import os import sys import json import argparse import asyncio import time import aiohttp from aiohttp import ClientConnectorError from lbry import __version__ from lbry.blob.blob_file import MAX_BLOB_SIZE from lbry.conf import Config from lbry.extras.daemon.client import daemon_rpc from lbry.extras import system_info async def report_to_slack(output, webhook): payload = { "text": f"lbrynet {__version__} ({system_info.get_platform()['platform']}) time to first byte:\n{output}" } async with aiohttp.request('post', webhook, data=json.dumps(payload)): pass def confidence(times, z, plus_err=True): mean = sum(times) / len(times) standard_dev = (sum(((t - sum(times) / len(times)) ** 2.0 for t in times)) / len(times)) ** 0.5 err = (z * standard_dev) / (len(times) ** 0.5) return f"{round((mean + err) if plus_err else (mean - err), 3)}" def variance(times): mean = sum(times) / len(times) return round(sum(((i - mean) ** 2.0 for i in times)) / (len(times) - 1), 3) async def wait_for_done(conf, claim_name, timeout): blobs_completed, last_completed = 0, time.perf_counter() while True: file = (await daemon_rpc(conf, "file_list", claim_name=claim_name))[0] if file['status'] in ['finished', 'stopped']: return True, file['blobs_completed'], file['blobs_in_stream'] elif blobs_completed < int(file['blobs_completed']): blobs_completed, last_completed = int(file['blobs_completed']), time.perf_counter() elif (time.perf_counter() - last_completed) > timeout: return False, file['blobs_completed'], file['blobs_in_stream'] await asyncio.sleep(1.0) async def main(cmd_args=None): print('Time to first byte started using parameters:') for key, value in vars(cmd_args).items(): print(f"{key}: {value}") conf = Config() url_to_claim = {} try: for page in range(1, cmd_args.download_pages + 1): start = time.perf_counter() kwargs = { 'page': page, 'claim_type': 'stream', 'any_tags': [ 'art', 'automotive', 'blockchain', 'comedy', 'economics', 'education', 'gaming', 'music', 'news', 'science', 'sports', 'technology', ], 'order_by': ['trending_global', 'trending_mixed'], 'no_totals': True } if not cmd_args.allow_fees: kwargs['fee_amount'] = 0 response = await daemon_rpc( conf, 'claim_search', **kwargs ) if 'error' in response or not response.get('items'): print(f'Error getting claim list page {page}:') print(response) return 1 else: url_to_claim.update({ claim['permanent_url']: claim for claim in response['items'] if claim['value_type'] == 'stream' }) print(f'Claim search page {page} took: {time.perf_counter() - start}') except (ClientConnectorError, ConnectionError): print("Could not connect to daemon") return 1 print("**********************************************") print(f"Attempting to download {len(url_to_claim)} claim_search streams") first_byte_times = [] download_speeds = [] download_successes = [] failed_to = {} await asyncio.gather(*( daemon_rpc(conf, 'file_delete', delete_from_download_dir=True, claim_name=claim['name']) for claim in url_to_claim.values() if not cmd_args.keep_files )) for i, (url, claim) in enumerate(url_to_claim.items()): start = time.perf_counter() response = await daemon_rpc(conf, 'get', uri=url, save_file=not cmd_args.head_blob_only) if 'error' in response: print(f"{i + 1}/{len(url_to_claim)} - failed to start {url}: {response['error']}") failed_to[url] = 'start' if cmd_args.exit_on_error: return continue first_byte = time.perf_counter() first_byte_times.append(first_byte - start) print(f"{i + 1}/{len(url_to_claim)} - {first_byte - start} {url}") if not cmd_args.head_blob_only: downloaded, amount_downloaded, blobs_in_stream = await wait_for_done( conf, claim['name'], cmd_args.stall_download_timeout ) if downloaded: download_successes.append(url) else: failed_to[url] = 'finish' mbs = round((blobs_in_stream * (MAX_BLOB_SIZE - 1)) / (time.perf_counter() - start) / 1000000, 2) download_speeds.append(mbs) print(f"downloaded {amount_downloaded}/{blobs_in_stream} blobs for {url} at " f"{mbs}mb/s") if not cmd_args.keep_files: await daemon_rpc(conf, 'file_delete', delete_from_download_dir=True, claim_name=claim['name']) await asyncio.sleep(0.1) print("**********************************************") result = f"Started {len(first_byte_times)} of {len(url_to_claim)} attempted front page streams\n" if first_byte_times: result += f"Worst first byte time: {round(max(first_byte_times), 2)}\n" \ f"Best first byte time: {round(min(first_byte_times), 2)}\n" \ f"*95% confidence time-to-first-byte: {confidence(first_byte_times, 1.984)}s*\n" \ f"99% confidence time-to-first-byte: {confidence(first_byte_times, 2.626)}s\n" \ f"Variance: {variance(first_byte_times)}\n" if download_successes: result += f"Downloaded {len(download_successes)}/{len(url_to_claim)}\n" \ f"Best stream download speed: {round(max(download_speeds), 2)}mb/s\n" \ f"Worst stream download speed: {round(min(download_speeds), 2)}mb/s\n" \ f"95% confidence download speed: {confidence(download_speeds, 1.984, False)}mb/s\n" \ f"99% confidence download speed: {confidence(download_speeds, 2.626, False)}mb/s\n" for reason in ('start', 'finish'): failures = [url for url, why in failed_to.items() if reason == why] if failures: result += f"\nFailed to {reason}:\n" + "\n•".join(failures) print(result) webhook = os.environ.get('TTFB_SLACK_TOKEN', None) if webhook: await report_to_slack(result, webhook) return 0 if __name__ == "__main__": parser = argparse.ArgumentParser() parser.add_argument("--allow_fees", action='store_true') parser.add_argument("--exit_on_error", action='store_true') parser.add_argument("--stall_download_timeout", default=5, type=int) parser.add_argument("--keep_files", action='store_true') parser.add_argument("--head_blob_only", action='store_true') parser.add_argument("--download_pages", type=int, default=10) sys.exit(asyncio.run(main(cmd_args=parser.parse_args())) or 0)