MySQL tracing does not support connection pools

[zchristopoulos]

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Package + Version

• @sentry/browser
• @sentry/node
• raven-js
• raven-node (raven for node)
• other:

Version:

6.2.3

Description

I have noticed that when a mysql query is ran via a connection pool, the tracing integration does not attach to the query. I looked through the source code of mysqljs and found that Pool.prototype.query directly calls Connection.createQuery and sends a fully structured Query object into Connection.prototype.query via the sql parameter. Because of this, the query is ignored by the tracing integration as the callback is not passed inside the standard values or callback parameters.