Examples with TextParseException org.xbill.DNS.TextParseException used on opensource projects

Example 21 with TextParseException

use of org.xbill.DNS.TextParseException in project fabric8 by fabric8io.

the class KubernetesHelper method lookupServiceInDns.

/**
 * Looks up the service in DNS.
 * If this is a headless service, this call returns the endpoint IPs from DNS.
 * If this is a non-headless service, this call returns the service IP only.
 * <p/>
 * See https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/services.md#headless-services
 */
public static Set<String> lookupServiceInDns(String serviceName) throws IllegalArgumentException, UnknownHostException {
    try {
        Lookup l = new Lookup(serviceName);
        Record[] records = l.run();
        if (l.getResult() == Lookup.SUCCESSFUL) {
            Set<String> endpointAddresses = new HashSet<>(records.length);
            for (int i = 0; i < records.length; i++) {
                ARecord aRecord = (ARecord) records[i];
                endpointAddresses.add(aRecord.getAddress().getHostAddress());
            }
            return endpointAddresses;
        } else {
            LOG.warn("Lookup {} result: {}", serviceName, l.getErrorString());
        }
    } catch (TextParseException e) {
        LOG.error("Unparseable service name: {}", serviceName, e);
    } catch (ClassCastException e) {
        LOG.error("Invalid response from DNS server - should have been A records", e);
    }
    return Collections.EMPTY_SET;
}

Example 22 with TextParseException

use of org.xbill.DNS.TextParseException in project ecf by eclipse.

the class BnRDnsSdServiceTypeID method getInternalQueries.

/* (non-Javadoc)
	 * @see org.eclipse.ecf.provider.dnssd.DnsSdServiceTypeID#getInternalQueries()
	 */
Lookup[] getInternalQueries() {
    List result = new ArrayList();
    for (int i = 0; i < scopes.length; i++) {
        String scope = scopes[i];
        // remove dangling "."
        if (scope.endsWith(".")) {
            // $NON-NLS-1$
            scope = scope.substring(0, scope.length() - 1);
        }
        Lookup query;
        try {
            query = new // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
            Lookup(// $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
            services[0] + "._udp" + "." + scope + ".", Type.PTR);
        } catch (TextParseException e) {
            continue;
        }
        result.add(query);
    }
    return (Lookup[]) result.toArray(new Lookup[result.size()]);
}

Example 23 with TextParseException

use of org.xbill.DNS.TextParseException in project Smack by igniterealtime.

the class DNSJavaResolver method lookupSrvRecords0.

@Override
protected List<SRV> lookupSrvRecords0(DnsName name, List<RemoteConnectionEndpointLookupFailure> lookupFailures, DnssecMode dnssecMode) {
    Lookup lookup;
    try {
        lookup = new Lookup(name.ace, Type.SRV);
    } catch (TextParseException e) {
        RemoteConnectionEndpointLookupFailure failure = new RemoteConnectionEndpointLookupFailure.DnsLookupFailure(name, e);
        lookupFailures.add(failure);
        return null;
    }
    Record[] recs = lookup.run();
    if (recs == null) {
        // TODO: When does this happen? Do we want/need to record a lookup failure?
        return null;
    }
    List<SRV> res = new ArrayList<>();
    for (Record record : recs) {
        org.xbill.DNS.SRVRecord srvRecord = (org.xbill.DNS.SRVRecord) record;
        if (srvRecord != null && srvRecord.getTarget() != null) {
            DnsName host = DnsName.from(srvRecord.getTarget().toString());
            int port = srvRecord.getPort();
            int priority = srvRecord.getPriority();
            int weight = srvRecord.getWeight();
            SRV r = new SRV(priority, weight, port, host);
            res.add(r);
        }
    }
    return res;
}