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Health Checks · Recognos/Metrics.NET Wiki · GitHub
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Health Checks
ftamminga edited this page Apr 6, 2018
·
4 revisions
From the original Java library:
Metrics also provides you with a consistent, unified way of performing application health checks. A health check is basically a small self-test which your application performs to verify that a specific component or responsibility is performing correctly.
public static void RegisterHealthChecks()
{
HealthChecks.RegisterHealthCheck("DatabaseConnected", () =>
{
CheckDbIsConnected();
return "Database Connection OK";
});
HealthChecks.RegisterHealthCheck("DiskSpace", () =>
{
int freeDiskSpace = GetFreeDiskSpace();
if (freeDiskSpace <= 512)
{
return HealthCheckResult.Unhealthy("Not enough disk space: {0}", freeDiskSpace);
}
else
{
return HealthCheckResult.Healthy("Disk space ok: {0}", freeDiskSpace);
}
});
HealthChecks.RegisterHealthCheck("SampleOperation", () => SampleOperation());
}
Or you can inherit HealthCheck class and write your own logic:
public class DatabaseHealthCheck : HealthCheck
{
private readonly IDatabase database;
public DatabaseHealthCheck(IDatabase database)
: base("DatabaseCheck")
{
this.database = database;
HealthChecks.RegisterHealthCheck(this);
}
protected override HealthCheckResult Check()
{
// exceptions will be caught and
// the result will be unhealthy
this.database.Ping();
return HealthCheckResult.Healthy();
}
}
The status of the registered health checks can be queried by using:
HealthChecks.GetStatus()
For any issues please use the GitHub issues. For any other questions and ideas feel free to ping us: @PaulParau, @HinteaDan, @BogdanGaliceanu.
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