performance_test.py

import requests
import time
from concurrent.futures import ThreadPoolExecutor
import csv

NUM_REQUESTS = 5 
CONCURRENT_THREADS = 10 
URL = "http://localhost:5000/"

def send_request():
    data = {
        'search': "A MRI, magnetic resonance imaging, scan is a very useful diagnosis tool.",
        'pipeline_select': '1'
    }

    start_time = time.time()
    try:
        response = requests.post(URL, data=data)
        elapsed = time.time() - start_time
        if response.status_code != 200:
            print(f"Error {response.status_code}: {response.text[:100]}")
        return response.status_code, elapsed
    except Exception as e:
        print("Request failed:", e)
        return 500, 0  # Treat exceptions as failures

def run_stress_test():
    results = []

    with ThreadPoolExecutor(max_workers=CONCURRENT_THREADS) as executor:
        futures = [executor.submit(send_request) for _ in range(NUM_REQUESTS)]
        for future in futures:
            results.append(future.result())

    successes = sum(1 for r in results if r[0] == 200)
    failures = NUM_REQUESTS - successes
    avg_time = sum(r[1] for r in results) / NUM_REQUESTS
    max_time = max(r[1] for r in results)
    min_time = min(r[1] for r in results)

    print(f"\n=== Stress Test Results ===")
    print(f"Total Requests: {NUM_REQUESTS}")
    print(f"Concurrency Level: {CONCURRENT_THREADS}")
    print(f"Successes: {successes}")
    print(f"Failures: {failures}")
    print(f"Avg Time: {avg_time:.3f}s")
    print(f"Min Time: {min_time:.3f}s")
    print(f"Max Time: {max_time:.3f}s")

    return [NUM_REQUESTS, CONCURRENT_THREADS, avg_time, max_time]

if __name__ == "__main__":
    # Open the CSV file for writing the summary results
    with open('stress_test_results.csv', 'w', newline='') as csvfile:
        writer = csv.writer(csvfile)
        writer.writerow(['Total Requests', 'Concurrency Level', 'Avg Time', 'Max Time'])

        for users in [1, 5, 10, 20, 50, 100]:
            CONCURRENT_THREADS = users
            NUM_REQUESTS = users * 5
            result = run_stress_test()

            writer.writerow(result)