def process(self, user, request, resource, path, meta):
"""
Gets information about the event and reports it to the Redis pub/sub
"""
key = "%s.files" % user.get('id')
event = Event()
type = 'add'
if request.method == 'DELETE':
type = 'remove'
baseUri = ''
if request.env.has_key('BASE_URI'):
baseUri = request.env['BASE_URI']
uri = request.uri.replace(baseUri,'')
if request.method == 'POST':
commonString = utils.longestCommonSubstring(uri, path)
uri += path.replace(commonString,'')
elif request.method in ['COPY','MOVE']:
uri = urlparse.urlparse(request.env['HTTP_DESTINATION'])[2]
uri = uri.replace(baseUri,'')
baseUri = request.uri.replace(baseUri,'').replace(path,'')
if baseUri:
path = uri.replace(baseUri,'/')
else:
path = uri
meta = None
if type!='remove':
meta = resource.storageProvider.getMeta(path, user=user)
meta = meta[path]
timestamp = time.time()
data = {
'time': timestamp,
'type': type, # add|remove
'resource': uri,
'meta': meta
}
event.publish(key, data, timestamp)
if request.method == 'MOVE':
timestamp = time.time()
data = {
'time': timestamp,
'type': 'remove', # add|remove
'resource': request.uri,
'meta': None
}
event.publish(key, data, timestamp)
def process(self, user, request, resource, path, meta):
"""
Gets information about the event and reports it to the Redis pub/sub
"""
key = "%s.files" % user.get('id')
event = Event()
type = 'add'
if request.method == 'DELETE':
type = 'remove'
baseUri = ''
if request.env.has_key('BASE_URI'):
baseUri = request.env['BASE_URI']
uri = request.uri.replace(baseUri, '')
if request.method == 'POST':
commonString = utils.longestCommonSubstring(uri, path)
uri += path.replace(commonString, '')
elif request.method in ['COPY', 'MOVE']:
uri = urlparse.urlparse(request.env['HTTP_DESTINATION'])[2]
uri = uri.replace(baseUri, '')
baseUri = request.uri.replace(baseUri, '').replace(path, '')
if baseUri:
path = uri.replace(baseUri, '/')
else:
path = uri
meta = None
if type != 'remove':
meta = resource.storageProvider.getMeta(path, user=user)
meta = meta[path]
timestamp = time.time()
data = {
'time': timestamp,
'type': type, # add|remove
'resource': uri,
'meta': meta
}
event.publish(key, data, timestamp)
if request.method == 'MOVE':
timestamp = time.time()
data = {
'time': timestamp,
'type': 'remove', # add|remove
'resource': request.uri,
'meta': None
}
event.publish(key, data, timestamp)
def get_Files(self, request):
request.setResponseCode(200)
request.setHeader('Content-Type', 'text/event-stream')
request.setHeader('Expires', 'Fri, 01 Jan 1990 00:00:00 GMT')
request.setHeader('Cache-Control', 'no-cache, no-store, max-age=0, must-revalidate')
request.setHeader('Pragma','no-cache')
request.setHeader('Access-Control-Allow-Origin', '*')
retry = 1000 # retry time in miliseconds
wait = 15
if request.env.has_key('HTTP_X_SUBSCRIPTION_WAIT'):
try:
wait = int(request.env['HTTP_X_SUBSCRIPTION_WAIT'])
except Exception:
pass
# @todo: Figure out if the connection should be closed or not
close = True
eventQueue = Event()
userObject = self.getUser(request)
if not userObject:
return
lastId = None
try:
if request.env.has_key('HTTP_LAST_EVENT_ID'):
lastId = request.env['HTTP_LAST_EVENT_ID']
elif request.params.has_key('Last-Event-ID'):
lastId = request.params['Last-Event-ID']
if lastId is not None:
lastId = "%.4f" % lastId
except Exception:
pass
channel = "%s.files" % userObject.get('id')
events = eventQueue.subscribe(channel, lastId)
timeout = None
try:
"""
@warninig: If the connection is closed from haproxy for some reason
this connection is not recycled. That's why we close the
connection after 15 seconds (the haproxy timeout is set
to 20 seconds).
@todo: Figure out why the closing on the other side is not detected
and the connection hangs
@todo: Figure out how to set a timeout that sends noop command
every 15 seconds and keeps the connection alive for ever.
"""
if close:
timeout = Timeout(wait).start()
for event in events:
if request.env.has_key('BASE_URI'):
event = re.sub(r'"resource":\s*"(.*?)"', '"resource": "%s\\1"' % request.env['BASE_URI'], event)
if request.env.has_key('URI_REPLACE'):
match = re.search(r'"resource":\s*"(.*?)"', event)
if match:
uri = match.group(1).replace(request.env['URI_REPLACE'][0],request.env['URI_REPLACE'][1])
event = re.sub(r'"resource":\s*"(.*?)"', '"resource": "%s"' % uri, event)
text = ": %s\n" % ''.center(2049,' ') # 2kb padding for IE
text += "data: {\"files\": %s}\n" % event
match = re.search(r'"time":\s*([0-9.]+)',event)
if match:
text += "id: %s\n\n" % match.group(1)
yield text
if not close:
continue
# if we have to close then reset the timeout
if timeout is not None:
timeout.clear()
timeout = Timeout(wait).start()
yield ":noop\n"
except Timeout:
yield "retry: %d" % retry
finally:
if hasattr(events, 'close') and callable(events.close):
events.close()
if timeout is not None:
timeout.cancel()
def get_Files(self, request):
request.setResponseCode(200)
request.setHeader('Content-Type', 'text/event-stream')
request.setHeader('Expires', 'Fri, 01 Jan 1990 00:00:00 GMT')
request.setHeader('Cache-Control',
'no-cache, no-store, max-age=0, must-revalidate')
request.setHeader('Pragma', 'no-cache')
request.setHeader('Access-Control-Allow-Origin', '*')
retry = 1000 # retry time in miliseconds
wait = 15
if request.env.has_key('HTTP_X_SUBSCRIPTION_WAIT'):
try:
wait = int(request.env['HTTP_X_SUBSCRIPTION_WAIT'])
except Exception:
pass
# @todo: Figure out if the connection should be closed or not
close = True
eventQueue = Event()
userObject = self.getUser(request)
if not userObject:
return
lastId = None
try:
if request.env.has_key('HTTP_LAST_EVENT_ID'):
lastId = request.env['HTTP_LAST_EVENT_ID']
elif request.params.has_key('Last-Event-ID'):
lastId = request.params['Last-Event-ID']
if lastId is not None:
lastId = "%.4f" % lastId
except Exception:
pass
channel = "%s.files" % userObject.get('id')
events = eventQueue.subscribe(channel, lastId)
timeout = None
try:
"""
@warninig: If the connection is closed from haproxy for some reason
this connection is not recycled. That's why we close the
connection after 15 seconds (the haproxy timeout is set
to 20 seconds).
@todo: Figure out why the closing on the other side is not detected
and the connection hangs
@todo: Figure out how to set a timeout that sends noop command
every 15 seconds and keeps the connection alive for ever.
"""
if close:
timeout = Timeout(wait).start()
for event in events:
if request.env.has_key('BASE_URI'):
event = re.sub(
r'"resource":\s*"(.*?)"',
'"resource": "%s\\1"' % request.env['BASE_URI'], event)
if request.env.has_key('URI_REPLACE'):
match = re.search(r'"resource":\s*"(.*?)"', event)
if match:
uri = match.group(1).replace(
request.env['URI_REPLACE'][0],
request.env['URI_REPLACE'][1])
event = re.sub(r'"resource":\s*"(.*?)"',
'"resource": "%s"' % uri, event)
text = ": %s\n" % ''.center(2049, ' ') # 2kb padding for IE
text += "data: {\"files\": %s}\n" % event
match = re.search(r'"time":\s*([0-9.]+)', event)
if match:
text += "id: %s\n\n" % match.group(1)
yield text
if not close:
continue
# if we have to close then reset the timeout
if timeout is not None:
timeout.clear()
timeout = Timeout(wait).start()
yield ":noop\n"
except Timeout:
yield "retry: %d" % retry
finally:
if hasattr(events, 'close') and callable(events.close):
events.close()
if timeout is not None:
timeout.cancel()
