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}