@SuppressWarnings({"checkstyle:npathcomplexity", "checkstyle:cyclomaticcomplexity"})
protected Collection<Address> getPossibleAddresses() {
final Collection<String> possibleMembers = getMembers();
final Set<Address> possibleAddresses = new HashSet<Address>();
final NetworkConfig networkConfig = config.getNetworkConfig();
for (String possibleMember : possibleMembers) {
AddressHolder addressHolder = AddressUtil.getAddressHolder(possibleMember);
try {
boolean portIsDefined =
addressHolder.getPort() != -1 || !networkConfig.isPortAutoIncrement();
int count = portIsDefined ? 1 : maxPortTryCount;
int port =
addressHolder.getPort() != -1 ? addressHolder.getPort() : networkConfig.getPort();
AddressMatcher addressMatcher = null;
try {
addressMatcher = AddressUtil.getAddressMatcher(addressHolder.getAddress());
} catch (InvalidAddressException ignore) {
EmptyStatement.ignore(ignore);
}
if (addressMatcher != null) {
final Collection<String> matchedAddresses;
if (addressMatcher.isIPv4()) {
matchedAddresses = AddressUtil.getMatchingIpv4Addresses(addressMatcher);
} else {
// for IPv6 we are not doing wildcard matching
matchedAddresses = Collections.singleton(addressHolder.getAddress());
}
for (String matchedAddress : matchedAddresses) {
addPossibleAddresses(
possibleAddresses, null, InetAddress.getByName(matchedAddress), port, count);
}
} else {
final String host = addressHolder.getAddress();
final InterfacesConfig interfaces = networkConfig.getInterfaces();
if (interfaces.isEnabled()) {
final InetAddress[] inetAddresses = InetAddress.getAllByName(host);
for (InetAddress inetAddress : inetAddresses) {
if (AddressUtil.matchAnyInterface(
inetAddress.getHostAddress(), interfaces.getInterfaces())) {
addPossibleAddresses(possibleAddresses, host, inetAddress, port, count);
}
}
} else {
addPossibleAddresses(possibleAddresses, host, null, port, count);
}
}
} catch (UnknownHostException e) {
logger.warning(
"Cannot resolve hostname '"
+ addressHolder.getAddress()
+ "'. Please make sure host is valid and reachable.");
if (logger.isFinestEnabled()) {
logger.finest("Error during resolving possible target!", e);
}
}
}
possibleAddresses.remove(node.getThisAddress());
return possibleAddresses;
}
