getTracer(serviceName) {
		if (this.tracers[serviceName]) return this.tracers[serviceName];

		const sampler = this.getSampler(serviceName);
		const reporter = this.getReporter();

		const tracer = new Jaeger.Tracer(
			serviceName,
			reporter,
			sampler,
			Object.assign({ logger: this.logger }, this.opts.tracerOptions)
		);
		this.tracers[serviceName] = tracer;

		return tracer;
	}
Get a tracer instance by service name

@param {any} serviceName
@returns {Jaeger.Tracer}