/* (non-Javadoc)
* @see com.eucalyptus.dns.Zone#findRecords(org.xbill.DNS.Name, int)
*/
@Override
public SetResponse findRecords(Name name, int type) {
if (type == Type.AAAA) return (SetResponse.ofType(SetResponse.SUCCESSFUL));
if (StackConfiguration.USE_INSTANCE_DNS
&& name.toString().matches("euca-.+{3}-.+{3}-.+{3}-.+{3}\\..*")) {
try {
String[] tryIp =
name.toString()
.replaceAll("euca-", "")
.replaceAll(VmInstances.INSTANCE_SUBDOMAIN + ".*", "")
.split("-");
if (tryIp.length < 4) return super.findRecords(name, type);
String ipCandidate =
new StringBuffer()
.append(tryIp[0])
.append(".")
.append(tryIp[1])
.append(".")
.append(tryIp[2])
.append(".")
.append(tryIp[3])
.toString();
try {
VmInstances.lookupByPublicIp(ipCandidate);
} catch (Exception e) {
try {
VmInstances.lookupByPrivateIp(ipCandidate);
} catch (Exception e1) {
return super.findRecords(name, type);
}
}
InetAddress ip = InetAddress.getByName(ipCandidate);
SetResponse resp = new SetResponse(SetResponse.SUCCESSFUL);
resp.addRRset(new RRset(new ARecord(name, 1, ttl, ip)));
return resp;
} catch (Exception e) {
return super.findRecords(name, type);
}
} else if (StackConfiguration.USE_INSTANCE_DNS && name.toString().endsWith(".in-addr.arpa.")) {
int index = name.toString().indexOf(".in-addr.arpa.");
Name target;
if (index > 0) {
String ipString = name.toString().substring(0, index);
String[] parts = ipString.split("\\.");
String ipCandidate;
if (parts.length == 4) {
ipCandidate =
new StringBuffer()
.append(parts[3])
.append(".")
.append(parts[2])
.append(".")
.append(parts[1])
.append(".")
.append(parts[0])
.toString();
} else {
return super.findRecords(name, type);
}
try {
VmInstance instance = VmInstances.lookupByPublicIp(ipCandidate);
target = new Name(instance.getPublicDnsName() + ".");
} catch (Exception e) {
try {
VmInstance instance = VmInstances.lookupByPrivateIp(ipCandidate);
target = new Name(instance.getPrivateDnsName() + ".");
} catch (Exception e1) {
return super.findRecords(name, type);
}
}
SetResponse resp = new SetResponse(SetResponse.SUCCESSFUL);
resp.addRRset(new RRset(new PTRRecord(name, DClass.IN, ttl, target)));
return resp;
} else {
return super.findRecords(name, type);
}
} else {
return super.findRecords(name, type);
}
}
