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# Copyright DataStax, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import time
from collections import defaultdict
from packaging.version import Version
from tests.integration import (get_node, get_cluster, wait_for_node_socket,
DSE_VERSION, CASSANDRA_VERSION)
IP_FORMAT = '127.0.0.%s'
log = logging.getLogger(__name__)
class CoordinatorStats():
def __init__(self):
self.coordinator_counts = defaultdict(int)
def add_coordinator(self, future):
log.debug('adding coordinator from {}'.format(future))
future.result()
coordinator = future._current_host.address
self.coordinator_counts[coordinator] += 1
if future._errors:
log.error('future._errors: %s', future._errors)
def reset_counts(self):
self.coordinator_counts = defaultdict(int)
def get_query_count(self, node):
ip = '127.0.0.%d' % node
return self.coordinator_counts[ip]
def assert_query_count_equals(self, testcase, node, expected):
ip = '127.0.0.%d' % node
if self.get_query_count(node) != expected:
testcase.fail('Expected %d queries to %s, but got %d. Query counts: %s' % (
expected, ip, self.coordinator_counts[ip], dict(self.coordinator_counts)))
def create_schema(cluster, session, keyspace, simple_strategy=True,
replication_factor=1, replication_strategy=None):
if keyspace in cluster.metadata.keyspaces.keys():
session.execute('DROP KEYSPACE %s' % keyspace, timeout=20)
if simple_strategy:
ddl = "CREATE KEYSPACE %s WITH replication" \
" = {'class': 'SimpleStrategy', 'replication_factor': '%s'}"
session.execute(ddl % (keyspace, replication_factor), timeout=10)
else:
if not replication_strategy:
raise Exception('replication_strategy is not set')
ddl = "CREATE KEYSPACE %s" \
" WITH replication = { 'class' : 'NetworkTopologyStrategy', %s }"
session.execute(ddl % (keyspace, str(replication_strategy)[1:-1]), timeout=10)
ddl = 'CREATE TABLE %s.cf (k int PRIMARY KEY, i int)'
session.execute(ddl % keyspace, timeout=10)
session.execute('USE %s' % keyspace)
def start(node):
get_node(node).start()
def stop(node):
get_node(node).stop()
def force_stop(node):
log.debug("Forcing stop of node %s", node)
get_node(node).stop(wait=False, gently=False)
log.debug("Node %s was stopped", node)
def decommission(node):
if (DSE_VERSION and DSE_VERSION >= Version("5.1")) or CASSANDRA_VERSION >= Version("4.0-a"):
# CASSANDRA-12510
get_node(node).decommission(force=True)
else:
get_node(node).decommission()
get_node(node).stop()
def bootstrap(node, data_center=None, token=None):
log.debug('called bootstrap('
'node={node}, data_center={data_center}, '
'token={token})')
cluster = get_cluster()
# for now assumes cluster has at least one node
node_type = type(next(iter(cluster.nodes.values())))
node_instance = node_type(
'node%s' % node,
cluster,
auto_bootstrap=False,
thrift_interface=(IP_FORMAT % node, 9160),
storage_interface=(IP_FORMAT % node, 7000),
binary_interface=(IP_FORMAT % node, 9042),
jmx_port=str(7000 + 100 * node),
remote_debug_port=0,
initial_token=token if token else node * 10
)
cluster.add(node_instance, is_seed=False, data_center=data_center)
try:
node_instance.start()
except Exception as e0:
log.debug('failed 1st bootstrap attempt with: \n{}'.format(e0))
# Try only twice
try:
node_instance.start()
except Exception as e1:
log.debug('failed 2nd bootstrap attempt with: \n{}'.format(e1))
log.error('Added node failed to start twice.')
raise e1
def ring(node):
get_node(node).nodetool('ring')
def wait_for_up(cluster, node):
tries = 0
addr = IP_FORMAT % node
while tries < 100:
host = cluster.metadata.get_host(addr)
if host and host.is_up:
wait_for_node_socket(get_node(node), 60)
log.debug("Done waiting for node %s to be up", node)
return
else:
log.debug("Host {} is still marked down, waiting".format(addr))
tries += 1
time.sleep(1)
# todo: don't mix string interpolation methods in the same package
raise RuntimeError("Host {0} is not up after {1} attempts".format(addr, tries))
def wait_for_down(cluster, node):
log.debug("Waiting for node %s to be down", node)
tries = 0
addr = IP_FORMAT % node
while tries < 100:
host = cluster.metadata.get_host(IP_FORMAT % node)
if not host or not host.is_up:
log.debug("Done waiting for node %s to be down", node)
return
else:
log.debug("Host is still marked up, waiting")
tries += 1
time.sleep(1)
raise RuntimeError("Host {0} is not down after {1} attempts".format(addr, tries))
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