⚡️ Speed up method EmbedJobsClient.cancel by 12%

[codeflash-ai]

📄 12% (0.12x) speedup for EmbedJobsClient.cancel in src/cohere/embed_jobs/client.py

⏱️ Runtime : 2.21 milliseconds → 1.98 milliseconds (best of 19 runs)

📝 Explanation and details

The optimized code achieves an 11% speedup by replacing multiple sequential if statements with a dictionary lookup for error handling.

Key optimizations:

1. Dictionary-based error mapping: The original code used 12 sequential if statements to check status codes (400, 401, 403, etc.), each requiring a comparison operation. The optimized version uses _ERROR_MAP dictionary for O(1) lookup instead of O(n) sequential checks.

2. Reduced JSON parsing: The original code called _response.json() inside each error condition block, potentially parsing JSON multiple times unnecessarily. The optimized version calls it once when an error is found via response_json = _response.json().

3. Eliminated code duplication: The repetitive error construction logic (headers conversion, type casting, construct_type calls) is consolidated into a single _build_error() helper function.

4. Status code caching: The status code is cached in a local variable status_code = _response.status_code to avoid repeated attribute lookups.

Performance characteristics: This optimization is most effective for error scenarios since successful responses (200-299) still follow the fast path. The line profiler shows the error handling path went from multiple sequential checks to a single dictionary lookup + function call, reducing CPU cycles spent on status code matching.

The test results demonstrate consistent ~11% improvement across different scenarios, with the optimization being particularly beneficial when handling various HTTP error status codes that would previously require checking multiple conditions sequentially.

✅ Correctness verification report:

Test	Status
⚙️ Existing Unit Tests	🔘 None Found
🌀 Generated Regression Tests	✅ 1118 Passed
⏪ Replay Tests	🔘 None Found
🔎 Concolic Coverage Tests	🔘 None Found
📊 Tests Coverage	100.0%

🌀 Generated Regression Tests and Runtime

import pytest
from cohere.embed_jobs.client import EmbedJobsClient


class ApiError(Exception):
    def __init__(self, status_code, headers=None, body=None):
        self.status_code = status_code
        self.headers = headers
        self.body = body

class BadRequestError(ApiError): pass
class UnauthorizedError(ApiError): pass
class ForbiddenError(ApiError): pass
class NotFoundError(ApiError): pass
class UnprocessableEntityError(ApiError): pass
class TooManyRequestsError(ApiError): pass
class InvalidTokenError(ApiError): pass
class ClientClosedRequestError(ApiError): pass
class InternalServerError(ApiError): pass
class NotImplementedError(ApiError): pass
class ServiceUnavailableError(ApiError): pass
class GatewayTimeoutError(ApiError): pass

class JSONDecodeError(Exception): pass

class DummyResponse:
    def __init__(self, status_code, headers=None, json_data=None, text=None, raise_json=False):
        self.status_code = status_code
        self.headers = headers or {}
        self._json_data = json_data
        self.text = text or ""
        self._raise_json = raise_json
    def json(self):
        if self._raise_json:
            raise JSONDecodeError("Invalid JSON")
        return self._json_data

class DummyHttpxClient:
    def __init__(self, response_map):
        self.response_map = response_map
        self.last_request = None
    def request(self, path, method, request_options=None):
        # Save last request for inspection
        self.last_request = (path, method, request_options)
        # Return the response based on the path (simulate job id in URL)
        job_id = path.split("/")[2]
        return self.response_map.get(job_id, self.response_map.get("default"))

class DummyClientWrapper:
    def __init__(self, response_map):
        self.httpx_client = DummyHttpxClient(response_map)
from cohere.embed_jobs.client import EmbedJobsClient


# --- Unit tests ---
@pytest.fixture
def basic_response_map():
    # Map job_id to DummyResponse objects
    return {
        "validjob": DummyResponse(200, headers={"x": "y"}, json_data=None),
        "badjob": DummyResponse(400, headers={"err": "bad"}, json_data={"error": "bad request"}),
        "unauthjob": DummyResponse(401, headers={"err": "unauth"}, json_data={"error": "unauthorized"}),
        "forbidjob": DummyResponse(403, headers={"err": "forbid"}, json_data={"error": "forbidden"}),
        "notfoundjob": DummyResponse(404, headers={"err": "notfound"}, json_data={"error": "not found"}),
        "unprocessablejob": DummyResponse(422, headers={"err": "unprocessable"}, json_data={"error": "unprocessable"}),
        "ratelimitjob": DummyResponse(429, headers={"err": "ratelimit"}, json_data={"error": "too many requests"}),
        "invalidtokenjob": DummyResponse(498, headers={"err": "invalidtoken"}, json_data={"error": "invalid token"}),
        "closedjob": DummyResponse(499, headers={"err": "closed"}, json_data={"error": "client closed"}),
        "internaljob": DummyResponse(500, headers={"err": "internal"}, json_data={"error": "internal error"}),
        "notimplementedjob": DummyResponse(501, headers={"err": "notimplemented"}, json_data={"error": "not implemented"}),
        "unavailablejob": DummyResponse(503, headers={"err": "unavailable"}, json_data={"error": "service unavailable"}),
        "timeoutjob": DummyResponse(504, headers={"err": "timeout"}, json_data={"error": "timeout"}),
        "jsonerrorjob": DummyResponse(502, headers={"err": "jsonerror"}, text="not json", raise_json=True),
        "default": DummyResponse(418, headers={"err": "teapot"}, json_data={"error": "I'm a teapot"}),
    }

@pytest.fixture
def client(basic_response_map):
    return EmbedJobsClient(client_wrapper=DummyClientWrapper(basic_response_map))

# --- Basic Test Cases ---












def test_cancel_performance_under_load():
    # Test that cancelling 1000 jobs does not take excessive time (simulate fast)
    import time
    response_map = {f"job{i}": DummyResponse(200) for i in range(1000)}
    client = EmbedJobsClient(client_wrapper=DummyClientWrapper(response_map))
    start = time.time()
    for i in range(1000):
        codeflash_output = client.cancel(f"job{i}") # 1.99ms -> 1.78ms (11.7% faster)
    elapsed = time.time() - start
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.
#------------------------------------------------
import pytest
from cohere.embed_jobs.client import EmbedJobsClient

# --- Minimal stubs for required classes and errors ---

class HttpResponse:
    def __init__(self, response, data):
        self.response = response
        self.data = data

class ApiError(Exception):
    def __init__(self, status_code, headers, body):
        super().__init__(f"API Error {status_code}: {body}")
        self.status_code = status_code
        self.headers = headers
        self.body = body

class BadRequestError(ApiError): pass
class UnauthorizedError(ApiError): pass
class ForbiddenError(ApiError): pass
class NotFoundError(ApiError): pass
class UnprocessableEntityError(ApiError): pass
class TooManyRequestsError(ApiError): pass
class InvalidTokenError(ApiError): pass
class ClientClosedRequestError(ApiError): pass
class InternalServerError(ApiError): pass
class NotImplementedError(ApiError): pass
class ServiceUnavailableError(ApiError): pass
class GatewayTimeoutError(ApiError): pass

class JSONDecodeError(Exception): pass

# --- Minimal stub for RequestOptions ---
class RequestOptions(dict):
    pass

# --- Mock httpx response ---
class MockResponse:
    def __init__(self, status_code, headers=None, json_data=None, text=None, raise_json_decode=False):
        self.status_code = status_code
        self.headers = headers or {}
        self._json_data = json_data
        self.text = text or ""
        self._raise_json_decode = raise_json_decode

    def json(self):
        if self._raise_json_decode:
            raise JSONDecodeError("Mocked JSON decode error")
        return self._json_data

# --- Mock client wrapper ---
class MockHttpxClient:
    def __init__(self, response_map):
        # response_map: dict of id -> MockResponse
        self.response_map = response_map
        self.called = []

    def request(self, path, method, request_options=None):
        # Extract the id from the path for testing
        # Path format: v1/embed-jobs/{id}/cancel
        id = path.split('/')[2]
        self.called.append((path, method, request_options))
        return self.response_map[id]

class SyncClientWrapper:
    def __init__(self, httpx_client):
        self.httpx_client = httpx_client

# --- Pytest test suite for RawEmbedJobsClient.cancel ---

@pytest.fixture
def make_client():
    # Helper to create a RawEmbedJobsClient with a response map
    def _make(response_map):
        wrapper = SyncClientWrapper(MockHttpxClient(response_map))
        return RawEmbedJobsClient(client_wrapper=wrapper)
    return _make

# ------------------- BASIC TEST CASES -------------------

To edit these changes git checkout codeflash/optimize-EmbedJobsClient.cancel-mh10xxfe and push.