// ES5 format
const { MikroTrace } = require('mikrotrace');
// ES6 format
import { MikroTrace } from 'mikrotrace';

const tracer = MikroTrace.start({ serviceName: 'My service' });

const tracer = MikroTrace.start({ serviceName: 'My service' });

const span = tracer.start('My span');
const innerSpan = tracer.start('My inner span');
innerSpan.end();
span.end();

const tracer = MikroTrace.start({ serviceName: 'My service' });

tracer.start('My span');
tracer.start('My extra span');
tracer.endAll();

const tracer = MikroTrace.start({ serviceName: 'My service' });

const span = tracer.start('My span');
span.setAttribute('key', 'some value');

const tracer = MikroTrace.start({ serviceName: 'My service' });

const span = tracer.start('My span');
span.setAttributes({ something: 'my thing here', abc: 123 });

const tracer = MikroTrace.start({ serviceName: 'My service' });

const span = tracer.start('My span');
const config = span.getConfiguration();

const tracer = MikroTrace.start({ correlationId: 'abc-123', serviceName: 'My service' });

const tracer = MikroTrace.start({ serviceName: 'My service' });
tracer.setCorrelationId('abc-123');

const tracer = MikroTrace.start({ serviceName: 'My service' });

const span = tracer.start('My span');
tracer.setParentContext('Some other context');
span.end();

const tracer = MikroTrace.enrich({
  serviceName: 'My new service',
  correlationId: 'qwerty-137',
  parentContext: 'some-other-parent'
});

const tracer = MikroTrace.start({ serviceName: 'My service' });
const tracerConfig = tracer.getConfiguration();

// Import
import { MikroTrace } from './src/entities/MikroTrace';

/**
 * Ideally have a configuration object or file that contains all
 * needed span names to make it easier to reference them.
 */
const spanNames = {
  outerSpan: 'I am the outer span',
  innerSpan: 'I am inside of the outer span',
  nestedInnerSpan: 'I am hidden deep inside'
};

/**
 * The tracer instance that you will reuse in your application.
 * The correlation ID is not required but is _highly_ recommended.
 */
const tracer = MikroTrace.start({ serviceName: 'MyService', correlationId: 'your-correlation-id' });
/**
 * You may also set the correlation ID after instantiation:
 * @example tracer.setCorrelationId('your-correlation-id');
 */

/**
 * Each time you call `tracer.start()` a new span is created.
 * All it takes is a unique span name.
 */
const span = tracer.start(spanNames['outerSpan']);

/**
 * Here we are creating an inner span. No magic: The tracer will
 * assume that the first trace is the parent.
 */
const innerSpan = tracer.start(spanNames['innerSpan']);

/**
 * If this is not the case and you need to assign another parent span,
 * they you can do it by adding the parent span in the second argument:
 */
const innermostSpan = tracer.start(spanNames['nestedInnerSpan'], spanNames['innerSpan']);

/**
 * We call `span.end()` to close the span(s) and print the log(s) for each trace.
 */
innermostSpan.end();
innerSpan.end();
span.end();

/*
EXAMPLE OUTPUT BELOW

const outputInnerSpan = {
  name: 'Call the User service and fetch a response',
  timestamp: '2022-06-26T16:11:41.977Z',
  timestampEpoch: '1656252701000',
  durationMs: 0,
  spanName: 'Call the User service and fetch a response',
  spanParentId: '5dec9b5a-acda-4cdf-924f-f8cf6df236c2',
  spanId: 'd3a06fab-8f81-45c9-bcd8-e458e62a3ef9',
  traceId: 'db62951b-d9a5-4fb6-adf0-10c360e6535f',
  attributes: {},
  correlationId: 'your-correlation-id',
  service: 'MyService',
  isEnded: true
};

const outputOuterSpan = {
  name: 'Greet a user',
  timestamp: '2022-06-26T16:11:41.977Z',
  timestampEpoch: '1656252701000',
  durationMs: 1,
  spanName: 'Greet a user',
  spanId: '5dec9b5a-acda-4cdf-924f-f8cf6df236c2',
  traceId: 'db62951b-d9a5-4fb6-adf0-10c360e6535f',
  attributes: {},
  correlationId: 'your-correlation-id',
  service: 'MyService',
  isEnded: true
};
*/