[−][src]Trait cadence::MetricSink
Trait for various backends that send Statsd metrics somewhere.
The metric string will be in the canonical format to be sent to a Statsd server. The metric string will not include a trailing newline. Examples of each supported metric type are given below.
Counter
some.counter:123|c
Timer
some.timer:456|ms
Gauge
some.gauge:5|g
Meter
some.meter:8|m
Histogram
some.histogram:4|h
Set
some.set:2|s
See the Statsd spec for more information.
Required methods
fn emit(&self, metric: &str) -> Result<usize>
Send the Statsd metric using this sink and return the number of bytes written or an I/O error.
Provided methods
fn flush(&self) -> Result<()>
Flush any currently buffered metrics to the underlying backend, returning an I/O error if they could not be written for some reason.
Note that not all sinks buffer metrics and so the default implementation of this method does nothing.