def get_api_version(self, amp):
amp.api_version = None
r = self.get(amp, retry_404=False)
# Handle 404 special as we don't want to log an ERROR on 404
exc.check_exception(r, (404, ))
if r.status_code == 404:
raise exc.NotFound()
return r.json()
def request(self,
method,
amp,
path='/',
timeout_dict=None,
retry_404=True,
**kwargs):
cfg_ha_amp = CONF.haproxy_amphora
if timeout_dict is None:
timeout_dict = {}
req_conn_timeout = timeout_dict.get(
consts.REQ_CONN_TIMEOUT, cfg_ha_amp.rest_request_conn_timeout)
req_read_timeout = timeout_dict.get(
consts.REQ_READ_TIMEOUT, cfg_ha_amp.rest_request_read_timeout)
conn_max_retries = timeout_dict.get(consts.CONN_MAX_RETRIES,
cfg_ha_amp.connection_max_retries)
conn_retry_interval = timeout_dict.get(
consts.CONN_RETRY_INTERVAL, cfg_ha_amp.connection_retry_interval)
LOG.debug("request url %s", path)
_request = getattr(self.session, method.lower())
_url = self._base_url(amp.lb_network_ip, amp.api_version) + path
LOG.debug("request url %s", _url)
reqargs = {
'verify': CONF.haproxy_amphora.server_ca,
'url': _url,
'timeout': (req_conn_timeout, req_read_timeout),
}
reqargs.update(kwargs)
headers = reqargs.setdefault('headers', {})
headers['User-Agent'] = OCTAVIA_API_CLIENT
self.ssl_adapter.uuid = amp.id
exception = None
# Keep retrying
for dummy in six.moves.xrange(conn_max_retries):
try:
with warnings.catch_warnings():
warnings.filterwarnings(
"ignore",
message="A true SSLContext object is not available")
r = _request(**reqargs)
LOG.debug('Connected to amphora. Response: %(resp)s',
{'resp': r})
content_type = r.headers.get('content-type', '')
# Check the 404 to see if it is just that the network in the
# amphora is not yet up, in which case retry.
# Otherwise return the response quickly.
if r.status_code == 404:
if not retry_404:
raise exc.NotFound()
LOG.debug(
'Got a 404 (content-type: %(content_type)s) -- '
'connection data: %(content)s', {
'content_type': content_type,
'content': r.content
})
if content_type.find("application/json") == -1:
LOG.debug("Amphora agent not ready.")
raise requests.ConnectionError
try:
json_data = r.json().get('details', '')
if 'No suitable network interface found' in json_data:
LOG.debug("Amphora network interface not found.")
raise requests.ConnectionError
except simplejson.JSONDecodeError: # if r.json() fails
pass # TODO(rm_work) Should we do something?
return r
except (requests.ConnectionError, requests.Timeout) as e:
exception = e
LOG.warning("Could not connect to instance. Retrying.")
time.sleep(conn_retry_interval)
LOG.error(
"Connection retries (currently set to %(max_retries)s) "
"exhausted. The amphora is unavailable. Reason: "
"%(exception)s", {
'max_retries': conn_max_retries,
'exception': exception
})
raise driver_except.TimeOutException()