/*
* Look for SOA records corresponding to the request
* TODO: Add cache coherency to SOA records?
*/
protected synchronized Record checkForSoaRecord(String questionName) {
if (!questionName.endsWith(".")) questionName += ".";
if (soaRecords == null) {
DnsRecord[] getRecs = null;
// load all SOA records...
try {
getRecs = proxy.getDNSByType(Type.SOA);
if (getRecs == null || getRecs.length == 0) soaRecords = Collections.emptyMap();
else {
soaRecords = new HashMap<String, Record>();
for (DnsRecord rec : getRecs) {
Record newRec =
Record.newRecord(
Name.fromString(rec.getName()),
Type.SOA,
rec.getDclass(),
rec.getTtl(),
rec.getData());
soaRecords.put(newRec.getName().toString(), newRec);
}
}
} catch (Exception e) {
LOGGER.error("Failed to load SOA records from config service.");
}
}
Record retVal = null;
if (soaRecords.size() > 0) {
// look for the record by question name
retVal = soaRecords.get(questionName);
if (retVal == null) {
// start taking apart the question name . by .
int index = -1;
while ((index = questionName.indexOf(".")) > 0 && index < (questionName.length() - 1)) {
questionName = questionName.substring(index + 1);
retVal = soaRecords.get(questionName);
if (retVal != null) break;
}
}
}
return retVal;
}
protected Collection<Record> processGenericANYRecordRequest(String name) throws DNSException {
DnsRecord records[];
try {
records = proxy.getDNSByNameAndType(name, Type.ANY);
} catch (Exception e) {
throw new DNSException(
DNSError.newError(Rcode.SERVFAIL),
"DNS service proxy call for DNS records failed: " + e.getMessage(),
e);
}
if (records == null || records.length == 0) return null;
Collection<Record> retVal = new ArrayList<Record>();
try {
for (DnsRecord record : records) {
Record rec =
Record.newRecord(
Name.fromString(record.getName()),
record.getType(),
record.getDclass(),
record.getTtl(),
record.getData());
retVal.add(rec);
}
} catch (Exception e) {
throw new DNSException(
DNSError.newError(Rcode.SERVFAIL),
"Failure while parsing generic record data: " + e.getMessage(),
e);
}
return retVal;
}
/*
* converts a configuration service DnsRecord to a dnsjava Record
*/
private Record toRecord(DnsRecord rec) {
return Record.newRecord(
nameFromString(rec.getName()), rec.getType(), rec.getDclass(), rec.getTtl(), rec.getData());
}