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AzureDeploymentQueueBalancer.cs
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AzureDeploymentQueueBalancer.cs
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using System;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;
using Orleans.Runtime.Host;
using Orleans.Configuration;
using Orleans.Streams;
namespace Orleans.Hosting
{
public static class SiloPersistentStreamConfiguratorExtension
{
/// <summary>
/// Stream queue balancer that uses Azure deployment information and silo statuses from Membership oracle for load balancing.
/// Requires silo running in Azure.
/// This Balancer uses both the information about the full set of silos as reported by Azure role code and
/// the information from Membership oracle about currently active (alive) silos and rebalances queues from non active silos.
/// </summary>
public static void UseDynamicAzureDeploymentBalancer(this ISiloPersistentStreamConfigurator configurator,
TimeSpan? siloMaturityPeriod = null)
{
configurator.ConfigurePartitionBalancing<DeploymentBasedQueueBalancerOptions>(
(s, n) => DeploymentBasedQueueBalancer.Create(s, n, new ServiceRuntimeWrapper(s.GetService<ILoggerFactory>())),
options => options.Configure(op =>
{
op.IsFixed = false;
if (siloMaturityPeriod.HasValue)
op.SiloMaturityPeriod = siloMaturityPeriod.Value;
}));
}
/// <summary>
/// Stream queue balancer that uses Azure deployment information for load balancing.
/// Requires silo running in Azure.
/// This Balancer uses both the information about the full set of silos as reported by Azure role code but
/// does NOT use the information from Membership oracle about currently alive silos.
/// That is, it does not rebalance queues based on dynamic changes in the cluster Membership.
/// </summary>
public static void UseStaticAzureDeploymentBalancer(this ISiloPersistentStreamConfigurator configurator,
TimeSpan? siloMaturityPeriod = null)
{
configurator.ConfigurePartitionBalancing<DeploymentBasedQueueBalancerOptions>(
(s, n) => DeploymentBasedQueueBalancer.Create(s, n, new ServiceRuntimeWrapper(s.GetService<ILoggerFactory>())),
options => options.Configure(op =>
{
op.IsFixed = true;
if (siloMaturityPeriod.HasValue)
op.SiloMaturityPeriod = siloMaturityPeriod.Value;
}));
}
}
}