package com.hazelcast.client.spi.impl;
import com.hazelcast.aws.AWSClient;
import com.hazelcast.client.config.ClientAwsConfig;
import com.hazelcast.client.connection.AddressProvider;
import com.hazelcast.client.util.AddressHelper;
import com.hazelcast.logging.ILogger;
import com.hazelcast.logging.Logger;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.logging.Level;
/**
* Aws Address Loader. Calls aws api to load ip addresses related to given credentials.
*/
public class AwsAddressProvider implements AddressProvider {
private static final ILogger LOGGER = Logger.getLogger(AwsAddressProvider.class);
private final AWSClient awsClient;
private volatile Map<String, String> privateToPublic;
AwsAddressProvider(ClientAwsConfig awsConfig) {
awsClient = new AWSClient(awsConfig);
}
@Override
public Collection<InetSocketAddress> loadAddresses() {
updateLookupTable();
final Map<String, String> lookupTable = getLookupTable();
final Collection<InetSocketAddress> addresses = new ArrayList<InetSocketAddress>(lookupTable.size());
for (String privateAddress : lookupTable.keySet()) {
addresses.addAll(AddressHelper.getSocketAddresses(privateAddress));
}
return addresses;
}
private Map<String, String> getLookupTable() {
Map<String, String> table = privateToPublic;
return table != null ? table : Collections.<String, String>emptyMap();
}
private void updateLookupTable() {
try {
privateToPublic = awsClient.getAddresses();
} catch (Exception e) {
LOGGER.log(Level.WARNING, "Aws addresses are failed to load : " + e.getMessage());
}
}
}