class Dcache(object):
_nodeRing = None
_cachePool = {}
_cacheGen = CacheInterface
def __init__(self, nodes=[], rep=3, cache=RedisCache):
''' init all node to caches'''
if nodes:
self._nodeRing = CSHash(nodes=nodes, replicas=rep)
self._cacheGen = cache
for key, node in self._nodeRing.sorted_nodes():
if node not in self._cachePool:
self._cachePool[node] = self._cacheGen.alloc(node)
else:
raise DcacheException, 'try to init with no nodes\n'
def get_all_nodes(self, ):
for key, node in self._nodeRing.sorted_nodes():
yield key, node
def add_node(self, node):
''' add node to caches, preload the nearest
forward node data to self'''
for fnode in self._nodeRing.get_fnode(node):
try:
self.preload(fnode, node)
except Exception, ex:
raise DcacheException, '%s' % ex
self._nodeRing.add_node(node)
self._cachePool[node] = self._cacheGen.alloc(node)
class Dcache(object):
_nodeRing = None
_cachePool = {}
_cacheGen = CacheInterface
def __init__(self, nodes=[], rep=3, cache=RedisCache):
''' init all node to caches'''
if nodes:
self._nodeRing = CSHash(nodes=nodes, replicas=rep)
self._cacheGen = cache
for key, node in self._nodeRing.sorted_nodes():
if node not in self._cachePool:
self._cachePool[node] = self._cacheGen.alloc(node)
else:
raise DcacheException, 'try to init with no nodes\n'
def add_node(self, node):
''' add node to caches, preload the nearest
forward node data to self'''
for fnode in self._nodeRing.get_fnode(node):
try:
self.preload(fnode, node)
except Exception, ex:
raise DcacheException, '%s' % ex
self._nodeRing.add_node(node)
self._cachePool[node] = self._cacheGen.alloc(node)
def __init__(self, nodes=[], rep=3, cache=RedisCache):
''' init all node to caches'''
if nodes:
self._nodeRing = CSHash(nodes=nodes, replicas=rep)
self._cacheGen = cache
for key, node in self._nodeRing.sorted_nodes():
if node not in self._cachePool:
self._cachePool[node] = self._cacheGen.alloc(node)
else:
raise DcacheException, 'try to init with no nodes\n'
def __init__(self, nodes=[], rep=3, cache=RedisCache):
''' init all node to caches'''
if nodes:
self._nodeRing = CSHash(nodes=nodes, replicas=rep)
self._cacheGen = cache
for key, node in self._nodeRing.sorted_nodes():
if node not in self._cachePool:
self._cachePool[node] = self._cacheGen.alloc(node)
else:
raise DcacheException, 'try to init with no nodes\n'
