Struct telemetry::keyed::KeyedEnum
[−]
[src]
pub struct KeyedEnum<K, T> where K: ToString, T: Flatten {
// some fields omitted
}
Enumerated histograms.
Enumerated histogram generalize Count histograms to families of keys known at compile-time. They are useful, for instance, to know how often users have picked a specific choice from several, or how many times each kind of error has been triggered, etc.
With SerializationFormat::SimpleJson
, these histograms are
serialized as an object, one field per key (sorted), with value an
array of numbers, in the order of enum values.
Methods
impl<K, T> KeyedEnum<K, T> where K: ToString, T: Flatten
fn new(service: &Service, name: String) -> KeyedEnum<K, T>
Create a new Enum histogram with a given name.
Argument name
is used as key when processing and exporting
the data. Each name
must be unique to the Service
.
Panics
If name
is already used by another histogram in service
.