otel-nestjs-instrumentation/dist/otel.interceptor.js

Comprehensive OpenTelemetry instrumentation for NestJS applications - SQS, Kafka, HTTP/2, cron jobs and custom protocols

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
    return function (target, key) { decorator(target, key, paramIndex); }
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.OtelInterceptor = void 0;
const common_1 = require("@nestjs/common");
const rxjs_1 = require("rxjs");
const internal_1 = require("./internal");
const events_1 = __importDefault(require("events"));
const api_1 = __importDefault(require("@opentelemetry/api"));
const start_otel_instrumentation_if_absent_1 = require("./start-otel-instrumentation-if-absent");
let OtelInterceptor = class OtelInterceptor {
    emitter;
    context;
    constructor(emitter, context) {
        this.emitter = emitter;
        this.context = context;
    }
    intercept(context, next) {
        (0, start_otel_instrumentation_if_absent_1.startOtelInstrumentationIfAbsent)(context, this.context, this.emitter, 'rpc');
        const span = api_1.default.trace.getActiveSpan();
        if (!span)
            return next.handle();
        const traceId = span.spanContext().traceId;
        return next.handle().pipe((0, rxjs_1.tap)({
            next: () => this.finishSpan(traceId, span),
            error: (error) => {
                this.recordError(error);
                this.finishSpan(traceId, span);
            },
        }));
    }
    finishSpan(traceId, span) {
        try {
            if (traceId === this.context.customTransactionId)
                span.end();
            if (traceId) {
                this.emitter.emit('spanFinished', traceId);
            }
        }
        catch (error) {
            this.emitter.emit('spanFinishFailed', error);
        }
    }
    recordError(error) {
        try {
            if (error instanceof Error) {
                internal_1.otelInstrumentation.recordException(error);
            }
            else {
                const errorObj = new Error(String(error));
                internal_1.otelInstrumentation.recordException(errorObj);
            }
            const errorObj = error instanceof Error
                ? error
                : { name: 'UnknownError', message: String(error), stack: undefined };
            internal_1.otelInstrumentation.addAttributes({
                'error.name': errorObj.name,
                'error.message': errorObj.message,
                'error.stack': errorObj.stack || 'No stack trace available',
            });
        }
        catch (finishError) {
            this.emitter.emit('spanFinishFailed', finishError);
        }
    }
};
exports.OtelInterceptor = OtelInterceptor;
exports.OtelInterceptor = OtelInterceptor = __decorate([
    (0, common_1.Injectable)(),
    __param(0, (0, common_1.Inject)(internal_1.emitterSymbol)),
    __metadata("design:paramtypes", [events_1.default,
        internal_1.InternalContext])
], OtelInterceptor);
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