swiftide_core/
metrics.rs

1use std::sync::OnceLock;
2
3use metrics::{IntoLabels, Label, counter, describe_counter};
4
5static METRICS_INIT: OnceLock<bool> = OnceLock::new();
6
7/// Lazily describes all the metrics used in this module once
8pub fn lazy_init() {
9    METRICS_INIT.get_or_init(|| {
10        describe_counter!("swiftide.usage.prompt_tokens", "token usage for the prompt");
11        describe_counter!(
12            "swiftide.usage.completion_tokens",
13            "token usage for the completion"
14        );
15        describe_counter!("swiftide.usage.total_tokens", "total token usage");
16        true
17    });
18}
19
20/// Emits usage metrics for a language model
21pub fn emit_usage(
22    model: &str,
23    prompt_tokens: u64,
24    completion_tokens: u64,
25    total_tokens: u64,
26    custom_metadata: Option<impl IntoLabels>,
27) {
28    let model = model.to_string();
29    let mut metadata = vec![];
30
31    if let Some(custom_metadata) = custom_metadata {
32        metadata.extend(custom_metadata.into_labels());
33    }
34    metadata.push(Label::new("model", model));
35
36    lazy_init();
37    counter!("swiftide.usage.prompt_tokens", metadata.iter()).increment(prompt_tokens);
38    counter!("swiftide.usage.completion_tokens", metadata.iter()).increment(completion_tokens);
39    counter!("swiftide.usage.total_tokens", metadata.iter()).increment(total_tokens);
40}
swiftide_core/metrics.rs

swiftide_core/
metrics.rs
