Bad attribute on redis encoded string

[tpitale]

Describe the bug

When calling SET <string key> <encoded value> the agent reports this as a "Bad attribute". We're using a library that calls :erlang.binary_to_term on the value before putting it into redis.

Environment

• Elixir & Erlang version (elixir -v): Erlang 24.0.6, Elixir 1.12.3
• Agent version (mix deps | grep new_relic_agent): 1.27.8

[tpitale]

Example log message:

[DEBUG] - 2023-05-15 19:57:34 - Bad attribute value: :sql => <<83, 69, 84, 32, 101, 110, 116, 105, 116, 108, 101, 109, 101, 110, 116, 115, 58, 53, 50, 48, 54, 57, 51, 32, 131, 116, 0, 0, 0, 4, 109, 0, 0, 0, 7, 103, 101, 110, 101, 114, 105, 99, 116, 0, 0, 0, 1, 109, 0, 0, 0, 18, 112, 108, 97, 116, 102, 111, 114, 109, 95, 114, 101, 116, 101, 110, 116, 105, 111, 110, 116, 0, 0, 0, 0, 109, 0, 0, 0, 8, 105, 110, 115, 105, 103, 104, 116, 115, 116, 0, 0, 0, 0, 109, 0, 0, 0, 8, 110, 114, 49, 95, 100, 97, 116, 97, 116, 0, 0, 0, 1, 109, 0, 0, 0, 37, 110, 114, 49, 95, 100, 97, 116, 97, 95, 97, 100, 100, 105, 116, 105, 111, 110, 97, 108, 95, 100, 97, 121, 115, 95, 111, 102, 95, 114, 101, 116, 101, 110, 116, 105, 111, 110, 116, 0, 0, 0, 0, 109, 0, 0, 0, 10, 110, 114, 95, 113, 117, 101, 114, 105, 101, 115, 116, 0, 0, 0, 1, 109, 0, 0, 0, 38, 110, 114, 95, 113, 117, 101, 114, 105, 101, 115, 95, 105, 110, 115, 112, 101, 99, 116, 101, 100, 95, 99, 111, 117, 110, 116, 95, 105, 110, 95, 98, 105, 108, 108, 105, 111, 110, 115, 116, 0, 0, 0, 0>>

We can see part of this:

<<83, 69, 84, 32, 101, 110, 116, 105, 116, 108, 101, 109, 101, 110, 116, 115, 58, 53, 50, 48, 54, 57, 51, 32>>

Will return "SET entitlements:520693 ". And then if we take the rest of the data, and call :erlang.binary_to_term that returns a valid elixir map.

[tpitale]

Our solution will probably be to turn log level back to INFO. But just thought this should be shared.

[tomtaylor]

We're also experiencing this when we store binary values in a Redis string.