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Delete old transport property updates.

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Some of this code is only needed for backward compatibility - it can be removed when we break compatibility for 1.0.
This commit is contained in:
akwizgran
2017-11-08 09:47:59 +00:00
parent e6b1597fa7
commit 75413b6c86
2 changed files with 80 additions and 17 deletions
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5
bramble-core/src/main/java/org/briarproject/bramble/properties/PropertiesModule.java
View File

@@ -40,9 +40,12 @@ public class PropertiesModule {
@Provides
@Singleton
TransportPropertyManager getTransportPropertyManager(
LifecycleManager lifecycleManager, ContactManager contactManager,
LifecycleManager lifecycleManager,
ValidationManager validationManager, ContactManager contactManager,
TransportPropertyManagerImpl transportPropertyManager) {
lifecycleManager.registerClient(transportPropertyManager);
validationManager.registerIncomingMessageHook(CLIENT_ID,
transportPropertyManager);
contactManager.registerAddContactHook(transportPropertyManager);
contactManager.registerRemoveContactHook(transportPropertyManager);
return transportPropertyManager;

92
bramble-core/src/main/java/org/briarproject/bramble/properties/TransportPropertyManagerImpl.java
View File

@@ -9,8 +9,10 @@ import org.briarproject.bramble.api.contact.ContactManager.AddContactHook;
import org.briarproject.bramble.api.contact.ContactManager.RemoveContactHook;
import org.briarproject.bramble.api.data.BdfDictionary;
import org.briarproject.bramble.api.data.BdfList;
import org.briarproject.bramble.api.data.MetadataParser;
import org.briarproject.bramble.api.db.DatabaseComponent;
import org.briarproject.bramble.api.db.DbException;
import org.briarproject.bramble.api.db.Metadata;
import org.briarproject.bramble.api.db.Transaction;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import org.briarproject.bramble.api.plugin.TransportId;
@@ -19,8 +21,10 @@ import org.briarproject.bramble.api.properties.TransportPropertyManager;
import org.briarproject.bramble.api.sync.Client;
import org.briarproject.bramble.api.sync.Group;
import org.briarproject.bramble.api.sync.GroupId;
import org.briarproject.bramble.api.sync.InvalidMessageException;
import org.briarproject.bramble.api.sync.Message;
import org.briarproject.bramble.api.sync.MessageId;
import org.briarproject.bramble.api.sync.ValidationManager.IncomingMessageHook;
import org.briarproject.bramble.api.system.Clock;
import java.util.HashMap;
@@ -36,20 +40,22 @@ import static org.briarproject.bramble.api.sync.Group.Visibility.SHARED;
@Immutable
@NotNullByDefault
class TransportPropertyManagerImpl implements TransportPropertyManager,
Client, AddContactHook, RemoveContactHook {
Client, AddContactHook, RemoveContactHook, IncomingMessageHook {
private final DatabaseComponent db;
private final ClientHelper clientHelper;
private final MetadataParser metadataParser;
private final ContactGroupFactory contactGroupFactory;
private final Clock clock;
private final Group localGroup;
@Inject
TransportPropertyManagerImpl(DatabaseComponent db,
ClientHelper clientHelper, ContactGroupFactory contactGroupFactory,
Clock clock) {
ClientHelper clientHelper, MetadataParser metadataParser,
ContactGroupFactory contactGroupFactory, Clock clock) {
this.db = db;
this.clientHelper = clientHelper;
this.metadataParser = metadataParser;
this.contactGroupFactory = contactGroupFactory;
this.clock = clock;
localGroup = contactGroupFactory.createLocalGroup(CLIENT_ID);
@@ -84,6 +90,31 @@ class TransportPropertyManagerImpl implements TransportPropertyManager,
db.removeGroup(txn, getContactGroup(c));
}
@Override
public boolean incomingMessage(Transaction txn, Message m, Metadata meta)
throws DbException, InvalidMessageException {
try {
// Find the latest update for this transport, if any
BdfDictionary d = metadataParser.parse(meta);
TransportId t = new TransportId(d.getString("transportId"));
LatestUpdate latest = findLatest(txn, m.getGroupId(), t, false);
if (latest != null) {
if (d.getLong("version") > latest.version) {
// This update is newer - delete the previous update
db.deleteMessage(txn, latest.messageId);
db.deleteMessageMetadata(txn, latest.messageId);
} else {
// We've already received a newer update - delete this one
db.deleteMessage(txn, m.getId());
db.deleteMessageMetadata(txn, m.getId());
}
}
} catch (FormatException e) {
throw new InvalidMessageException(e);
}
return false;
}
@Override
public void addRemoteProperties(Transaction txn, ContactId c,
Map<TransportId, TransportProperties> props) throws DbException {
@@ -115,8 +146,7 @@ class TransportPropertyManagerImpl implements TransportPropertyManager,
Map<TransportId, TransportProperties> local =
new HashMap<TransportId, TransportProperties>();
// Find the latest local update for each transport
Map<TransportId, LatestUpdate> latest = findLatest(txn,
localGroup.getId(), true);
Map<TransportId, LatestUpdate> latest = findLatestLocal(txn);
// Retrieve and parse the latest local properties
for (Entry<TransportId, LatestUpdate> e : latest.entrySet()) {
BdfList message = clientHelper.getMessageAsList(txn,
@@ -234,6 +264,11 @@ class TransportPropertyManagerImpl implements TransportPropertyManager,
long version = latest == null ? 1 : latest.version + 1;
storeMessage(txn, localGroup.getId(), t, merged, version,
true, false);
// Delete the previous update, if any
if (latest != null) {
db.deleteMessage(txn, latest.messageId);
db.deleteMessageMetadata(txn, latest.messageId);
}
// Store the merged properties in each contact's group
for (Contact c : db.getContacts(txn)) {
Group g = getContactGroup(c);
@@ -241,6 +276,11 @@ class TransportPropertyManagerImpl implements TransportPropertyManager,
version = latest == null ? 1 : latest.version + 1;
storeMessage(txn, g.getId(), t, merged, version,
true, true);
// Delete the previous update, if any
if (latest != null) {
db.deleteMessage(txn, latest.messageId);
db.deleteMessageMetadata(txn, latest.messageId);
}
}
}
db.commitTransaction(txn);
@@ -278,20 +318,29 @@ class TransportPropertyManagerImpl implements TransportPropertyManager,
return BdfList.of(t.getString(), version, p);
}
private Map<TransportId, LatestUpdate> findLatest(Transaction txn,
GroupId g, boolean local) throws DbException, FormatException {
private Map<TransportId, LatestUpdate> findLatestLocal(Transaction txn)
throws DbException, FormatException {
// TODO: This can be simplified before 1.0
Map<TransportId, LatestUpdate> latestUpdates =
new HashMap<TransportId, LatestUpdate>();
Map<MessageId, BdfDictionary> metadata =
clientHelper.getMessageMetadataAsDictionary(txn, g);
Map<MessageId, BdfDictionary> metadata = clientHelper
.getMessageMetadataAsDictionary(txn, localGroup.getId());
for (Entry<MessageId, BdfDictionary> e : metadata.entrySet()) {
BdfDictionary meta = e.getValue();
if (meta.getBoolean("local") == local) {
TransportId t = new TransportId(meta.getString("transportId"));
long version = meta.getLong("version");
LatestUpdate latest = latestUpdates.get(t);
if (latest == null || version > latest.version)
latestUpdates.put(t, new LatestUpdate(e.getKey(), version));
TransportId t = new TransportId(meta.getString("transportId"));
long version = meta.getLong("version");
LatestUpdate latest = latestUpdates.get(t);
if (latest == null) {
latestUpdates.put(t, new LatestUpdate(e.getKey(), version));
} else if (version > latest.version) {
// This update is newer - delete the previous one
db.deleteMessage(txn, latest.messageId);
db.deleteMessageMetadata(txn, latest.messageId);
latestUpdates.put(t, new LatestUpdate(e.getKey(), version));
} else {
// We've already found a newer update - delete this one
db.deleteMessage(txn, e.getKey());
db.deleteMessageMetadata(txn, e.getKey());
}
}
return latestUpdates;
@@ -300,6 +349,7 @@ class TransportPropertyManagerImpl implements TransportPropertyManager,
@Nullable
private LatestUpdate findLatest(Transaction txn, GroupId g, TransportId t,
boolean local) throws DbException, FormatException {
// TODO: This can be simplified before 1.0
LatestUpdate latest = null;
Map<MessageId, BdfDictionary> metadata =
clientHelper.getMessageMetadataAsDictionary(txn, g);
@@ -308,8 +358,18 @@ class TransportPropertyManagerImpl implements TransportPropertyManager,
if (meta.getString("transportId").equals(t.getString())
&& meta.getBoolean("local") == local) {
long version = meta.getLong("version");
if (latest == null || version > latest.version)
if (latest == null) {
latest = new LatestUpdate(e.getKey(), version);
} else if (version > latest.version) {
// This update is newer - delete the previous one
db.deleteMessage(txn, latest.messageId);
db.deleteMessageMetadata(txn, latest.messageId);
latest = new LatestUpdate(e.getKey(), version);
} else {
// We've already found a newer update - delete this one
db.deleteMessage(txn, e.getKey());
db.deleteMessageMetadata(txn, e.getKey());
}
}
}
return latest;