package backtype.storm.utils;
import backtype.storm.generated.DRPCExecutionException;
import backtype.storm.generated.DistributedRPC;
import org.apache.thrift7.TException;
import org.apache.thrift7.protocol.TBinaryProtocol;
import org.apache.thrift7.transport.TFramedTransport;
import org.apache.thrift7.transport.TSocket;
import org.apache.thrift7.transport.TTransport;
public class DRPCClient implements DistributedRPC.Iface {
private TTransport conn;
private DistributedRPC.Client client;
private String host;
private int port;
public DRPCClient(String host, int port) {
try {
this.host = host;
this.port = port;
connect();
} catch(TException e) {
throw new RuntimeException(e);
}
}
private void connect() throws TException {
conn = new TFramedTransport(new TSocket(host, port));
client = new DistributedRPC.Client(new TBinaryProtocol(conn));
conn.open();
}
public String getHost() {
return host;
}
public int getPort() {
return port;
}
public String execute(String func, String args) throws TException, DRPCExecutionException {
try {
if(client==null) connect();
return client.execute(func, args);
} catch(TException e) {
client = null;
throw e;
} catch(DRPCExecutionException e) {
client = null;
throw e;
}
}
public void close() {
conn.close();
}
}