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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
use crate::metrics::DistributionData;
use crate::ErrorType;
/// A description for the
/// [`MemoryDistributionMetric`](crate::metrics::MemoryDistributionMetric) type.
///
/// When changing this trait, make sure all the operations are
/// implemented in the related type in `../metrics/`.
pub trait MemoryDistribution {
/// Accumulates the provided sample in the metric.
///
/// # Arguments
///
/// * `sample` - The sample to be recorded by the metric. The sample is assumed to be in the
/// configured memory unit of the metric.
///
/// ## Notes
///
/// Values bigger than 1 Terabyte (2<sup>40</sup> bytes) are truncated
/// and an `ErrorType::InvalidValue` error is recorded.
fn accumulate(&self, sample: u64);
/// **Exported for test purposes.**
///
/// Gets the currently stored value as a DistributionData of the serialized value.
///
/// This doesn't clear the stored value.
///
/// # Arguments
///
/// * `ping_name` - represents the optional name of the ping to retrieve the
/// metric for. Defaults to the first value in `send_in_pings`.
fn test_get_value<'a, S: Into<Option<&'a str>>>(
&self,
ping_name: S,
) -> Option<DistributionData>;
/// **Exported for test purposes.**
///
/// Gets the number of recorded errors for the given error type.
///
/// # Arguments
///
/// * `error` - The type of error
///
/// # Returns
///
/// The number of errors recorded.
fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32;
}