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add thread to tileserver to reload cache packages regularly

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This commit is contained in:
Laura Klünder 2017-11-21 02:47:38 +01:00
parent 2185c1ac6a
commit 82cbc3e4ed
1 changed files with 14 additions and 2 deletions
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16
src/c3nav/tileserver/wsgi.py
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@ -2,6 +2,7 @@ import base64
import logging
import os
import re
import threading
import time
from io import BytesIO
@ -53,6 +54,13 @@ class TileServer:
time.sleep(wait)
wait = min(2, wait*2)
threading.Thread(target=self.update_cache_package_thread, daemon=True).start()
def update_cache_package_thread(self):
while True:
time.sleep(60)
self.load_cache_package()
def load_cache_package(self):
logger.debug('Downloading cache package from upstream...')
try:
@ -77,8 +85,12 @@ class TileServer:
logger.error('Cache package download failed: %s' % e)
return False
self.cache_package = CachePackage.read(BytesIO(r.content))
self.cache_package_etag = r.headers.get('ETag', None)
try:
self.cache_package = CachePackage.read(BytesIO(r.content))
self.cache_package_etag = r.headers.get('ETag', None)
except Exception as e:
logger.error('Cache package parsing failed: %s' % e)
return False
return True
def not_found(self, start_response, text):