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import { EmittableMetric, IMetric, IMetricTag, IResultMetric, Unit } from './index.js';
class _Tagged {
protected constructor(public readonly _tag = IMetricTag) {}
}
export class Metric extends _Tagged implements IMetric {
private static DELIM = '.';
protected constructor(
public readonly name: string,
public readonly parent: undefined | IMetric = undefined,
public readonly count = new EmittableMetric(Metric.join(name, 'count'), Unit.COUNT),
public readonly time = new EmittableMetric(Metric.join(name, 'time'), Unit.MILLISECONDS),
) {
super();
}
public child(_name: string): Metric {
const childName = Metric.join(this.name, _name);
return new Metric(childName, this);
}
public asResult() {
return ResultMetric.from(this);
}
static join(...name: Array<string>) {
return name.join(Metric.DELIM);
}
static fromName(name: string): Metric {
return new Metric(name);
}
}
export class ResultMetric extends Metric implements IResultMetric {
protected constructor(
public readonly name: string,
public readonly parent: undefined | IMetric = undefined,
public readonly failure: IMetric,
public readonly success: IMetric,
public readonly warn: IMetric,
) {
super(name, parent);
}
static from(metric: Metric) {
const failure = metric.child('failure');
const success = metric.child('success');
const warn = metric.child('warn');
return new ResultMetric(metric.name, metric.parent, failure, success, warn);
}
}
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