private static void ConvertToValueMetric(QueryContext queryContext, string metricName, PropertyInfo propertyInfo, object result)
{
// If the query result is a bigint, an exception is thrown when attempting to make it an decimal.
var potentiallyLargeValue = Convert.ToInt64(propertyInfo.GetValue(result, null));
if (potentiallyLargeValue >= decimal.MaxValue)
{
// Best we can do when the value is > decimal.MaxValue
queryContext.AddMetric(metricName, decimal.MaxValue);
}
else
{
var value = Convert.ToDecimal(potentiallyLargeValue);
queryContext.AddMetric(metricName, value);
}
}
private static void AddValueMetric(QueryContext queryContext, string metricName, PropertyInfo propertyInfo, object result)
{
queryContext.AddMetric(metricName, (decimal) propertyInfo.GetValue(result, null));
}
public void AddMetric(QueryContext queryContext, object result)
{
var metricName = queryContext.FormatMetricKey(result, MetricName, MetricUnits);
_metricSetter(queryContext, metricName, _propertyInfo, result);
}
public void AddMetrics(QueryContext context)
{
context.Results.ForEach(r => _metricMappers.ForEach(m => m.AddMetric(context, r)));
}
private static ComponentData CreateComponentDataForFake(object fake, string propertyName)
{
var componentData = new ComponentData();
var query = new SqlQuery(fake.GetType(), new SqlServerQueryAttribute(null, "Fake"), null, "");
var queryContext = new QueryContext(query) {ComponentData = componentData,};
var metricMapper = new MetricMapper(fake.GetType().GetProperty(propertyName));
metricMapper.AddMetric(queryContext, fake);
return componentData;
}
public void Assert_try_create_mapper_handles_decimal_correctly()
{
var fake = new FakeQueryType {Decimal = 12.3m};
var componentData = new ComponentData();
var query = new SqlQuery(fake.GetType(), new SqlServerQueryAttribute(null, "Fake"), null, "");
var queryContext = new QueryContext(query) {ComponentData = componentData,};
var mapper = MetricMapper.TryCreate(fake.GetType().GetProperty("Decimal"));
Assert.That(mapper, Is.Not.Null, "Mapping Decimal failed");
mapper.AddMetric(queryContext, fake);
const string metricKey = "Fake/Decimal";
Assert.That(componentData.Metrics.ContainsKey(metricKey), "Expected metric with correct name to be added");
var condition = componentData.Metrics[metricKey];
Assert.That(condition, Is.EqualTo(fake.Decimal), "Metric not mapped correctly");
}