FabricClient.HealthClient.GetNodeHealthAsync Method
Definition
Important
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Overloads
| GetNodeHealthAsync(NodeHealthQueryDescription) |
Asynchronously gets the health of a Service Fabric node by using the specified timeout and cancellation token. |
| GetNodeHealthAsync(String) |
Asynchronously gets the health of a Service Fabric node. |
| GetNodeHealthAsync(String, ClusterHealthPolicy) |
Asynchronously gets the health of a Service Fabric node. |
| GetNodeHealthAsync(NodeHealthQueryDescription, TimeSpan, CancellationToken) |
Asynchronously gets the health of a Service Fabric node by using the specified timeout and cancellation token. |
| GetNodeHealthAsync(String, TimeSpan, CancellationToken) |
Asynchronously gets the health of a Service Fabric node by using the specified timeout and cancellation token. |
| GetNodeHealthAsync(String, ClusterHealthPolicy, TimeSpan, CancellationToken) |
Asynchronously gets the health of a Service Fabric node by using the specified timeout and cancellation token. |
GetNodeHealthAsync(NodeHealthQueryDescription)
Asynchronously gets the health of a Service Fabric node by using the specified timeout and cancellation token.
public System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth> GetNodeHealthAsync (System.Fabric.Description.NodeHealthQueryDescription queryDescription);member this.GetNodeHealthAsync : System.Fabric.Description.NodeHealthQueryDescription -> System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth>Public Function GetNodeHealthAsync (queryDescription As NodeHealthQueryDescription) As Task(Of NodeHealth)Parameters
- queryDescription
- NodeHealthQueryDescription
The query description that defines parameters like health policy, filters etc.
Returns
The health of a Service Fabric node.
Exceptions
The FabricClient object is in a closed state. Dispose of the FabricClient object you are using and instantiate a new FabricClient object.
Returned when a null reference is passed to a method that does not accept it as a valid argument.
Caused by one of the following:
E_INVALIDARG is returned when one or more arguments are not valid.
Caused by one of the following:
OperationTimedOut is returned when the operation takes more than the specified time to complete.
Caused by one of the following:
CommunicationError is returned when a communication error caused the operation to fail.
Caused by one of the following:
ServiceTooBusy is returned when the service is too busy to process the operation.
Caused by one of the following:
E_ACCESSDENIED is returned when the access check has failed for this operation.
Applies to
GetNodeHealthAsync(String)
Asynchronously gets the health of a Service Fabric node.
public System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth> GetNodeHealthAsync (string nodeName);member this.GetNodeHealthAsync : string -> System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth>Public Function GetNodeHealthAsync (nodeName As String) As Task(Of NodeHealth)Parameters
- nodeName
- String
The Service Fabric node name.
Returns
The health of a Service Fabric node.
Exceptions
The FabricClient object is in a closed state. Dispose of the FabricClient object you are using and instantiate a new FabricClient object.
Returned when a null reference is passed to a method that does not accept it as a valid argument.
Caused by one of the following:
E_INVALIDARG is returned when one or more arguments are not valid.
Caused by one of the following:
OperationTimedOut is returned when the operation takes more than the specified time to complete.
Caused by one of the following:
CommunicationError is returned when a communication error caused the operation to fail.
Caused by one of the following:
ServiceTooBusy is returned when the service is too busy to process the operation.
Caused by one of the following:
E_ACCESSDENIED is returned when the access check has failed for this operation.
Remarks
The following example gets the health of a node.
public static bool GetNodeHealth(string clusterConnection)
{
NodeHealth nodeHealth;
// Connect to the cluster.
FabricClient fabricClient = new FabricClient(clusterConnection);
// Get the node health.
try
{
nodeHealth = fabricClient.HealthManager.GetNodeHealthAsync("Node1").Result;
}
catch (Exception e)
{
Console.WriteLine("Error: " + e.Message);
if (e.InnerException != null)
Console.WriteLine(" Inner Exception: " + e.InnerException.Message);
return false;
}
// Display the node health information.
Console.WriteLine("Node Health:");
Console.WriteLine(" Node {0}: {1}", nodeHealth.NodeName, nodeHealth.AggregatedHealthState);
// List the health events.
Console.WriteLine(" Health Events:");
IList<HealthEvent> healthEvents = nodeHealth.HealthEvents;
foreach (HealthEvent healthEvent in healthEvents)
{
Console.WriteLine(" Health Event:");
Console.WriteLine(" Last Modified: " + healthEvent.LastModifiedUtcTimestamp);
Console.WriteLine(" Source UTC Timestamp: " + healthEvent.SourceUtcTimestamp);
Console.WriteLine(" Is Expired: " + healthEvent.IsExpired);
Console.WriteLine(" Health Information:");
Console.WriteLine(" Description: " + healthEvent.HealthInformation.Description);
Console.WriteLine(" Source ID: " + healthEvent.HealthInformation.SourceId);
Console.WriteLine(" Health State: " + healthEvent.HealthInformation.HealthState);
Console.WriteLine(" Property: " + healthEvent.HealthInformation.Property);
Console.WriteLine(" Remove When Expired: " + healthEvent.HealthInformation.RemoveWhenExpired);
Console.WriteLine(" Sequence Number: " + healthEvent.HealthInformation.SequenceNumber);
Console.WriteLine(" Time to Live: " + healthEvent.HealthInformation.TimeToLive);
}
// List the unhealthy evaluations.
Console.WriteLine(" Unhealthy Evaluations:");
IList<HealthEvaluation> healthEvaluationList = nodeHealth.UnhealthyEvaluations;
foreach (HealthEvaluation healthEvaluation in healthEvaluationList)
{
Console.WriteLine(" Kind: " + healthEvaluation.Kind);
Console.WriteLine(" Aggregated Health State: " + healthEvaluation.AggregatedHealthState);
Console.WriteLine(" Description: " + healthEvaluation.Description);
}
Console.WriteLine();
return true;
}
Applies to
GetNodeHealthAsync(String, ClusterHealthPolicy)
Asynchronously gets the health of a Service Fabric node.
public System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth> GetNodeHealthAsync (string nodeName, System.Fabric.Health.ClusterHealthPolicy healthPolicy);member this.GetNodeHealthAsync : string * System.Fabric.Health.ClusterHealthPolicy -> System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth>Public Function GetNodeHealthAsync (nodeName As String, healthPolicy As ClusterHealthPolicy) As Task(Of NodeHealth)Parameters
- nodeName
- String
The Service Fabric node name.
- healthPolicy
- ClusterHealthPolicy
The cluster health policy used to evaluate the node health.
Returns
The health of a Service Fabric node.
Exceptions
The FabricClient object is in a closed state. Dispose of the FabricClient object you are using and instantiate a new FabricClient object.
Returned when a null reference is passed to a method that does not accept it as a valid argument.
Caused by one of the following:
E_INVALIDARG is returned when one or more arguments are not valid.
Caused by one of the following:
OperationTimedOut is returned when the operation takes more than the specified time to complete.
Caused by one of the following:
CommunicationError is returned when a communication error caused the operation to fail.
Caused by one of the following:
ServiceTooBusy is returned when the service is too busy to process the operation.
Caused by one of the following:
E_ACCESSDENIED is returned when the access check has failed for this operation.
Applies to
GetNodeHealthAsync(NodeHealthQueryDescription, TimeSpan, CancellationToken)
Asynchronously gets the health of a Service Fabric node by using the specified timeout and cancellation token.
public System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth> GetNodeHealthAsync (System.Fabric.Description.NodeHealthQueryDescription queryDescription, TimeSpan timeout, System.Threading.CancellationToken cancellationToken);member this.GetNodeHealthAsync : System.Fabric.Description.NodeHealthQueryDescription * TimeSpan * System.Threading.CancellationToken -> System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth>Public Function GetNodeHealthAsync (queryDescription As NodeHealthQueryDescription, timeout As TimeSpan, cancellationToken As CancellationToken) As Task(Of NodeHealth)Parameters
- queryDescription
- NodeHealthQueryDescription
The query description that defines parameters like health policy, filters etc.
- timeout
- TimeSpan
The maximum amount of time Service Fabric will allow this operation to continue before returning a TimeoutException.
- cancellationToken
- CancellationToken
The optional cancellation token that the operation is observing. It can be used to send a notification that the operation should be canceled. Note that cancellation is advisory and that the operation may still be completed even if it is canceled.
Returns
The health of a Service Fabric node.
Exceptions
The FabricClient object is in a closed state. Dispose of the FabricClient object you are using and instantiate a new FabricClient object.
Returned when a null reference is passed to a method that does not accept it as a valid argument.
Caused by one of the following:
E_INVALIDARG is returned when one or more arguments are not valid.
Caused by one of the following:
OperationTimedOut is returned when the operation takes more than the user provided timeout to complete.
Caused by one of the following:
CommunicationError is returned when a communication error caused the operation to fail.
Caused by one of the following:
ServiceTooBusy is returned when the service is too busy to process the operation.
Caused by one of the following:
E_ACCESSDENIED is returned when the access check has failed for this operation.
Applies to
GetNodeHealthAsync(String, TimeSpan, CancellationToken)
Asynchronously gets the health of a Service Fabric node by using the specified timeout and cancellation token.
public System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth> GetNodeHealthAsync (string nodeName, TimeSpan timeout, System.Threading.CancellationToken cancellationToken);member this.GetNodeHealthAsync : string * TimeSpan * System.Threading.CancellationToken -> System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth>Public Function GetNodeHealthAsync (nodeName As String, timeout As TimeSpan, cancellationToken As CancellationToken) As Task(Of NodeHealth)Parameters
- nodeName
- String
The Service Fabric node.
- timeout
- TimeSpan
The maximum amount of time Service Fabric will allow this operation to continue before returning a TimeoutException.
- cancellationToken
- CancellationToken
The optional cancellation token that the operation is observing. It can be used to send a notification that the operation should be canceled. Note that cancellation is advisory and that the operation may still be completed even if it is canceled.
Returns
The health of a Service Fabric node.
Exceptions
The FabricClient object is in a closed state. Dispose of the FabricClient object you are using and instantiate a new FabricClient object.
Returned when a null reference is passed to a method that does not accept it as a valid argument.
Caused by one of the following:
E_INVALIDARG is returned when one or more arguments are not valid.
Caused by one of the following:
OperationTimedOut is returned when the operation takes more than the user provided timeout to complete.
Caused by one of the following:
CommunicationError is returned when a communication error caused the operation to fail.
Caused by one of the following:
ServiceTooBusy is returned when the service is too busy to process the operation.
Caused by one of the following:
E_ACCESSDENIED is returned when the access check has failed for this operation.
Applies to
GetNodeHealthAsync(String, ClusterHealthPolicy, TimeSpan, CancellationToken)
Asynchronously gets the health of a Service Fabric node by using the specified timeout and cancellation token.
public System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth> GetNodeHealthAsync (string nodeName, System.Fabric.Health.ClusterHealthPolicy healthPolicy, TimeSpan timeout, System.Threading.CancellationToken cancellationToken);member this.GetNodeHealthAsync : string * System.Fabric.Health.ClusterHealthPolicy * TimeSpan * System.Threading.CancellationToken -> System.Threading.Tasks.Task<System.Fabric.Health.NodeHealth>Public Function GetNodeHealthAsync (nodeName As String, healthPolicy As ClusterHealthPolicy, timeout As TimeSpan, cancellationToken As CancellationToken) As Task(Of NodeHealth)Parameters
- nodeName
- String
The Service Fabric node.
- healthPolicy
- ClusterHealthPolicy
The cluster health policy used to evaluate the node health.
- timeout
- TimeSpan
The maximum amount of time Service Fabric will allow this operation to continue before returning a TimeoutException.
- cancellationToken
- CancellationToken
The optional cancellation token that the operation is observing. It can be used to send a notification that the operation should be canceled. Note that cancellation is advisory and that the operation may still be completed even if it is canceled.
Returns
The health of a Service Fabric node.
Exceptions
The FabricClient object is in a closed state. Dispose of the FabricClient object you are using and instantiate a new FabricClient object.
Returned when a null reference is passed to a method that does not accept it as a valid argument.
Caused by one of the following:
E_INVALIDARG is returned when one or more arguments are not valid.
Caused by one of the following:
OperationTimedOut is returned when the operation takes more than the user provided timeout to complete.
Caused by one of the following:
CommunicationError is returned when a communication error caused the operation to fail.
Caused by one of the following:
ServiceTooBusy is returned when the service is too busy to process the operation.
Caused by one of the following:
E_ACCESSDENIED is returned when the access check has failed for this operation.
