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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 std::fmt;
use std::sync::Arc;
use crate::common_metric_data::CommonMetricDataInternal;
use crate::error_recording::{record_error, test_get_num_recorded_errors, ErrorType};
use crate::metrics::time_unit::TimeUnit;
use crate::metrics::Metric;
use crate::metrics::MetricType;
use crate::storage::StorageManager;
use crate::util::{get_iso_time_string, local_now_with_offset};
use crate::CommonMetricData;
use crate::Glean;
use chrono::{DateTime, Datelike, FixedOffset, TimeZone, Timelike};
/// A datetime type.
///
/// Used to feed data to the `DatetimeMetric`.
pub type ChronoDatetime = DateTime<FixedOffset>;
/// Representation of a date, time and timezone.
#[derive(Clone, PartialEq, Eq)]
pub struct Datetime {
/// The year, e.g. 2021.
pub year: i32,
/// The month, 1=January.
pub month: u32,
/// The day of the month.
pub day: u32,
/// The hour. 0-23
pub hour: u32,
/// The minute. 0-59.
pub minute: u32,
/// The second. 0-60.
pub second: u32,
/// The nanosecond part of the time.
pub nanosecond: u32,
/// The timezone offset from UTC in seconds.
/// Negative for west, positive for east of UTC.
pub offset_seconds: i32,
}
impl fmt::Debug for Datetime {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"Datetime({:04}-{:02}-{:02}T{:02}:{:02}:{:02}.{:03}{}{:02}{:02})",
self.year,
self.month,
self.day,
self.hour,
self.minute,
self.second,
self.nanosecond,
if self.offset_seconds < 0 { "-" } else { "+" },
self.offset_seconds / 3600, // hour part
(self.offset_seconds % 3600) / 60, // minute part
)
}
}
impl Default for Datetime {
fn default() -> Self {
Datetime {
year: 1970,
month: 1,
day: 1,
hour: 0,
minute: 0,
second: 0,
nanosecond: 0,
offset_seconds: 0,
}
}
}
/// A datetime metric.
///
/// Used to record an absolute date and time, such as the time the user first ran
/// the application.
#[derive(Clone, Debug)]
pub struct DatetimeMetric {
meta: Arc<CommonMetricDataInternal>,
time_unit: TimeUnit,
}
impl MetricType for DatetimeMetric {
fn meta(&self) -> &CommonMetricDataInternal {
&self.meta
}
}
impl From<ChronoDatetime> for Datetime {
fn from(dt: ChronoDatetime) -> Self {
let date = dt.date();
let time = dt.time();
let tz = dt.timezone();
Self {
year: date.year(),
month: date.month(),
day: date.day(),
hour: time.hour(),
minute: time.minute(),
second: time.second(),
nanosecond: time.nanosecond(),
offset_seconds: tz.local_minus_utc(),
}
}
}
// IMPORTANT:
//
// When changing this implementation, make sure all the operations are
// also declared in the related trait in `../traits/`.
impl DatetimeMetric {
/// Creates a new datetime metric.
pub fn new(meta: CommonMetricData, time_unit: TimeUnit) -> Self {
Self {
meta: Arc::new(meta.into()),
time_unit,
}
}
/// Sets the metric to a date/time including the timezone offset.
///
/// # Arguments
///
/// * `dt` - the optinal datetime to set this to. If missing the current date is used.
pub fn set(&self, dt: Option<Datetime>) {
let metric = self.clone();
crate::launch_with_glean(move |glean| {
metric.set_sync(glean, dt);
})
}
/// Sets the metric to a date/time which including the timezone offset synchronously.
///
/// Use [`set`](Self::set) instead.
#[doc(hidden)]
pub fn set_sync(&self, glean: &Glean, value: Option<Datetime>) {
if !self.should_record(glean) {
return;
}
let value = match value {
None => local_now_with_offset(),
Some(dt) => {
let timezone_offset = FixedOffset::east_opt(dt.offset_seconds);
if timezone_offset.is_none() {
let msg = format!(
"Invalid timezone offset {}. Not recording.",
dt.offset_seconds
);
record_error(glean, &self.meta, ErrorType::InvalidValue, msg, None);
return;
};
let datetime_obj = FixedOffset::east(dt.offset_seconds)
.ymd_opt(dt.year, dt.month, dt.day)
.and_hms_nano_opt(dt.hour, dt.minute, dt.second, dt.nanosecond);
if let Some(dt) = datetime_obj.single() {
dt
} else {
record_error(
glean,
&self.meta,
ErrorType::InvalidValue,
"Invalid input data. Not recording.",
None,
);
return;
}
}
};
self.set_sync_chrono(glean, value);
}
pub(crate) fn set_sync_chrono(&self, glean: &Glean, value: ChronoDatetime) {
let value = Metric::Datetime(value, self.time_unit);
glean.storage().record(glean, &self.meta, &value)
}
/// Gets the stored datetime value.
#[doc(hidden)]
pub fn get_value<'a, S: Into<Option<&'a str>>>(
&self,
glean: &Glean,
ping_name: S,
) -> Option<ChronoDatetime> {
let (d, tu) = self.get_value_inner(glean, ping_name.into())?;
// The string version of the test function truncates using string
// parsing. Unfortunately `parse_from_str` errors with `NotEnough` if we
// try to truncate with `get_iso_time_string` and then parse it back
// in a `Datetime`. So we need to truncate manually.
let time = d.time();
match tu {
TimeUnit::Nanosecond => d.date().and_hms_nano_opt(
time.hour(),
time.minute(),
time.second(),
time.nanosecond(),
),
TimeUnit::Microsecond => {
eprintln!(
"microseconds. nanoseconds={}, nanoseconds/1000={}",
time.nanosecond(),
time.nanosecond() / 1000
);
d.date().and_hms_nano_opt(
time.hour(),
time.minute(),
time.second(),
time.nanosecond() / 1000,
)
}
TimeUnit::Millisecond => d.date().and_hms_nano_opt(
time.hour(),
time.minute(),
time.second(),
time.nanosecond() / 1000000,
),
TimeUnit::Second => {
d.date()
.and_hms_nano_opt(time.hour(), time.minute(), time.second(), 0)
}
TimeUnit::Minute => d.date().and_hms_nano_opt(time.hour(), time.minute(), 0, 0),
TimeUnit::Hour => d.date().and_hms_nano_opt(time.hour(), 0, 0, 0),
TimeUnit::Day => d.date().and_hms_nano_opt(0, 0, 0, 0),
}
}
fn get_value_inner(
&self,
glean: &Glean,
ping_name: Option<&str>,
) -> Option<(ChronoDatetime, TimeUnit)> {
let queried_ping_name = ping_name.unwrap_or_else(|| &self.meta().inner.send_in_pings[0]);
match StorageManager.snapshot_metric(
glean.storage(),
queried_ping_name,
&self.meta.identifier(glean),
self.meta.inner.lifetime,
) {
Some(Metric::Datetime(d, tu)) => Some((d, tu)),
_ => None,
}
}
/// **Test-only API (exported for FFI purposes).**
///
/// Gets the stored datetime value.
///
/// The precision of this value is truncated to the `time_unit` precision.
///
/// # 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<Datetime> {
crate::block_on_dispatcher();
crate::core::with_glean(|glean| {
let dt = self.get_value(glean, ping_name.as_deref());
dt.map(Datetime::from)
})
}
/// **Test-only API (exported for FFI purposes).**
///
/// Gets the stored datetime value, formatted as an ISO8601 string.
///
/// The precision of this value is truncated to the `time_unit` precision.
///
/// # 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_as_string(&self, ping_name: Option<String>) -> Option<String> {
crate::block_on_dispatcher();
crate::core::with_glean(|glean| self.get_value_as_string(glean, ping_name))
}
/// **Test-only API**
///
/// Gets the stored datetime value, formatted as an ISO8601 string.
#[doc(hidden)]
pub fn get_value_as_string(&self, glean: &Glean, ping_name: Option<String>) -> Option<String> {
let value = self.get_value_inner(glean, ping_name.as_deref());
value.map(|(dt, tu)| get_iso_time_string(dt, tu))
}
/// **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)
})
}
}