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import sys
import os
import time
import datetime
from concurrent import futures
import pytz
from dateutil import parser
import requests
import progressbar
PAPERTRAIL_API_TOKEN = os.environ.get('PAPERTRAIL_API_TOKEN', None)
ARCHIVES_URL = 'https://papertrailapp.com/api/v1/archives.json'
DEFAULT_REMAIN_SIZE = 25
HEADERS = {'X-Papertrail-Token': PAPERTRAIL_API_TOKEN}
MIN_INTERVAL_SEC = 0.1
def get_ppheader(response):
hist = [response] + response.history
for h in hist:
if 'X-Rate-Limit-Remaining' not in h.headers:
continue
return (
int(h.headers['X-Rate-Limit-Limit']),
int(h.headers['X-Rate-Limit-Remaining']),
int(h.headers['X-Rate-Limit-Reset'])
)
def do_download(url, filename, index):
while True:
try:
with requests.Session() as s:
res = s.get(url, headers=HEADERS)
finishtime = time.time_ns()
(limit, rem, reset) = get_ppheader(res)
if 200 <= res.status_code < 300:
with open(filename, "wb") as f:
for chunk in res.iter_content(chunk_size=128):
f.write(chunk)
return (limit, rem, reset, finishtime, index)
except requests.ConnectionError:
time.sleep(1)
def parse_span():
if len(sys.argv) == 1:
return None, None
f = t = None
fromstr = tostr = ''
span = sys.argv[1].split('~')
if len(span) == 1:
fromstr = tostr = span[0]
else:
[fromstr, tostr, *_] = span
if fromstr:
f = parser.isoparse(fromstr)
if not f.tzname():
utc = pytz.timezone('UTC')
f = utc.localize(f)
if tostr:
t = parser.isoparse(tostr)
if not t.tzname():
utc = pytz.timezone('UTC')
t = utc.localize(t)
if tostr and fromstr == tostr:
t = t + datetime.timedelta(days=1)
return f, t
def main():
if not PAPERTRAIL_API_TOKEN:
print('Not set the environment variable `PAPERTRAIL_API_TOKEN`',
file=sys.stderr)
sys.exit(1)
_from, to = parse_span()
print("fetching log archives information ...", end="\r", file=sys.stderr)
r = requests.get(ARCHIVES_URL, headers=HEADERS)
r.raise_for_status()
archives = [ar for ar in r.json()
if (not _from or _from <= parser.isoparse(ar["start"]))
and (not to or parser.isoparse(ar["end"]) < to)
]
with futures.ThreadPoolExecutor(max_workers=10) as executor:
future_list = []
remain = DEFAULT_REMAIN_SIZE
until_reset_sec = 0
lasttime = time.time_ns()
with progressbar.ProgressBar(max_value=len(archives)) as bar:
for i, ar in enumerate(archives):
future_list.append(
executor.submit(
do_download,
ar['_links']['download']['href'],
ar['filename'],
i
)
)
if len(future_list) < remain:
time.sleep(MIN_INTERVAL_SEC)
continue
for future in future_list:
(_, rem, reset, finishtime, index) = future.result()
if finishtime > lasttime:
remain = rem
until_reset_sec = reset
lasttime = finishtime
bar.update(index)
future_list = []
if remain <= 0:
time.sleep(until_reset_sec)
remain = DEFAULT_REMAIN_SIZE
continue
time.sleep(MIN_INTERVAL_SEC)
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