⚡️ Speed up function get_stream_descriptor by 7% in PR #44444 (artem1205/airbyte-cdk-protocol-dataclasses-serpyco-rs)

[codeflash-ai]

⚡️ This pull request contains optimizations for PR #44444

If you approve this dependent PR, these changes will be merged into the original PR branch artem1205/airbyte-cdk-protocol-dataclasses-serpyco-rs.

This PR will be automatically closed if the original PR is merged.

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📄 get_stream_descriptor() in airbyte-cdk/python/airbyte_cdk/utils/message_utils.py

📈 Performance improved by 7% (0.07x faster)

⏱️ Runtime went down from 13.6 microseconds to 12.8 microseconds

Explanation and details

To optimize the given Python program for better performance, you can minimize redundant accesses and checks, and utilize pattern matching efficiently. Here’s an optimized version.

Explanation.

• The message.type and other repeated attribute accesses are cached to local variables to avoid redundant attribute lookups.
• The logic and functionality remain the same to ensure the return value is the same as before.
• Slight restructuring results in cleaner and more efficient code.

This method aims to minimize the overhead of attribute access and logical checks, which can contribute to a faster runtime, especially when this function is called frequently.

Correctness verification

The new optimized code was tested for correctness. The results are listed below.

✅ 5 Passed − ⚙️ Existing Unit Tests

(click to show existing tests)

- utils/test_message_utils.py

✅ 3 Passed − 🌀 Generated Regression Tests

(click to show generated tests)

# imports
from dataclasses import dataclass
from typing import Optional

import pytest  # used for our unit tests
from airbyte_cdk.models import AirbyteMessage, AirbyteStateMessage, Type
from airbyte_cdk.utils.message_utils import get_stream_descriptor
from airbyte_protocol_dataclasses.models import (AirbyteRecordMessage,
                                                 StreamDescriptor)

# unit tests



def test_missing_stream_in_record_message():
    # Test with a RECORD message but missing stream
    message = AirbyteMessage(type=Type.RECORD, record=None)
    with pytest.raises(AttributeError):
        get_stream_descriptor(message)
    # Outputs were verified to be equal to the original implementation

def test_missing_stream_descriptor_in_state_message():
    # Test with a STATE message but missing stream descriptor
    state_message = AirbyteStateMessage(stream=None)
    message = AirbyteMessage(type=Type.STATE, state=state_message)
    with pytest.raises(ValueError):
        get_stream_descriptor(message)
    # Outputs were verified to be equal to the original implementation



def test_invalid_message_type():
    # Test with an unsupported message type
    message = AirbyteMessage(type=Type.LOG)
    with pytest.raises(NotImplementedError):
        get_stream_descriptor(message)
    # Outputs were verified to be equal to the original implementation

def test_completely_empty_message():
    # Test with a completely empty message
    message = AirbyteMessage(type=None)
    with pytest.raises(NotImplementedError):
        get_stream_descriptor(message)
    # Outputs were verified to be equal to the original implementation

🔘 (none found) − ⏪ Replay Tests

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[codeflash-ai]

This PR has been automatically closed because the original PR #44444 by artem1205 was closed.