/// <summary>
/// Close closes the store. If wait is true, waits for a graceful shutdown.
/// Once closed, a Store may not be re-opened.
/// </summary>
/// <param name="wait"></param>
public void Close(bool wait)
{
lock (closedMu)
{
if (closed)
{
return;
}
done.Writer.TryComplete();
wg.SignalAndWait();
// XXX CLOSE OTHER CONNECTIONS
dbConn.Close();
dbConn = null;
db = null;
if (raft != null)
{
raft.Stop();
raft = null;
}
raftLog = null;
closed = true;
}
}
/// <summary>
/// Open opens the store. If enableSingle is set, and there are no existing peers,
/// then this node becomes the first node, and therefore leader, of the cluster.
/// </summary>
/// <param name="enableSingle"></param>
public void Open(bool enableSingle)
{
lock (closedMu)
{
if (closed)
{
throw new StoreInvalidStateException();
}
logger.LogInformation($"opening store with node ID {ID}");
logger.LogInformation($"ensuring directory at {Path} exists");
var di = Directory.CreateDirectory(Path);
//di.GetAccessControl().SetAccessRule(new FileSystemAccessRule()) //TODO: Set perms to 0755
// Create underlying database.
createDatabase();
// Get utility connection to database.
dbConn = db.Connect();
conns.Add(defaultConnID, new StoreConnection(dbConn, this, defaultConnID, TimeSpan.Zero, TimeSpan.Zero));
// Is this a brand new node?
var raftLogDbPath = System.IO.Path.Combine(Path, "raft.db");
var newNode = !File.Exists(raftLogDbPath);
raftLog = new Raft.SQLiteLog(raftLogDbPath, new NodeId(ID), Logging.LoggerFactory);
/*
* // Create Raft-compatible network layer.
* raftTn = raft.NewNetworkTransport(NewTransport(ln),
* connectionPoolCount, connectionTimeout, nil);
*
* // Get the Raft configuration for this store.
* var config = raftConfig();
*
* config.LocalID = raft.ServerID(s.raftID);
*
* config.Logger = log.New(os.Stderr, "[raft] ", log.LstdFlags);
*
* // Create the snapshot store. This allows Raft to truncate the log.
* snapshots, err:= raft.NewFileSnapshotStore(s.raftDir, retainSnapshotCount, os.Stderr)
*
* if err != nil {
* return fmt.Errorf("file snapshot store: %s", err)
*
* }
*
* // Create the log store and stable store.
* s.boltStore, err = raftboltdb.NewBoltStore(filepath.Join(s.raftDir, "raft.db"))
*
* if err != nil {
* return fmt.Errorf("new bolt store: %s", err)
*
* }
* s.raftStable = s.boltStore
*
* s.raftLog, err = raft.NewLogCache(raftLogCacheSize, s.boltStore)
*
* if err != nil {
* return fmt.Errorf("new cached store: %s", err)
*
* }
*/
raftPeers = new PeersProvider();
// Instantiate the Raft system.
raft = new Node(this, raftLog, raftSettings, raftPeers, Logging.LoggerFactory);
// ra, err:= raft.NewRaft(config, s, s.raftLog, s.raftStable, snapshots, s.raftTn)
// if err != nil {
// return fmt.Errorf("new raft: %s", err)
// }
/*
*
* if enableSingle && newNode {
* s.logger.Printf("bootstrap needed")
*
*
* configuration:= raft.Configuration{
* Servers: []raft.Server{
* {
* ID: config.LocalID,
* Address: raftTn.LocalAddr(),
* },
* },
* }
* ra.BootstrapCluster(configuration)
*
*
* }
* else
* {
* logger.Printf("no bootstrap needed")
*
*
* }
*
* raft = ra
*/
// Start connection monitoring
checkConnections();
}
}