Support for v4 of mongodb driver

[brycepolly]

Mongo dependency is not being monitored when using v4+ of the driver https://www.npmjs.com/package/mongodb/v/4.1.3

[berkcent]

@hectorhdzg is there any plan for MongoDB Driver v4+ support?

[emmansun]

Any good news?

[hectorhdzg]

We are in the process of using OpenTelemetry internally in Application Insights SDK to generate dependencies/requests data, OpenTelemetry currently supports v4 of MongoDB among other libraries, we are planning to release a beta version soon, we don't have plans to add the functionality in this package in the near future.

[emmansun]

well, then we use mongodb driver's APM to publish APM events manually as a temporary solution.

  mongoClient.on('commandStarted', (event) => {
    if (eventMap[event.requestId]) {
      return;
    }
    contextMap[event.requestId] = channel.bindToContext((cb) => cb());
    eventMap[event.requestId] = {
      ...event,
      time: new Date()
    };
  });
  mongoClient.on('commandSucceeded', (event) => {
    const startedData = eventMap[event.requestId];
    if (startedData) {
      delete eventMap[event.requestId];
    }
    if (typeof event === 'object' && typeof contextMap[event.requestId] === 'function') {
      contextMap[event.requestId](() => channel.publish('mongodb', { startedData, event, succeeded: true }));
      delete contextMap[event.requestId];
    }
  });
  mongoClient.on('commandFailed', (event) => {
    const startedData = eventMap[event.requestId];
    if (startedData) {
      delete eventMap[event.requestId];
    }
    if (typeof event === 'object' && typeof contextMap[event.requestId] === 'function') {
      contextMap[event.requestId](() => channel.publish('mongodb', { startedData, event, succeeded: false }));
      delete contextMap[event.requestId];
    }
  });