public Dictionary <string, string> GetInformation(IInternalCluster cluster, IInternalSession session)
{
var antiPatterns = new Dictionary <string, string>();
var resolvedContactPoints = cluster.Metadata.ResolvedContactPoints;
var contactPointsEndPoints = resolvedContactPoints
.Values
.SelectMany(endPoints => endPoints)
.Select(c => c.GetHostIpEndPointWithFallback())
.ToList();
var contactPointsHosts = cluster
.AllHosts()
.Where(host => (host.ContactPoint != null && resolvedContactPoints.ContainsKey(host.ContactPoint)) ||
contactPointsEndPoints.Contains(host.Address))
.ToList();
if (contactPointsHosts.Select(c => c.Datacenter).Where(dc => dc != null).Distinct().Count() > 1)
{
antiPatterns["contactPointsMultipleDCs"] = "Contact points contain hosts from multiple data centers";
}
var loadBalancingPolicy = cluster.Configuration.Policies.LoadBalancingPolicy;
antiPatterns = ConfigAntiPatternsInfoProvider.AddAntiPatterns(loadBalancingPolicy, antiPatterns);
var retryPolicy = cluster.Configuration.Policies.RetryPolicy;
antiPatterns = ConfigAntiPatternsInfoProvider.AddAntiPatterns(retryPolicy, antiPatterns);
return(antiPatterns);
}
static ConfigAntiPatternsInfoProvider()
{
ConfigAntiPatternsInfoProvider.AntiPatternsProviders = new Dictionary <Type, Func <object, Dictionary <string, string>, Dictionary <string, string> > >
{
{
typeof(DCAwareRoundRobinPolicy),
(obj, antiPatterns) =>
{
var typedPolicy = (DCAwareRoundRobinPolicy)obj;
#pragma warning disable 618
if (typedPolicy.UsedHostsPerRemoteDc > 0)
#pragma warning restore 618
{
antiPatterns["useRemoteHosts"] = "Using remote hosts for fail-over";
}
return(antiPatterns);
}
},
{
#pragma warning disable 618
typeof(DowngradingConsistencyRetryPolicy),
#pragma warning restore 618
(obj, antiPatterns) =>
{
antiPatterns["downgradingConsistency"] = "Downgrading consistency retry policy in use";
return(antiPatterns);
}
},
{
typeof(DefaultLoadBalancingPolicy),
(obj, antiPatterns) =>
{
var typedPolicy = (DefaultLoadBalancingPolicy)obj;
return(ConfigAntiPatternsInfoProvider.AddAntiPatterns(typedPolicy.ChildPolicy, antiPatterns));
}
},
{
typeof(RetryLoadBalancingPolicy),
(obj, antiPatterns) =>
{
var typedPolicy = (RetryLoadBalancingPolicy)obj;
antiPatterns = ConfigAntiPatternsInfoProvider.AddAntiPatterns(typedPolicy.ReconnectionPolicy, antiPatterns);
return(ConfigAntiPatternsInfoProvider.AddAntiPatterns(typedPolicy.LoadBalancingPolicy, antiPatterns));
}
},
{
typeof(TokenAwarePolicy),
(obj, antiPatterns) =>
{
var typedPolicy = (TokenAwarePolicy)obj;
return(ConfigAntiPatternsInfoProvider.AddAntiPatterns(typedPolicy.ChildPolicy, antiPatterns));
}
},
{
typeof(IdempotenceAwareRetryPolicy),
(obj, antiPatterns) =>
{
var typedPolicy = (IdempotenceAwareRetryPolicy)obj;
return(ConfigAntiPatternsInfoProvider.AddAntiPatterns(typedPolicy.ChildPolicy, antiPatterns));
}
},
{
typeof(LoggingRetryPolicy),
(obj, antiPatterns) =>
{
var typedPolicy = (LoggingRetryPolicy)obj;
return(ConfigAntiPatternsInfoProvider.AddAntiPatterns(typedPolicy.ChildPolicy, antiPatterns));
}
},
{
typeof(RetryPolicyExtensions.WrappedExtendedRetryPolicy),
(obj, antiPatterns) =>
{
var typedPolicy = (RetryPolicyExtensions.WrappedExtendedRetryPolicy)obj;
antiPatterns = ConfigAntiPatternsInfoProvider.AddAntiPatterns(typedPolicy.Policy, antiPatterns);
return(ConfigAntiPatternsInfoProvider.AddAntiPatterns(typedPolicy.DefaultPolicy, antiPatterns));
}
}
};
}