@boxyhq/metrics/dist/instruments/instrument.js

Internal SDK for OTel instrumentation

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.instrument = instrument;
exports.instrumented = instrumented;
const counter_1 = require("./counter");
const timer_1 = require("./timer");
/**
 * Run the given function, recording throughput, latency and errors
 *
 * @param operationParams
 */
function instrument(_a) {
    return __awaiter(this, arguments, void 0, function* ({ meter, name, delegate, instrumentAttributes }) {
        const start = process.hrtime.bigint();
        try {
            return yield delegate();
        }
        catch (err) {
            (0, counter_1.incrementCounter)({
                meter,
                name: 'function.errors',
                counterAttributes: Object.assign({ function: name }, instrumentAttributes),
            });
            throw err;
        }
        finally {
            const end = process.hrtime.bigint();
            const elapsedNanos = end - start;
            (0, timer_1.recordTimer)({
                meter,
                name: 'function.executionTime',
                val: Number(elapsedNanos) /** convert bigint to number */,
                timerAttributes: Object.assign({ function: name }, instrumentAttributes),
            });
        }
    });
}
/**
 * Decorator that instruments a class method
 *
 * @param meter - Name of OTel meter
 */
function instrumented(meter) {
    return function (target, key, descriptor) {
        if (descriptor === undefined) {
            descriptor = Object.getOwnPropertyDescriptor(target, key);
        }
        if (descriptor === undefined) {
            return descriptor;
        }
        const originalMethod = descriptor.value;
        const klass = target.constructor.name;
        // this needs to be a non-arrow function or we'll get the wrong `this`
        function overrideMethod(...args) {
            return instrument({
                meter,
                name: `${klass}.${key}`,
                delegate: () => __awaiter(this, void 0, void 0, function* () {
                    return yield originalMethod.apply(this, args);
                }),
            });
        }
        descriptor.value = overrideMethod;
        return descriptor;
    };
}