glean_core/traits/
string.rs

1// This Source Code Form is subject to the terms of the Mozilla Public
2// License, v. 2.0. If a copy of the MPL was not distributed with this
3// file, You can obtain one at https://mozilla.org/MPL/2.0/.
4
5use crate::ErrorType;
6
7/// A description for the [`StringMetric`](crate::metrics::StringMetric) type.
8///
9/// When changing this trait, make sure all the operations are
10/// implemented in the related type in `../metrics/`.
11pub trait String {
12    /// Sets to the specified value.
13    ///
14    /// # Arguments
15    ///
16    /// * `value` - The string to set the metric to.
17    ///
18    /// ## Notes
19    ///
20    /// Truncates the value if it is longer than `MAX_LENGTH_VALUE` bytes and logs an error.
21    fn set<S: Into<std::string::String>>(&self, value: S);
22
23    /// **Exported for test purposes.**
24    ///
25    /// Gets the currently stored value as a string.
26    ///
27    /// This doesn't clear the stored value.
28    ///
29    /// # Arguments
30    ///
31    /// * `ping_name` - represents the optional name of the ping to retrieve the
32    ///   metric for. Defaults to the first value in `send_in_pings`.
33    fn test_get_value<'a, S: Into<Option<&'a str>>>(
34        &self,
35        ping_name: S,
36    ) -> Option<std::string::String>;
37
38    /// **Exported for test purposes.**
39    ///
40    /// Gets the number of recorded errors for the given metric and error type.
41    ///
42    /// # Arguments
43    ///
44    /// * `error` - The type of error
45    ///
46    /// # Returns
47    ///
48    /// The number of errors reported.
49    fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32;
50}