[sdk-metrics] remove attributeKeys View option and allow custom filters instead

[pichlermarc]

Currently our attributeKeys view option was implementing an allow-list type of behavior, which was defined by the specification. Once open-telemetry/opentelemetry-specification#3680 merges, the specification explicitly states that custom filters are also allowed.

For SDK 2.0 we should consider replacing attributeKeys with attributeFilter, and functionality that allows for both allow-list and deny-list. A deny-list could be especially helpful for "misbehaving" instrumentations that cause metrics cardinality explosions. A problematic attribute can this way be easily turned off without having to know all the other attributes.

Additional Context

• Clarify the minimal implementation of a View's attribute_keys is an allow-list opentelemetry-specification#3680
• TC Feedback Request: View attribute filter definition in Go opentelemetry-specification#3664

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 14 days.

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 14 days.