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Created a new storage entry interface,

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Let the storage entry class and the rest of this system use this interface
This commit is contained in:
Joshua Kissoon 2014-05-23 22:28:21 +05:30
parent 9fb139571a
commit a1faffb4d9
14 changed files with 65 additions and 44 deletions
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5
src/kademlia/JKademliaNode.java
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@ -15,6 +15,7 @@ import kademlia.dht.GetParameter;
import kademlia.dht.DHT;
import kademlia.dht.KadContent;
import kademlia.dht.KademliaDHT;
import kademlia.dht.KademliaStorageEntry;
import kademlia.dht.StorageEntry;
import kademlia.exceptions.ContentNotFoundException;
import kademlia.exceptions.RoutingException;
@ -265,7 +266,7 @@ public class JKademliaNode implements KademliaNode
}
@Override
public int put(StorageEntry entry) throws IOException
public int put(KademliaStorageEntry entry) throws IOException
{
StoreOperation sop = new StoreOperation(this.server, this, entry, this.dht, this.config);
sop.execute();
@ -281,7 +282,7 @@ public class JKademliaNode implements KademliaNode
}
@Override
public StorageEntry get(GetParameter param) throws NoSuchElementException, IOException, ContentNotFoundException
public KademliaStorageEntry get(GetParameter param) throws NoSuchElementException, IOException, ContentNotFoundException
{
if (this.dht.contains(param))
{

6
src/kademlia/KademliaNode.java
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@ -5,7 +5,7 @@ import java.util.NoSuchElementException;
import kademlia.dht.GetParameter;
import kademlia.dht.KadContent;
import kademlia.dht.KademliaDHT;
import kademlia.dht.StorageEntry;
import kademlia.dht.KademliaStorageEntry;
import kademlia.exceptions.ContentNotFoundException;
import kademlia.exceptions.RoutingException;
import kademlia.node.Node;
@ -86,7 +86,7 @@ public interface KademliaNode
* @throws java.io.IOException
*
*/
public int put(StorageEntry entry) throws IOException;
public int put(KademliaStorageEntry entry) throws IOException;
/**
* Store a content on the local node's DHT
@ -107,7 +107,7 @@ public interface KademliaNode
* @throws java.io.IOException
* @throws kademlia.exceptions.ContentNotFoundException
*/
public StorageEntry get(GetParameter param) throws NoSuchElementException, IOException, ContentNotFoundException;
public KademliaStorageEntry get(GetParameter param) throws NoSuchElementException, IOException, ContentNotFoundException;
/**
* Allow the user of the System to call refresh even out of the normal Kad refresh timing

12
src/kademlia/dht/DHT.java
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@ -26,7 +26,7 @@ public class DHT implements KademliaDHT
{
private transient StoredContentManager contentManager;
private transient KadSerializer<StorageEntry> serializer = null;
private transient KadSerializer<KademliaStorageEntry> serializer = null;
private transient KadConfiguration config;
private final String ownerId;
@ -51,7 +51,7 @@ public class DHT implements KademliaDHT
}
@Override
public KadSerializer<StorageEntry> getSerializer()
public KadSerializer<KademliaStorageEntry> getSerializer()
{
if (null == serializer)
{
@ -62,7 +62,7 @@ public class DHT implements KademliaDHT
}
@Override
public boolean store(StorageEntry content) throws IOException
public boolean store(KademliaStorageEntry content) throws IOException
{
/* Lets check if we have this content and it's the updated version */
if (this.contentManager.contains(content.getContentMetadata()))
@ -130,7 +130,7 @@ public class DHT implements KademliaDHT
}
@Override
public StorageEntry retrieve(KademliaId key, int hashCode) throws FileNotFoundException, IOException, ClassNotFoundException
public KademliaStorageEntry retrieve(KademliaId key, int hashCode) throws FileNotFoundException, IOException, ClassNotFoundException
{
String folder = this.getContentStorageFolderName(key);
DataInputStream din = new DataInputStream(new FileInputStream(folder + File.separator + hashCode + ".kct"));
@ -144,7 +144,7 @@ public class DHT implements KademliaDHT
}
@Override
public StorageEntry get(StorageEntryMetadata entry) throws IOException, NoSuchElementException
public KademliaStorageEntry get(StorageEntryMetadata entry) throws IOException, NoSuchElementException
{
try
{
@ -164,7 +164,7 @@ public class DHT implements KademliaDHT
}
@Override
public StorageEntry get(GetParameter param) throws NoSuchElementException, IOException
public KademliaStorageEntry get(GetParameter param) throws NoSuchElementException, IOException
{
/* Load a KadContent if any exist for the given criteria */
try

10
src/kademlia/dht/KademliaDHT.java
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@ -35,7 +35,7 @@ public interface KademliaDHT
*
* @return The new ContentSerializer
*/
public KadSerializer<StorageEntry> getSerializer();
public KadSerializer<KademliaStorageEntry> getSerializer();
/**
* Handle storing content locally
@ -46,7 +46,7 @@ public interface KademliaDHT
*
* @throws java.io.IOException
*/
public boolean store(StorageEntry content) throws IOException;
public boolean store(KademliaStorageEntry content) throws IOException;
public boolean store(KadContent content) throws IOException;
@ -61,7 +61,7 @@ public interface KademliaDHT
* @throws java.io.FileNotFoundException
* @throws java.lang.ClassNotFoundException
*/
public StorageEntry retrieve(KademliaId key, int hashCode) throws FileNotFoundException, IOException, ClassNotFoundException;
public KademliaStorageEntry retrieve(KademliaId key, int hashCode) throws FileNotFoundException, IOException, ClassNotFoundException;
/**
* Check if any content for the given criteria exists in this DHT
@ -81,7 +81,7 @@ public interface KademliaDHT
*
* @throws java.io.IOException
*/
public StorageEntry get(StorageEntryMetadata entry) throws IOException, NoSuchElementException;
public KademliaStorageEntry get(StorageEntryMetadata entry) throws IOException, NoSuchElementException;
/**
* Get the StorageEntry for the content if any exist.
@ -92,7 +92,7 @@ public interface KademliaDHT
*
* @throws java.io.IOException
*/
public StorageEntry get(GetParameter param) throws NoSuchElementException, IOException;
public KademliaStorageEntry get(GetParameter param) throws NoSuchElementException, IOException;
/**
* Delete a content from local storage

17
src/kademlia/dht/KademliaStorageEntry.java Normal file
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@ -0,0 +1,17 @@
package kademlia.dht;
/**
* A StorageEntry interface for the storage entry class used to store a content on the DHT
*
* @author Joshua Kissoon
* @since 20140523
*/
public interface KademliaStorageEntry
{
public void setContent(final byte[] data);
public byte[] getContent();
public StorageEntryMetadata getContentMetadata();
}

5
src/kademlia/dht/StorageEntry.java
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@ -6,7 +6,7 @@ package kademlia.dht;
* @author Joshua Kissoon
* @since 20140402
*/
public class StorageEntry
public class StorageEntry implements KademliaStorageEntry
{
private String content;
@ -23,16 +23,19 @@ public class StorageEntry
this.metadata = metadata;
}
@Override
public final void setContent(final byte[] data)
{
this.content = new String(data);
}
@Override
public final byte[] getContent()
{
return this.content.getBytes();
}
@Override
public final StorageEntryMetadata getContentMetadata()
{
return this.metadata;

12
src/kademlia/message/ContentMessage.java
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@ -3,7 +3,7 @@ package kademlia.message;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import kademlia.dht.StorageEntry;
import kademlia.dht.KademliaStorageEntry;
import kademlia.node.Node;
import kademlia.util.serializer.JsonSerializer;
@ -18,7 +18,7 @@ public class ContentMessage implements Message
public static final byte CODE = 0x04;
private StorageEntry content;
private KademliaStorageEntry content;
private Node origin;
/**
@ -26,7 +26,7 @@ public class ContentMessage implements Message
* @param content The content to be stored
*
*/
public ContentMessage(Node origin, StorageEntry content)
public ContentMessage(Node origin, KademliaStorageEntry content)
{
this.content = content;
this.origin = origin;
@ -43,7 +43,7 @@ public class ContentMessage implements Message
this.origin.toStream(out);
/* Serialize the KadContent, then send it to the stream */
new JsonSerializer<StorageEntry>().write(content, out);
new JsonSerializer<KademliaStorageEntry>().write(content, out);
}
@Override
@ -53,7 +53,7 @@ public class ContentMessage implements Message
try
{
this.content = new JsonSerializer<StorageEntry>().read(in);
this.content = new JsonSerializer<KademliaStorageEntry>().read(in);
}
catch (ClassNotFoundException e)
{
@ -66,7 +66,7 @@ public class ContentMessage implements Message
return this.origin;
}
public StorageEntry getContent()
public KademliaStorageEntry getContent()
{
return this.content;
}

12
src/kademlia/message/StoreContentMessage.java
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@ -3,7 +3,7 @@ package kademlia.message;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import kademlia.dht.StorageEntry;
import kademlia.dht.KademliaStorageEntry;
import kademlia.node.Node;
import kademlia.util.serializer.JsonSerializer;
@ -18,7 +18,7 @@ public class StoreContentMessage implements Message
public static final byte CODE = 0x08;
private StorageEntry content;
private KademliaStorageEntry content;
private Node origin;
/**
@ -26,7 +26,7 @@ public class StoreContentMessage implements Message
* @param content The content to be stored
*
*/
public StoreContentMessage(Node origin, StorageEntry content)
public StoreContentMessage(Node origin, KademliaStorageEntry content)
{
this.content = content;
this.origin = origin;
@ -43,7 +43,7 @@ public class StoreContentMessage implements Message
this.origin.toStream(out);
/* Serialize the KadContent, then send it to the stream */
new JsonSerializer<StorageEntry>().write(content, out);
new JsonSerializer<KademliaStorageEntry>().write(content, out);
}
@Override
@ -52,7 +52,7 @@ public class StoreContentMessage implements Message
this.origin = new Node(in);
try
{
this.content = new JsonSerializer<StorageEntry>().read(in);
this.content = new JsonSerializer<KademliaStorageEntry>().read(in);
}
catch (ClassNotFoundException e)
{
@ -65,7 +65,7 @@ public class StoreContentMessage implements Message
return this.origin;
}
public StorageEntry getContent()
public KademliaStorageEntry getContent()
{
return this.content;
}

8
src/kademlia/operation/ContentLookupOperation.java
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@ -14,7 +14,7 @@ import kademlia.JKademliaNode;
import kademlia.dht.GetParameter;
import kademlia.KadConfiguration;
import kademlia.KadServer;
import kademlia.dht.StorageEntry;
import kademlia.dht.KademliaStorageEntry;
import kademlia.exceptions.ContentNotFoundException;
import kademlia.exceptions.RoutingException;
import kademlia.exceptions.UnknownMessageException;
@ -43,7 +43,7 @@ public class ContentLookupOperation implements Operation, Receiver
private final KadServer server;
private final JKademliaNode localNode;
private StorageEntry contentFound = null;
private KademliaStorageEntry contentFound = null;
private final KadConfiguration config;
private final ContentLookupMessage lookupMessage;
@ -253,7 +253,7 @@ public class ContentLookupOperation implements Operation, Receiver
this.localNode.getRoutingTable().insert(msg.getOrigin());
/* Get the Content and check if it satisfies the required parameters */
StorageEntry content = msg.getContent();
KademliaStorageEntry content = msg.getContent();
this.contentFound = content;
this.isContentFound = true;
}
@ -320,7 +320,7 @@ public class ContentLookupOperation implements Operation, Receiver
*
* @throws kademlia.exceptions.ContentNotFoundException
*/
public StorageEntry getContentFound() throws ContentNotFoundException
public KademliaStorageEntry getContentFound() throws ContentNotFoundException
{
if (this.isContentFound)
{

6
src/kademlia/operation/StoreOperation.java
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@ -6,7 +6,7 @@ import kademlia.JKademliaNode;
import kademlia.KadConfiguration;
import kademlia.KadServer;
import kademlia.dht.KademliaDHT;
import kademlia.dht.StorageEntry;
import kademlia.dht.KademliaStorageEntry;
import kademlia.message.Message;
import kademlia.message.StoreContentMessage;
import kademlia.node.Node;
@ -22,7 +22,7 @@ public class StoreOperation implements Operation
private final KadServer server;
private final JKademliaNode localNode;
private final StorageEntry storageEntry;
private final KademliaStorageEntry storageEntry;
private final KademliaDHT localDht;
private final KadConfiguration config;
@ -33,7 +33,7 @@ public class StoreOperation implements Operation
* @param localDht The local DHT
* @param config
*/
public StoreOperation(KadServer server, JKademliaNode localNode, StorageEntry storageEntry, KademliaDHT localDht, KadConfiguration config)
public StoreOperation(KadServer server, JKademliaNode localNode, KademliaStorageEntry storageEntry, KademliaDHT localDht, KadConfiguration config)
{
this.server = server;
this.localNode = localNode;

4
src/kademlia/simulations/ContentSendingTest.java
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@ -4,7 +4,7 @@ import java.io.IOException;
import java.util.UUID;
import kademlia.dht.GetParameter;
import kademlia.JKademliaNode;
import kademlia.dht.StorageEntry;
import kademlia.dht.KademliaStorageEntry;
import kademlia.exceptions.ContentNotFoundException;
import kademlia.node.KademliaId;
@ -47,7 +47,7 @@ public class ContentSendingTest
GetParameter gp = new GetParameter(c.getKey(), DHTContentImpl.TYPE);
gp.setOwnerId(c.getOwnerId());
System.out.println("Get Parameter: " + gp);
StorageEntry conte = kad2.get(gp);
KademliaStorageEntry conte = kad2.get(gp);
System.out.println("Content Found: " + new DHTContentImpl().fromSerializedForm(conte.getContent()));
System.out.println("Content Metadata: " + conte.getContentMetadata());

4
src/kademlia/simulations/ContentUpdatingTest.java
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@ -3,7 +3,7 @@ package kademlia.simulations;
import java.io.IOException;
import kademlia.dht.GetParameter;
import kademlia.JKademliaNode;
import kademlia.dht.StorageEntry;
import kademlia.dht.KademliaStorageEntry;
import kademlia.exceptions.ContentNotFoundException;
import kademlia.node.KademliaId;
@ -36,7 +36,7 @@ public class ContentUpdatingTest
GetParameter gp = new GetParameter(c.getKey(), DHTContentImpl.TYPE, c.getOwnerId());
System.out.println("Get Parameter: " + gp);
StorageEntry conte = kad2.get(gp);
KademliaStorageEntry conte = kad2.get(gp);
System.out.println("Content Found: " + new DHTContentImpl().fromSerializedForm(conte.getContent()));
System.out.println("Content Metadata: " + conte.getContentMetadata());

4
src/kademlia/simulations/RefreshOperationTest.java
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@ -3,7 +3,7 @@ package kademlia.simulations;
import java.io.IOException;
import kademlia.dht.GetParameter;
import kademlia.JKademliaNode;
import kademlia.dht.StorageEntry;
import kademlia.dht.KademliaStorageEntry;
import kademlia.exceptions.ContentNotFoundException;
import kademlia.node.KademliaId;
@ -33,7 +33,7 @@ public class RefreshOperationTest
GetParameter gp = new GetParameter(c.getKey(), DHTContentImpl.TYPE);
gp.setType(DHTContentImpl.TYPE);
gp.setOwnerId(c.getOwnerId());
StorageEntry conte = kad2.get(gp);
KademliaStorageEntry conte = kad2.get(gp);
kad2.refresh();
}

4
src/kademlia/simulations/SaveStateTest2.java
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@ -2,7 +2,7 @@ package kademlia.simulations;
import kademlia.JKademliaNode;
import kademlia.dht.GetParameter;
import kademlia.dht.StorageEntry;
import kademlia.dht.KademliaStorageEntry;
import kademlia.node.KademliaId;
/**
@ -52,7 +52,7 @@ public class SaveStateTest2
/* Trying to get a content stored on the restored node */
GetParameter gp = new GetParameter(c.getKey(), kad2.getOwnerId(), c.getType());
StorageEntry content = kad2.get(gp);
KademliaStorageEntry content = kad2.get(gp);
DHTContentImpl cc = new DHTContentImpl().fromSerializedForm(content.getContent());
System.out.println("Content received: " + cc);
}