private void createRegistry() throws IOException {
// already created?
if (registry != null) {
return;
}
// Ensure cryptographically strong random number generator used
// to choose the object number - see java.rmi.server.ObjID
System.setProperty("java.rmi.server.randomIDs", "true");
// set RMI hostname to host if property isn't set already
// This fixes a hard to understand connection refused issue.
String rmi_host = System.getProperty("java.rmi.server.hostname");
if (rmi_host == null) {
System.setProperty("java.rmi.server.hostname", host);
}
// Start or reuse an RMI registry on specified port
try {
registry = LocateRegistry.getRegistry(port);
// provoke a RemoteException if registry doesn't exist yet.
registry.list();
} catch (Exception ignored) {
registry = LocateRegistry.createRegistry(port);
}
/*catch (IOException ex) {
registry = LocateRegistry.createRegistry(port);
}*/
}
/**
* Starts the common RMI registry. In order to provide RMI stub for remote client, the JMX RMI
* connector should be register into an RMI registry. Each server will maintain its own private
* one.
*
* @throws Exception if the registry cannot be started
*/
private void startCommonRegistry() throws Exception {
int registryPort = jmxConnectionHandler.getListenPort();
//
// create our local RMI registry if it does not exist already
if (debugEnabled()) {
TRACER.debugVerbose("start or reach an RMI registry on port %d", registryPort);
}
try {
//
// TODO Not yet implemented: If the host has several interfaces
if (registry == null) {
rmiSsf = new OpendsRmiServerSocketFactory();
registry = LocateRegistry.createRegistry(registryPort, null, rmiSsf);
}
} catch (RemoteException re) {
//
// is the registry already created ?
if (debugEnabled()) {
TRACER.debugWarning("cannot create the RMI registry -> already done ?");
}
try {
//
// get a 'remote' reference on the registry
Registry reg = LocateRegistry.getRegistry(registryPort);
//
// 'ping' the registry
reg.list();
registry = reg;
} catch (Exception e) {
if (debugEnabled()) {
//
// no 'valid' registry found on the specified port
TRACER.debugError("exception thrown while pinging the RMI registry");
//
// throw the original exception
TRACER.debugCaught(DebugLogLevel.ERROR, re);
}
throw re;
}
//
// here the registry is ok even though
// it was not created by this call
if (debugEnabled()) {
TRACER.debugWarning("RMI was registry already started");
}
}
}
public ClientRMI() throws RemoteException, NotBoundException {
try {
// betHouse - este nome identifica o objecto que o servidor regustou no registry, para o
// cliente lhe aceder
Registry registry = LocateRegistry.getRegistry(7000);
for (String n : registry.list()) {
System.out.println("> " + n);
}
server = (ServerInterface) registry.lookup("betHouse");
menu();
} catch (RemoteException ex) {
ex.printStackTrace();
System.out.println("Server offline.");
System.exit(0);
}
}
public ArrayList<KeyValueServerInterface> getServersList() throws RemoteException {
//
ArrayList<KeyValueServerInterface> res = new ArrayList();
try {
Registry registry = LocateRegistry.getRegistry();
String[] name = registry.list();
for (String str : name) {
// if( str.equals(server_name) ) continue;
KeyValueServerInterface obj = (KeyValueServerInterface) registry.lookup(str);
res.add(obj);
}
} catch (Exception e) {
System.out.println(e.getMessage());
}
return res;
}
/* (non-Javadoc)
* @see org.objectweb.proactive.core.remoteobject.RemoteObjectFactory#list(java.net.URI)
*/
public URI[] list(URI url) throws ProActiveException {
try {
Registry registry = getRegistry(url);
String[] names = registry.list();
if (names != null) {
URI[] uris = new URI[names.length];
for (int i = 0; i < names.length; i++) {
uris[i] =
URIBuilder.buildURI(
URIBuilder.getHostNameFromUrl(url),
names[i],
protocolIdentifier,
URIBuilder.getPortNumber(url));
}
return uris;
}
} catch (Exception e) {
throw new ProActiveException(e);
}
return null;
}
public static void main(String args[]) throws RuntimeException {
System.err.println("\nRegression test for bug/rfe 4254808\n");
Registry registry = null;
LegalRegistryNames legal = null;
boolean oneFormFailed = false;
String[] names = null;
Vector legalForms = getLegalForms();
Remote shouldFind = null;
// create a registry and the test object
try {
legal = new LegalRegistryNames();
System.err.println("Starting registry on default port");
registry = LocateRegistry.createRegistry(Registry.REGISTRY_PORT);
} catch (Exception e) {
TestLibrary.bomb("registry already running on test port");
}
// enumerate through all legal URLs to verify that a remote
// object can be bound and unbound
String s = null;
Enumeration en = legalForms.elements();
while (en.hasMoreElements()) {
s = (String) en.nextElement();
System.err.println("\ntesting form: " + s);
try {
Naming.rebind(s, legal);
names = registry.list();
// ensure that the name in the registry is what is expected
if ((names.length > 0) && (names[0].compareTo("MyName") != 0)) {
oneFormFailed = true;
System.err.println("\tRegistry entry for form: " + s + " is incorrect: " + names[0]);
}
// ensure that the object can be unbound under the URL string
shouldFind = Naming.lookup(s);
Naming.unbind(s);
System.err.println("\tform " + s + " OK");
} catch (Exception e) {
e.printStackTrace();
oneFormFailed = true;
System.err.println(
"\tunexpected lookup or unbind " + "exception for form: " + s + e.getMessage());
}
}
if (oneFormFailed) {
TestLibrary.bomb("Test failed");
}
// get the test to exit quickly
TestLibrary.unexport(legal);
}
private static IStatus collectServerInfos(
String address,
int port,
final SpecialAddress special,
final List<RemoteR> infos,
final SubMonitor progress) {
try {
if (special != null) {
address = special.fPublicHost;
port = special.fPort;
}
progress.subTask(
NLS.bind(Messages.RRemoteConsoleSelectionDialog_task_Resolving_message, address));
final InetAddress inetAddress = InetAddress.getByName(address);
final String hostname = inetAddress.getHostName();
final String hostip = inetAddress.getHostAddress();
progress.worked(1);
if (progress.isCanceled()) {
return Status.CANCEL_STATUS;
}
progress.subTask(
NLS.bind(Messages.RRemoteConsoleSelectionDialog_task_Connecting_message, hostname));
final Registry registry;
if (special != null) {
final RMIClientSocketFactory socketFactory = special.getSocketFactory(progress.newChild(5));
RjsComConfig.setRMIClientSocketFactory(socketFactory);
registry = LocateRegistry.getRegistry(special.fPrivateHost, port, socketFactory);
} else {
RjsComConfig.setRMIClientSocketFactory(null);
registry = LocateRegistry.getRegistry(address, port);
}
final String rmiBase =
(port == Registry.REGISTRY_PORT)
? "//" + address + '/'
: //$NON-NLS-1$
"//" + address + ':' + port + '/'; // $NON-NLS-1$
final String[] names = registry.list();
for (final String name : names) {
try {
final Remote remote = registry.lookup(name);
if (remote instanceof Server) {
final Server server = (Server) remote;
final ServerInfo info = server.getInfo();
final String rmiAddress = rmiBase + name;
final RemoteR r = new RemoteR(hostname, hostip, rmiAddress, info);
infos.add(r);
}
} catch (final Exception e) {
}
}
return Status.OK_STATUS;
} catch (final RemoteException e) {
return new Status(IStatus.WARNING, RConsoleUIPlugin.PLUGIN_ID, address);
} catch (final UnknownHostException e) {
return new Status(
IStatus.ERROR,
RConsoleUIPlugin.PLUGIN_ID,
"Unknown host: " + e.getLocalizedMessage()); // $NON-NLS-1$
} catch (final CoreException e) {
return e.getStatus();
} finally {
RjsComConfig.clearRMIClientSocketFactory();
}
}
/**
* Test the given RMI registry, calling some operation on it to check whether it is still active.
*
* <p>Default implementation calls <code>Registry.list()</code>.
*
* @param registry the RMI registry to test
* @throws RemoteException if thrown by registry methods
* @see java.rmi.registry.Registry#list()
*/
protected void testRegistry(Registry registry) throws RemoteException {
registry.list();
}
public void run() {
int remote_RMI_port_integer1 = 0;
int remote_RMI_port_integer2 = 0;
int RMI_port_integer = 0;
String IP_Address_Remote_RMI1_string = "";
String IP_Address_Remote_RMI2_string = "";
String s = "";
Scanner scanServ = new Scanner(System.in);
System.out.println("What is the server port?");
String port_string = scanServ.nextLine();
int port_value = Integer.parseInt(port_string);
// Setting up connection!
ServerSocket ss = null;
try {
ss = new ServerSocket(port_value);
} catch (IOException e) {
System.out.println("Couldn't Listen!");
System.exit(0);
}
// Add code here to bind to the RMI Registry
try {
System.out.println("Local RMI Port: ");
String RMI_port_string = scanServ.nextLine();
System.out.println("IP Address of Remote Server 1: ");
IP_Address_Remote_RMI1_string = scanServ.nextLine();
System.out.println("Remote RMI Registry Port 1: ");
String remote_RMI_port_string1 = scanServ.nextLine();
System.out.println("IP Address of Remote Server 2: ");
IP_Address_Remote_RMI2_string = scanServ.nextLine();
System.out.println("Remote RMI Registry Port 2: ");
String remote_RMI_port_string2 = scanServ.nextLine();
InetAddress myIPAddress = InetAddress.getLocalHost();
// System.out.println(myIPAddress);
String hostaddress = myIPAddress.getHostAddress();
String registry_string = "IP: " + hostaddress + " Port: " + port_string;
System.out.println(registry_string);
FileServer obj = new FileServer();
Hello stub = (Hello) UnicastRemoteObject.exportObject(obj, 0);
// Bind the remote object's stub in the registry
// add code to convert FROM STRING TO INTEGER!!!
RMI_port_integer = Integer.parseInt(RMI_port_string);
remote_RMI_port_integer1 = Integer.parseInt(remote_RMI_port_string1);
remote_RMI_port_integer2 = Integer.parseInt(remote_RMI_port_string2);
Registry registry = LocateRegistry.getRegistry(RMI_port_integer);
registry.bind(registry_string, stub);
Registry registry_remote1 =
LocateRegistry.getRegistry(IP_Address_Remote_RMI1_string, remote_RMI_port_integer1);
Registry registry_remote2 =
LocateRegistry.getRegistry(IP_Address_Remote_RMI2_string, remote_RMI_port_integer2);
// add code here also for the case of the ip address of the remote host! :)
System.err.println("Server ready");
} catch (Exception e) {
System.err.println("Server exception: " + e.toString());
e.printStackTrace();
}
while (true) {
System.out.println("Listening...");
Socket cs = null;
try {
cs = ss.accept();
System.out.println("Connection established" + cs);
} catch (Exception e) {
System.out.println("Accept failed");
System.exit(1);
}
try {
PrintWriter put = new PrintWriter(cs.getOutputStream(), true);
BufferedReader st = new BufferedReader(new InputStreamReader(cs.getInputStream()));
String x = st.readLine();
/**
* *********************************************************************************************
* ***************************************Client
* Download!***************************************
* *********************************************************************************************
*/
if (x.equals("1")) {
System.out.println("\nAttempting to Send File to Client!");
s = st.readLine();
String testfilename = s;
System.out.println("The requested file is : " + s);
File f = new File(s);
// ***********************SERVER HAS FILE**********************/
if (f.exists()) // server has the file, so we service the request
{
put.println("SERVER_HAS_FILE");
BufferedInputStream d = new BufferedInputStream(new FileInputStream(s));
BufferedOutputStream outStream = new BufferedOutputStream(cs.getOutputStream());
BufferedReader disb = new BufferedReader(new InputStreamReader(cs.getInputStream()));
int amountClientRead = Integer.parseInt(disb.readLine());
System.out.println("\n\n\nAMOUNT THE CLIENT HAS READ!" + amountClientRead);
if (amountClientRead > 0) {
System.out.println("\n\nRESUMING DOWNLOAD!!!");
}
byte buffer[] = new byte[1024];
int read;
while ((read = d.read(buffer)) != -1) {
outStream.write(buffer, 0, read);
outStream.flush();
}
// put.println("SERVER_HAS_FILE");
d.close();
outStream.close();
System.out.println("File Transferred to Client Succesfully!");
cs.close();
}
// ***********************SERVER DOES NOT HAVE REQUESTED FILE**********************/
else {
System.out.println("Looks like we don't have the file on this server!");
// This server does not have the requested file!
// String host = (args.length < 1) ? null : args[0];
try {
System.out.println(
"\nSending out a broadcast to the other servers to see if they have the file!");
// wait until receiving the responses...
Registry registry = LocateRegistry.getRegistry(RMI_port_integer);
String[] registry_list = registry.list();
String[] hasFileList =
new String
[registry_list
.length]; // an array of strings for holding the ip&port of servers that
// have the file
System.out.println("DEBUGGING THIS");
Registry registry_remote1 =
LocateRegistry.getRegistry(
IP_Address_Remote_RMI1_string, remote_RMI_port_integer1);
String[] registry_list_remote1 = registry_remote1.list();
String[] hasFileList_remote1 =
new String
[registry_list_remote1
.length]; // an array of strings for holding the ip&port of servers that
// have the file
Registry registry_remote2 =
LocateRegistry.getRegistry(
IP_Address_Remote_RMI2_string, remote_RMI_port_integer2);
String[] registry_list_remote2 = registry_remote2.list();
String[] hasFileList_remote2 =
new String
[registry_list_remote2
.length]; // an array of strings for holding the ip&port of servers that
// have the file
System.out.println("I got here!!!");
// going through all of the entries in the registry, assuming we have fewer than 10000
// servers
/// *****************************************LOCAL check**********************/
try {
int numHasFile = 0; // the number of mirrors with the requested file
int testcount = 0;
while (testcount < 10000) {
System.out.println(registry_list[testcount]);
// add code fix here where you get rid of the hardcoded lookup! i.e. we will need
// to broadcast!
Hello stub = (Hello) registry.lookup(registry_list[testcount]);
// Hello stub = (Hello) registry.lookup("1235");
String response = stub.sayHello(testfilename);
System.out.println("response: " + response);
// response == yes, has file list places the value
if (response.equals(
"YES")) { // adds the ip and port values for servers which responded with yes
// to an array of strings!
hasFileList[numHasFile] = registry_list[testcount];
// System.out.println(hasFileList[numHasFile]);
numHasFile++;
}
testcount++;
// add code for NOW passing the list to the client!
// make a list based upon the responses to transmit the (IP Address, Port #)
// passing the responses from the broadcast back to the client here
}
} catch (Exception fail) {
System.out.println("registry end");
}
/// *****************************************1st**********************/
try {
int numHasFile = 0; // the number of mirrors with the requested file
int testcount = 0;
while (testcount < 10000) {
System.out.println(registry_list_remote1[testcount]);
// add code fix here where you get rid of the hardcoded lookup! i.e. we will need
// to broadcast!
Hello stub1 = (Hello) registry_remote1.lookup(registry_list_remote1[testcount]);
String response_remote1 = stub1.sayHello(testfilename);
System.out.println("response: " + response_remote1);
// response == yes, has file list places the value
if (response_remote1.equals(
"YES")) { // adds the ip and port values for servers which responded with yes
// to an array of strings!
hasFileList_remote1[numHasFile] = registry_list_remote1[testcount];
// System.out.println(hasFileList[numHasFile]);
numHasFile++;
}
testcount++;
// add code for NOW passing the list to the client!
// make a list based upon the responses to transmit the (IP Address, Port #)
// passing the responses from the broadcast back to the client here
}
} catch (Exception fail) {
System.out.println("registry end 2");
}
//// ****************************************2nd**********************/
try {
int numHasFile = 0; // the number of mirrors with the requested file
int testcount = 0;
while (testcount < 10000) {
System.out.println(registry_list_remote2[testcount]);
// add code fix here where you get rid of the hardcoded lookup! i.e. we will need
// to broadcast!
Hello stub2 = (Hello) registry_remote2.lookup(registry_list_remote2[testcount]);
String response_remote2 = stub2.sayHello(testfilename);
System.out.println("response: " + response_remote2);
// response == yes, has file list places the value
if (response_remote2.equals(
"YES")) { // adds the ip and port values for servers which responded with yes
// to an array of strings!
hasFileList_remote2[numHasFile] = registry_list_remote2[testcount];
// System.out.println(hasFileList[numHasFile]);
numHasFile++;
}
testcount++;
// add code for NOW passing the list to the client!
// make a list based upon the responses to transmit the (IP Address, Port #)
// passing the responses from the broadcast back to the client here
}
} catch (Exception fail) {
System.out.println("registry end 3");
}
/**
* ***********************FORWARDING DETAILS OF MIRROR SERVERS TO
* CLIENT*******************************************
*/
// print what you want to send to the client here from hasFileList arrays of strings
// for now
System.out.println("Will send these mirrors to the client: ");
try // ADD CODE HERE
{
// display the contents of the three arrays of strings concatenated!
// handle the case of no other servers being available
String[] combinedHasFileArray =
new String
[hasFileList.length
+ hasFileList_remote1.length
+ hasFileList_remote2.length];
System.arraycopy(hasFileList, 0, combinedHasFileArray, 0, hasFileList.length);
System.arraycopy(
hasFileList_remote1,
0,
combinedHasFileArray,
hasFileList.length,
hasFileList_remote1.length);
System.arraycopy(
hasFileList_remote2,
0,
combinedHasFileArray,
hasFileList.length + hasFileList_remote1.length,
hasFileList_remote2.length);
put.println("SERVER_NOT_HAVE_FILE");
System.out.println("THE CODE GOT HERE!");
int i = 0;
while (i < combinedHasFileArray.length) {
put.println(combinedHasFileArray[i]);
System.out.println(combinedHasFileArray[i]); // add code to send this to client!!!
i++;
}
put.println("END!!!");
} catch (Exception Noooooooooooo) {
System.out.println("Noooooooo");
}
} catch (Exception e) {
System.err.println("Server without file exception: " + e.toString());
e.printStackTrace();
}
cs.close(); // temporarily have this to close the client socket!
}
}
/**
* *********************************************************************************************
* ***************************************Client
* Upload!***************************************
* *********************************************************************************************
*/
else if (x.equals("2")) {
System.out.println("Attempting to Retrieve File from Client!");
s = st.readLine();
System.out.println("\nThe file to be uploaded is : " + s);
s = st.readLine();
System.out.println("\nThe uploading file will be stored here : " + s);
// Take the file from the client!!!
File test = new File(s);
/** ************************RESUME CASE********************************** */
if (test.exists()) {
System.out.println("File already exists!");
System.out.println("Resuming!");
// get the amount of bytes already uploaded to the server by the client!
int amountRead = ((int) test.length()); // amount of bytes already read
System.out.println("THIS IS THE AMOUNT OF BYTES READ: " + amountRead);
FileOutputStream fs = new FileOutputStream(s, true);
BufferedInputStream d = new BufferedInputStream(cs.getInputStream());
// send file size to server
put.println(amountRead);
byte buffer[] = new byte[1024];
int read;
while ((read = d.read(buffer)) != -1) {
fs.write(buffer, 0, read);
fs.flush();
}
d.close();
System.out.println("File taken from client successfully!");
cs.close();
fs.close();
}
/** ************************NORMAL CASE********************************** */
else {
FileOutputStream fs = new FileOutputStream(s);
BufferedInputStream d = new BufferedInputStream(cs.getInputStream());
put.println(
0); // send the file size as zero to the client so we know to send the full file
byte buffer[] = new byte[1024];
int read;
while ((read = d.read(buffer)) != -1) {
fs.write(buffer, 0, read);
fs.flush();
}
d.close();
System.out.println("File taken from client successfully!");
cs.close();
fs.close();
}
}
/**
* *********************************************************************************************
* ***************************************Mirror
* Download!***************************************
* *********************************************************************************************
*/
else if (x.equals("3")) {
System.out.println("Service Discovery!");
// add code here to service the request
// this is where the client has selected this server for download after the initial server
// did not have the file!
// so basically just do a normal download ?
// this server is listening and a request comes in from another server
// to search the files located at this server
}
} catch (Exception e) {
System.out.println("error");
}
}
}
