nice-grpc-opentelemetry/lib/traces.js

OpenTelemetry instrumentation for nice-grpc

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.tracer = void 0;
exports.getSpanName = getSpanName;
exports.emitSpanEvents = emitSpanEvents;
const api_1 = require("@opentelemetry/api");
const semantic_conventions_1 = require("@opentelemetry/semantic-conventions");
const version_1 = require("./version");
exports.tracer = api_1.trace.getTracer('nice-grpc-opentelemetry', version_1.VERSION);
/**
 * @param methodPath Full method path in form `/package.service/method`
 *
 * @see https://opentelemetry.io/docs/reference/specification/trace/semantic_conventions/rpc/#span-name
 */
function getSpanName(methodPath) {
    return methodPath.slice(1);
}
/**
 * Wrap call request or response iterable and emit `message` span event for each
 * item.
 *
 * @param iterable request or response iterable
 * @param span call span
 * @param type `SENT` or `RECEIVED`
 *
 * @see https://opentelemetry.io/docs/reference/specification/trace/semantic_conventions/rpc/#events
 */
async function* emitSpanEvents(iterable, span, type) {
    let nextId = 1;
    for await (const item of iterable) {
        span.addEvent('message', {
            [semantic_conventions_1.SEMATTRS_MESSAGE_TYPE]: type,
            [semantic_conventions_1.SEMATTRS_MESSAGE_ID]: nextId++,
        });
        yield item;
    }
}
//# sourceMappingURL=traces.js.map