public CacheHandle(
CacheConfig cacheConfig)
{
CacheConfig = cacheConfig;
Cache = Utilities.CreateCache(
cacheConfig.CacheId,
cacheConfig.connectionOptions);
}
internal static AsyncCircuitBreakerPolicy GetAsyncCircuitBreakerPolicy(
RegionConfig regionConfig,
CacheConfig cacheConfig,
INHibernateLogger logger)
{
return(Policy
.Handle <Alachisoft.NCache.Runtime.Exceptions.CacheException>(ex =>
ex.ErrorCode ==
NCacheErrorCodes.NO_SERVER_AVAILABLE)
.CircuitBreakerAsync(
exceptionsAllowedBeforeBreaking:
regionConfig.CircuitBreakerExceptionsAllowed,
durationOfBreak:
TimeSpan.FromSeconds(
regionConfig.CircuitBreakerDurationOfBreak),
onBreak:
(ex, ts, ctx) =>
{
if (logger.IsDebugEnabled())
{
logger.Debug(
$"AsyncCircuitbreaker policy:\n" +
$"\tRegion: {ctx["region"]}" +
$"\tOperation: {ctx["operation"]}" +
$"\tCircuit broken for " +
$"{cacheConfig.CacheId}\n" +
$"\tReason:{ex.Message}");
}
},
onReset: (ctx) =>
{
if (logger.IsDebugEnabled())
{
logger.Debug(
$"AsyncCircuitbreaker policy:\n" +
$"\tRegion: {ctx["region"]}" +
$"\tCircuit reset for {cacheConfig.CacheId}");
}
},
onHalfOpen: () =>
{
if (logger.IsDebugEnabled())
{
logger.Debug(
$"AsyncCircuitbreaker policy:\n" +
$"\tCircuit half-open for" +
$" {cacheConfig.CacheId}");
}
}
));
}
private static void AddCacheConfig(
XmlNode cacheConfigurationNode,
ApplicationConfig applicationConfig)
{
CacheConfig cacheConfig = new CacheConfig();
var regionPrefix =
GetString(cacheConfigurationNode, "region-prefix", false);
if (!string.IsNullOrWhiteSpace(regionPrefix))
{
cacheConfig.RegionPrefix = regionPrefix;
}
cacheConfig.CacheId =
GetString(cacheConfigurationNode, "cache-name", true);
if (applicationConfig.CacheConfigurations.ContainsKey(
cacheConfig.CacheConfigId))
{
throw new ConfigurationErrorsException(
$"Multiple cache configurations with identical cache config id " +
$"{cacheConfig.CacheConfigId} given");
}
var isDefault =
GetBoolean(cacheConfigurationNode, "is-default", false);
if (isDefault.HasValue)
{
cacheConfig.IsDefault = isDefault.Value;
}
cacheConfig.ConnectionTimeout =
GetDouble(cacheConfigurationNode, "connection-timout");
cacheConfig.KeepAliveInterval =
GetDouble(cacheConfigurationNode, "keep-alive-interval");
cacheConfig.EnableKeepAlive =
GetBoolean(cacheConfigurationNode, "enable-keep-alive");
cacheConfig.CommandRetryInterval =
GetDouble(cacheConfigurationNode, "command-retry-interval");
cacheConfig.CommandRetries =
GetInteger(cacheConfigurationNode, "command-retries");
cacheConfig.RetryConnectionDelay =
GetDouble(cacheConfigurationNode, "retry-connection-delay");
cacheConfig.RetryInterval =
GetDouble(cacheConfigurationNode, "retry-interval");
cacheConfig.ConnectionRetries =
GetInteger(cacheConfigurationNode, "connection-retries");
cacheConfig.EnableClientLogs =
GetBoolean(cacheConfigurationNode, "enable-client-logs");
cacheConfig.ClientRequestTimeout =
GetDouble(cacheConfigurationNode, "client-request-timeout");
cacheConfig.LoadBalance =
GetBoolean(cacheConfigurationNode, "load-balance");
cacheConfig.AppName =
GetString(cacheConfigurationNode, "app-name");
cacheConfig.ClientBindIP =
GetString(cacheConfigurationNode, "client-bind-ip");
cacheConfig.LogLevel =
GetNCacheLogLevel(cacheConfigurationNode, "log-level");
cacheConfig.Mode =
GetNCacheIsolationLevel(cacheConfigurationNode, "mode");
cacheConfig.SyncMode =
GetNCacheClientSyncMode(cacheConfigurationNode, "sync-mode");
var user =
GetString(cacheConfigurationNode, "user");
var password =
GetString(cacheConfigurationNode, "password");
if ((string.IsNullOrWhiteSpace(user) &&
!string.IsNullOrWhiteSpace(password)) ||
(!string.IsNullOrWhiteSpace(user) &&
string.IsNullOrWhiteSpace(password)))
{
throw new ConfigurationErrorsException(
$"User name or password is not given with the other given");
}
else if (
!string.IsNullOrWhiteSpace(user) &&
!string.IsNullOrWhiteSpace(password))
{
cacheConfig.UserCredentials = new NCacheCredentials(user, password);
}
var serverNodesRoot =
cacheConfigurationNode.SelectNodes("servers");
if (serverNodesRoot.Count > 1)
{
throw new ConfigurationErrorsException(
$"A cache-configuration section can have only 1 servers section");
}
if (serverNodesRoot.Count == 1)
{
var serverNodes =
serverNodesRoot[0].SelectNodes("server");
if (serverNodes.Count == 0)
{
throw new ConfigurationErrorsException(
"servers subsection empty");
}
else
{
Dictionary <string, int?> serverDict =
new Dictionary <string, int?>();
foreach (XmlNode serverNode in serverNodes)
{
var ipAddress =
GetString(serverNode, "server-ip", true);
var port =
GetInteger(serverNode, "port");
if (!serverDict.ContainsKey(ipAddress))
{
serverDict.Add(ipAddress, port);
}
else
{
throw new ConfigurationErrorsException(
$"Multiple servers with identical ip addresses given.");
}
}
cacheConfig.ServerList = GetNCacheServerInfoList(serverDict);
}
}
applicationConfig.CacheConfigurations.Add(
cacheConfig.CacheConfigId,
cacheConfig);
}
#pragma warning disable 618
public ICache BuildCache(
string regionName,
IDictionary <string, string> properties)
#pragma warning restore 618
{
if (regionName == null)
{
regionName = String.Empty;
}
properties.TryGetValue(
Cfg.Environment.CacheRegionPrefix,
out var regionPrefix);
var parsedRegionPrefix = string.IsNullOrWhiteSpace(regionPrefix) ?
"nhibernate" :
regionPrefix;
RegionConfig regionConfig;
if (applicationConfiguration.CacheRegions.ContainsKey(regionName))
{
regionConfig =
applicationConfiguration.CacheRegions[regionName];
}
else
{
regionConfig = BuildRegionConfiguration(
regionName,
parsedRegionPrefix);
}
var regionCacheId =
regionConfig.CacheId;
if (string.IsNullOrWhiteSpace(regionCacheId))
{
regionConfig.CacheId = GetDefaultCacheId(parsedRegionPrefix);
}
var regionCacheConfigId = $"{parsedRegionPrefix}:{regionConfig.CacheId}";;
CacheConfig cacheConfig =
applicationConfiguration.CacheConfigurations[regionCacheConfigId];
if (!cacheHandles.ContainsKey(regionCacheConfigId))
{
lock (appConfigLocker)
{
if (!cacheHandles.ContainsKey(regionCacheConfigId))
{
cacheHandles.Add(
regionCacheConfigId,
new CacheHandle(
cacheConfig));
}
}
}
return(new NCacheClient(
cacheHandles[regionCacheConfigId],
parsedRegionPrefix,
regionConfig,
properties));
}
