//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: protected void channelRead0(io.netty.channel.ChannelHandlerContext ctx, final TxPullRequest msg) throws Exception
//JAVA TO C# CONVERTER WARNING: 'final' parameters are ignored unless the option to convert to C# 7.2 'in' parameters is selected:
protected internal override void ChannelRead0(ChannelHandlerContext ctx, TxPullRequest msg)
{
_monitor.increment();
if (msg.PreviousTxId() <= 0)
{
_log.error("Illegal tx pull request");
EndInteraction(ctx, E_INVALID_REQUEST, -1);
return;
}
StoreId localStoreId = _storeIdSupplier.get();
StoreId expectedStoreId = msg.ExpectedStoreId();
long firstTxId = msg.PreviousTxId() + 1;
/*
* This is the minimum transaction id we must send to consider our streaming operation successful. The kernel can
* concurrently prune even future transactions while iterating and the cursor will silently fail on iteration, so
* we need to add our own protection for this reason and also as a generally important sanity check for the fulfillment
* of the consistent recovery contract which requires us to stream transactions at least as far as the time when the
* file copy operation completed.
*/
long txIdPromise = _transactionIdStore.LastCommittedTransactionId;
IOCursor <CommittedTransactionRepresentation> txCursor = GetCursor(txIdPromise, ctx, firstTxId, localStoreId, expectedStoreId);
if (txCursor != null)
{
ChunkedTransactionStream txStream = new ChunkedTransactionStream(_log, localStoreId, firstTxId, txIdPromise, txCursor, _protocol);
// chunked transaction stream ends the interaction internally and closes the cursor
ctx.writeAndFlush(txStream).addListener(f =>
{
if (_log.DebugEnabled || !f.Success)
{
string message = format("Streamed transactions [%d--%d] to %s", firstTxId, txStream.LastTxId(), ctx.channel().remoteAddress());
if (f.Success)
{
_log.debug(message);
}
else
{
_log.warn(message, f.cause());
}
}
});
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @SuppressWarnings("SameParameterValue") private void testTransactionStream(int firstTxId, int lastTxId, int txIdPromise, org.neo4j.causalclustering.catchup.CatchupResult expectedResult) throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
private void TestTransactionStream(int firstTxId, int lastTxId, int txIdPromise, CatchupResult expectedResult)
{
ChunkedTransactionStream txStream = new ChunkedTransactionStream(NullLog.Instance, _storeId, firstTxId, txIdPromise, _cursor, _protocol);
IList <bool> more = new List <bool>();
IList <CommittedTransactionRepresentation> txs = new List <CommittedTransactionRepresentation>();
for (int txId = firstTxId; txId <= lastTxId; txId++)
{
more.Add(true);
txs.Add(Tx(txId));
}
txs.Add(null);
more.Add(false);
when(_cursor.next()).thenAnswer(returnsElementsOf(more));
when(_cursor.get()).thenAnswer(returnsElementsOf(txs));
// when/then
assertFalse(txStream.EndOfInput);
for (int txId = firstTxId; txId <= lastTxId; txId++)
{
assertEquals(ResponseMessageType.TX, txStream.ReadChunk(_allocator));
assertEquals(new TxPullResponse(_storeId, txs[txId - firstTxId]), txStream.ReadChunk(_allocator));
}
assertEquals(ResponseMessageType.TX_STREAM_FINISHED, txStream.ReadChunk(_allocator));
assertEquals(new TxStreamFinishedResponse(expectedResult, lastTxId), txStream.ReadChunk(_allocator));
assertTrue(txStream.EndOfInput);
// when
txStream.Close();
// then
verify(_cursor).close();
}
