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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::common_metric_data::CommonMetricDataInternal;
use crate::error_recording::{record_error, test_get_num_recorded_errors, ErrorType};
use crate::metrics::Metric;
use crate::metrics::MetricType;
use crate::storage::StorageManager;
use crate::CommonMetricData;
use crate::Glean;
/// A quantity metric.
///
/// Used to store explicit non-negative integers.
#[derive(Clone, Debug)]
pub struct QuantityMetric {
meta: CommonMetricDataInternal,
}
impl MetricType for QuantityMetric {
fn meta(&self) -> &CommonMetricDataInternal {
&self.meta
}
}
// IMPORTANT:
//
// When changing this implementation, make sure all the operations are
// also declared in the related trait in `../traits/`.
impl QuantityMetric {
/// Creates a new quantity metric.
pub fn new(meta: CommonMetricData) -> Self {
Self { meta: meta.into() }
}
/// Sets the value. Must be non-negative.
///
/// # Arguments
///
/// * `value` - The value. Must be non-negative.
///
/// ## Notes
///
/// Logs an error if the `value` is negative.
pub fn set(&self, value: i64) {
let metric = self.clone();
crate::launch_with_glean(move |glean| metric.set_sync(glean, value))
}
/// Sets the value synchronously. Must be non-negative.
#[doc(hidden)]
pub fn set_sync(&self, glean: &Glean, value: i64) {
if !self.should_record(glean) {
return;
}
if value < 0 {
record_error(
glean,
&self.meta,
ErrorType::InvalidValue,
format!("Set negative value {}", value),
None,
);
return;
}
glean
.storage()
.record(glean, &self.meta, &Metric::Quantity(value))
}
/// Get current value.
#[doc(hidden)]
pub fn get_value<'a, S: Into<Option<&'a str>>>(
&self,
glean: &Glean,
ping_name: S,
) -> Option<i64> {
let queried_ping_name = ping_name
.into()
.unwrap_or_else(|| &self.meta().inner.send_in_pings[0]);
match StorageManager.snapshot_metric_for_test(
glean.storage(),
queried_ping_name,
&self.meta.identifier(glean),
self.meta.inner.lifetime,
) {
Some(Metric::Quantity(i)) => Some(i),
_ => None,
}
}
/// **Test-only API (exported for FFI purposes).**
///
/// Gets the currently stored value as an integer.
///
/// This doesn't clear the stored value.
///
/// # Arguments
///
/// * `ping_name` - the optional name of the ping to retrieve the metric
/// for. Defaults to the first value in `send_in_pings`.
///
/// # Returns
///
/// The stored value or `None` if nothing stored.
pub fn test_get_value(&self, ping_name: Option<String>) -> Option<i64> {
crate::block_on_dispatcher();
crate::core::with_glean(|glean| self.get_value(glean, ping_name.as_deref()))
}
/// **Exported for test purposes.**
///
/// Gets the number of recorded errors for the given metric and error type.
///
/// # Arguments
///
/// * `error` - The type of error
///
/// # Returns
///
/// The number of errors reported.
pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
crate::block_on_dispatcher();
crate::core::with_glean(|glean| {
test_get_num_recorded_errors(glean, self.meta(), error).unwrap_or(0)
})
}
}