def _RetrieveTreeStatus(tree_name, start_time, end_time=None):
"""Returns a time-ascending-sorted TreeStatus list since checking point."""
url = _MONITORED_TREES[tree_name]
params = {
'limit': 1000, # 1000 is large enough to get all recent tree statuses.
'format': 'json',
# Tree status app treats endTime as the beginning of the time range.
'endTime': time_util.ConvertToTimestamp(start_time),
}
if end_time:
# Tree status app treats startTime as the end of the time range.
params['startTime'] = time_util.ConvertToTimestamp(end_time)
http_client = FinditHttpClient()
status_code, content, _response_headers = http_client.Get(url,
params=params)
if status_code == 200:
all_statuses = map(_CreateTreeStatus, json.loads(content))
all_statuses.sort(key=lambda s: s.time)
# With 'endTime' set, the Tree status app always includes a duplicate entry
# for the latest status.
return all_statuses[:-1]
else:
logging.error('Failed to retrieve tree status for %s from %r to %r',
tree_name, start_time, end_time)
return [] # Wait for next execution.
def _TreeIsOpen():
"""Determine whether the chromium tree is currently open."""
url = 'https://chromium-status.appspot.com/allstatus'
params = {
'limit': '1',
'format': 'json',
}
client = FinditHttpClient()
status_code, content, _response_headers = client.Get(url, params)
if status_code == 200:
try:
states = json.loads(str(content))
if states and states[0].get('general_state') == 'open':
return True
except ValueError, ve:
logging.exception('Could not parse chromium tree status: %s', ve)