/// <summary>
/// Performs the configuration of cache hosts configured in the application configuration file.
/// </summary>
/// <param name="configuration">Configuration data.</param>
/// <param name="currentCacheHostBucket">Current cache host list.</param>
private void PerformCacheHostsFromConfiguration(CacheClientConfigurationSection configuration, CacheHostBucket currentCacheHostBucket)
{
// Get the host redundancy layers from configuration
var hostRedundancyLayers = configuration.HostRedundancyLayers;
// Get the cache hosts from configuration
var cacheHosts = configuration.CacheHosts;
// Sanitize
if (cacheHosts == null)
{
_logger.Info("No hosts configured", "No cache hosts configured in config file");
return;
}
// Assign the cache hosts to buckets in a specified order
foreach (CacheHostElement cacheHost in cacheHosts.OfType <CacheHostElement>().OrderBy(i => i.Address).ThenBy(i => i.Port))
{
// Instantiate a communication client
var communicationClient = new CommunicationClient(cacheHost.Address, cacheHost.Port, configuration.HostReconnectIntervalSeconds * 1000,
configuration.MessageBufferSize, configuration.CommunicationTimeoutSeconds * 1000, configuration.MaximumMessageSizeKB * 1024);
// Hook up the disconnected and reconnected events
communicationClient.Disconnected += OnClientDisconnected;
communicationClient.Reconnected += OnClientReconnected;
// Hook up the message receive event
communicationClient.MessageReceived += ReceiveMessage;
// Add to cache host bucket
currentCacheHostBucket.AddCacheHost(communicationClient);
// check if done with bucket
if (currentCacheHostBucket.Count == hostRedundancyLayers + 1)
{
_cacheHostBuckets.Add(currentCacheHostBucket);
currentCacheHostBucket = new CacheHostBucket();
}
}
// Final safety check for uneven cache host distributions
if (currentCacheHostBucket.Count > 0)
{
_cacheHostBuckets.Add(currentCacheHostBucket);
}
_logger.Info("Cache Host Assignment", string.Format("Assigned {0} cache hosts to {1} cache host buckets ({2} per bucket)", cacheHosts.Count, _cacheHostBuckets.Count, hostRedundancyLayers + 1));
// Now attempt to connect to each host
foreach (var cacheHostBucket in _cacheHostBuckets)
{
cacheHostBucket.PerformActionOnAll(c => c.Connect());
}
}
/// <summary>
/// The constructor.
/// </summary>
/// <param name="configuration">The configuration to use for the cache client.</param>
public CacheClient(CacheClientConfigurationSection configuration)
{
// Sanitize
if (configuration == null)
{
throw new ArgumentNullException("configuration");
}
// Load custom logging
_logger = CustomTypesLoader.LoadLogger(configuration);
// Configure custom serializer
_binarySerializer = CustomTypesLoader.LoadSerializer(configuration);
CacheHostBucket currentCacheHostBucket = new CacheHostBucket();
// checks the auto discover hosts is enabled, in this case hosts configuration will be discarded
if (configuration.AutoDetectCacheHosts)
{
if (configuration.UdpMulticastIp == null)
{
throw new ArgumentNullException("UdpMulticastIp");
}
if (!(configuration.UdpMulticastPort > 0))
{
throw new ArgumentException("UdpMulticastPort");
}
_logger.Info("Launching multicast", "Launching the auto discover thread to discover cache hosts connected...");
_cacheDiscoveryManager = new MulticastUDPCacheHostAutoDetectManager(IPAddress.Parse(configuration.UdpMulticastIp), configuration.UdpMulticastPort);
_multicastThread = new Thread(new ThreadStart(_cacheDiscoveryManager.Run));
_multicastThread.Start();
}
PerformCacheHostsFromConfiguration(configuration, currentCacheHostBucket);
}
/// <summary>
/// The constructor.
/// </summary>
/// <param name="configuration">The programmatically created cache host configuration.</param>
public CacheClient(CacheClientConfigurationSection configuration)
{
// Sanitize
if (configuration == null)
{
throw new ArgumentNullException("configuration");
}
// Load custom logging
_logger = CustomTypesLoader.LoadLogger(configuration);
// Configure custom serializer
_binarySerializer = CustomTypesLoader.LoadSerializer(configuration);
// Get the cache hosts from configuration
var cacheHosts = configuration.CacheHosts;
// Get the cache host reconnect interval from configuration
var hostReconnectIntervalSeconds = configuration.HostReconnectIntervalSeconds;
// Sanitize
if (cacheHosts == null)
{
throw new ConfigurationErrorsException("At least one cache host must be specified in your application's configuration.");
}
// Get the host redundancy layers from configuration
var hostRedundancyLayers = configuration.HostRedundancyLayers;
CacheHostBucket currentCacheHostBucket = new CacheHostBucket();
// Assign the cache hosts to buckets in a specified order
foreach (CacheHostElement cacheHost in cacheHosts.OfType <CacheHostElement>().OrderBy(i => i.Address).ThenBy(i => i.Port))
{
// Instantiate a communication client
var communicationClient = new CommunicationClient(cacheHost.Address, cacheHost.Port, hostReconnectIntervalSeconds * 1000, 1000, 4096);
// Hook up the disconnected and reconnected events
communicationClient.Disconnected += OnClientDisconnected;
communicationClient.Reconnected += OnClientReconnected;
// Hook up the message receive event
communicationClient.MessageReceived += ReceiveMessage;
// Add to cache host bucket
currentCacheHostBucket.AddCacheHost(communicationClient);
// check if done with bucket
if (currentCacheHostBucket.Count == hostRedundancyLayers + 1)
{
_cacheHostBuckets.Add(currentCacheHostBucket);
currentCacheHostBucket = new CacheHostBucket();
}
}
// Final safety check for uneven cache host distributions
if (currentCacheHostBucket.Count > 0)
{
_cacheHostBuckets.Add(currentCacheHostBucket);
}
_logger.Info("Cache Host Assignment", string.Format("Assigned {0} cache hosts to {1} cache host buckets ({2} per bucket)", cacheHosts.Count, _cacheHostBuckets.Count, hostRedundancyLayers + 1));
// Now attempt to connect to each host
foreach (var cacheHostBucket in _cacheHostBuckets)
{
cacheHostBucket.PerformActionOnAll(c => c.Connect());
}
}
