bazarr/libs/plex/core/http.py

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Python
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2018-10-31 16:08:29 +00:00
from plex.core.context import ContextStack
from plex.core.helpers import synchronized
from plex.request import PlexRequest
from threading import Condition
import hashlib
import logging
import requests
import socket
log = logging.getLogger(__name__)
class HttpClient(object):
def __init__(self, client):
self.client = client
self.configuration = ContextStack()
self.session = None
# Private
self._lock = Condition()
# Build requests session
self._build()
@property
def cache(self):
return self.client.configuration.get('cache.http')
def configure(self, path=None):
self.configuration.push(base_path=path)
return self
def request(self, method, path=None, params=None, query=None, data=None, credentials=None, **kwargs):
# retrieve configuration
ctx = self.configuration.pop()
if path is not None and type(path) is not str:
# Convert `path` to string (excluding NoneType)
path = str(path)
if ctx.base_path and path:
# Prepend `base_path` to relative `path`s
if not path.startswith('/'):
path = ctx.base_path + '/' + path
elif ctx.base_path:
path = ctx.base_path
elif not path:
path = ''
request = PlexRequest(
self.client,
method=method,
path=path,
params=params,
query=query,
data=data,
credentials=credentials,
**kwargs
)
prepared = request.prepare()
# Try retrieve cached response
response = self._cache_lookup(prepared)
if response:
return response
# TODO retrying requests on 502, 503 errors?
# try:
# response = self.session.send(prepared)
# except socket.gaierror as e:
# code, _ = e
#
# if code != 8:
# raise e
#
# log.warn('Encountered socket.gaierror (code: 8)')
#
# response = self._build().send(prepared)
response = request.request.send()
# Store response in cache
self._cache_store(prepared, response)
return response
def get(self, path=None, params=None, query=None, data=None, **kwargs):
return self.request('GET', path, params, query, data, **kwargs)
def put(self, path=None, params=None, query=None, data=None, **kwargs):
return self.request('PUT', path, params, query, data, **kwargs)
def post(self, path=None, params=None, query=None, data=None, **kwargs):
return self.request('POST', path, params, query, data, **kwargs)
def delete(self, path=None, params=None, query=None, data=None, **kwargs):
return self.request('DELETE', path, params, query, data, **kwargs)
def _build(self):
if self.session:
log.info('Rebuilding session and connection pools...')
# Rebuild the connection pool (old pool has stale connections)
self.session = requests.Session()
return self.session
@synchronized
def _cache_lookup(self, request):
if self.cache is None:
return None
if request.method not in ['GET']:
return None
# Retrieve from cache
return self.cache.get(self._cache_key(request))
@synchronized
def _cache_store(self, request, response):
if self.cache is None:
return None
if request.method not in ['GET']:
return None
# Store in cache
self.cache[self._cache_key(request)] = response
@staticmethod
def _cache_key(request):
raw = ','.join([request.method, request.url])
# Generate MD5 hash of key
m = hashlib.md5()
m.update(raw.encode('utf-8'))
return m.hexdigest()
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
pass