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package com.orbekk.same;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.protobuf.RpcCallback;
import com.orbekk.paxos.PaxosServiceImpl;
import com.orbekk.protobuf.Rpc;
import com.orbekk.protobuf.SimpleProtobufServer;
import com.orbekk.same.config.Configuration;
public class SameController {
private final Logger logger = LoggerFactory.getLogger(getClass());
private final SimpleProtobufServer pServer;
private volatile Master master;
private final Client client;
private final PaxosServiceImpl paxos;
private final Configuration configuration;
private final ConnectionManager connections;
private final RpcFactory rpcf;
/**
* Timeout for remote operations in milliseconds.
*/
private static final int timeout = 10000;
private MasterController masterController = new MasterController() {
@Override
public void enableMaster(State lastKnownState, int masterId) {
String myLocation = configuration.get("localIp") + ":" +
configuration.get("pport");
String masterUrl = configuration.get("baseUrl") +
"MasterService.json";
master = Master.create(connections,
masterUrl, configuration.get("networkName"), myLocation,
rpcf);
master.resumeFrom(lastKnownState, masterId);
pServer.registerService(master.getNewService());
master.start();
registerNetwork(master);
}
@Override
public void disableMaster() {
if (master != null) {
master.interrupt();
}
}
};
public static SameController create(Configuration configuration) {
int pport = configuration.getInt("pport");
String myLocation = configuration.get("localIp") + ":" + pport;
ConnectionManagerImpl connections = new ConnectionManagerImpl(
timeout, timeout);
RpcFactory rpcf = new RpcFactory(timeout);
State clientState = new State(".InvalidClientNetwork");
String baseUrl = String.format("http://%s:%s/",
configuration.get("localIp"), configuration.getInt("port"));
String clientUrl = baseUrl + "ClientService.json";
ExecutorService clientExecutor = Executors.newCachedThreadPool();
Client client = new Client(clientState, connections,
clientUrl, myLocation, rpcf, clientExecutor);
PaxosServiceImpl paxos = new PaxosServiceImpl("");
SimpleProtobufServer pServer = SimpleProtobufServer.create(pport);
pServer.registerService(client.getNewService());
pServer.registerService(paxos.getService());
SameController controller = new SameController(
configuration, connections, client,
paxos, pServer, rpcf);
return controller;
}
public SameController(
Configuration configuration,
ConnectionManager connections,
Client client,
PaxosServiceImpl paxos,
SimpleProtobufServer pServer,
RpcFactory rpcf) {
this.configuration = configuration;
this.connections = connections;
this.client = client;
this.paxos = paxos;
this.pServer = pServer;
this.rpcf = rpcf;
}
public void start() throws Exception {
pServer.start();
client.setMasterController(masterController);
client.start();
}
public void stop() {
try {
client.interrupt();
if (master != null) {
master.interrupt();
}
pServer.interrupt();
} catch (Exception e) {
logger.error("Failed to stop webserver", e);
}
}
public void join() {
client.interrupt();
if (master != null) {
master.interrupt();
}
}
public void createNetwork(String networkName) {
masterController.disableMaster();
masterController.enableMaster(new State(networkName), 1);
joinNetwork(master.getMasterInfo());
}
public void joinNetwork(Services.MasterState masterInfo) {
client.joinNetwork(masterInfo);
}
public Client getClient() {
return client;
}
public Master getMaster() {
return master;
}
public void registerCurrentNetwork() {
registerNetwork(master);
}
public void registerNetwork(Master master) {
Services.Directory directory = getDirectory();
if (directory == null) {
return;
}
Services.MasterState request = Services.MasterState.newBuilder()
.setNetworkName(master.getNetworkName())
.setMasterLocation(master.getLocation())
.build();
final Rpc rpc = rpcf.create();
RpcCallback<Services.Empty> done = new RpcCallback<Services.Empty>() {
@Override public void run(Services.Empty unused) {
if (!rpc.isOk()) {
logger.warn("Failed to register network: {}", rpc);
}
}
};
directory.registerNetwork(rpc, request, done);
}
public Services.Directory getDirectory() {
String directoryLocation = configuration.get("directoryLocation");
if (directoryLocation != null) {
return connections.getDirectory(directoryLocation);
} else {
return null;
}
}
public VariableFactory createVariableFactory() {
return new VariableFactory(client.getInterface());
}
}
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