cleanup

Interface/AbstractWallet.java

-import java.util.HashMap;
-import akka.actor.ActorRef;
-import akka.actor.UntypedActor;
-import java.io.Serializable;
-
-public abstract class AbstractWallet extends UntypedActor implements Serializable {
-    
-    // Used to join the network (a pre known participant/Wallet must be known)
-    public static class ActionJoin implements Serializable {}
-    
-    // Returns some neighbors that might be used as known
-    // and/or local neighbors
-    public class ActionJoinAnswer implements Serializable {
-        public final HashMap<String, ActorRef> someNeighbors = new HashMap<>();
-    }
-    
-    // Used to push the state of my/a wallet to another participant
-    public static class ActionStoreOrUpdate implements Serializable {
-        public final AbstractWallet w;
-        public ActionStoreOrUpdate(AbstractWallet w) {
-            this.w = w;
-        }
-    }
-    
-    // May be used to delete a stored Wallet on another participant
-    public static class ActionInvalidate implements Serializable {
-        public final String name;
-        public ActionInvalidate(String name) {
-            this.name = name;
-        }
-    }
-    
-    // Used to send (positive amount) or retreive money (negative amount) 
-    public static class ActionReceiveTransaction implements Serializable {
-        public final int amount;
-        public ActionReceiveTransaction(int amount) {
-            this.amount = amount;
-        }
-    }
-    
-    // Used to search a Wallet by name, i.e. when we want to 
-    // perform a transaction on it
-    public static class ActionSearchWalletReference implements Serializable {
-        public final String name;
-        public ActionSearchWalletReference(String name) {
-            this.name = name;
-        }
-    }
-    
-    // Used to return a Wallet reference (akka-style string which can 
-    // be transformed to an ActorRef)
-    public static class ActionSearchWalletReferenceAnswer implements Serializable {
-        public final String address;
-        public ActionSearchWalletReferenceAnswer(String address) {
-            this.address = address;
-        }
-    }
-    
-    // Used to search a Wallet by name, i.e. the own wallet if we just 
-    // joined the network; If a receiving participant holds the stored Wallet, 
-    // he returns it, otherwise, he might use gossiping methods to go on 
-    // with the search;
-    // Note: You should also forward the sender (the participant who actually
-    // searches for this Wallet, so that it can be returnd the direct way)
-    public static class ActionSearchMyWallet implements Serializable {
-        public final String name;
-        public ActionSearchMyWallet(String name) {
-            this.name = name;
-        }
-    }
-    
-    // Used to return a searched Wallet
-    public static class ActionSearchMyWalletAnswer implements Serializable {
-        public final AbstractWallet w;
-        public ActionSearchMyWalletAnswer(AbstractWallet w) {
-            this.w = w;
-        }
-    }
-    
-    // Constructor
-    public AbstractWallet(String name) {
-        this.name = name;
-    }
-    
-    // Returns the name of this wallet, e.g. "Lieschen Müller"
-    public String getName() {
-        return this.name;
-    }
-    
-    // Returns the akka-style address as String, which 
-    // could be converted to an ActorRef object later
-    public abstract String getAddress();
-    
-    // Performs housekeeping operations, e.g. pushes 
-    // backedUpNeighbor-entries to other neighbors
-    public abstract void leave();
-    
-    // The which receives Action objects
-    public abstract void onReceive(Object message);
-    
-    // Holds references to neighbors that were in 
-    // contact with this wallet during runtime;
-    // The key corresponds to the Wallet's name
-    public transient HashMap<String, ActorRef> knownNeighbors;
-    
-    // Holds references to neighbors this wallet 
-    // synchronizes itself to (the Wallet object);
-    // The key corresponds to the Wallet's name
-    public transient HashMap<String, ActorRef> localNeighbors;
-    
-    // Holds all Wallets from network participants 
-    // which synchronize their state (Wallet object)
-    // with us;
-    // The key corresponds to the Wallet's name
-    public transient HashMap<String, AbstractWallet> backedUpNeighbors;
-    
-    // The name of this wallet (does never change, no 
-    // duplicates in network assumed)
-    public final String name;
-    
-    // The amount this wallet currently holds
-    public int amount;
-    
-}
\ No newline at end of file

Interface/Wallet.java

-import akka.actor.ActorRef;
-import akka.actor.UntypedActor;
-import akka.actor.ActorSystem;
-import akka.actor.Props;
-import akka.actor.Inbox;
-
-import java.io.Serializable;
-
-public class Wallet extends AbstractWallet {
-    
-    public static void main(String[] args) {
-        // Create the 'helloakka' actor system
-        final ActorSystem system = ActorSystem.create("FuCoin");
-
-        // Create the 'greeter' actor
-        final ActorRef greeter = system.actorOf(Props.create(Wallet.class, "Hans Wurst"), "wallet");
-
-        // Create the "actor-in-a-box"
-        final Inbox inbox = Inbox.create(system);
-    }
-    
-    public Wallet(String name)
-    {
-        super(name);
-    }
-
-    public void onReceive(Object message) {
-        // TODO implement
-        
-        /*
-        if (message instanceof ActionReceiveTransaction)
-        {
-            System.out.println("hello, " + ((ActionReceiveTransaction) message).amount;
-        }
-        else if (message instanceof ActionReceiveTransaction) {
-            // Send the current greeting back to the sender
-            getSender().tell(new ActionReceiveTransaction(0.01), getSelf());
-        }
-        else {
-            unhandled(message);
-        }
-        */
-        
-    }
-    
-    public String getAddress() {
-        // TODO implement
-        return "";
-    }
-    
-    public void leave() {
-        // TODO implement
-    }
-    
-}
\ No newline at end of file

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-l.2 W
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-

JavaAkkaFuCoin/thesis_latex_template/1_introduction.tex

-\section{Introduction}
-For a transaction in the FUCoin system we have to make sure, that either
-all operational participants commit the transaction or none of them.
-Each participant has one of two votes for the possible transaction: YES
-or NO. For the transaction to happen all participants have to vote YES,
-so a decision cannot be reversed. The init participant acts as the
-coordinator and sends a 'vote request' to all other participants. After
-a participant receives this request, it responds with either YES or NO.
-In case of NO the decision is already 'Abort'. If all participants vote
-YES, the coordinator decides 'Commit' and sends a commit message to all
-participants. Otherwise it sends an abort message to all participants
-that voted YES.
-\bigskip
-\\
-\\
-\\
-\\
-\includegraphics[width=1.0\textwidth]{pictures/TimelineCorrectTransfer.pdf}

JavaAkkaFuCoin/thesis_latex_template/2_actioninvokesentmoney.aux

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JavaAkkaFuCoin/thesis_latex_template/2_actioninvokesentmoney.tex

-\section{ActionInvokeSentMoney}
-This action is invoked by the graphical user interface of the wallets.
-The goal is to transfer an amount of FUCoins to a given wallet ID.
-If this ID already has a mapping to an ActorRef, an
-ActionInvokeDistributedCommitedTransfer will be send to the supervisor.
-Otherwise a gossip is invoked using the ActionSearchWalletReference
-following by ActionInvokeSentMoney after 200 ms.
-\\
-\begin{lstlisting}
-protected void onAction(ActorRef sender, ActorRef self, UntypedActorContext context,
-                        Wallet wallet) {
-  log(wallet.getKnownNeighbors()+"");
-  if(wallet.getKnownNeighbors().containsKey(name)){
-    wallet.getRemoteSuperVisorActor().tell(
-      new ActionInvokeDistributedCommitedTransfer(self,
-        wallet.getKnownNeighbors().get(name), amount), sender);
-  }else{
-    ActionSearchWalletReference aswr = new ActionSearchWalletReference(name);
-    for(ActorRef neighbor : wallet.getKnownNeighbors().values()){
-      neighbor.tell(aswr, self);
-    }
-    sleep(self, context, 200);
-    self.tell(this, self);
-    }
-}
-\end{lstlisting}

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JavaAkkaFuCoin/thesis_latex_template/3_actioninvokedistributedcommitedtransfer.tex

-\section{ActionInvokeDistributedCommitedTransfer}
-The ActionInvokeDistributedCommitedTransfer creates a
-DistributedCommitedTransferRequest, which contains a random generated
-ID, on the Server with a timout of 500 ms, and stores this to a map
-Long --> Request accoring to the ID. The Timeout is handled by the
-ActionUpdateQueue explained later. The request will spread out to all
-clients that can answer with an acknowledgement or an abort afterwards
-(see below).
-\\
-\begin{lstlisting}
-protected void onAction(ActorRef sender, ActorRef self, UntypedActorContext context,
-                        SuperVisor superVisor) {
-  log("invoke transaction "+source.path().name()+" sends "+amount+" to "
-      +target.path().name());
-  long timeout = System.currentTimeMillis()+500;
-  DistributedCommitedTransferRequest ds =
-    new DistributedCommitedTransferRequest(source,target,timeout);
-  superVisor.addDistributedCommitedTransferRequest(ds);
-  ActionPrepareDistributedCommitedTransfer apdct = 
-    new ActionPrepareDistributedCommitedTransfer(source, target, amount, timeout,
-                                                 ds.getId());
-	for(ActorRef neighbor : superVisor.getKnownNeighbors().values()){
-		neighbor.tell(apdct, self);
-	}
-}
-\end{lstlisting}

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