public Server(NodeConfig config, ILog log = null)
{
_serviceContainer = new Services(log, config);
_dataContainer = new DataContainer(_serviceContainer);
_config = config;
}
public DataContainer(Profiler profiler, NodeConfig config)
{
_config = config;
Profiler = profiler;
_dataStores = new Dictionary <string, DataStore>();
_knownTypes = new Dictionary <string, TypeDescription>();
_jsonSerializer = JsonSerializer.Create(_schemaSerializerSettings);
_jsonSerializer.Converters.Add(new StringEnumConverter());
}
/// <summary>
/// Initialize an empty datastore from a type description
/// </summary>
/// <param name="typeDescription"></param>
/// <param name="evictionPolicy"></param>
/// <param name="config"></param>
public DataStore(TypeDescription typeDescription, EvictionPolicy evictionPolicy, NodeConfig config)
{
TypeDescription = typeDescription ?? throw new ArgumentNullException(nameof(typeDescription));
EvictionPolicy = evictionPolicy ?? throw new ArgumentNullException(nameof(evictionPolicy));
//initialize the primary key dictionary
_dataByPrimaryKey = new Dictionary <KeyValue, CachedObject>();
//initialize the unique keys dictionaries (une by unique key)
_dataByUniqueKey = new Dictionary <string, Dictionary <KeyValue, CachedObject> >();
foreach (var keyInfo in typeDescription.UniqueKeyFields)
{
_dataByUniqueKey.Add(keyInfo.Name, new Dictionary <KeyValue, CachedObject>());
}
//initialize the indexes (one by index key)
_dataByIndexKey = new Dictionary <string, IndexBase>();
// scalar indexed fields
foreach (var indexField in typeDescription.IndexFields)
{
var index = IndexFactory.CreateIndex(indexField);
_dataByIndexKey.Add(indexField.Name, index);
}
// list indexed fields
foreach (var indexField in typeDescription.ListFields)
{
var index = IndexFactory.CreateIndex(indexField);
_dataByIndexKey.Add(indexField.Name, index);
}
// create the full-text index if required
if (typeDescription.FullText.Count > 0)
{
_fullTextIndex = new FullTextIndex(config.FullTextConfig)
{
// a function that allows the full text engine to find the original line of text
LineProvider = pointer => _dataByPrimaryKey[pointer.PrimaryKey].FullText[pointer.Line]
};
}
}
public Server(NodeConfig config)
{
_dataContainer = new DataContainer(_serverProfiler, config);
_config = config;
}
public bool Start(string instance)
{
try
{
var configFile = Constants.NodeConfigFileName;
if (instance != null)
{
var baseName = configFile.Split('.').FirstOrDefault();
configFile = $"{baseName}_{instance}.json";
}
var nodeConfig = new NodeConfig {TcpPort = Constants.DefaultPort, IsPersistent = true};
if (File.Exists(configFile))
{
try
{
var configFromFile = SerializationHelper.FormattedSerializer.Deserialize<NodeConfig>(
new JsonTextReader(new StringReader(File.ReadAllText(configFile))));
nodeConfig = configFromFile;
HostServices.HostServices.Start(configFromFile.DataPath);
Log.LogInfo("----------------------------------------------------------");
Log.LogInfo($"Reading configuration file {configFile} ");
}
catch (Exception e)
{
Log.LogError($"Error reading configuration file {configFile} : {e.Message}");
}
}
else
{
HostServices.HostServices.Start(nodeConfig.DataPath);
Log.LogWarning($"Configuration file {configFile} not found. Using defaults");
}
_cacheServer = new global::Server.Server(nodeConfig);
_listener = new TcpServerChannel();
_cacheServer.Channel = _listener;
_listener.Init(nodeConfig.TcpPort);
_listener.Start();
var fullDataPath = Path.GetFullPath(nodeConfig.DataPath ?? Constants.DataPath);
var persistentDescription = nodeConfig.IsPersistent ? fullDataPath : " NO";
try
{
Console.Title = $"Cachalot Core on port {nodeConfig.TcpPort} persistent = {persistentDescription}";
}
catch (Exception )
{
//ignore this may throw an exception when run in service mode
}
Log.LogInfo(
$"Starting hosted service on port {nodeConfig.TcpPort} persistent = {persistentDescription}");
_cacheServer.StopRequired += (sender, args) =>
{
HostServices.HostServices.Stop();
Stop();
_stopEvent.Set();
};
_cacheServer.Start();
}
catch (Exception e)
{
Log.LogError($"Failed to start host: {e}");
return false;
}
Log.LogInfo("Host started successfully");
return true;
}