/// <summary>
/// Adds a health report to the Windows Fabric health system.
/// </summary>
/// <param name="roleInstance">The role instance.</param>
/// <param name="healthState">State of the health.</param>
private void AddReport(RoleInstance roleInstance, HealthState healthState)
{
string nodeName = roleInstance.Id.TranslateRoleInstanceToNodeName();
// this one is purely for informational purposes
AddReport(nodeName, HealthConstants.HealthReportRoleInstanceLastUpdateTimePropertyName, roleInstance.LastUpdateTime.ToString("o"), HealthState.Ok);
AddReport(nodeName, HealthConstants.HealthReportRoleInstanceStatusPropertyName, roleInstance.Status.ToString(), healthState);
}
public HealthState Execute(RoleInstance roleInstance, HealthState input)
{
foreach (var healthPolicy in healthPolicies)
{
input = healthPolicy.Apply(roleInstance, input);
}
return(input);
}
public override HealthState Apply(
RoleInstance roleInstance,
HealthState input)
{
HealthState maxAllowedHealthState;
string value = GetConfigValue(maxAllowedKeyName);
bool success = Enum.TryParse(value, out maxAllowedHealthState);
if (success)
{
// E.g. if input is Error and maxAllowedHealthState is Warning, then clamp (or restrict the return value to Warning)
if (input > maxAllowedHealthState)
{
Trace.WriteInfo(
HealthConstants.TraceType,
"Reducing input health state from '{0}' to '{1}' due to setting provided in config key '{2}' of watchdog health config policy '{3}'",
input,
maxAllowedHealthState,
maxAllowedKeyName,
Name);
input = maxAllowedHealthState;
}
}
else
{
if (input < HealthState.Warning)
{
input = HealthState.Warning;
Trace.WriteWarning(
HealthConstants.TraceType,
"Updating health state to '{0}' due to error while getting value '{1}' for config key '{2}' provided to watchdog health config policy '{3}'",
input,
value,
maxAllowedKeyName,
Name);
}
else
{
Trace.WriteWarning(
HealthConstants.TraceType,
"Error while getting value '{0}' for config key '{1}' provided to watchdog health config policy '{2}'",
value,
maxAllowedKeyName,
Name);
}
}
return(input);
}
/// <summary>
/// Adds a health report to the Windows Fabric health system.
/// </summary>
/// <param name="roleInstance">The role instance.</param>
/// <param name="healthState">State of the health.</param>
private void AddReport(RoleInstance roleInstance, HealthState healthState, bool enableTracing, bool enableReportHealth)
{
string nodeName = roleInstance.Id.TranslateRoleInstanceToNodeName();
if (enableReportHealth)
{
// this one is purely for informational purposes
AddReport(nodeName, RoleInstanceHealthConstants.HealthReportRoleInstanceLastUpdateTimePropertyName, roleInstance.LastUpdateTime.ToString("o"), HealthState.Ok);
AddReport(nodeName, RoleInstanceHealthConstants.HealthReportRoleInstanceStatusPropertyName, roleInstance.Status.ToString(), healthState);
}
if (enableTracing && (roleInstance.Status != RoleInstanceState.ReadyRole))
{
Trace.WriteInfo(
RoleInstanceHealthConstants.TraceType,
"Role instance {0}: {1} (last updated at {2:O})",
roleInstance.Id,
roleInstance.Status,
roleInstance.LastUpdateTime);
}
}
public abstract HealthState Apply(
RoleInstance roleInstance,
HealthState input);
public override HealthState Apply(RoleInstance roleInstance, HealthState input)
{
string key = GetFullKeyName(roleInstance.Status);
if (!DoesConfigKeyExist(key))
{
if (input < HealthState.Warning)
{
input = HealthState.Warning;
Trace.WriteWarning(
HealthConstants.TraceType,
"Updating health state to '{0}' due to unknown config key '{1}' provided to watchdog health config policy '{2}'",
input,
key,
Name);
}
else
{
Trace.WriteWarning(
HealthConstants.TraceType,
"Unknown config key '{0}' provided in watchdog health config policy '{1}'",
key,
Name);
}
return(input);
}
HealthState output;
string value = GetConfigValue(key);
bool success = Enum.TryParse(value, true, out output);
if (success)
{
return(output);
}
// we come here because of an Enum.TryParse error.
if (input < HealthState.Warning)
{
input = HealthState.Warning;
Trace.WriteWarning(
HealthConstants.TraceType,
"Updating health state to '{0}' due to error while getting value '{1}' for config key '{2}' provided to watchdog health config policy '{3}'",
input,
value,
key,
Name);
}
else
{
Trace.WriteWarning(
HealthConstants.TraceType,
"Error while getting value '{0}' for config key '{1}' provided to watchdog health config policy '{2}'",
value,
key,
Name);
}
return(input);
}
