Fix OpenAI stream wrapper attribute delegation

[devin-ai-integration]

Fix OpenAI Stream Wrapper Attribute Delegation

Fixes #1101

Problem

Users integrating AgentOps with ChainLit and other frameworks were encountering the error:

'OpenAIAsyncStreamWrapper' object has no attribute 'choices'

This occurred when code tried to access attributes like choices on OpenAI streaming responses that were wrapped by AgentOps instrumentation.

Root Cause

The OpenAIAsyncStreamWrapper and OpenaiStreamWrapper classes act as proxies around OpenAI stream objects but didn't implement __getattr__ to delegate attribute access to the underlying stream. When code accessed stream.choices, Python looked for the attribute on the wrapper class, couldn't find it, and raised an AttributeError.

Solution

Added __getattr__ method to both wrapper classes following the established pattern in the codebase (similar to agentops/instrumentation/agentic/agno/instrumentor.py):

def __getattr__(self, name):
    """Delegate attribute access to the original stream."""
    return getattr(self._stream, name)

This ensures any attribute not explicitly defined on the wrapper gets forwarded to the underlying stream object, making the wrapper transparent to users.

Changes

• Added __getattr__ method to OpenAIAsyncStreamWrapper class
• Added __getattr__ method to OpenaiStreamWrapper class (sync version) for consistency
• Both methods delegate attribute access to self._stream

Testing

• Created and ran attribute delegation test to verify the pattern works correctly
• Verified the fix handles choices, model, id, and other stream attributes
• Changes are minimal and focused only on the specific issue

Compatibility

• No breaking changes - this only adds missing functionality
• Maintains all existing wrapper behavior for instrumentation
• Works with ChainLit, AsyncOpenAI, and other integrations that access stream attributes

Link to Devin run: https://app.devin.ai/sessions/37821e78215c47a2965b384be6169155

Requested by: Alex ([email protected])

[devin-ai-integration]

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