[receiver] mysql - Replication Metrics don't report before version 8.0.22

[StefanKurek]

Component(s)

receiver/mysql

What happened?

Description

The MySQL Receiver will only report replication metrics if connected to MySQL version 8.0.22 or greater. This is due to the change from SHOW SLAVE STATUS to SHOW REPLICA STATUS. When these replication metrics were added, they were only added for the latter case. And when bugs were noticed, the fix was to just have the client do nothing when the MySQL version is < 8.0.22. Instead the alternate query could be used and additional entries could be added to the switch case statement based on this table (I can't actually find 8.0 documentation anymore...not sure if it exists).

Steps to Reproduce

Connect MySQL Receiver to a MySQL Server version 8.0 (any version less than 8.0.22) setup with replication and collect metrics.

Expected Result

See replication metrics coming back.

Actual Result

No metrics come back (although other metrics come back just fine).

Collector version

v0.109.0

Environment information

Environment

OS: (e.g., "Ubuntu 20.04")
Compiler(if manually compiled): (e.g., "go 14.2")

OpenTelemetry Collector configuration

receivers:
  mysql:
    endpoint: localhost:3306
    username: user
    password: pass
    database: otel
    collection_interval: 1m

Log output

No response

Additional context

No response

[github-actions]

Pinging code owners:

• receiver/mysql: @djaglowski

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