public void Apply(LogEntry entry, Command cmd)
{
var betCmd = cmd as BetOnPonyCommand;
if (betCmd != null)
{
var odd = OddsReference.AvailableOdds.FirstOrDefault(o => o.OddId == betCmd.OddId);
if (odd != null)
{
this.Bets.Add(new Bet() { Odd = odd, UserId = betCmd.UserId, AmountOfMoney = betCmd.AmountOfMoney });
cmd.CommandResult = new { Result = "Success" };
}
else
{
// TODO: figure out what to do if the odd is invalid
}
}
var getCmd = cmd as GetAllBetsCommand;
if (getCmd != null)
{
cmd.CommandResult = this.Bets;
}
this.LastAppliedIndex = cmd.AssignedIndex;
}
public byte[] Serialize(Command cmd)
{
using (var memoryStream = new MemoryStream())
{
using (var streamWriter = new StreamWriter(memoryStream))
{
_serializer.Serialize(streamWriter, cmd);
streamWriter.Flush();
}
return memoryStream.ToArray();
}
}
public void Apply(LogEntry entry, Command cmd)
{
if (LastAppliedIndex >= entry.Index)
throw new InvalidOperationException("Already applied " + entry.Index);
LastAppliedIndex = entry.Index;
var dicCommand = cmd as DictionaryCommand;
if (dicCommand != null)
dicCommand.Apply(Data);
}
public void Apply(LogEntry entry, Command cmd)
{
var batch = cmd as OperationBatchCommand;
if (batch != null)
{
Apply(batch.Batch, cmd.AssignedIndex);
return;
}
var get = cmd as GetCommand;
if (get != null)
{
cmd.CommandResult = Read(get.Key);
}
// have to apply even get command so we'll keep track of the last applied index
Apply(Enumerable.Empty<KeyValueOperation>(), cmd.AssignedIndex);
}
public void AppendCommand(Command command)
{
var index = Engine.PersistentState.AppendToLeaderLog(command);
_matchIndexes[Engine.Name] = index;
_nextIndexes[Engine.Name] = index + 1;
_lastContact[Engine.Name] = DateTime.UtcNow;
if (Engine.CurrentTopology.QuorumSize == 1)
{
CommitEntries(null, index);
command.Complete();
return;
}
if (command.Completion != null)
_pendingCommands.Enqueue(command);
}
public long AppendToLeaderLog(Command command)
{
if (CurrentTerm == 0)
throw new InvalidOperationException("Cannot append entries in term 0");
using (var tx = _env.NewTransaction(TransactionFlags.ReadWrite))
{
var logs = tx.ReadTree(LogsTreeName);
var terms = tx.ReadTree(EntryTermsTreeName);
var nextEntryId = GetLastEntryNumber(logs, tx) + 1;
var key = new Slice(EndianBitConverter.Big.GetBytes(nextEntryId));
command.AssignedIndex = nextEntryId;
var commandEntry = CommandSerializer.Serialize(command);
logs.Add(key, commandEntry);
terms.Add(key, BitConverter.GetBytes(CurrentTerm));
var topologyChangeCommand = command as TopologyChangeCommand;
if (topologyChangeCommand != null)
{
SetCurrentTopologyInternal(topologyChangeCommand.Requested, nextEntryId, tx);
}
tx.Commit();
return nextEntryId;
}
}
protected virtual void OnCommitApplied(Command cmd)
{
var handler = CommitApplied;
if (handler != null)
{
try
{
handler(cmd);
}
catch (Exception e)
{
_log.Error("Error on raising CommitApplied event", e);
}
}
}
public void AppendCommand(Command command)
{
if (command == null) throw new ArgumentNullException("command");
var leaderStateBehavior = StateBehavior as LeaderStateBehavior;
if (leaderStateBehavior == null || leaderStateBehavior.State != RaftEngineState.Leader)
throw new NotLeadingException("Command can be appended only on leader node. This node behavior type is " +
StateBehavior.GetType().Name)
{
CurrentLeader = CurrentLeader
};
leaderStateBehavior.AppendCommand(command);
}