/// <summary>
/// Schedules a rule to be run over different stamps and environments.
/// </summary>
private void OncePerStamp(Func <SingleStampRuleArguments, IEnumerable <Instantiation> > generator, Watchlist watchlist)
{
foreach (var(stampId, properties) in watchlist.Entries)
{
var environmentConfiguration = _configuration.Environments[stampId.Environment];
var resources = _environmentResources[stampId.Environment];
var configuration = new SingleStampRuleConfiguration(
_clock,
_logger,
_alertNotifier,
resources.KustoQueryClient,
_icmClient,
environmentConfiguration.KustoDatabaseName,
properties.CacheTableName,
stampId);
var request = new SingleStampRuleArguments
{
StampId = stampId,
DynamicStampProperties = properties,
BaseConfiguration = configuration,
EnvironmentResources = resources,
};
foreach (var rule in generator(request))
{
Contract.AssertNotNull(rule.Rule);
_scheduler.Add(rule.Rule, rule.PollingPeriod, rule.ForceRun);
}
}
}
private IEnumerable <Instantiation> GenerateRedisAutoscalingRules(SingleStampRuleArguments arguments)
{
if (!arguments.DynamicStampProperties.RedisAutoscalingEnabled)
{
yield break;
}
var autoscalingAgentConfiguration = new RedisAutoscalingAgent.Configuration();
if (arguments.DynamicStampProperties.RedisAutoscalingMaximumClusterMemoryAllowedMb > 0)
{
autoscalingAgentConfiguration.MaximumClusterMemoryAllowedMb = arguments.DynamicStampProperties.RedisAutoscalingMaximumClusterMemoryAllowedMb;
}
var redisAutoscalingAgent = new RedisAutoscalingAgent(autoscalingAgentConfiguration, arguments.EnvironmentResources.MonitorManagementClient);
var configuration = new RedisAutoscalingRule.Configuration(arguments.BaseConfiguration);
var primaryRedisInstance = RedisInstance
.FromPreloaded(arguments.EnvironmentResources.Azure, arguments.EnvironmentResources.RedisCaches[arguments.StampId.PrimaryRedisName])
.ThrowIfFailure();
var secondaryRedisInstance = RedisInstance
.FromPreloaded(arguments.EnvironmentResources.Azure, arguments.EnvironmentResources.RedisCaches[arguments.StampId.SecondaryRedisName])
.ThrowIfFailure();
yield return(new Instantiation
{
Rule = new RedisAutoscalingRule(configuration, redisAutoscalingAgent, primaryRedisInstance, secondaryRedisInstance),
PollingPeriod = TimeSpan.FromMinutes(10),
});
}
private IEnumerable <Instantiation> GenerateRedisAutoscalingRules(SingleStampRuleArguments arguments)
{
if (!arguments.DynamicStampProperties.RedisAutoscalingEnabled)
{
yield break;
}
if (!arguments.EnvironmentResources.RedisCaches.ContainsKey(arguments.StampId.PrimaryRedisName) || !arguments.EnvironmentResources.RedisCaches.ContainsKey(arguments.StampId.SecondaryRedisName))
{
_logger.Error($"Attempt to create Redis autoscaler for stamp `{arguments.StampId}` failed due to missing Redis instance. Skipping rule");
yield break;
}
var autoscalingAgentConfiguration = new RedisAutoscalingAgent.Configuration();
if (arguments.DynamicStampProperties.RedisAutoscalingMaximumClusterMemoryAllowedMb > 0)
{
autoscalingAgentConfiguration.MaximumClusterMemoryAllowedMb = arguments.DynamicStampProperties.RedisAutoscalingMaximumClusterMemoryAllowedMb;
}
var azureMetricsClient = new AzureMetricsClient(arguments.EnvironmentResources.MonitorManagementClient);
var redisAutoscalingAgent = new RedisAutoscalingAgent(autoscalingAgentConfiguration, azureMetricsClient);
var configuration = new RedisAutoscalingRule.Configuration(arguments.BaseConfiguration);
var primaryRedisInstance = RedisInstance
.FromPreloaded(
arguments.EnvironmentResources.Azure,
arguments.EnvironmentResources.RedisCaches[arguments.StampId.PrimaryRedisName],
readOnly: _configuration.ReadOnly)
.ThrowIfFailure();
var secondaryRedisInstance = RedisInstance
.FromPreloaded(
arguments.EnvironmentResources.Azure,
arguments.EnvironmentResources.RedisCaches[arguments.StampId.SecondaryRedisName],
readOnly: _configuration.ReadOnly)
.ThrowIfFailure();
yield return(new Instantiation
{
Rule = new RedisAutoscalingRule(configuration, redisAutoscalingAgent, primaryRedisInstance, secondaryRedisInstance),
PollingPeriod = TimeSpan.FromMinutes(10),
});
}