public void Add(string name, CheckStatus status, string description, Dictionary <string, object> data)
{
Guard.ArgumentNotNullOrEmpty(nameof(name), name);
Guard.ArgumentValid(status != CheckStatus.Unknown, nameof(status), "Cannot add 'Unknown' status to composite health check result.");
Guard.ArgumentNotNullOrEmpty(nameof(description), description);
_results.Add(name, HealthCheckResult.FromStatus(status, description, data));
}
public static async ValueTask <IHealthCheckResult> DefaultUrlCheck(HttpResponseMessage response)
{
var status = response.IsSuccessStatusCode ? CheckStatus.Healthy : CheckStatus.Unhealthy;
var data = new Dictionary <string, object>
{
{ "url", response.RequestMessage.RequestUri.ToString() },
{ "status", (int)response.StatusCode },
{ "reason", response.ReasonPhrase },
{ "body", await response.Content?.ReadAsStringAsync() }
};
return(HealthCheckResult.FromStatus(status, $"status code {response.StatusCode} ({(int)response.StatusCode})", data));
}
public static HealthCheckBuilder AddMaxValueCheck <T>(this HealthCheckBuilder builder, string name, T maxValue, Func <T> currentValueFunc, TimeSpan cacheDuration)
where T : IComparable <T>
{
Guard.ArgumentNotNull(nameof(builder), builder);
Guard.ArgumentNotNullOrEmpty(nameof(name), name);
Guard.ArgumentNotNull(nameof(currentValueFunc), currentValueFunc);
builder.AddCheck(name, () =>
{
var currentValue = currentValueFunc();
var status = currentValue.CompareTo(maxValue) <= 0 ? CheckStatus.Healthy : CheckStatus.Unhealthy;
return(HealthCheckResult.FromStatus(
status,
$"max={maxValue}, current={currentValue}",
new Dictionary <string, object> {
{ "max", maxValue }, { "current", currentValue }
}
));
}, cacheDuration);
return(builder);
}
// Numeric checks
public static HealthCheckBuilder AddMinValueCheck <T>(this HealthCheckBuilder builder, string name, T minValue, Func <T> currentValueFunc)
where T : IComparable <T>
{
Guard.ArgumentNotNull(nameof(builder), builder);
Guard.ArgumentNotNullOrWhitespace(nameof(name), name);
Guard.ArgumentNotNull(nameof(currentValueFunc), currentValueFunc);
builder.AddCheck(name, () =>
{
var currentValue = currentValueFunc();
var status = currentValue.CompareTo(minValue) >= 0 ? CheckStatus.Healthy : CheckStatus.Unhealthy;
return(HealthCheckResult.FromStatus(
status,
$"{name}: min={minValue}, current={currentValue}",
new Dictionary <string, object> {
{ "min", minValue }, { "current", currentValue }
}
));
});
return(builder);
}