run.md

❯ cargo run --example sample
    Finished dev [unoptimized + debuginfo] target(s) in 0.04s
     Running `/Users/jrediger/mozilla/src/glean.rs/target/debug/examples/sample`
{
  "bool": {
    "flags.a11yEnabled": true
  },
  "string": {
    "app.clientId": "c0ffee",
    "global_metric": "I can set this",
    "local_metric": "and set this too"
  }
}

sample.rs

use lazy_static::lazy_static;
use glean_core::metrics::{self, StringMetric, CommonMetricData};

lazy_static! {
    pub static ref GLOBAL_METRIC : StringMetric = StringMetric::new(CommonMetricData { name: "global_metric".into() });
}

fn main() {
    let local_metric : StringMetric = StringMetric::new(CommonMetricData { name: "local_metric".into() });

    metrics::flags::a11yEnabled.set(true);
    metrics::app::clientId.set("c0ffee");
    GLOBAL_METRIC.set("I can set this");
    local_metric.set("and set this too");

    println!("{}", metrics::StorageManager.dump());
}

storage.rs

use std::collections::HashMap;

pub struct CommonMetricData {
  name: String,
}

pub struct StringStorageImpl {
    store: HashMap<String, String>,
}

impl StringStorageImpl {
    fn new() -> Self {
        Self {
            store: HashMap::new()
        }
    }

    fn record(&mut self, data: &CommonMetricData, value: String) {
        let name = data.name.clone();
        self.store.insert(name, value);
    }

    fn dump(&self) -> JsonValue {
        json!(self.store)
    }
}