Examples with LDAPException com.novell.ldap.LDAPException used on opensource projects

Example 1 with LDAPException

use of com.novell.ldap.LDAPException in project opennms by OpenNMS.

the class LdapMonitor method poll.

/**
 * {@inheritDoc}
 *
 * Poll the specified address for service availability.
 *
 * During the poll an attempt is made to connect the service.
 *
 * Provided that the interface's response is valid we set the service status
 * to SERVICE_AVAILABLE and return.
 */
@Override
public PollStatus poll(MonitoredService svc, Map<String, Object> parameters) {
    int serviceStatus = PollStatus.SERVICE_UNAVAILABLE;
    String reason = null;
    final TimeoutTracker tracker = new TimeoutTracker(parameters, DEFAULT_RETRY, DEFAULT_TIMEOUT);
    // get the parameters
    // 
    final int ldapVersion = ParameterMap.getKeyedInteger(parameters, "version", LDAPConnection.LDAP_V3);
    final int ldapPort = determinePort(parameters);
    final String searchBase = ParameterMap.getKeyedString(parameters, "searchbase", DEFAULT_BASE);
    final String searchFilter = ParameterMap.getKeyedString(parameters, "searchfilter", DEFAULT_FILTER);
    final String password = (String) parameters.get("password");
    final String ldapDn = (String) parameters.get("dn");
    String address = InetAddrUtils.str(svc.getAddress());
    // first just try a connection to the box via socket. Just in case there
    // is
    // a no way to route to the address, don't iterate through the retries,
    // as a
    // NoRouteToHost exception will only be thrown after about 5 minutes,
    // thus tying
    // up the thread
    Double responseTime = null;
    Socket socket = null;
    try {
        socket = new Socket();
        socket.connect(new InetSocketAddress(svc.getAddress(), ldapPort), tracker.getConnectionTimeout());
        socket.setSoTimeout(tracker.getSoTimeout());
        LOG.debug("LdapMonitor: connected to host: {} on port: {}", address, ldapPort);
        // We're connected, so upgrade status to unresponsive
        serviceStatus = PollStatus.SERVICE_UNRESPONSIVE;
        if (socket != null)
            socket.close();
        // lets detect the service
        LDAPConnection lc = new LDAPConnection(new TimeoutLDAPSocket(tracker.getSoTimeout()));
        for (tracker.reset(); tracker.shouldRetry() && !(serviceStatus == PollStatus.SERVICE_AVAILABLE); tracker.nextAttempt()) {
            LOG.debug("polling LDAP on {}, {}", address, tracker);
            // connect to the ldap server
            tracker.startAttempt();
            try {
                lc.connect(address, ldapPort);
                LOG.debug("connected to LDAP server {} on port {}", address, ldapPort);
            } catch (LDAPException e) {
                LOG.debug("could not connect to LDAP server {} on port {}", address, ldapPort);
                reason = "could not connect to LDAP server " + address + " on port " + ldapPort;
                continue;
            }
            // bind if possible
            if (ldapDn != null && password != null) {
                try {
                    lc.bind(ldapVersion, ldapDn, password.getBytes());
                    LOG.debug("bound to LDAP server version {} with distinguished name {}", ldapVersion, ldapDn);
                    LOG.debug("poll: responseTime= {}ms", tracker.elapsedTimeInMillis());
                } catch (LDAPException e) {
                    try {
                        lc.disconnect();
                    } catch (LDAPException ex) {
                        LOG.debug(ex.getMessage());
                    }
                    LOG.debug("could not bind to LDAP server version {} with distinguished name {}", ldapVersion, ldapDn);
                    reason = "could not bind to LDAP server version " + ldapVersion + " with distinguished name " + ldapDn;
                    continue;
                }
            }
            // do a quick search and see if any results come back
            boolean attributeOnly = true;
            String[] attrs = { LDAPConnection.NO_ATTRS };
            int searchScope = LDAPConnection.SCOPE_ONE;
            LOG.debug("running search {} from {}", searchFilter, searchBase);
            LDAPSearchResults results = null;
            int msLimit = (int) tracker.getTimeoutInMillis();
            int serverLimit = (int) tracker.getTimeoutInSeconds() + 1;
            LDAPSearchConstraints cons = new LDAPSearchConstraints(msLimit, serverLimit, // dereference: default = never
            LDAPSearchConstraints.DEREF_NEVER, // maxResults: default = 1000
            1000, // doReferrals: default = false
            false, // batchSize: default = 1
            1, // handler: default = null
            null, // hop_limit: default = 10
            10);
            try {
                results = lc.search(searchBase, searchScope, searchFilter, attrs, attributeOnly, cons);
                if (results != null && results.hasMore()) {
                    responseTime = tracker.elapsedTimeInMillis();
                    LOG.debug("search yielded {} result(s)", results.getCount());
                    serviceStatus = PollStatus.SERVICE_AVAILABLE;
                } else {
                    LOG.debug("no results found from search");
                    reason = "No results found from search";
                    serviceStatus = PollStatus.SERVICE_UNAVAILABLE;
                }
            } catch (LDAPException e) {
                try {
                    lc.disconnect();
                } catch (LDAPException ex) {
                    LOG.debug(ex.getMessage());
                }
                LOG.debug("could not perform search {} from {}", searchFilter, searchBase);
                reason = "could not perform search " + searchFilter + " from " + searchBase;
                continue;
            }
            try {
                lc.disconnect();
                LOG.debug("disconected from LDAP server {} on port {}", address, ldapPort);
            } catch (LDAPException e) {
                LOG.debug(e.getMessage());
            }
        }
    } catch (ConnectException e) {
        LOG.debug("connection refused to host {}", address, e);
        reason = "connection refused to host " + address;
    } catch (NoRouteToHostException e) {
        LOG.debug("No route to host {}", address, e);
        reason = "No route to host " + address;
    } catch (InterruptedIOException e) {
        LOG.debug("did not connect to host with {}", tracker);
        reason = "did not connect to host with " + tracker;
    } catch (Throwable t) {
        LOG.debug("An undeclared throwable exception caught contacting host {}", address, t);
        reason = "An undeclared throwable exception caught contacting host " + address;
    }
    return PollStatus.get(serviceStatus, reason, responseTime);
}