No metrics sent when just using middlewares

[klausbayrhammer]

We observed that connect-datadog does not send any metrics when it is added to an express middleware-stack where there is no router to match routes.

For this sample webapp I would expect connect-datadog to send metrics everytime a static resource is requested

const express = require('express');
var app = express();

app.use(require("connect-datadog")({}));
app.use(express.static('.'));

app.listen(3000);

But since there is a check whether the req.route.path is set (lib/index.js) nothing is sent.

[briangonzalez]

Any word on this one?

[briangonzalez]

FYI – we're trying to use this middleware to monitor the response times of an ember-fastboot server.

[klausbayrhammer]

We've worked around this issue by adding a middleware which just calls next

    router.all('*', (req, res, next) => next());

[lalarsson87]

The workaround above didn't work for me.
I'm using it as follows

import connect_datadog from 'connect-datadog';
app.use(connect_datadog({
            method: true,
            response_code: true,
            path: true
        }));

app.all('*', (req, res, next) => next());

I'm running the DataDog agent directly on the host, changed bind_host to 0.0.0.0 and changed non_local_traffic to "yes".

I'm a bit clueless to what I'm doing wrong.

[lalarsson87]

I found out that the node-dogstatsd sets the host to "localhost" which made it not work for me. I'll open a PR with a solution for this.

[raoulus]

Hi guys,
I am also facing this issue in combination with swagger-express-middleware. By using this middleware there's also no req.route available and therefore no metrics are sent because of this condition

if (!req.route || !req.route.path) {
  return;
}

A simple fix would to fallback to req.path, like

const path = (req.route && req.route.path) || req.path
if (!path) {
  return;
}

what are your thoughts?

This project doesn't seem to actively maintained anymore.

@respectTheCode is there a chance to get this done when I submit a PR?

Best

[ljbade]

@raoulus I would love to see this fixed, I ended up having to use the workaround from #10 (comment)

A bit disappointing since this is the package Datadog recommend.

I think the fallback to path is sensible, currently all my route tags are empty.

[ljbade]

It is also worth noting that https://github.com/brightcove/hot-shots seems to be a more updated version of node-dogstatsd

[raoulus]

@ljbade there are a couple of forks, which have this issue fixed. For instance, https://github.com/wiivv/node-connect-datadog

The suggested workaround is a hack. The path is set *, which is not the desired output I need...

[respectTheCode]

We stopped using datadog years ago when they changed their pricing model. If someone wants to maintain the module I would be happy to transfer it.

[jeremy-lq]

@respectTheCode, thanks for not only maintaining this previously, but offering to transfer it so those using it can continue getting support. If the offer still stands, we're @DataDog on GitHub and npm, and will maintain moving forward.

[respectTheCode]

npm isn't letting me transfer it for some reason. Someone will need to contact npm support to initiate the transfer.

[jeremy-lq]

I've opened ticket 27882 with npm support.

[jeremy-lq]

@respectTheCode, npm support has indicated that the request needs to come from you. You can reference the above ticket number for context. Thanks again.

[jeremy-lq]

@respectTheCode, just wanted to touch base on this. npm support has indicated that the request needs to come from you. You can reference the above ticket number for context. Thanks again.