diff options
Diffstat (limited to 'jsonrpc/src/main/java/com/orbekk')
13 files changed, 0 insertions, 783 deletions
diff --git a/jsonrpc/src/main/java/com/orbekk/net/BroadcastListener.java b/jsonrpc/src/main/java/com/orbekk/net/BroadcastListener.java deleted file mode 100644 index c0b66e0..0000000 --- a/jsonrpc/src/main/java/com/orbekk/net/BroadcastListener.java +++ /dev/null @@ -1,53 +0,0 @@ -package com.orbekk.net; - -import java.io.IOException; -import java.net.DatagramPacket; -import java.net.DatagramSocket; -import java.net.SocketException; - -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -public class BroadcastListener { - private int port; - private Logger logger = LoggerFactory.getLogger(getClass()); - - public BroadcastListener(int port) { - this.port = port; - } - - public DatagramPacket listen() { - logger.debug("Waiting for broadcast on port " + port); - DatagramSocket socket; - try { - socket = new DatagramSocket(port); - } catch (SocketException e) { - logger.warn("Failed to create socket.", e.fillInStackTrace()); - return null; - } - try { - socket.setBroadcast(true); - } catch (SocketException e) { - logger.warn("Exception: {}", e); - } - byte[] buffer = new byte[2048]; - DatagramPacket packet = new DatagramPacket(buffer, buffer.length); - try { - socket.receive(packet); - } catch (IOException e) { - logger.warn("Exception when listening for broadcast: {}", e); - return null; - } - - String address = packet.getAddress().getHostAddress(); - logger.debug("Received broadcast from " + address + - ": " + new String(packet.getData())); - return packet; - } - - public static void main(String[] args) { - int port = Integer.parseInt(args[0]); - BroadcastListener listener = new BroadcastListener(port); - System.out.println("Received broadcast: " + listener.listen()); - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/net/Broadcaster.java b/jsonrpc/src/main/java/com/orbekk/net/Broadcaster.java deleted file mode 100644 index 95e279c..0000000 --- a/jsonrpc/src/main/java/com/orbekk/net/Broadcaster.java +++ /dev/null @@ -1,77 +0,0 @@ -package com.orbekk.net; - -import java.io.IOException; -import java.net.DatagramPacket; -import java.net.DatagramSocket; -import java.net.InetAddress; -import java.net.InterfaceAddress; -import java.net.NetworkInterface; -import java.net.SocketException; -import java.util.Enumeration; -import java.util.LinkedList; -import java.util.List; - -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - - -public class Broadcaster { - private Logger logger = LoggerFactory.getLogger(getClass()); - - public List<InetAddress> getBroadcastAddresses() { - List<InetAddress> broadcastAddresses = new LinkedList<InetAddress>(); - - Enumeration<NetworkInterface> interfaces; - try { - interfaces = NetworkInterface.getNetworkInterfaces(); - } catch (SocketException e) { - logger.warn("Network problem?", e.fillInStackTrace()); - return broadcastAddresses; - } - while (interfaces.hasMoreElements()) { - NetworkInterface iface = interfaces.nextElement(); - try { - if (iface.isLoopback()) { - logger.debug("Ignoring looback device " + iface.getName()); - continue; - } - for (InterfaceAddress address : iface.getInterfaceAddresses()) { - InetAddress broadcast = address.getBroadcast(); - if (broadcast != null) { - broadcastAddresses.add(broadcast); - } - } - } catch (SocketException e) { - logger.info("Ignoring interface " + iface.getName(), e.fillInStackTrace()); - } - } - return broadcastAddresses; - } - - public boolean sendBroadcast(int port, byte[] data) { - boolean successful = false; - for (InetAddress broadcastAddress : getBroadcastAddresses()) { - try { - DatagramSocket socket = new DatagramSocket(); - socket.setBroadcast(true); - DatagramPacket packet = new DatagramPacket(data, data.length, broadcastAddress, port); - socket.send(packet); - successful = true; - } catch (SocketException e) { - logger.warn("Failed to send broadcast to " + broadcastAddress + - ". ", e.fillInStackTrace()); - } catch (IOException e) { - logger.warn("Error when sending broadcast to " + - broadcastAddress + ".", e.fillInStackTrace()); - } - } - return successful; - } - - public static void main(String[] args) { - int port = Integer.parseInt(args[0]); - Broadcaster broadcaster = new Broadcaster(); - String message = "Broadcast from Java broadcaster."; - broadcaster.sendBroadcast(port, message.getBytes()); - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/net/HttpUtil.java b/jsonrpc/src/main/java/com/orbekk/net/HttpUtil.java deleted file mode 100644 index b4bb887..0000000 --- a/jsonrpc/src/main/java/com/orbekk/net/HttpUtil.java +++ /dev/null @@ -1,26 +0,0 @@ -package com.orbekk.net; - -import java.io.IOException; -import java.net.MalformedURLException; -import java.net.URL; -import java.net.URLConnection; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -public class HttpUtil { - private static final Logger logger = - LoggerFactory.getLogger(HttpUtil.class); - - public static void sendHttpRequest(String url) { - try { - URL pingUrl = new URL(url); - pingUrl.openStream(); - // URLConnection connection = pingUrl.openConnection(); - // connection.connect(); - } catch (MalformedURLException e) { - logger.warn("Unable to send ping to {}: {}.", url, e); - } catch (IOException e) { - logger.warn("Error when sending ping: {}", e); - } - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/rpc/App.java b/jsonrpc/src/main/java/com/orbekk/rpc/App.java deleted file mode 100644 index 0e9dce3..0000000 --- a/jsonrpc/src/main/java/com/orbekk/rpc/App.java +++ /dev/null @@ -1,47 +0,0 @@ -package com.orbekk.rpc; - -import com.googlecode.jsonrpc4j.JsonRpcServer; -import com.orbekk.same.ConnectionManagerImpl; -import com.orbekk.same.SameState; -import com.orbekk.same.SameService; -import com.orbekk.same.SameServiceImpl; -import org.eclipse.jetty.server.Server; - -public class App { - public static void main(String[] args) { - if (args.length < 3) { - System.err.println("Arguments: port networkName clientId"); - System.exit(1); - } - int port = Integer.parseInt(args[0]); - String networkName = args[1]; - String clientId = args[2]; - - ConnectionManagerImpl connections = new ConnectionManagerImpl(); - - SameState sameState = new SameState(networkName, clientId, - connections); - sameState.start(); - - SameServiceImpl service = new SameServiceImpl(sameState); - JsonRpcServer jsonServer = new JsonRpcServer(service, - SameService.class); - - Server server = new Server(port); - RpcHandler rpcHandler = new RpcHandler(jsonServer, sameState); - server.setHandler(rpcHandler); - - try { - server.start(); - } catch (Exception e) { - System.out.println("Could not start jetty server."); - e.printStackTrace(); - } - - try { - server.join(); - } catch (InterruptedException e) { - System.out.println("Interrupt"); - } - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/rpc/Client.java b/jsonrpc/src/main/java/com/orbekk/rpc/Client.java deleted file mode 100644 index 225347a..0000000 --- a/jsonrpc/src/main/java/com/orbekk/rpc/Client.java +++ /dev/null @@ -1,66 +0,0 @@ -package com.orbekk.rpc; - -import com.googlecode.jsonrpc4j.JsonRpcServer; -import com.orbekk.same.ConnectionManagerImpl; -import com.orbekk.same.SameState; -import com.orbekk.same.SameService; -import com.orbekk.same.SameServiceImpl; -import com.orbekk.net.HttpUtil; -import org.eclipse.jetty.server.Server; - -public class Client { - - public static void main(String[] args) { - if (args.length < 4) { - System.err.println("Arguments: port clientId thisNetworkName " + - "remoteNetworkAddr"); - System.exit(1); - } - int port = Integer.parseInt(args[0]); - String clientId = args[1]; - String networkName = args[2]; - String remoteAddr = args[3]; - - ConnectionManagerImpl connections = new ConnectionManagerImpl(); - - SameState sameState = new SameState(networkName, clientId, - connections); - sameState.start(); - - SameServiceImpl service = new SameServiceImpl(sameState); - JsonRpcServer jsonServer = new JsonRpcServer(service, - SameService.class); - - Server server = new Server(port); - RpcHandler rpcHandler = new RpcHandler(jsonServer, sameState); - server.setHandler(rpcHandler); - - try { - server.start(); - } catch (Exception e) { - System.out.println("Could not start jetty server."); - e.printStackTrace(); - } - - while (sameState.getUrl() == null) { - HttpUtil.sendHttpRequest(remoteAddr + "ping?port=" + port); - try { - Thread.sleep(500); - } catch (InterruptedException e) { - // Ignore interrupt in wait loop. - } - } - - SameService remoteService = connections.getConnection(remoteAddr); - remoteService.notifyNetwork("NoNetwork"); - remoteService.participateNetwork("FirstNetwork", - sameState.getClientId(), sameState.getUrl()); - - try { - server.join(); - } catch (InterruptedException e) { - System.out.println("Interrupt"); - } - - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/rpc/RpcHandler.java b/jsonrpc/src/main/java/com/orbekk/rpc/RpcHandler.java deleted file mode 100644 index 0bafad4..0000000 --- a/jsonrpc/src/main/java/com/orbekk/rpc/RpcHandler.java +++ /dev/null @@ -1,52 +0,0 @@ -package com.orbekk.rpc; - -import com.googlecode.jsonrpc4j.JsonRpcServer; -import com.orbekk.net.HttpUtil; -import com.orbekk.same.UrlReceiver; -import java.io.IOException; -import javax.servlet.ServletException; -import javax.servlet.http.HttpServletRequest; -import javax.servlet.http.HttpServletResponse; -import org.eclipse.jetty.server.Request; -import org.eclipse.jetty.server.handler.AbstractHandler; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -public class RpcHandler extends AbstractHandler { - private Logger logger = LoggerFactory.getLogger(getClass()); - private JsonRpcServer rpcServer; - private UrlReceiver urlReceiver; - - public RpcHandler(JsonRpcServer rpcServer, - UrlReceiver urlReceiver) { - this.rpcServer = rpcServer; - this.urlReceiver = urlReceiver; - } - - @Override - public synchronized void handle(String target, Request baseRequest, - HttpServletRequest request, HttpServletResponse response) - throws IOException, ServletException { - logger.info("Handling request to target: " + target); - - if (urlReceiver != null) { - String sameServiceUrl = "http://" + request.getLocalAddr() + - ":" + request.getLocalPort() + "/SameService.json"; - urlReceiver.setUrl(sameServiceUrl); - urlReceiver = null; - } - - if (target.equals("/ping")) { - int remotePort = Integer.parseInt(request.getParameter("port")); - String pongUrl = "http://" + request.getRemoteAddr() + ":" + - remotePort + "/pong"; - logger.info("Got ping. Sending pong to {}", pongUrl); - HttpUtil.sendHttpRequest(pongUrl); - } else if (target.equals("/pong")) { - logger.info("Received pong from {}", request.getRemoteAddr()); - } else { - rpcServer.handle(request, response); - } - baseRequest.setHandled(true); - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/same/ConnectionManager.java b/jsonrpc/src/main/java/com/orbekk/same/ConnectionManager.java deleted file mode 100644 index 985f6f0..0000000 --- a/jsonrpc/src/main/java/com/orbekk/same/ConnectionManager.java +++ /dev/null @@ -1,10 +0,0 @@ -package com.orbekk.same; - -/** - * An interface that returns a connection for a participant. - * - * When testing, this interface can be mocked to use local participants only. - */ -public interface ConnectionManager { - SameService getConnection(String url); -} diff --git a/jsonrpc/src/main/java/com/orbekk/same/ConnectionManagerImpl.java b/jsonrpc/src/main/java/com/orbekk/same/ConnectionManagerImpl.java deleted file mode 100644 index 841d5fa..0000000 --- a/jsonrpc/src/main/java/com/orbekk/same/ConnectionManagerImpl.java +++ /dev/null @@ -1,31 +0,0 @@ -package com.orbekk.same; - -import com.googlecode.jsonrpc4j.JsonRpcHttpClient; -import com.googlecode.jsonrpc4j.ProxyUtil; -import java.net.MalformedURLException; -import java.net.URL; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -public class ConnectionManagerImpl implements ConnectionManager { - - private Logger logger = LoggerFactory.getLogger(getClass()); - - public ConnectionManagerImpl() { - } - - @Override - public SameService getConnection(String url) { - SameService service = null; - try { - JsonRpcHttpClient client = new JsonRpcHttpClient(new URL(url)); - service = ProxyUtil.createProxy( - this.getClass().getClassLoader(), - SameService.class, - client); - } catch (MalformedURLException e) { - logger.warn("Unable to create client for {}, {}", url, e); - } - return service; - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/same/SameService.java b/jsonrpc/src/main/java/com/orbekk/same/SameService.java deleted file mode 100644 index 8f239da..0000000 --- a/jsonrpc/src/main/java/com/orbekk/same/SameService.java +++ /dev/null @@ -1,40 +0,0 @@ -package com.orbekk.same; - -import java.util.Map; - -public interface SameService { - /** - * A notification that 'networkName' exists. - * - * This is called by any participant of a network after a broadcast - * has been performed. - */ - void notifyNetwork(String networkName); - - /** - * A request from the callee to participate in 'networkName'. - */ - void participateNetwork(String networkName, String clientId, String url); - - /** - * Notification of participation in network. - */ - void notifyParticipation(String networkName, String masterId); - - /** - * New state. - * - * When sent to a non-master from the master, use 'newState' as the - * current state. - * - * When sent to a master, broadcast the new state to all clients. - */ - void setState(String newState); - - /** - * Notify all nodes of network participants. - * - * Only sent from master to non-master. - */ - void setParticipants(Map<String, String> participants); -} diff --git a/jsonrpc/src/main/java/com/orbekk/same/SameServiceImpl.java b/jsonrpc/src/main/java/com/orbekk/same/SameServiceImpl.java deleted file mode 100644 index 27579b5..0000000 --- a/jsonrpc/src/main/java/com/orbekk/same/SameServiceImpl.java +++ /dev/null @@ -1,60 +0,0 @@ -package com.orbekk.same; - -import java.util.Map; - -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -public class SameServiceImpl implements SameService { - private Logger logger = LoggerFactory.getLogger(getClass()); - private SameState sameState; - - public SameServiceImpl(SameState sameState) { - this.sameState = sameState; - } - - @Override - public void notifyNetwork(String networkName) { - logger.info("Notification from network " + networkName); - } - - @Override - public void participateNetwork(String networkName, String clientId, - String url) { - if (!networkName.equals(sameState.getNetworkName())) { - logger.warn("Client tried to join {}, but network name is {}.", - networkName, sameState.getNetworkName()); - return; - } - if (clientId.equals("") || url.equals("")) { - logger.warn("Missing client info: ClientId({}), URL({}).", - clientId, url); - return; - } - sameState.addParticipant(clientId, url); - } - - @Override - public void notifyParticipation(String networkName, String masterId) { - logger.info("Joining network {}. Master is {}", networkName, masterId); - // int i = 1; - // for (Map.Entry<String, String> e : participants.entrySet()) { - // String clientId = e.getKey(); - // String url = e.getValue(); - // logger.info(" {} participant {}: {}, {}", - // new Object[]{networkName, i, clientId, url}); - // i++; - // } - sameState.joinNetwork(networkName, masterId); - } - - @Override - public void setParticipants(Map<String, String> participants) { - sameState.setParticipants(participants); - } - - @Override - public void setState(String newState) { - sameState.setState(newState); - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/same/SameState.java b/jsonrpc/src/main/java/com/orbekk/same/SameState.java deleted file mode 100644 index c9cd216..0000000 --- a/jsonrpc/src/main/java/com/orbekk/same/SameState.java +++ /dev/null @@ -1,233 +0,0 @@ -package com.orbekk.same; - -import java.util.List; -import java.util.LinkedList; -import java.util.Map; -import java.util.HashMap; -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -/** - * The implementation of a 'Same' state. - * - * This class manages the current state of the Same protocol. - */ -public class SameState extends Thread implements UrlReceiver { - private Logger logger = LoggerFactory.getLogger(getClass()); - private ConnectionManager connections; - - // TODO: Change the name of State. - private com.orbekk.same.State state = - new com.orbekk.same.State(); - - /** - * The client id of this participant. - */ - private String clientId; - - /** - * Stopping condition for this thread. - */ - private boolean stopped = false; - - private String _setState = null; - private Map<String, String> _setParticipants = null; - - private Map<String, String> pendingParticipants = - new HashMap<String, String>(); - - public SameState(String networkName, String clientId, - ConnectionManager connections) { - state.setNetworkName(networkName); - this.clientId = clientId; - this.connections = connections; - state.setMasterId(clientId); - state.getParticipants().put(clientId, null); - } - - public String getMasterId() { - return state.getMasterId(); - } - - public synchronized Map<String, String> getParticipants() { - return state.getParticipants(); - } - - /** - * Reset this SameService to an initial state. - * - * TODO: Implement fully. - */ - private synchronized void resetState() { - state = new com.orbekk.same.State(); - pendingParticipants.clear(); - } - - public synchronized void joinNetwork(String networkName, String masterId) { - resetState(); - state.setNetworkName(networkName); - state.setMasterId(masterId); - logger.info("Joined network {}.", networkName); - } - - public String getClientId() { - return clientId; - } - - public String getNetworkName() { - return state.getNetworkName(); - } - - public String getCurrentState() { - return state.getData(); - } - - /** - * TODO: Move to a separate library. - */ - public void librarySetNewState(String newState) { - connections.getConnection( - state.getParticipants().get(state.getMasterId())) - .setState(newState); - } - - public String getUrl() { - return state.getParticipants().get(clientId); - } - - @Override - public void setUrl(String url) { - logger.info("My URL is {}", url); - state.getParticipants().put(clientId, url); - } - - public synchronized void addParticipant(String clientId, String url) { - logger.info("PendingParticipant.add: {} ({})", clientId, url); - pendingParticipants.put(clientId, url); - notifyAll(); - } - - public synchronized void setParticipants(Map<String, String> participants) { - logger.info("Pending operation: _setParticipants"); - _setParticipants = participants; - notifyAll(); - } - - public synchronized void setState(String newState) { - logger.info("Pending operation: _setState"); - _setState = newState; - notifyAll(); - } - - private synchronized void handleSetParticipants() { - if (_setParticipants != null) { - if (isMaster()) { - logger.error("{}: Master received setParticipants.", clientId); - } else { - logger.info("{}: New participants committed.", clientId); - state.getParticipants().clear(); - state.getParticipants().putAll(_setParticipants); - } - } - _setParticipants = null; - } - - public synchronized void handleSetState() { - if (_setState != null) { - if (isMaster()) { - broadcast(new ServiceOperation() { - @Override void run(SameService service) { - service.setState(_setState); - } - }); - } - state.setData(_setState); - _setState = null; - } - } - - private boolean isMaster() { - return state.getMasterId().equals(clientId); - } - - private synchronized void handleNewParticipants() { - if (!isMaster()) { - for (Map.Entry<String, String> e : pendingParticipants.entrySet()) { - SameService master = connections.getConnection( - state.getParticipants().get(state.getMasterId())); - logger.info("Redirecting participant request to {}", - state.getMasterId()); - String clientId = e.getKey(); - String url = e.getValue(); - master.participateNetwork(state.getNetworkName(), clientId, - url); - } - } else { - state.getParticipants().putAll(pendingParticipants); - for (Map.Entry<String, String> e : - pendingParticipants.entrySet()) { - String clientId = e.getKey(); - String url = e.getValue(); - logger.info("New participant: {} URL({})", clientId, url); - SameService remoteService = connections.getConnection(url); - remoteService.notifyParticipation(state.getNetworkName(), - state.getMasterId()); - broadcast(new ServiceOperation(){ - @Override void run(SameService service) { - service.setParticipants(state.getParticipants()); - } - }); - } - } - pendingParticipants.clear(); - } - - /** - * This method runs the pending commands to SameState. - * - * It should be called by the worker thread, but can be called directly - * for testing purposes to avoid threading in unit tests. - */ - synchronized void internalRun() { - handleNewParticipants(); - handleSetState(); - handleSetParticipants(); - } - - public synchronized void run() { - while (!stopped) { - internalRun(); - try { - wait(1000); - } catch (InterruptedException e) { - // Ignore interrupt in wait loop. - } - } - } - - public synchronized void stopSame() { - try { - stopped = true; - notifyAll(); - this.join(); - } catch (InterruptedException e) { - logger.warn("Got InterruptedException while waiting for SameState " + - "to finish. Ignoring."); - } - } - - public abstract static class ServiceOperation { - abstract void run(SameService service); - } - - public synchronized void broadcast(ServiceOperation operation) { - for (Map.Entry<String, String> e : - state.getParticipants().entrySet()) { - String clientId = e.getKey(); - String url = e.getValue(); - if (!clientId.equals(this.clientId)) { - operation.run(connections.getConnection(url)); - } - } - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/same/State.java b/jsonrpc/src/main/java/com/orbekk/same/State.java deleted file mode 100644 index 70ffa83..0000000 --- a/jsonrpc/src/main/java/com/orbekk/same/State.java +++ /dev/null @@ -1,78 +0,0 @@ -package com.orbekk.same; - -import java.util.Map; -import java.util.HashMap; - -public class State { - private long stateIteration = 0; - private Map<String, String> participants = new HashMap<String, String>(); - private String networkName = ""; - private String masterId = ""; - private String data = ""; - - public long getStateIteration() { - return stateIteration; - } - - public void setStateIteration(long stateIteration) { - this.stateIteration = stateIteration; - } - - public Map<String, String> getParticipants() { - return participants; - } - - public String getNetworkName() { - return networkName; - } - - public void setNetworkName(String networkName) { - this.networkName = networkName; - } - - public String getMasterId() { - return masterId; - } - - public void setMasterId(String masterId) { - this.masterId = masterId; - } - - public String getData() { - return data; - } - - public void setData(String data) { - this.data = data; - } - - @Override - public String toString() { - StringBuilder participantsString = new StringBuilder(); - participantsString.append("["); - boolean first = true; - for (Map.Entry<String, String> e : participants.entrySet()) { - if (!first) { - participantsString.append(", "); - } - first = false; - participantsString.append(e.getKey()) - .append("(") - .append(e.getValue()) - .append(")"); - String clientId = e.getKey(); - String url = e.getValue(); - } - participantsString.append("]"); - - return String.format( - "State( \n" + - " stateIteration = %d,\n" + - " networkName = %s,\n" + - " masterId = %s,\n" + - " data = %s,\n" + - " participants = %s\n" + - ")", stateIteration, networkName, masterId, data, - participantsString); - } -} diff --git a/jsonrpc/src/main/java/com/orbekk/same/UrlReceiver.java b/jsonrpc/src/main/java/com/orbekk/same/UrlReceiver.java deleted file mode 100644 index 31a0276..0000000 --- a/jsonrpc/src/main/java/com/orbekk/same/UrlReceiver.java +++ /dev/null @@ -1,10 +0,0 @@ -package com.orbekk.same; - -/** - * An interface to get notified of the URL to this computer. - * - * This interface is used to reliably obtain the URL of this host. - */ -public interface UrlReceiver { - void setUrl(String url); -} |