/// <summary>
/// Use this constructor when instantiating from a field.
/// </summary>
public MetricTag(FieldInfo fieldInfo, MetricTagAttribute attribute, Func <string, string> nameReplacer)
{
IsFromDefault = false;
IsOptional = attribute.IsOptional;
FieldInfo = fieldInfo;
if (!FieldInfo.IsInitOnly || (FieldInfo.FieldType != typeof(string) && !FieldInfo.FieldType.IsEnum))
{
throw new InvalidOperationException(
$"The BosunTag attribute can only be applied to readonly string or enum fields. {fieldInfo.DeclaringType.FullName}.{fieldInfo.Name} is invalid.");
}
Attribute = attribute;
if (attribute.Name != null)
{
Name = attribute.Name;
}
else if (nameReplacer != null)
{
Name = nameReplacer(fieldInfo.Name);
}
else
{
Name = fieldInfo.Name;
}
if (!MetricValidation.IsValidTagName(Name))
{
throw new InvalidOperationException($"\"{Name}\" is not a valid Bosun Tag name. Field: {fieldInfo.DeclaringType.FullName}.{fieldInfo.Name}.");
}
}
/// <summary>
/// Use this constructor when instantiating from a field or property.
/// </summary>
public MetricTag(MemberInfo memberInfo, MetricTagAttribute attribute, Func <string, string> nameReplacer)
{
switch (memberInfo)
{
case FieldInfo fieldInfo:
if (!fieldInfo.IsInitOnly || (fieldInfo.FieldType != typeof(string) && !fieldInfo.FieldType.IsEnum))
{
throw new InvalidOperationException(
$"The MetricTag attribute can only be applied to readonly string or enum fields. {memberInfo.DeclaringType.FullName}.{memberInfo.Name} is invalid."
);
}
break;
case PropertyInfo propertyInfo:
if (propertyInfo.SetMethod != null ||
(propertyInfo.PropertyType != typeof(string) && !propertyInfo.PropertyType.IsEnum))
{
throw new InvalidOperationException(
$"The MetricTag attribute can only be applied to readonly string or enum properties. {memberInfo.DeclaringType.FullName}.{memberInfo.Name} is invalid."
);
}
break;
default:
throw new InvalidOperationException(
$"The MetricTag attribute can only be applied to properties or fields. {memberInfo.DeclaringType.FullName}.{memberInfo.Name} is invalid."
);
}
IsFromDefault = false;
IsOptional = attribute.IsOptional;
MemberInfo = memberInfo;
Attribute = attribute;
if (attribute.Name != null)
{
Name = attribute.Name;
}
else if (nameReplacer != null)
{
Name = nameReplacer(memberInfo.Name);
}
else
{
Name = memberInfo.Name;
}
if (!MetricValidation.IsValidTagName(Name))
{
throw new InvalidOperationException($"\"{Name}\" is not a valid tag name. Field: {memberInfo.DeclaringType.FullName}.{memberInfo.Name}.");
}
}