/// <summary>
/// Create stream queue balancer by type requested
/// </summary>
/// <param name="balancerType">queue balancer type to create</param>
/// <param name="strProviderName">name of requesting stream provider</param>
/// <param name="siloStatusOracle">membership services interface.</param>
/// <param name="clusterConfiguration">cluster configuration</param>
/// <param name="runtime">stream provider runtime environment to run in</param>
/// <param name="queueMapper">queue mapper of requesting stream provider</param>
/// <param name="siloMaturityPeriod">Maturity Period of a silo for queue rebalancing purposes</param>
/// <returns>Constructed stream queue balancer</returns>
public static IStreamQueueBalancer Create(
StreamQueueBalancerType balancerType,
string strProviderName,
ISiloStatusOracle siloStatusOracle,
ClusterConfiguration clusterConfiguration,
IStreamProviderRuntime runtime,
IStreamQueueMapper queueMapper,
TimeSpan siloMaturityPeriod)
{
if (string.IsNullOrWhiteSpace(strProviderName))
{
throw new ArgumentNullException("strProviderName");
}
if (siloStatusOracle == null)
{
throw new ArgumentNullException("siloStatusOracle");
}
if (clusterConfiguration == null)
{
throw new ArgumentNullException("clusterConfiguration");
}
if (runtime == null)
{
throw new ArgumentNullException("runtime");
}
if (queueMapper == null)
{
throw new ArgumentNullException("queueMapper");
}
bool isFixed;
switch (balancerType)
{
case StreamQueueBalancerType.ConsistentRingBalancer:
{
// Consider: for now re-use the same ConsistentRingProvider with 1 equally devided range. Remove later.
IConsistentRingProviderForGrains ringProvider = runtime.GetConsistentRingProvider(0, 1);
return new ConsistentRingQueueBalancer(ringProvider, queueMapper);
}
case StreamQueueBalancerType.DynamicAzureDeploymentBalancer:
case StreamQueueBalancerType.StaticAzureDeploymentBalancer:
{
Logger logger = LogManager.GetLogger(typeof(StreamQueueBalancerFactory).Name, LoggerType.Runtime);
var wrapper = AssemblyLoader.LoadAndCreateInstance<IDeploymentConfiguration>(Constants.ORLEANS_AZURE_UTILS_DLL, logger);
isFixed = balancerType == StreamQueueBalancerType.StaticAzureDeploymentBalancer;
return new DeploymentBasedQueueBalancer(siloStatusOracle, wrapper, queueMapper, siloMaturityPeriod, isFixed);
}
case StreamQueueBalancerType.DynamicClusterConfigDeploymentBalancer:
case StreamQueueBalancerType.StaticClusterConfigDeploymentBalancer:
{
IDeploymentConfiguration deploymentConfiguration = new StaticClusterDeploymentConfiguration(clusterConfiguration);
isFixed = balancerType == StreamQueueBalancerType.StaticClusterConfigDeploymentBalancer;
return new DeploymentBasedQueueBalancer(siloStatusOracle, deploymentConfiguration, queueMapper, siloMaturityPeriod, isFixed);
}
default:
{
string error = string.Format("Unsupported balancerType for stream provider. BalancerType: {0}, StreamProvider: {1}", balancerType, strProviderName);
throw new ArgumentOutOfRangeException("balancerType", error);
}
}
}
/// <summary>
/// Create stream queue balancer by type requested
/// </summary>
/// <param name="balancerType">queue balancer type to create</param>
/// <param name="strProviderName">name of requesting stream provider</param>
/// <param name="siloStatusOracle">membership services interface.</param>
/// <param name="clusterConfiguration">cluster configuration</param>
/// <param name="runtime">stream provider runtime environment to run in</param>
/// <param name="queueMapper">queue mapper of requesting stream provider</param>
/// <returns>Constructed stream queue balancer</returns>
public static IStreamQueueBalancer Create(
StreamQueueBalancerType balancerType,
string strProviderName,
ISiloStatusOracle siloStatusOracle,
ClusterConfiguration clusterConfiguration,
IStreamProviderRuntime runtime,
IStreamQueueMapper queueMapper)
{
if (string.IsNullOrWhiteSpace(strProviderName))
{
throw new ArgumentNullException("strProviderName");
}
if (siloStatusOracle == null)
{
throw new ArgumentNullException("siloStatusOracle");
}
if (clusterConfiguration == null)
{
throw new ArgumentNullException("clusterConfiguration");
}
if (runtime == null)
{
throw new ArgumentNullException("runtime");
}
if (queueMapper == null)
{
throw new ArgumentNullException("queueMapper");
}
switch (balancerType)
{
case StreamQueueBalancerType.ConsistentRingBalancer:
{
// Consider: for now re-use the same ConsistentRingProvider with 1 equally devided range. Remove later.
IConsistentRingProviderForGrains ringProvider = runtime.GetConsistentRingProvider(0, 1);
return(new ConsistentRingQueueBalancer(ringProvider, queueMapper));
}
case StreamQueueBalancerType.AzureDeploymentBalancer:
{
TraceLogger logger = TraceLogger.GetLogger(typeof(StreamQueueBalancerFactory).Name, TraceLogger.LoggerType.Runtime);
var wrapper = AssemblyLoader.LoadAndCreateInstance <IDeploymentConfiguration>(Constants.ORLEANS_AZURE_UTILS_DLL, logger);
return(new DeploymentBasedQueueBalancer(siloStatusOracle, wrapper, queueMapper));
}
case StreamQueueBalancerType.StaticClusterDeploymentBalancer:
{
IDeploymentConfiguration deploymentConfiguration = new StaticClusterDeploymentConfiguration(clusterConfiguration);
return(new DeploymentBasedQueueBalancer(siloStatusOracle, deploymentConfiguration, queueMapper));
}
default:
{
string error = string.Format("Unsupported balancerType for stream provider. BalancerType: {0}, StreamProvider: {1}", balancerType, strProviderName);
throw new ArgumentOutOfRangeException("balancerType", error);
}
}
}