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Synchronisation API and related refactorings / improvements 

-> lets you synchronize with the Bitmessage network without staying connected
This commit is contained in:
Christian Basler 2015-10-07 21:50:41 +02:00
parent c3fdee79ca
commit f9ff22bebe
13 changed files with 154 additions and 49 deletions
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26
demo/src/main/java/ch/dissem/bitmessage/demo/Application.java
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@ -22,7 +22,10 @@ import ch.dissem.bitmessage.entity.Plaintext;
import ch.dissem.bitmessage.entity.payload.Pubkey;
import ch.dissem.bitmessage.networking.DefaultNetworkHandler;
import ch.dissem.bitmessage.ports.MemoryNodeRegistry;
import ch.dissem.bitmessage.repository.*;
import ch.dissem.bitmessage.repository.JdbcAddressRepository;
import ch.dissem.bitmessage.repository.JdbcConfig;
import ch.dissem.bitmessage.repository.JdbcInventory;
import ch.dissem.bitmessage.repository.JdbcMessageRepository;
import ch.dissem.bitmessage.security.bc.BouncySecurity;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -50,18 +53,19 @@ public class Application {
.networkHandler(new DefaultNetworkHandler())
.security(new BouncySecurity())
.port(48444)
.listener(new BitmessageContext.Listener() {
@Override
public void receive(Plaintext plaintext) {
try {
System.out.println(new String(plaintext.getMessage(), "UTF-8"));
} catch (UnsupportedEncodingException e) {
LOG.error(e.getMessage(), e);
}
}
})
.build();
ctx.startup(new BitmessageContext.Listener() {
@Override
public void receive(Plaintext plaintext) {
try {
System.out.println(new String(plaintext.getMessage(), "UTF-8"));
} catch (UnsupportedEncodingException e) {
LOG.error(e.getMessage(), e);
}
}
});
ctx.startup();
scanner = new Scanner(System.in);

26
domain/src/main/java/ch/dissem/bitmessage/BitmessageContext.java
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@ -31,6 +31,7 @@ import ch.dissem.bitmessage.utils.Property;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.InetAddress;
import java.util.Arrays;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
@ -62,10 +63,14 @@ public class BitmessageContext {
private final InternalContext ctx;
private Listener listener;
private final Listener listener;
private final NetworkHandler.MessageListener networkListener;
private BitmessageContext(Builder builder) {
ctx = new InternalContext(builder);
listener = builder.listener;
networkListener = new DefaultMessageListener(ctx, listener);
// As this thread is used for parts that do POW, which itself uses parallel threads, only
// one should be executed at any time.
pool = Executors.newFixedThreadPool(1);
@ -179,15 +184,22 @@ public class BitmessageContext {
);
}
public void startup(Listener listener) {
this.listener = listener;
ctx.getNetworkHandler().start(new DefaultMessageListener(ctx, listener));
public void startup() {
ctx.getNetworkHandler().start(networkListener);
}
public void shutdown() {
ctx.getNetworkHandler().stop();
}
public void synchronize(InetAddress host, int port, long timeoutInSeconds) {
ctx.getNetworkHandler().synchronize(host, port, networkListener, timeoutInSeconds);
}
public void cleanup() {
ctx.getInventory().cleanup();
}
public boolean isRunning() {
return ctx.getNetworkHandler().isRunning();
}
@ -268,6 +280,7 @@ public class BitmessageContext {
ProofOfWorkEngine proofOfWorkEngine;
Security security;
MessageCallback messageCallback;
Listener listener;
public Builder() {
}
@ -317,6 +330,11 @@ public class BitmessageContext {
return this;
}
public Builder listener(Listener listener) {
this.listener = listener;
return this;
}
public BitmessageContext build() {
nonNull("inventory", inventory);
nonNull("nodeRegistry", nodeRegistry);

2
domain/src/main/java/ch/dissem/bitmessage/InternalContext.java
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@ -82,7 +82,7 @@ public class InternalContext {
streams.add(1L);
}
init(inventory, nodeRegistry, networkHandler, addressRepository, messageRepository, proofOfWorkEngine);
init(security, inventory, nodeRegistry, networkHandler, addressRepository, messageRepository, proofOfWorkEngine);
for (BitmessageAddress identity : addressRepository.getIdentities()) {
streams.add(identity.getStream());
}

2
domain/src/main/java/ch/dissem/bitmessage/ports/Inventory.java
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@ -36,5 +36,7 @@ public interface Inventory {
void storeObject(ObjectMessage object);
boolean contains(ObjectMessage object);
void cleanup();
}

55
domain/src/main/java/ch/dissem/bitmessage/ports/MemoryNodeRegistry.java
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@ -34,38 +34,43 @@ import static java.util.Collections.newSetFromMap;
public class MemoryNodeRegistry implements NodeRegistry {
private static final Logger LOG = LoggerFactory.getLogger(MemoryNodeRegistry.class);
private final Map<Long, Set<NetworkAddress>> stableNodes = new HashMap<>();
private final Map<Long, Set<NetworkAddress>> stableNodes = new ConcurrentHashMap<>();
private final Map<Long, Set<NetworkAddress>> knownNodes = new ConcurrentHashMap<>();
public MemoryNodeRegistry() {
try (InputStream in = getClass().getClassLoader().getResourceAsStream("nodes.txt")) {
Scanner scanner = new Scanner(in);
long stream = 0;
Set<NetworkAddress> streamSet = null;
while (scanner.hasNext()) {
try {
String line = scanner.nextLine().trim();
if (line.startsWith("#") || line.isEmpty()) {
// Ignore
continue;
}
if (line.startsWith("[stream")) {
stream = Long.parseLong(line.substring(8, line.lastIndexOf(']')));
streamSet = new HashSet<>();
stableNodes.put(stream, streamSet);
} else if (streamSet != null) {
int portIndex = line.lastIndexOf(':');
InetAddress inetAddress = InetAddress.getByName(line.substring(0, portIndex));
int port = Integer.valueOf(line.substring(portIndex + 1));
streamSet.add(new NetworkAddress.Builder().ip(inetAddress).port(port).stream(stream).build());
new Thread(new Runnable() {
@Override
public void run() {
try (InputStream in = getClass().getClassLoader().getResourceAsStream("nodes.txt")) {
Scanner scanner = new Scanner(in);
long stream = 0;
Set<NetworkAddress> streamSet = null;
while (scanner.hasNext()) {
try {
String line = scanner.nextLine().trim();
if (line.startsWith("#") || line.isEmpty()) {
// Ignore
continue;
}
if (line.startsWith("[stream")) {
stream = Long.parseLong(line.substring(8, line.lastIndexOf(']')));
streamSet = new HashSet<>();
stableNodes.put(stream, streamSet);
} else if (streamSet != null) {
int portIndex = line.lastIndexOf(':');
InetAddress inetAddress = InetAddress.getByName(line.substring(0, portIndex));
int port = Integer.valueOf(line.substring(portIndex + 1));
streamSet.add(new NetworkAddress.Builder().ip(inetAddress).port(port).stream(stream).build());
}
} catch (IOException e) {
LOG.warn(e.getMessage(), e);
}
}
} catch (IOException e) {
LOG.warn(e.getMessage(), e);
throw new RuntimeException(e);
}
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}, "node registry initializer").start();
}
@Override

2
domain/src/main/java/ch/dissem/bitmessage/ports/MessageRepository.java
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@ -28,6 +28,8 @@ public interface MessageRepository {
List<Label> getLabels(Label.Type... types);
int countUnread(Label label);
List<Plaintext> findMessages(Label label);
List<Plaintext> findMessages(Status status);

8
domain/src/main/resources/nodes.txt
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@ -1,15 +1,19 @@
[stream 1]
[2604:2000:1380:9f:82e:148b:2746:d0c7]:8080
5.45.99.75:8444
75.167.159.54:8444
95.165.168.168:8444
85.180.139.241:8444
158.222.211.81:8080
178.62.12.187:8448
[2604:2000:1380:9f:82e:148b:2746:d0c7]:8080
158.222.211.81:8080
24.188.198.204:8111
109.147.204.113:1195
178.11.46.221:8444
# Add named nodes at the end, as resolving them might take time
dissem.ch:8444
[stream 2]
# none yet

2
networking/src/main/java/ch/dissem/bitmessage/networking/Connection.java
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@ -310,6 +310,8 @@ public class Connection implements Runnable {
try {
LOG.debug("Received object " + objectMessage.getInventoryVector());
security().checkProofOfWork(objectMessage, ctx.getNetworkNonceTrialsPerByte(), ctx.getNetworkExtraBytes());
if (ctx.getInventory().contains(objectMessage))
break;
listener.receive(objectMessage);
ctx.getInventory().storeObject(objectMessage);
// offer object to some random nodes so it gets distributed throughout the network:

6
networking/src/test/java/ch/dissem/bitmessage/networking/NetworkHandlerTest.java
View File

@ -55,8 +55,9 @@ public class NetworkHandlerTest {
.nodeRegistry(new TestNodeRegistry())
.networkHandler(new DefaultNetworkHandler())
.security(new BouncySecurity())
.listener(Mockito.mock(BitmessageContext.Listener.class))
.build();
peer.startup(Mockito.mock(BitmessageContext.Listener.class));
peer.startup();
nodeInventory = new TestInventory();
networkHandler = new DefaultNetworkHandler();
@ -68,13 +69,14 @@ public class NetworkHandlerTest {
.nodeRegistry(new TestNodeRegistry(localhost))
.networkHandler(networkHandler)
.security(new BouncySecurity())
.listener(Mockito.mock(BitmessageContext.Listener.class))
.build();
}
@Test(timeout = 20_000)
public void ensureNodesAreConnecting() {
try {
node.startup(Mockito.mock(BitmessageContext.Listener.class));
node.startup();
Property status;
do {
Thread.yield();

5
networking/src/test/java/ch/dissem/bitmessage/networking/TestInventory.java
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@ -60,6 +60,11 @@ public class TestInventory implements Inventory {
inventory.put(object.getInventoryVector(), object);
}
@Override
public boolean contains(ObjectMessage object) {
return inventory.containsKey(object.getInventoryVector());
}
@Override
public void cleanup() {

18
repositories/src/main/java/ch/dissem/bitmessage/repository/JdbcInventory.java
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@ -24,7 +24,6 @@ import ch.dissem.bitmessage.ports.Inventory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.ByteArrayInputStream;
import java.sql.*;
import java.util.LinkedList;
import java.util.List;
@ -139,6 +138,23 @@ public class JdbcInventory extends JdbcHelper implements Inventory {
}
}
@Override
public boolean contains(ObjectMessage object) {
try (Connection connection = config.getConnection()) {
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery("SELECT count(1) FROM Inventory WHERE hash = X'"
+ object.getInventoryVector() + "'");
if (rs.next()) {
return rs.getInt(1) > 0;
} else {
throw new RuntimeException("Couldn't query if inventory contains " + object.getInventoryVector());
}
} catch (Exception e) {
LOG.error(e.getMessage(), e);
throw new RuntimeException(e);
}
}
@Override
public void cleanup() {
try (Connection connection = config.getConnection()) {

40
repositories/src/main/java/ch/dissem/bitmessage/repository/JdbcMessageRepository.java
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@ -25,7 +25,6 @@ import ch.dissem.bitmessage.ports.MessageRepository;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.*;
@ -86,6 +85,29 @@ public class JdbcMessageRepository extends JdbcHelper implements MessageReposito
return result;
}
@Override
public int countUnread(Label label) {
String where;
if (label != null) {
where = "id IN (SELECT message_id FROM Message_Label WHERE label_id=" + label.getId() + ") AND ";
} else {
where = "";
}
where += "id IN (SELECT message_id FROM Message_Label WHERE label_id IN (" +
"SELECT id FROM Label WHERE type = '" + Label.Type.UNREAD.name() + "'))";
try (Connection connection = config.getConnection()) {
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery("SELECT count(*) FROM Message WHERE " + where);
if (rs.next()) {
return rs.getInt(1);
}
} catch (SQLException e) {
LOG.error(e.getMessage(), e);
}
return 0;
}
@Override
public List<Plaintext> findMessages(Label label) {
return find("id IN (SELECT message_id FROM Message_Label WHERE label_id=" + label.getId() + ")");
@ -230,8 +252,20 @@ public class JdbcMessageRepository extends JdbcHelper implements MessageReposito
@Override
public void remove(Plaintext message) {
try (Connection connection = config.getConnection()) {
Statement stmt = connection.createStatement();
stmt.executeUpdate("DELETE FROM Message WHERE id = " + message.getId());
try {
connection.setAutoCommit(false);
Statement stmt = connection.createStatement();
stmt.executeUpdate("DELETE FROM Message_Label WHERE message_id = " + message.getId());
stmt.executeUpdate("DELETE FROM Message WHERE id = " + message.getId());
connection.commit();
} catch (SQLException e) {
try {
connection.rollback();
} catch (SQLException e1) {
LOG.debug(e1.getMessage(), e);
}
LOG.error(e.getMessage(), e);
}
} catch (SQLException e) {
LOG.error(e.getMessage(), e);
}

11
repositories/src/test/java/ch/dissem/bitmessage/repository/JdbcInventoryTest.java
View File

@ -110,6 +110,17 @@ public class JdbcInventoryTest extends TestBase {
assertNotNull(inventory.getObject(object.getInventoryVector()));
}
@Test
public void testContains() {
ObjectMessage object = getObjectMessage(5, 0, getGetPubkey());
assertFalse(inventory.contains(object));
inventory.storeObject(object);
assertTrue(inventory.contains(object));
}
@Test
public void testCleanup() throws Exception {
assertNotNull(inventory.getObject(inventoryVectorIgnore));