import os
import random
import re
import shutil
import tempfile
import threading
import time
import logging
import signal

from cassandra import ConsistencyLevel
from cassandra.concurrent import execute_concurrent_with_args
from ccmlib.node import NodeError, TimeoutError, ToolError, Node

import pytest

from distutils.version import LooseVersion

from dtest import Tester, create_ks, create_cf, data_size
from tools.assertions import (assert_almost_equal, assert_bootstrap_state, assert_not_running,
                              assert_one, assert_stderr_clean)
from tools.data import query_c1c2
from tools.intervention import InterruptBootstrap, KillOnBootstrap, KillOnReadyToBootstrap
from tools.misc import new_node, generate_ssl_stores

since = pytest.mark.since
logger = logging.getLogger(__name__)

class TestBootstrap(Tester):
    byteman_submit_path_pre_4_0 = './byteman/pre4.0/stream_failure.btm'
    byteman_submit_path_4_0 = './byteman/4.0/stream_failure.btm'

    @pytest.fixture(autouse=True)
    def fixture_add_additional_log_patterns(self, fixture_dtest_setup):
        fixture_dtest_setup.allow_log_errors = True
        fixture_dtest_setup.ignore_log_patterns = (
            # This one occurs when trying to send the migration to a
            # node that hasn't started yet, and when it does, it gets
            # replayed and everything is fine.
            r'Can\'t send migration request: node.*is down',
            # ignore streaming error during bootstrap
            r'Exception encountered during startup',
            r'Streaming error occurred'
        )

    def _base_bootstrap_test(self, bootstrap=None, bootstrap_from_version=None,
                             enable_ssl=None):
        def default_bootstrap(cluster, token):
            node2 = new_node(cluster)
            node2.set_configuration_options(values={'initial_token': token})
            node2.start(wait_for_binary_proto=True)
            return node2

        if bootstrap is None:
            bootstrap = default_bootstrap

        cluster = self.cluster

        if enable_ssl:
            logger.debug("***using internode ssl***")
            generate_ssl_stores(self.fixture_dtest_setup.test_path)
            cluster.enable_internode_ssl(self.fixture_dtest_setup.test_path)

        tokens = cluster.balanced_tokens(2)
        cluster.set_configuration_options(values={'num_tokens': 1})

        logger.debug("[node1, node2] tokens: %r" % (tokens,))

        keys = 10000

        # Create a single node cluster
        cluster.populate(1)
        node1 = cluster.nodelist()[0]
        if bootstrap_from_version:
            logger.debug("starting source node on version {}".format(bootstrap_from_version))
            node1.set_install_dir(version=bootstrap_from_version)
        node1.set_configuration_options(values={'initial_token': tokens[0]})
        cluster.start()

        session = self.patient_cql_connection(node1)
        create_ks(session, 'ks', 1)
        create_cf(session, 'cf', columns={'c1': 'text', 'c2': 'text'})

        # record the size before inserting any of our own data
        empty_size = data_size(node1, 'ks','cf')
        logger.debug("node1 empty size for ks.cf: %s" % float(empty_size))

        insert_statement = session.prepare("INSERT INTO ks.cf (key, c1, c2) VALUES (?, 'value1', 'value2')")
        execute_concurrent_with_args(session, insert_statement, [['k%d' % k] for k in range(keys)])

        node1.flush()
        node1.compact()
        initial_size = data_size(node1,'ks','cf')
        logger.debug("node1 size for ks.cf before bootstrapping node2: %s" % float(initial_size))

        # Reads inserted data all during the bootstrap process. We shouldn't
        # get any error
        query_c1c2(session, random.randint(0, keys - 1), ConsistencyLevel.ONE)
        session.shutdown()

        # Bootstrapping a new node in the current version
        node2 = bootstrap(cluster, tokens[1])
        node2.compact()

        node1.cleanup()
        logger.debug("node1 size for ks.cf after cleanup: %s" % float(data_size(node1,'ks','cf')))
        node1.compact()
        logger.debug("node1 size for ks.cf after compacting: %s" % float(data_size(node1,'ks','cf')))

        logger.debug("node2 size for ks.cf after compacting: %s" % float(data_size(node2,'ks','cf')))

        size1 = float(data_size(node1,'ks','cf'))
        size2 = float(data_size(node2,'ks','cf'))
        assert_almost_equal(size1, size2, error=0.3)
        assert_almost_equal(float(initial_size - empty_size), 2 * (size1 - float(empty_size)))

        assert_bootstrap_state(self, node2, 'COMPLETED')

    @pytest.mark.no_vnodes
    def test_simple_bootstrap_with_ssl(self):
        self._base_bootstrap_test(enable_ssl=True)

    @pytest.mark.no_vnodes
    def test_simple_bootstrap(self):
        self._base_bootstrap_test()

    @pytest.mark.no_vnodes
    def test_bootstrap_on_write_survey(self):
        def bootstrap_on_write_survey_and_join(cluster, token):
            node2 = new_node(cluster)
            node2.set_configuration_options(values={'initial_token': token})
            node2.start(jvm_args=["-Dcassandra.write_survey=true"], wait_for_binary_proto=True)

            assert len(node2.grep_log('Startup complete, but write survey mode is active, not becoming an active ring member.'))
            assert_bootstrap_state(self, node2, 'IN_PROGRESS')

            node2.nodetool("join")
            assert len(node2.grep_log('Leaving write survey mode and joining ring at operator request'))
            return node2

        self._base_bootstrap_test(bootstrap_on_write_survey_and_join)

    def _test_bootstrap_with_compatibility_flag_on(self, bootstrap_from_version):
        def bootstrap_with_compatibility_flag_on(cluster, token):
            node2 = new_node(cluster)
            node2.set_configuration_options(values={'initial_token': token})
            # cassandra.force_3_0_protocol_version parameter is needed to allow schema
            # changes during the bootstrapping for upgrades from 3.0.14+ to anything upwards for 3.0.x or 3.x clusters.
            # @jira_ticket CASSANDRA-13004 for detailed context on `cassandra.force_3_0_protocol_version` flag
            node2.start(jvm_args=["-Dcassandra.force_3_0_protocol_version=true"],
                        wait_for_binary_proto=True)
            return node2

        self._base_bootstrap_test(bootstrap_with_compatibility_flag_on,
                                      bootstrap_from_version=bootstrap_from_version)

    @since('3.10')
    @pytest.mark.no_vnodes
    def test_simple_bootstrap_small_keepalive_period(self):
        """
        @jira_ticket CASSANDRA-11841
        Test that bootstrap completes if it takes longer than streaming_socket_timeout_in_ms or
        2*streaming_keep_alive_period_in_secs to receive a single sstable
        """
        cluster = self.cluster
        yaml_opts = {'streaming_keep_alive_period_in_secs': 2}
        if cluster.version() < '4.0':
            yaml_opts['streaming_socket_timeout_in_ms'] = 1000
        cluster.set_configuration_options(values=yaml_opts)

        # Create a single node cluster
        cluster.populate(1)
        node1 = cluster.nodelist()[0]

        logger.debug("Setting up byteman on {}".format(node1.name))
        # set up byteman
        node1.byteman_port = '8100'
        node1.import_config_files()

        cluster.start()

        # Create more than one sstable larger than 1MB
        node1.stress(['write', 'n=1K', '-rate', 'threads=8', '-schema',
                      'compaction(strategy=SizeTieredCompactionStrategy, enabled=false)'])
        cluster.flush()

        logger.debug("Submitting byteman script to {} to".format(node1.name))
        # Sleep longer than streaming_socket_timeout_in_ms to make sure the node will not be killed
        node1.byteman_submit(['./byteman/stream_5s_sleep.btm'])

        # Bootstraping a new node with very small streaming_socket_timeout_in_ms
        node2 = new_node(cluster)
        node2.start(wait_for_binary_proto=True)

        # Shouldn't fail due to streaming socket timeout timeout
        assert_bootstrap_state(self, node2, 'COMPLETED')

        for node in cluster.nodelist():
            assert node.grep_log('Scheduling keep-alive task with 2s period.', filename='debug.log')
            assert node.grep_log('Sending keep-alive', filename='debug.log')
            assert node.grep_log('Received keep-alive', filename='debug.log')

    def test_simple_bootstrap_nodata(self):
        """
        @jira_ticket CASSANDRA-11010
        Test that bootstrap completes if streaming from nodes with no data
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        # Create a two-node cluster
        cluster.populate(2)
        cluster.start()

        # Bootstrapping a new node
        node3 = new_node(cluster)
        node3.start(wait_for_binary_proto=True)

        assert_bootstrap_state(self, node3, 'COMPLETED')

    def test_read_from_bootstrapped_node(self):
        """
        Test bootstrapped node sees existing data
        @jira_ticket CASSANDRA-6648
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(3)
        cluster.start()

        node1 = cluster.nodes['node1']
        node1.stress(['write', 'n=10K', 'no-warmup', '-rate', 'threads=8', '-schema', 'replication(factor=2)'])

        session = self.patient_cql_connection(node1)
        stress_table = 'keyspace1.standard1'
        original_rows = list(session.execute("SELECT * FROM %s" % (stress_table,)))

        node4 = new_node(cluster)
        node4.start(wait_for_binary_proto=True)

        session = self.patient_exclusive_cql_connection(node4)
        new_rows = list(session.execute("SELECT * FROM %s" % (stress_table,)))
        assert original_rows == new_rows

    @since('3.0')
    def test_bootstrap_waits_for_streaming_to_finish(self):
             """
             Test that bootstrap completes and is marked as such after streaming finishes.
             """

             cluster = self.cluster
             cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')

             logger.debug("Create a cluster")
             cluster.populate(1)
             node1 = cluster.nodelist()[0]

             logger.debug("Start node 1")
             node1.start(wait_for_binary_proto=True)

             logger.debug("Insert 10k rows")
             node1.stress(['write', 'n=10K', 'no-warmup', '-rate', 'threads=8', '-schema', 'replication(factor=2)'])

             logger.debug("Bootstrap node 2 with delay")
             node2 = new_node(cluster, byteman_port='4200')
             node2.update_startup_byteman_script('./byteman/bootstrap_5s_sleep.btm')
             node2.start(wait_for_binary_proto=True)

             assert_bootstrap_state(self, node2, 'COMPLETED')
             assert node2.grep_log('Bootstrap completed', filename='debug.log')

    def test_consistent_range_movement_true_with_replica_down_should_fail(self):
        self._bootstrap_test_with_replica_down(True)

    def test_consistent_range_movement_false_with_replica_down_should_succeed(self):
        self._bootstrap_test_with_replica_down(False)

    def test_consistent_range_movement_true_with_rf1_should_fail(self):
        self._bootstrap_test_with_replica_down(True, rf=1)

    def test_consistent_range_movement_false_with_rf1_should_succeed(self):
        self._bootstrap_test_with_replica_down(False, rf=1)

    def test_rf_gt_nodes_multidc_should_succeed(self):
        """
        Validating a KS with RF > N on multi DC doesn't break bootstrap
        @jira_ticket CASSANDRA-16296 CASSANDRA-16411
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate([1, 1])
        cluster.start()

        node1 = cluster.nodelist()[0]
        node2 = cluster.nodelist()[1]
        session = self.patient_exclusive_cql_connection(node1)
        session.execute("CREATE KEYSPACE k WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'dc1' : '3'}")

        if cluster.version() >= '4.0':
            warning = 'Your replication factor 3 for keyspace k is higher than the number of nodes 1 for datacenter dc1'
            assert len(node1.grep_log(warning)) == 1
            assert len(node2.grep_log(warning)) == 0

        session.execute("ALTER KEYSPACE k WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'dc1' : '2'}")
        session.execute("CREATE TABLE k.testgtrfmultidc (KEY text PRIMARY KEY)")
        session.execute("INSERT INTO k.testgtrfmultidc (KEY) VALUES ('test_rf_gt_nodes_multidc_should_succeed')")

        if cluster.version() >= '4.0':
            warning = 'Your replication factor 2 for keyspace k is higher than the number of nodes 1 for datacenter dc1'
            assert len(node1.grep_log(warning)) == 1
            assert len(node2.grep_log(warning)) == 0

        marks = map(lambda n: n.mark_log(), cluster.nodelist())
        node3 = Node(name='node3',
                     cluster=cluster,
                     auto_bootstrap=True,
                     thrift_interface=('127.0.0.3', 9160),
                     storage_interface=('127.0.0.3', 7000),
                     jmx_port='7300',
                     remote_debug_port='0',
                     initial_token=None,
                     binary_interface=('127.0.0.3', 9042))
        cluster.add(node3, is_seed=False, data_center="dc1")
        node3.start(wait_for_binary_proto=True)
        if cluster.version() >= '4.0':
            warning = 'is higher than the number of nodes'
            for (node, mark) in zip(cluster.nodelist(), marks):
                assert len(node.grep_log(warning, from_mark=mark)) == 0

        session3 = self.patient_exclusive_cql_connection(node3)
        assert_one(session3, "SELECT * FROM k.testgtrfmultidc", ["test_rf_gt_nodes_multidc_should_succeed"])

    def _bootstrap_test_with_replica_down(self, consistent_range_movement, rf=2):
        """
        Test to check consistent bootstrap will not succeed when there are insufficient replicas
        @jira_ticket CASSANDRA-11848
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')

        cluster.populate(2)
        node1, node2 = cluster.nodelist()

        node3_token = None
        # Make token assignment deterministic
        if not self.dtest_config.use_vnodes:
            cluster.set_configuration_options(values={'num_tokens': 1})
            tokens = cluster.balanced_tokens(3)
            logger.debug("non-vnode tokens: %r" % (tokens,))
            node1.set_configuration_options(values={'initial_token': tokens[0]})
            node2.set_configuration_options(values={'initial_token': tokens[2]})
            node3_token = tokens[1]  # Add node 3 between node1 and node2

        cluster.start()

        node1.stress(['write', 'n=10K', 'no-warmup', '-rate', 'threads=8', '-schema', 'replication(factor={})'.format(rf)])

        # change system_auth keyspace to 2 (default is 1) to avoid
        # "Unable to find sufficient sources for streaming" warning
        if cluster.cassandra_version() >= '2.2.0':
            session = self.patient_cql_connection(node1)
            session.execute("""
                ALTER KEYSPACE system_auth
                    WITH replication = {'class':'SimpleStrategy', 'replication_factor':2};
            """)

        # Stop node2, so node3 will not be able to perform consistent range movement
        node2.stop(wait_other_notice=True)

        successful_bootstrap_expected = not consistent_range_movement

        node3 = new_node(cluster, token=node3_token)
        node3.start(wait_for_binary_proto=successful_bootstrap_expected, wait_other_notice=successful_bootstrap_expected,
                    jvm_args=["-Dcassandra.consistent.rangemovement={}".format(consistent_range_movement)])

        if successful_bootstrap_expected:
            # with rf=1 and cassandra.consistent.rangemovement=false, missing sources are ignored
            if not consistent_range_movement and rf == 1:
                node3.watch_log_for("Unable to find sufficient sources for streaming range")
            assert node3.is_running()
            assert_bootstrap_state(self, node3, 'COMPLETED')
        else:
            if consistent_range_movement:
                if cluster.version() < '4.0':
                    node3.watch_log_for("A node required to move the data consistently is down")
                else:
                    node3.watch_log_for("Necessary replicas for strict consistency were removed by source filters")
            else:
                node3.watch_log_for("Unable to find sufficient sources for streaming range")
            assert_not_running(node3)

    @since('2.2')
    def test_resumable_bootstrap(self):
        """
        Test resuming bootstrap after data streaming failure
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(2)

        node1 = cluster.nodes['node1']
        # set up byteman
        node1.byteman_port = '8100'
        node1.import_config_files()

        cluster.start()
        # kill stream to node3 in the middle of streaming to let it fail
        if cluster.version() < '4.0':
            node1.byteman_submit([self.byteman_submit_path_pre_4_0])
        else:
            node1.byteman_submit([self.byteman_submit_path_4_0])
        node1.stress(['write', 'n=1K', 'no-warmup', 'cl=TWO', '-schema', 'replication(factor=2)', '-rate', 'threads=50'])
        cluster.flush()

        # start bootstrapping node3 and wait for streaming
        node3 = new_node(cluster)
        node3.start(wait_other_notice=False)

        # let streaming fail as we expect
        node3.watch_log_for('Some data streaming failed')

        # bring back node3 and invoke nodetool bootstrap to resume bootstrapping
        node3.nodetool('bootstrap resume')
        node3.wait_for_binary_interface()
        assert_bootstrap_state(self, node3, 'COMPLETED')

        # cleanup to guarantee each node will only have sstables of its ranges
        cluster.cleanup()

        logger.debug("Check data is present")
        # Let's check stream bootstrap completely transferred data
        stdout, stderr, _ = node3.stress(['read', 'n=1k', 'no-warmup', '-schema', 'replication(factor=2)', '-rate', 'threads=8'])

        if stdout is not None:
            assert "FAILURE" not in stdout

    @since('2.2')
    def test_bootstrap_with_reset_bootstrap_state(self):
        """Test bootstrap with resetting bootstrap progress"""
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.set_configuration_options(values={'stream_throughput_outbound_megabits_per_sec': 1})
        cluster.populate(2).start()

        node1 = cluster.nodes['node1']
        node1.stress(['write', 'n=100K', '-schema', 'replication(factor=2)'])
        node1.flush()

        # kill node1 in the middle of streaming to let it fail
        t = InterruptBootstrap(node1)
        t.start()

        # start bootstrapping node3 and wait for streaming
        node3 = new_node(cluster)
        try:
            node3.start()
        except NodeError:
            pass  # node doesn't start as expected
        t.join()
        node1.start()

        # restart node3 bootstrap with resetting bootstrap progress
        node3.stop(signal_event=signal.SIGKILL)
        mark = node3.mark_log()
        node3.start(jvm_args=["-Dcassandra.reset_bootstrap_progress=true"])
        # check if we reset bootstrap state
        node3.watch_log_for("Resetting bootstrap progress to start fresh", from_mark=mark)
        # wait for node3 ready to query, 180s as the node needs to bootstrap
        node3.wait_for_binary_interface(from_mark=mark, timeout=180)

        # check if 2nd bootstrap succeeded
        assert_bootstrap_state(self, node3, 'COMPLETED')

    def test_manual_bootstrap(self):
        """
            Test adding a new node and bootstrapping it manually. No auto_bootstrap.
            This test also verify that all data are OK after the addition of the new node.
            @jira_ticket CASSANDRA-9022
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(2).start()
        (node1, node2) = cluster.nodelist()

        node1.stress(['write', 'n=1K', 'no-warmup', '-schema', 'replication(factor=2)',
                      '-rate', 'threads=1', '-pop', 'dist=UNIFORM(1..1000)'])

        session = self.patient_exclusive_cql_connection(node2)
        stress_table = 'keyspace1.standard1'

        original_rows = list(session.execute("SELECT * FROM %s" % stress_table))

        # Add a new node
        node3 = new_node(cluster, bootstrap=False)
        node3.start(wait_for_binary_proto=True)
        node3.repair()
        node1.cleanup()

        current_rows = list(session.execute("SELECT * FROM %s" % stress_table))
        assert original_rows == current_rows

    def test_local_quorum_bootstrap(self):
        """
        Test that CL local_quorum works while a node is bootstrapping.
        @jira_ticket CASSANDRA-8058
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate([1, 1])
        cluster.start()

        node1 = cluster.nodes['node1']
        yaml_config = """
        # Create the keyspace and table
        keyspace: keyspace1
        keyspace_definition: |
          CREATE KEYSPACE keyspace1 WITH replication = {'class': 'NetworkTopologyStrategy', 'dc1': 1, 'dc2': 1};
        table: users
        table_definition:
          CREATE TABLE users (
            username text,
            first_name text,
            last_name text,
            email text,
            PRIMARY KEY(username)
          ) WITH compaction = {'class':'SizeTieredCompactionStrategy'};
        insert:
          partitions: fixed(1)
          batchtype: UNLOGGED
        queries:
          read:
            cql: select * from users where username = ?
            fields: samerow
        """
        with tempfile.NamedTemporaryFile(mode='w+') as stress_config:
            stress_config.write(yaml_config)
            stress_config.flush()
            node1.stress(['user', 'profile=' + stress_config.name, 'n=200K', 'no-warmup',
                          'ops(insert=1)', '-rate', 'threads=10'])

            node3 = new_node(cluster, data_center='dc2')
            node3.start(jvm_args=["-Dcassandra.write_survey=true"], no_wait=True)

            node3_seen = False
            for _ in range(30):  # give node3 up to 30 seconds to start
                ntout = node1.nodetool('status').stdout
                if re.search(r'UJ\s+' + node3.ip_addr, ntout):
                    node3_seen = True
                    break
                time.sleep(1)

            assert node3_seen, "expected {} in status:\n{}".format(node3.ip_addr, ntout)

            out, err, _ = node1.stress(['user', 'profile=' + stress_config.name, 'ops(insert=1)',
                                        'n=10k', 'no-warmup', 'cl=LOCAL_QUORUM',
                                        '-rate', 'threads=10',
                                        '-errors', 'retries=2'])
            ntout = node1.nodetool('status').stdout
            assert re.search(r'UJ\s+' + node3.ip_addr, ntout), ntout

        logger.debug(out)
        assert_stderr_clean(err)
        regex = re.compile("Operation.+error inserting key.+Exception")
        failure = regex.search(str(out))
        assert failure is None, "Error during stress while bootstrapping"

    def test_shutdown_wiped_node_cannot_join(self):
        self._wiped_node_cannot_join_test(gently=True)

    def test_killed_wiped_node_cannot_join(self):
        self._wiped_node_cannot_join_test(gently=False)

    def _wiped_node_cannot_join_test(self, gently):
        """
        @jira_ticket CASSANDRA-9765
        Test that if we stop a node and wipe its data then the node cannot join
        when it is not a seed. Test both a nice shutdown or a forced shutdown, via
        the gently parameter.
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(3)
        cluster.start()

        stress_table = 'keyspace1.standard1'

        # write some data
        node1 = cluster.nodelist()[0]
        node1.stress(['write', 'n=10K', 'no-warmup', '-rate', 'threads=8'])

        session = self.patient_cql_connection(node1)
        original_rows = list(session.execute("SELECT * FROM {}".format(stress_table,)))

        # Add a new node, bootstrap=True ensures that it is not a seed
        node4 = new_node(cluster, bootstrap=True)
        node4.start(wait_for_binary_proto=True)

        session = self.patient_cql_connection(node4)
        assert original_rows == list(session.execute("SELECT * FROM {}".format(stress_table,)))

        # Stop the new node and wipe its data
        node4.stop(gently=gently)
        self._cleanup(node4)
        # Now start it, it should not be allowed to join.
        mark = node4.mark_log()
        node4.start(no_wait=True, wait_other_notice=False)
        node4.watch_log_for("A node with address {} already exists, cancelling join".format(node4.address_for_current_version_slashy()), from_mark=mark)

    def test_decommissioned_wiped_node_can_join(self):
        """
        @jira_ticket CASSANDRA-9765
        Test that if we decommission a node and then wipe its data, it can join the cluster.
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(3)
        cluster.start()

        stress_table = 'keyspace1.standard1'

        # write some data
        node1 = cluster.nodelist()[0]
        node1.stress(['write', 'n=10K', 'no-warmup', '-rate', 'threads=8'])

        session = self.patient_cql_connection(node1)
        original_rows = list(session.execute("SELECT * FROM {}".format(stress_table,)))

        # Add a new node, bootstrap=True ensures that it is not a seed
        node4 = new_node(cluster, bootstrap=True)
        node4.start(wait_for_binary_proto=True)

        session = self.patient_cql_connection(node4)
        assert original_rows == list(session.execute("SELECT * FROM {}".format(stress_table,)))

        # Decommission the new node and wipe its data
        node4.decommission()
        node4.stop()
        self._cleanup(node4)
        # Now start it, it should be allowed to join
        mark = node4.mark_log()
        node4.start()
        node4.watch_log_for("JOINING:", from_mark=mark)

    def test_decommissioned_wiped_node_can_gossip_to_single_seed(self):
        """
        @jira_ticket CASSANDRA-8072
        @jira_ticket CASSANDRA-8422
        Test that if we decommission a node, kill it and wipe its data, it can join a cluster with a single
        seed node.
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(1)
        cluster.start()

        node1 = cluster.nodelist()[0]
        # Add a new node, bootstrap=True ensures that it is not a seed
        node2 = new_node(cluster, bootstrap=True)
        node2.start(wait_for_binary_proto=True)

        session = self.patient_cql_connection(node1)

        if cluster.version() >= '2.2':
            # reduce system_distributed RF to 2 so we don't require forceful decommission
            session.execute("ALTER KEYSPACE system_distributed WITH REPLICATION = {'class':'SimpleStrategy', 'replication_factor':'1'};")

        session.execute("ALTER KEYSPACE system_traces WITH REPLICATION = {'class':'SimpleStrategy', 'replication_factor':'1'};")

        # Decommision the new node and kill it
        logger.debug("Decommissioning & stopping node2")
        node2.decommission()
        node2.stop(wait_other_notice=False)

        # Wipe its data
        for data_dir in node2.data_directories():
            logger.debug("Deleting {}".format(data_dir))
            shutil.rmtree(data_dir)

        commitlog_dir = os.path.join(node2.get_path(), 'commitlogs')
        logger.debug("Deleting {}".format(commitlog_dir))
        shutil.rmtree(commitlog_dir)

        # Now start it, it should be allowed to join
        mark = node2.mark_log()
        logger.debug("Restarting wiped node2")
        node2.start(wait_other_notice=False)
        node2.watch_log_for("JOINING:", from_mark=mark)

    def test_failed_bootstrap_wiped_node_can_join(self):
        """
        @jira_ticket CASSANDRA-9765
        Test that if a node fails to bootstrap, it can join the cluster even if the data is wiped.
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(1)
        cluster.set_configuration_options(values={'stream_throughput_outbound_megabits_per_sec': 1})
        cluster.start()

        stress_table = 'keyspace1.standard1'

        # write some data, enough for the bootstrap to fail later on
        node1 = cluster.nodelist()[0]
        node1.stress(['write', 'n=100K', 'no-warmup', '-rate', 'threads=8'])
        node1.flush()

        session = self.patient_cql_connection(node1)
        original_rows = list(session.execute("SELECT * FROM {}".format(stress_table,)))

        # Add a new node, bootstrap=True ensures that it is not a seed
        node2 = new_node(cluster, bootstrap=True)

        # kill node2 in the middle of bootstrap
        t = KillOnBootstrap(node2)
        t.start()

        node2.start()
        t.join()
        assert not node2.is_running()

        # wipe any data for node2
        self._cleanup(node2)
        # Now start it again, it should be allowed to join
        mark = node2.mark_log()
        node2.start()
        node2.watch_log_for("JOINING:", from_mark=mark)

    @since('3.0')
    def test_node_cannot_join_as_hibernating_node_without_replace_address(self):
        """
        @jira_ticket CASSANDRA-14559
        Test that a node cannot bootstrap without replace_address if a hibernating node exists with that address
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(2)
        # Setting seed node to first node to make sure replaced node is not in own seed list
        cluster.set_configuration_options({
            'seed_provider': [{'class_name': 'org.apache.cassandra.locator.SimpleSeedProvider',
                               'parameters': [{'seeds': '127.0.0.1'}]
                               }]
        })

        cluster.start()

        node1 = cluster.nodelist()[0]
        node2 = cluster.nodelist()[1]

        replacement_address = node2.address()
        node2.stop()

        jvm_option = 'replace_address'

        logger.debug("Starting replacement node {} with jvm_option '{}={}'".format(replacement_address, jvm_option,
                                                                                   replacement_address))
        replacement_node = Node('replacement', cluster=self.cluster, auto_bootstrap=True,
                                thrift_interface=None, storage_interface=(replacement_address, 7000),
                                jmx_port='7400', remote_debug_port='0', initial_token=None,
                                binary_interface=(replacement_address, 9042))
        cluster.add(replacement_node, False)

        extra_jvm_args = []
        extra_jvm_args.extend(["-Dcassandra.{}={}".format(jvm_option, replacement_address),
                               "-Dcassandra.ring_delay_ms=10000",
                               "-Dcassandra.broadcast_interval_ms=10000"])

        wait_other_notice = False
        wait_for_binary_proto = False

        # Killing node earlier in bootstrap to prevent node making it to 'normal' status.
        t = KillOnReadyToBootstrap(replacement_node)

        t.start()

        replacement_node.start(jvm_args=extra_jvm_args,
                               wait_for_binary_proto=wait_for_binary_proto, wait_other_notice=wait_other_notice)

        t.join()

        logger.debug("Asserting that original replacement node is not running")
        assert not replacement_node.is_running()

        # Assert node is actually in hibernate for test to be accurate.
        logger.debug("Asserting that node is actually in hibernate status for test accuracy")
        assert 'hibernate' in node1.nodetool("gossipinfo").stdout

        extra_jvm_args = []
        extra_jvm_args.extend(["-Dcassandra.ring_delay_ms=10000",
                               "-Dcassandra.broadcast_interval_ms=10000"])

        logger.debug("Starting blind replacement node {}".format(replacement_address))
        blind_replacement_node = Node('blind_replacement', cluster=self.cluster, auto_bootstrap=True,
                                      thrift_interface=None, storage_interface=(replacement_address, 7000),
                                      jmx_port='7400', remote_debug_port='0', initial_token=None,
                                      binary_interface=(replacement_address, 9042))
        cluster.add(blind_replacement_node, False)
        wait_other_notice = False
        wait_for_binary_proto = False

        blind_replacement_node.start(wait_for_binary_proto=wait_for_binary_proto, wait_other_notice=wait_other_notice)

        # Asserting that the new node has correct log entry
        self.assert_log_had_msg(blind_replacement_node, "A node with the same IP in hibernate status was detected", timeout=60)
        # Waiting two seconds to give node a chance to stop in case above assertion is True.
        # When this happens cassandra may not shut down fast enough and the below assertion fails.
        time.sleep(15)
        # Asserting that then new node is not running.
        # This tests the actual expected state as opposed to just checking for the existance of the above error message.
        assert not blind_replacement_node.is_running()


    @since('2.1.1')
    def test_simultaneous_bootstrap(self):
        """
        Attempt to bootstrap two nodes at once, to assert the second bootstrapped node fails, and does not interfere.

        Start a one node cluster and run a stress write workload.
        Start up a second node, and wait for the first node to detect it has joined the cluster.
        While the second node is bootstrapping, start a third node. This should fail.

        @jira_ticket CASSANDRA-7069
        @jira_ticket CASSANDRA-9484
        """

        bootstrap_error = "Other bootstrapping/leaving/moving nodes detected," \
                          " cannot bootstrap while cassandra.consistent.rangemovement is true"

        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(1)
        cluster.start()

        node1, = cluster.nodelist()

        node1.stress(['write', 'n=500K', 'no-warmup', '-schema', 'replication(factor=1)',
                      '-rate', 'threads=10'])

        node2 = new_node(cluster)
        node2.start()

        for _ in range(30):  # wait until node2 shows up
            ntout = node1.nodetool('status').stdout
            if re.search(r'UJ\s+' + node2.ip_addr, ntout):
                break
            time.sleep(0.1)

        node3 = new_node(cluster, remote_debug_port='2003')
        try:
            node3.start(wait_other_notice=False, verbose=False)
        except NodeError:
            pass  # node doesn't start as expected

        time.sleep(.5)
        node2.watch_log_for("Starting listening for CQL clients")

        node3.watch_log_for(bootstrap_error)

        session = self.patient_exclusive_cql_connection(node2)

        # Repeat the select count(*) query, to help catch
        # bugs like 9484, where count(*) fails at higher
        # data loads.
        for _ in range(5):
            assert_one(session, "SELECT count(*) from keyspace1.standard1", [500000], cl=ConsistencyLevel.ONE)

    def test_cleanup(self):
        """
        @jira_ticket CASSANDRA-11179
        Make sure we remove processed files during cleanup
        """
        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.set_configuration_options(values={'concurrent_compactors': 4})
        cluster.populate(1)
        cluster.start()
        node1, = cluster.nodelist()
        for x in range(0, 5):
            node1.stress(['write', 'n=100k', 'no-warmup', '-schema', 'compaction(strategy=SizeTieredCompactionStrategy,enabled=false)', 'replication(factor=1)', '-rate', 'threads=10'])
            node1.flush()
        node2 = new_node(cluster)
        node2.start(wait_for_binary_proto=True)
        event = threading.Event()
        failed = threading.Event()
        jobs = 1
        thread = threading.Thread(target=self._monitor_datadir, args=(node1, event, len(node1.get_sstables("keyspace1", "standard1")), jobs, failed))
        thread.setDaemon(True)
        thread.start()
        node1.nodetool("cleanup -j {} keyspace1 standard1".format(jobs))
        event.set()
        thread.join()
        assert not failed.is_set()

    def _monitor_datadir(self, node, event, basecount, jobs, failed):
        while True:
            sstables = [s for s in node.get_sstables("keyspace1", "standard1") if "tmplink" not in s]
            if len(sstables) > basecount + jobs:
                logger.error("---")
                for sstable in sstables:
                    logger.error(sstable)
                logger.error("Current count is {}, basecount was {}".format(len(sstables), basecount))
                failed.set()
                return
            if event.is_set():
                return
            time.sleep(.1)

    def _cleanup(self, node):
        commitlog_dir = os.path.join(node.get_path(), 'commitlogs')
        for data_dir in node.data_directories():
            logger.debug("Deleting {}".format(data_dir))
            shutil.rmtree(data_dir)
        shutil.rmtree(commitlog_dir)

    @since('2.2')
    @pytest.mark.ported_to_in_jvm # see org.apache.cassandra.distributed.test.BootstrapBinaryDisabledTest
    def test_bootstrap_binary_disabled(self):
        """
        Test binary while bootstrapping and streaming fails.

        This test was ported to jvm-dtest org.apache.cassandra.distributed.test.BootstrapBinaryDisabledTest,
        as of this writing there are a few limitations with jvm-dtest which requries this test to
        stay, namely vnode support (ci also tests under different configs).  Once jvm-dtest supports
        vnodes, this test can go away in favor of that class.

        @jira_ticket CASSANDRA-14526, CASSANDRA-14525, CASSANDRA-16127
        """
        config = {'authenticator': 'org.apache.cassandra.auth.PasswordAuthenticator',
                  'authorizer': 'org.apache.cassandra.auth.CassandraAuthorizer',
                  'role_manager': 'org.apache.cassandra.auth.CassandraRoleManager',
                  'permissions_validity_in_ms': 0,
                  'roles_validity_in_ms': 0}

        cluster = self.cluster
        cluster.set_environment_variable('CASSANDRA_TOKEN_PREGENERATION_DISABLED', 'True')
        cluster.populate(1)

        node1 = cluster.nodes['node1']
        # set up byteman
        node1.byteman_port = '8100'
        node1.import_config_files()

        cluster.start()
        # kill stream to node2 in the middle of streaming to let it fail
        if cluster.version() < '4.0':
            node1.byteman_submit([self.byteman_submit_path_pre_4_0])
        else:
            node1.byteman_submit([self.byteman_submit_path_4_0])
        node1.stress(['write', 'n=1K', 'no-warmup', 'cl=ONE', '-schema', 'replication(factor=3)', '-rate', 'threads=50', '-mode', 'native', 'cql3', 'user=cassandra', 'password=cassandra'])
        cluster.flush()

        # start bootstrapping node2 and wait for streaming
        node2 = new_node(cluster)
        node2.set_configuration_options(values=config)
        node2.byteman_port = '8101' # set for when we add node3
        node2.import_config_files()
        node2.start(jvm_args=["-Dcassandra.ring_delay_ms=5000"])
        self.assert_log_had_msg(node2, 'Some data streaming failed')

        try:
            node2.nodetool('join')
            pytest.fail('nodetool should have errored and failed to join ring')
        except ToolError as t:
            assert "Cannot join the ring until bootstrap completes" in t.stdout

        node2.nodetool('bootstrap resume')
        node2.wait_for_binary_interface()
        assert_bootstrap_state(self, node2, 'COMPLETED', user='cassandra', password='cassandra')

        # Test write survey behaviour
        node3 = new_node(cluster)
        node3.set_configuration_options(values=config)

        # kill stream to node3 in the middle of streaming to let it fail
        if cluster.version() < '4.0':
            node1.byteman_submit([self.byteman_submit_path_pre_4_0])
            node2.byteman_submit([self.byteman_submit_path_pre_4_0])
        else:
            node1.byteman_submit([self.byteman_submit_path_4_0])
            node2.byteman_submit([self.byteman_submit_path_4_0])
        node3.start(jvm_args=["-Dcassandra.write_survey=true", "-Dcassandra.ring_delay_ms=5000"])
        self.assert_log_had_msg(node3, 'Some data streaming failed')
        self.assert_log_had_msg(node3, "Not starting client transports in write_survey mode as it's bootstrapping or auth is enabled")

        try:
            node3.nodetool('join')
            pytest.fail('nodetool should have errored and failed to join ring')
        except ToolError as t:
            assert "Cannot join the ring until bootstrap completes" in t.stdout

        node3.nodetool('bootstrap resume')
        self.assert_log_had_msg(node3, "Not starting client transports in write_survey mode as it's bootstrapping or auth is enabled")

        # Should succeed in joining
        node3.nodetool('join')
        self.assert_log_had_msg(node3, "Leaving write survey mode and joining ring at operator request")
        assert_bootstrap_state(self, node3, 'COMPLETED', user='cassandra', password='cassandra')
        node3.wait_for_binary_interface()