How do you use Sentry?

Sentry Saas (sentry.io)

Version

1.5.6

Steps to Reproduce

One day sentry stopped sending transactions to sentry.io. After much digging I found the issue to be here:

We have a custom traces_sampler function that reads in from a simple JSON file and sets the sample rate based on the endpoint. An example of our JSON:

{
  "^$": 0.05,
  "default_sample_rate": 1.0
}

We limit our root path /, because it gets polled by our load balancer once a minute. And the endpoint is blindingly simple and uninteresting, so we don't want to track all events and blow through our quota.

The problem came about when I switch from the json package to parse the json, to the json_encoder package, which generally is more robust json parser. The issue is that the package json will create a type of float when it deserializes the json, json_encoder will create a type of Decimal

Expected Result

• sample_rate with type Decimal should be sufficient for a return type of the traces_sampler function
• sentry documentation should state the exact allowable types for the traces_sampler function

Actual Result

transactions will be skipped if the type returned by traces_sampler function is not of type float.