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⚡️ Speed up get_client_ip() by 8% in sentry_sdk/integrations/wsgi.py #2

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⚡️ Speed up get_client_ip() by 8% in sentry_sdk/integrations/wsgi.py #2

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@codeflash-ai codeflash-ai bot commented Jun 18, 2024

📄 get_client_ip() in sentry_sdk/integrations/wsgi.py

📈 Performance improved by 8% (0.08x faster)

⏱️ Runtime went down from 125 microseconds to 115 microseconds

Explanation and details

To optimize the given function, the main goal is to minimize the number of lookups and exception handling operations. Here's a more efficient version of the function.

Changes Made.

  1. Reduced Exception Handling: Instead of using try-except, which can be more expensive, the if statements are used to check for the presence of keys in the dictionary.
  2. Direct Access: The direct access using in and square brackets is faster and avoids the performance overhead associated with handling exceptions.

This version should yield the same output but has fewer overheads due to its more efficient way of handling common cases.

Correctness verification

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

🔘 (none found) − ⚙️ Existing Unit Tests

✅ 35 Passed − 🌀 Generated Regression Tests

(click to show generated tests) 
# imports
import pytest  # used for our unit tests
from sentry_sdk.integrations.wsgi import get_client_ip

# unit tests

# Basic Valid Inputs
def test_single_ip_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_multiple_ips_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1, 10.0.0.1"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_ip_in_http_x_real_ip():
    environ = {"HTTP_X_REAL_IP": "192.168.1.1"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_ip_in_remote_addr():
    environ = {"REMOTE_ADDR": "192.168.1.1"}
    assert get_client_ip(environ) == "192.168.1.1"

# Missing Headers
def test_no_http_x_forwarded_for_or_http_x_real_ip_but_remote_addr_present():
    environ = {"REMOTE_ADDR": "192.168.1.1"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_no_http_x_forwarded_for_or_remote_addr_but_http_x_real_ip_present():
    environ = {"HTTP_X_REAL_IP": "192.168.1.1"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_no_http_x_real_ip_or_remote_addr_but_http_x_forwarded_for_present():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_all_headers_missing():
    environ = {}
    assert get_client_ip(environ) is None

# Malformed Headers
def test_empty_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": ""}
    assert get_client_ip(environ) is None

def test_empty_http_x_real_ip():
    environ = {"HTTP_X_REAL_IP": ""}
    assert get_client_ip(environ) == ""

def test_empty_remote_addr():
    environ = {"REMOTE_ADDR": ""}
    assert get_client_ip(environ) == ""

def test_malformed_http_x_forwarded_for_no_commas():
    environ = {"HTTP_X_FORWARDED_FOR": " "}
    assert get_client_ip(environ) == ""

def test_malformed_http_x_forwarded_for_invalid_ips():
    environ = {"HTTP_X_FORWARDED_FOR": "invalid_ip, another_invalid_ip"}
    assert get_client_ip(environ) == "invalid_ip"

# Whitespace Handling
def test_whitespace_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": " 192.168.1.1 "}
    assert get_client_ip(environ) == "192.168.1.1"

def test_whitespace_in_http_x_real_ip():
    environ = {"HTTP_X_REAL_IP": " 192.168.1.1 "}
    assert get_client_ip(environ) == "192.168.1.1"

def test_whitespace_in_remote_addr():
    environ = {"REMOTE_ADDR": " 192.168.1.1 "}
    assert get_client_ip(environ) == "192.168.1.1"

# Edge Cases
def test_single_ip_with_trailing_comma_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1,"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_multiple_ips_with_trailing_comma_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1, 10.0.0.1,"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_multiple_ips_with_spaces_and_commas_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": " 192.168.1.1 , 10.0.0.1 , 172.16.0.1 "}
    assert get_client_ip(environ) == "192.168.1.1"

def test_non_standard_ip_formats_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1:8080, 10.0.0.1:8080"}
    assert get_client_ip(environ) == "192.168.1.1:8080"

# Large Scale Test Cases
def test_large_number_of_ips_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": ",".join([f"192.168.1.{i}" for i in range(1000)])}
    assert get_client_ip(environ) == "192.168.1.0"

def test_large_environment_dictionary_with_relevant_headers():
    environ = {**{f"HEADER_{i}": str(i) for i in range(1000)}, "HTTP_X_FORWARDED_FOR": "192.168.1.1, 10.0.0.1"}
    assert get_client_ip(environ) == "192.168.1.1"

# Complex Scenarios
def test_combination_of_valid_and_invalid_ips_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "invalid_ip, 192.168.1.1, another_invalid_ip"}
    assert get_client_ip(environ) == "invalid_ip"

def test_combination_of_empty_and_valid_ips_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": ", 192.168.1.1, "}
    assert get_client_ip(environ) == ""

def test_combination_of_valid_ips_in_http_x_forwarded_for_and_http_x_real_ip():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1", "HTTP_X_REAL_IP": "10.0.0.1"}
    assert get_client_ip(environ) == "192.168.1.1"

# Rare or Unexpected Edge Cases
def test_ip_with_port_number_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1:8080"}
    assert get_client_ip(environ) == "192.168.1.1:8080"

def test_special_characters_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1$%^&*"}
    assert get_client_ip(environ) == "192.168.1.1$%^&*"

def test_ipv6_address_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "2001:0db8:85a3:0000:0000:8a2e:0370:7334"}
    assert get_client_ip(environ) == "2001:0db8:85a3:0000:0000:8a2e:0370:7334"

def test_mixed_ipv4_and_ipv6_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1, 2001:0db8:85a3:0000:0000:8a2e:0370:7334"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_encoded_ip_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "3232235777"}  # Decimal representation of 192.168.1.1
    assert get_client_ip(environ) == "3232235777"

def test_private_ip_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "10.0.0.1"}
    assert get_client_ip(environ) == "10.0.0.1"

def test_localhost_ip_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "127.0.0.1"}
    assert get_client_ip(environ) == "127.0.0.1"

def test_loopback_ipv6_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "::1"}
    assert get_client_ip(environ) == "::1"

def test_mixed_valid_and_invalid_ips_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1, invalid_ip"}
    assert get_client_ip(environ) == "192.168.1.1"

def test_ip_with_extra_data_in_http_x_forwarded_for():
    environ = {"HTTP_X_FORWARDED_FOR": "192.168.1.1; extra_data"}
    assert get_client_ip(environ) == "192.168.1.1; extra_data"

🔘 (none found) − ⏪ Replay Tests

@codeflash-ai
⚡️ Speed up get_client_ip() by 8%
c7988df 
To optimize the given function, the main goal is to minimize the number of lookups and exception handling operations. Here's a more efficient version of the function.



### Changes Made.
1. **Reduced Exception Handling**: Instead of using `try-except`, which can be more expensive, the `if` statements are used to check for the presence of keys in the dictionary.
2. **Direct Access**: The direct access using `in` and square brackets is faster and avoids the performance overhead associated with handling exceptions.

This version should yield the same output but has fewer overheads due to its more efficient way of handling common cases.
@codeflash-ai codeflash-ai bot added the ⚡️ codeflash Optimization PR opened by Codeflash AI label Jun 18, 2024
@codeflash-ai codeflash-ai bot requested a review from ihitamandal June 18, 2024 00:17
ihitamandal
ihitamandal approved these changes Jun 21, 2024
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The code change and the explanations look good, but it's possible that the improvement could have been due to noise since the timing is so small.

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