[BUG]: TypeError can't concat str to bytes For postgres.query span.

[martinuncountable]

Tracer Version(s)

3.7.0

Python Version(s)

Python 3.12.3

Pip Version(s)

pip 25.1

Bug Report

ddtrace/internal/_encoding.pyx in ddtrace.internal._encoding.truncate_string at line 101

We did not see this error: TypeError can't concat str to bytes until upgrading from 3.6.0 to 3.7.0.

Reproduction Code

I lowered the limits in trace/_limits.py.

We use sqlalchemy that creates a postgres.query span where span.resource = b'....' (the resource is bytes). We now hit this branch: 5aa32d1#diff-23840af0f4cae717d33e76ce1d0f4766fcc2e1f46a52e9716f6632d984ddfb4cR28-R99
Which causes the exception above.

Error Logs

  File "ddtrace/internal/_encoding.pyx", line 1000, in ddtrace.internal._encoding.MsgpackEncoderV05.put
  File "ddtrace/internal/_encoding.pyx", line 1001, in ddtrace.internal._encoding.MsgpackEncoderV05.put
  File "ddtrace/internal/_encoding.pyx", line 1007, in ddtrace.internal._encoding.MsgpackEncoderV05.put
  File "ddtrace/internal/_encoding.pyx", line 1004, in ddtrace.internal._encoding.MsgpackEncoderV05.put
  File "ddtrace/internal/_encoding.pyx", line 518, in ddtrace.internal._encoding.MsgpackEncoderBase.put
  File "ddtrace/internal/_encoding.pyx", line 522, in ddtrace.internal._encoding.MsgpackEncoderBase.put
  File "ddtrace/internal/_encoding.pyx", line 545, in ddtrace.internal._encoding.MsgpackEncoderBase.put
  File "ddtrace/internal/_encoding.pyx", line 526, in ddtrace.internal._encoding.MsgpackEncoderBase.put
  File "ddtrace/internal/_encoding.pyx", line 510, in ddtrace.internal._encoding.MsgpackEncoderBase._pack_trace
RuntimeError: failed to pack span: <Span(id=2038801128094967499,trace_id=138423436045302291278799403029836899937,parent_id=4589801555931958614,name=postgres.query)>. Exception: can't concat str to bytes

Libraries in Use

sqlalchemy==2.0.35
psycopg2==2.9.10

Operating System

No response