# Ultralytics YOLO 🚀, GPL-3.0 license
import os
import shutil
import threading
import time
import requests
from ultralytics.yolo.utils import DEFAULT_CONFIG_DICT, LOGGER, RANK, SETTINGS, TryExcept, colorstr, emojis
PREFIX = colorstr('Ultralytics: ')
HELP_MSG = 'If this issue persists please visit https://github.com/ultralytics/hub/issues for assistance.'
HUB_API_ROOT = os.environ.get("ULTRALYTICS_HUB_API", "https://api.ultralytics.com")
def check_dataset_disk_space(url='https://github.com/ultralytics/yolov5/releases/download/v1.0/coco128.zip', sf=2.0):
# Check that url fits on disk with safety factor sf, i.e. require 2GB free if url size is 1GB with sf=2.0
gib = 1 << 30 # bytes per GiB
data = int(requests.head(url).headers['Content-Length']) / gib # dataset size (GB)
total, used, free = (x / gib for x in shutil.disk_usage("/")) # bytes
LOGGER.info(f'{PREFIX}{data:.3f} GB dataset, {free:.1f}/{total:.1f} GB free disk space')
if data * sf < free:
return True # sufficient space
LOGGER.warning(f'{PREFIX}WARNING: Insufficient free disk space {free:.1f} GB < {data * sf:.3f} GB required, '
f'training cancelled ❌. Please free {data * sf - free:.1f} GB additional disk space and try again.')
return False # insufficient space
def request_with_credentials(url: str) -> any:
""" Make an ajax request with cookies attached """
from google.colab import output # noqa
from IPython import display # noqa
display.display(
display.Javascript("""
window._hub_tmp = new Promise((resolve, reject) => {
const timeout = setTimeout(() => reject("Failed authenticating existing browser session"), 5000)
fetch("%s", {
method: 'POST',
credentials: 'include'
})
.then((response) => resolve(response.json()))
.then((json) => {
clearTimeout(timeout);
}).catch((err) => {
clearTimeout(timeout);
reject(err);
});
});
""" % url))
return output.eval_js("_hub_tmp")
# Deprecated TODO: eliminate this function?
def split_key(key=''):
"""
Verify and split a 'api_key[sep]model_id' string, sep is one of '.' or '_'
Args:
key (str): The model key to split. If not provided, the user will be prompted to enter it.
Returns:
Tuple[str, str]: A tuple containing the API key and model ID.
"""
import getpass
error_string = emojis(f'{PREFIX}Invalid API key ⚠️\n') # error string
if not key:
key = getpass.getpass('Enter model key: ')
sep = '_' if '_' in key else '.' if '.' in key else None # separator
assert sep, error_string
api_key, model_id = key.split(sep)
assert len(api_key) and len(model_id), error_string
return api_key, model_id
def smart_request(*args, retry=3, timeout=30, thread=True, code=-1, method="post", verbose=True, **kwargs):
"""
Makes an HTTP request using the 'requests' library, with exponential backoff retries up to a specified timeout.
Args:
*args: Positional arguments to be passed to the requests function specified in method.
retry (int, optional): Number of retries to attempt before giving up. Default is 3.
timeout (int, optional): Timeout in seconds after which the function will give up retrying. Default is 30.
thread (bool, optional): Whether to execute the request in a separate daemon thread. Default is True.
code (int, optional): An identifier for the request, used for logging purposes. Default is -1.
method (str, optional): The HTTP method to use for the request. Choices are 'post' and 'get'. Default is 'post'.
verbose (bool, optional): A flag to determine whether to print out to console or not. Default is True.
**kwargs: Keyword arguments to be passed to the requests function specified in method.
Returns:
requests.Response: The HTTP response object. If the request is executed in a separate thread, returns None.
"""
retry_codes = (408, 500) # retry only these codes
def func(*func_args, **func_kwargs):
r = None # response
t0 = time.time() # initial time for timer
for i in range(retry + 1):
if (time.time() - t0) > timeout:
break
if method == 'post':
r = requests.post(*func_args, **func_kwargs) # i.e. post(url, data, json, files)
elif method == 'get':
r = requests.get(*func_args, **func_kwargs) # i.e. get(url, data, json, files)
if r.status_code == 200:
break
try:
m = r.json().get('message', 'No JSON message.')
except AttributeError:
m = 'Unable to read JSON.'
if i == 0:
if r.status_code in retry_codes:
m += f' Retrying {retry}x for {timeout}s.' if retry else ''
elif r.status_code == 429: # rate limit
h = r.headers # response headers
m = f"Rate limit reached ({h['X-RateLimit-Remaining']}/{h['X-RateLimit-Limit']}). " \
f"Please retry after {h['Retry-After']}s."
if verbose:
LOGGER.warning(f"{PREFIX}{m} {HELP_MSG} ({r.status_code} #{code})")
if r.status_code not in retry_codes:
return r
time.sleep(2 ** i) # exponential standoff
return r
if thread:
threading.Thread(target=func, args=args, kwargs=kwargs, daemon=True).start()
else:
return func(*args, **kwargs)
@TryExcept()
def sync_analytics(cfg, all_keys=False, enabled=False):
"""
Sync analytics data if enabled in the global settings
Args:
cfg (DictConfig): Configuration for the task and mode.
all_keys (bool): Sync all items, not just non-default values.
enabled (bool): For debugging.
"""
if SETTINGS['sync'] and RANK in {-1, 0} and enabled:
cfg = dict(cfg) # convert type from DictConfig to dict
if not all_keys:
cfg = {k: v for k, v in cfg.items() if v != DEFAULT_CONFIG_DICT.get(k, None)} # retain non-default values
cfg['uuid'] = SETTINGS['uuid'] # add the device UUID to the configuration data
# Send a request to the HUB API to sync analytics
smart_request(f'{HUB_API_ROOT}/v1/usage/anonymous', json=cfg, headers=None, code=3, retry=0, verbose=False)