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Added BdfIncomingMessageHook.

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akwizgran
2016-03-08 16:06:40 +00:00
parent ab7cc13014
commit d308a30d05
1 changed files with 59 additions and 0 deletions
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59
briar-core/src/org/briarproject/clients/BdfIncomingMessageHook.java Normal file
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package org.briarproject.clients;
import org.briarproject.api.FormatException;
import org.briarproject.api.clients.ClientHelper;
import org.briarproject.api.clients.MessageQueueManager.IncomingQueueMessageHook;
import org.briarproject.api.clients.QueueMessage;
import org.briarproject.api.data.BdfDictionary;
import org.briarproject.api.data.BdfList;
import org.briarproject.api.data.MetadataParser;
import org.briarproject.api.db.DbException;
import org.briarproject.api.db.Metadata;
import org.briarproject.api.db.Transaction;
import org.briarproject.api.sync.Message;
import org.briarproject.api.sync.ValidationManager.IncomingMessageHook;
import org.briarproject.api.system.Clock;
import static org.briarproject.api.clients.QueueMessage.QUEUE_MESSAGE_HEADER_LENGTH;
import static org.briarproject.api.sync.SyncConstants.MESSAGE_HEADER_LENGTH;
public abstract class BdfIncomingMessageHook implements IncomingMessageHook,
IncomingQueueMessageHook {
protected final ClientHelper clientHelper;
protected final MetadataParser metadataParser;
protected BdfIncomingMessageHook(ClientHelper clientHelper,
MetadataParser metadataParser, Clock clock) {
this.clientHelper = clientHelper;
this.metadataParser = metadataParser;
}
protected abstract void incomingMessage(Transaction txn, BdfList message,
BdfDictionary meta) throws DbException, FormatException;
@Override
public void incomingMessage(Transaction txn, Message m, Metadata meta)
throws DbException {
incomingMessage(txn, m, meta, MESSAGE_HEADER_LENGTH);
}
@Override
public void incomingMessage(Transaction txn, QueueMessage q, Metadata meta)
throws DbException {
incomingMessage(txn, q, meta, QUEUE_MESSAGE_HEADER_LENGTH);
}
private void incomingMessage(Transaction txn, Message m, Metadata meta,
int headerLength) throws DbException {
try {
byte[] raw = m.getRaw();
BdfList message = clientHelper.toList(raw, headerLength,
raw.length - headerLength);
BdfDictionary metaDictionary = metadataParser.parse(meta);
incomingMessage(txn, message, metaDictionary);
} catch (FormatException e) {
throw new DbException(e);
}
}
}