;
// get list of IPs in this package
List<InetAddress> ipList = m_pkgIpMap.get(pkg);
if (ipList != null && ipList.size() > 0) {
filterPassed = ipList.contains(ifaceAddr);
}
if (log.isDebugEnabled())
log.debug("interfaceInPackage: Interface " + iface + " passed filter for package " + pkg.getName() + "?: " + filterPassed);
if (!filterPassed)
return false;
//
// Ensure that the interface is in the specific list or
// that it is in the include range and is not excluded
//
boolean has_specific = false;
boolean has_range_include = false;
boolean has_range_exclude = false;
// if there are NO include ranges then treat act as if the user include
// the range 0.0.0.0 - 255.255.255.255
has_range_include = pkg.getIncludeRangeCount() == 0 && pkg.getSpecificCount() == 0;
for (IncludeRange rng : pkg.getIncludeRangeCollection()) {
if (isInetAddressInRange(iface, rng.getBegin(), rng.getEnd())) {
has_range_include = true;
break;
}
}
byte[] addr = toIpAddrBytes(iface);
for (String spec : pkg.getSpecificCollection()) {
byte[] speca = toIpAddrBytes(spec);
if (new ByteArrayComparator().compare(speca, addr) == 0) {
has_specific = true;
break;
}
}
Enumeration<String> eurl = pkg.enumerateIncludeUrl();
while (!has_specific && eurl.hasMoreElements()) {
has_specific = interfaceInUrl(iface, eurl.nextElement());
}
for (ExcludeRange rng : pkg.getExcludeRangeCollection()) {
if (isInetAddressInRange(iface, rng.getBegin(), rng.getEnd())) {
has_range_exclude = true;
break;
}
}
return has_specific || (has_range_include && !has_range_exclude);
}
/**
* Returns the first package that the ip belongs to, null if none.
*
* <strong>Note: </strong>Evaluation of the interface against a package
* filter will only work if the IP is alrady in the database.
*
* @param ipaddr
* the interface to check
* @return the first package that the IP belongs to, null if none
*/
public synchronized Package getPackageForAddress(String ipaddr) {
for(Package pkg : packages()) {
if (interfaceInPackage(ipaddr, pkg)) {
return pkg;
}
}
return null;
}
/**
* {@inheritDoc}
*
* Returns a list of package names that the IP belongs to, null if none.
*
* <strong>Note: </strong>Evaluation of the interface against a package
* filter will only work if the IP is already in the database.
*/
public synchronized List<String> getAllPackageMatches(String ipaddr) {
List<String> matchingPkgs = new ArrayList<String>();
for(Package pkg : packages()) {
boolean inPkg = interfaceInPackage(ipaddr, pkg);
if (inPkg) {
matchingPkgs.add(pkg.getName());
}
}
return matchingPkgs;
}
/** {@inheritDoc} */
public synchronized String getPackageName(String ipaddr) {
for(Package pkg : packages()) {
if (interfaceInPackage(ipaddr, pkg)) {
return pkg.getName();
}
}
return null;
}
/** {@inheritDoc} */
public synchronized Set<String> getInterfaceOnPackage(String pkgName) {
if (m_pkgIntMap.containsKey(pkgName))
return Collections.unmodifiableSet(m_pkgIntMap.get(pkgName).keySet());
Set<String> retval = Collections.emptySet();
return Collections.unmodifiableSet(retval);
}
/** {@inheritDoc} */
public synchronized boolean getStatus(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).getStatus().equals("on");
}
/** {@inheritDoc} */
public synchronized long getInterval(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).getInterval();
}
/** {@inheritDoc} */
public synchronized String getCriteria(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).getCriteria();
}
/** {@inheritDoc} */
public synchronized boolean hasPort(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).hasPort();
}
/** {@inheritDoc} */
public synchronized int getPort(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).getPort();
}
/** {@inheritDoc} */
public synchronized boolean hasTimeout(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).hasTimeout();
}
/** {@inheritDoc} */
public synchronized int getTimeout(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).getTimeout();
}
/** {@inheritDoc} */
public synchronized boolean hasRetries(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).hasRetry();
}
/** {@inheritDoc} */
public synchronized int getRetries(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).getRetry();
}
/** {@inheritDoc} */
public synchronized boolean hasMaxVarsPerPdu(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).hasMaxVarsPerPdu();
}
/** {@inheritDoc} */
public synchronized int getMaxVarsPerPdu(String pkgName,String pkgInterfaceName) {
return m_pkgIntMap.get(pkgName).get(pkgInterfaceName).getMaxVarsPerPdu();
}
/**
* <p>enumeratePackage</p>
*
* @return a {@link java.util.Enumeration} object.
*/
public Enumeration<Package> enumeratePackage() {
return getConfiguration().enumeratePackage();
}
/**
* <p>packages</p>
*
* @return a {@link java.lang.Iterable} object.
*/
public Iterable<Package> packages() {
return getConfiguration().getPackageCollection();
}
/**
* <p>includeURLs</p>
*
* @param pkg a {@link org.opennms.netmgt.config.snmpinterfacepoller.Package} object.
* @return a {@link java.lang.Iterable} object.
*/
public Iterable<String> includeURLs(Package pkg) {
return pkg.getIncludeUrlCollection();
}
/**
* <p>getThreads</p>
*
* @return a int.
*/
public int getThreads() {
return getConfiguration().getThreads();
}
/**
* <p>getThreads</p>
*
* @return a long.
*/
public long getInterval() {
return getConfiguration().getInterval();
}
/**
* <p>getService</p>
*
* @return a {@link java.lang.String} object.
*/
public String getService() {
return getConfiguration().getService();
}
}