def create_cassandra_permacache_column_family(config):
sys = SystemManager(config.get('DEFAULT', 'cassandra_seeds'))
if 'permacache' in sys.get_keyspace_column_families(config.get('DEFAULT', 'cassandra_keyspace')).keys():
print "found permacache, not creating"
return
print "creating %r / 'permacache'" % (config.get('DEFAULT', 'cassandra_keyspace'),)
sys.create_column_family(config.get('DEFAULT', 'cassandra_keyspace'), 'permacache', super=False, comparator_type=BYTES_TYPE, row_cache_provider='org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider')
print "created permacache"
def colum_family_list(self,machine_id,keyspace_name):
"""List all column family in a given keyspace """
print "->>>in column family list function"
sys = SystemManager(machine_id)
result = sys.get_keyspace_column_families('TK1', use_dict_for_col_metadata=True)
x=[]
for key in result:
print key
x.append(key)
return x
def colum_family_list(self,machine_id,keyspace_name): """List all column family in a given keyspace """ if (self.keyspace_contains(keyspace_name) == False): print "Error : Keyspace with this name dosenot exist." return False sys = SystemManager(machine_id) result = sys.get_keyspace_column_families(keyspace_name, use_dict_for_col_metadata=True) x=[] for key in result: x.append(key) return x
def colum_family_list(self, machine_id, keyspace_name):
"""List all column family in a given keyspace """
if (self.keyspace_contains(keyspace_name) == False):
print "Error : Keyspace with this name dosenot exist."
return False
sys = SystemManager(machine_id)
result = sys.get_keyspace_column_families(
keyspace_name, use_dict_for_col_metadata=True)
x = []
for key in result:
x.append(key)
return x
def keyspace_columnfamily_list(self,machine_id): """Returns dictionary of all keyspace with their column family on specified machine_id """ sys = SystemManager(machine_id) keyspace.complete_list.clear() keyspace_list = sys.list_keyspaces() for key in keyspace_list: x=[] result = sys.get_keyspace_column_families(key, use_dict_for_col_metadata=True) for i in result: x.append(i) keyspace.complete_list[key] = x sys.close() return keyspace.complete_list
def cassandra_changed():
import pycassa
# relation-get:
# port: "9160"
# private-address: 10.0.3.147
host = hookenv.relation_get('private-address')
port = hookenv.relation_get('port')
if host and port:
casshost = '%s:%d' % (host, int(port))
log("Connecting to Cassandra host: %s" % casshost)
sys = pycassa.system_manager.SystemManager(casshost)
# Create 'reddit' keyspace
keyspaces = sys.list_keyspaces()
if CASSANDRA_KEYSPACE not in keyspaces:
sys.create_keyspace(
CASSANDRA_KEYSPACE,
pycassa.system_manager.SIMPLE_STRATEGY,
{'replication_factor': '1'}
)
log("Created '%s' keyspace" % CASSANDRA_KEYSPACE)
else:
log("'%s' keyspace already exists." % CASSANDRA_KEYSPACE)
column_families = sys.get_keyspace_column_families(
CASSANDRA_KEYSPACE
).keys()
if CASSANDRA_COLUMN not in column_families:
sys.create_column_family(
CASSANDRA_KEYSPACE,
CASSANDRA_COLUMN,
column_type='Standard',
default_validation_class=pycassa.BYTES_TYPE
)
log("Created '%s' column" % CASSANDRA_COLUMN)
else:
log("'%s' column already exists" % CASSANDRA_COLUMN)
add_to_ini(values={
'cassandra_seeds': casshost
})
make_ini()
else:
log("cassandra not ready")
return
def keyspace_columnfamily_list(self, machine_id):
"""Returns dictionary of all keyspace with their column family on specified machine_id """
sys = SystemManager(machine_id)
keyspace.complete_list.clear()
keyspace_list = sys.list_keyspaces()
for key in keyspace_list:
x = []
result = sys.get_keyspace_column_families(
key, use_dict_for_col_metadata=True)
for i in result:
x.append(i)
keyspace.complete_list[key] = x
sys.close()
return keyspace.complete_list
def keyspace_contains(self,machine_id,keyspace_name,column_family_name = ''): """Returns true if keyspace with given name and/or column family is on specified machine_id """ sys = SystemManager(machine_id) keyspace.complete_list.clear() keyspace_list = sys.list_keyspaces() for key in keyspace_list: if (key == keyspace_name): if(column_family_name): column_family_list = sys.get_keyspace_column_families(key, use_dict_for_col_metadata=True) for cf in column_family_list: if(cf == column_family_name): return True return False else: return True return False
def colum_family_list(self,machine_id,keyspace_name): """List all column family in a given keyspace """ keyspace.error = "Unknown error occur please check your inputs" if (self.keyspace_contains(keyspace.local_system, keyspace_name) == False): keyspace.error = "Desired Keyspace does not exist." return False try: sys = SystemManager(machine_id) except Exception as e: print e return False try: result = sys.get_keyspace_column_families(keyspace_name, use_dict_for_col_metadata=True) except Exception as e: print e return False x=[] for key in result: x.append(key) return x
