def test_ha_client_socket_timeout(self):
e = socket.timeout
mocked_client_cat = Mock(side_effect=e)
ha_client = HAClient([Namenode("foo"), Namenode("bar")])
ha_client.cat = HAClient._ha_gen_method(mocked_client_cat)
cat_result_gen = ha_client.cat(ha_client, ['foobar'])
self.assertRaises(OutOfNNException, all, cat_result_gen)
def test_ha_client_standby_errror(self):
e = RequestError("org.apache.hadoop.ipc.StandbyException foo bar")
mocked_client_cat = Mock(side_effect=e)
ha_client = HAClient([Namenode("foo"), Namenode("bar")])
ha_client.cat = HAClient._ha_gen_method(mocked_client_cat)
cat_result_gen = ha_client.cat(ha_client, ['foobar'])
self.assertRaises(OutOfNNException, all, cat_result_gen)
def _read_config_snakebiterc(self,
path=os.path.join(os.path.expanduser('~'),
'.snakebiterc')):
old_version_info = "You're are using snakebite %s with Trash support together with old snakebiterc, please update/remove your %s file. By default Trash is %s." % (
path, version(),
'disabled' if not self.configs['use_trash'] else 'enabled')
with open(path) as config_file:
configs = json.load(config_file)
if isinstance(configs, list):
# Version 1: List of namenodes
# config is a list of namenode(s) - possibly HA
for config in configs:
nn = Namenode(
config['namenode'],
self.__use_cl_port_first(
config.get('port', Namenode.DEFAULT_PORT)),
config.get('version', Namenode.DEFAULT_VERSION))
self.namenodes.append(nn)
if self.__usetrash_unset():
# commandline setting has higher priority
print_info(old_version_info)
# There's no info about Trash in version 1, use default policy:
self.args.usetrash = self.configs['use_trash']
elif isinstance(configs, dict):
# Version 2: {}
# Can be either new configuration or just one namenode
# which was the very first configuration syntax
if 'config_version' in configs:
# Config version => 2
for nn_config in configs['namenodes']:
nn = Namenode(
nn_config['host'],
self.__use_cl_port_first(
nn_config.get('port', Namenode.DEFAULT_PORT)),
nn_config.get('version', Namenode.DEFAULT_VERSION))
self.namenodes.append(nn)
if self.__usetrash_unset():
# commandline setting has higher priority
self.args.usetrash = configs.get("use_trash",
self.configs['use_trash'])
self.user = configs.get("user")
else:
# config is a single namenode - no HA
self.namenodes.append(
Namenode(
configs['namenode'],
self.__use_cl_port_first(
configs.get('port', Namenode.DEFAULT_PORT)),
configs.get('version', Namenode.DEFAULT_VERSION)))
if self.__usetrash_unset():
# commandline setting has higher priority
print_info(old_version_info)
self.args.usetrash = self.configs['use_trash']
else:
print_error_exit(
"Config retrieved from %s is corrupted! Remove it!" % path)
def test_ha_client_ehostunreach_socket_error(self):
e = socket.error
e.errno = errno.EHOSTUNREACH
mocked_client_cat = Mock(side_effect=e)
ha_client = HAClient([Namenode("foo"), Namenode("bar")])
ha_client.cat = HAClient._ha_gen_method(mocked_client_cat)
cat_result_gen = ha_client.cat(ha_client, ['foobar'])
self.assertRaises(OutOfNNException, all, cat_result_gen)
def test_ha_client_econnrefused_socket_error(self):
e = SocketError
e.errno = errno.ECONNREFUSED
mocked_client_cat = Mock(side_effect=e)
ha_client = HAClient([Namenode("foo"), Namenode("bar")])
ha_client.cat = HAClient._ha_gen_method(mocked_client_cat)
cat_result_gen = ha_client.cat(ha_client, ['foobar'])
self.assertRaises(OutOfNNException, all, cat_result_gen)
def test_ha_client_retry(self, rpc_call):
retry_attempts = 3
e = RequestError("org.apache.hadoop.ipc.RetriableException foo bar")
rpc_call.side_effect = e
nns = [Namenode("foo"), Namenode("bar")]
ha_client = HAClient(nns, max_retries=retry_attempts)
cat_result_gen = ha_client.cat(['foobar'])
self.assertRaises(RequestError, all, cat_result_gen)
self.assertEquals(rpc_call.call_count, 1 + retry_attempts)
def test_ha_client_failover_retry_for_exception(self, rpc_call):
failover_attempts = 3
e = RequestError("org.apache.hadoop.ipc.StandbyException foo bar")
rpc_call.side_effect = e
nns = [Namenode("foo", 8020), Namenode("bar", 8020)]
ha_client = HAClient(nns, max_failovers=failover_attempts)
cat_result_gen = ha_client.cat(['foobar'])
self.assertRaises(OutOfNNException, all, cat_result_gen)
self.assertEquals(rpc_call.call_count, 1 + failover_attempts)
def test_ha_client_failover_retry(self, rpc_call):
failover_attempts = 3
e = socket.timeout
e.message = "socket.timeout"
rpc_call.side_effect = e
nns = [Namenode("foo"), Namenode("bar")]
ha_client = HAClient(nns, max_failovers=failover_attempts)
cat_result_gen = ha_client.cat(['foobar'])
self.assertRaises(OutOfNNException, all, cat_result_gen)
self.assertEquals(rpc_call.call_count, 1 + failover_attempts)
def test_ha_client_retry2(self, get_connection):
retry_attempts = 2
e = RequestError("org.apache.hadoop.ipc.RetriableException foo bar")
get_connection.side_effect = e
nns = [Namenode("foo", 8020), Namenode("bar", 8020)]
ha_client = HAClient(nns, max_retries=retry_attempts)
cat_result_gen = ha_client.cat(['foobar'])
self.assertRaises(RequestError, all, cat_result_gen)
calls = [call("foo", 8020), call("foo", 8020), call("foo", 8020)]
get_connection.assert_has_calls(calls)
def test_ha_client_failover_retry_for_exception2(self, get_connection):
failover_attempts = 2
e = RequestError("org.apache.hadoop.ipc.StandbyException foo bar")
get_connection.side_effect = e
nns = [Namenode("foo"), Namenode("bar")]
ha_client = HAClient(nns, max_failovers=failover_attempts)
cat_result_gen = ha_client.cat(['foobar'])
self.assertRaises(OutOfNNException, all, cat_result_gen)
calls = [call("foo", 8020), call("bar", 8020), call("foo", 8020)]
get_connection.assert_has_calls(calls)
def test_ha_client_failover_retry2(self, get_connection):
failover_attempts = 2
e = socket.timeout
e.message = "socket.timeout"
get_connection.side_effect = e
nns = [Namenode("foo", 8020), Namenode("bar", 8020)]
ha_client = HAClient(nns, max_failovers=failover_attempts)
cat_result_gen = ha_client.cat(['foobar'])
self.assertRaises(OutOfNNException, all, cat_result_gen)
calls = [call("foo", 8020), call("bar", 8020), call("foo", 8020)]
get_connection.assert_has_calls(calls)
def get_snakebite_hdfs_client():
"""
获得 snakebite库的HDFS Client
:return: snakebite HDFS Client
"""
n1 = Namenode("hadoop101", 9000)
n2 = Namenode("hadoop102", 9000)
client = HAClient([n1, n2],
effective_user="******",
sock_request_timeout=10000000000)
return client
def _read_config_cl(self):
''' Check if any directory arguments contain hdfs://'''
dirs_to_check = self.__get_all_directories()
hosts, ports = [], []
for path in dirs_to_check:
if path.startswith('hdfs://'):
parse_result = urlparse(path)
hosts.append(parse_result.hostname)
ports.append(parse_result.port)
# remove duplicates and None from (hosts + self.args.namenode)
hosts = list(filter(lambda x: x != None, set(hosts + [self.args.namenode])))
if len(hosts) > 1:
print_error_exit('Conficiting namenode hosts in commandline arguments, hosts: %s' % str(hosts))
ports = list(filter(lambda x: x != None, set(ports + [self.args.port])))
if len(ports) > 1:
print_error_exit('Conflicting namenode ports in commandline arguments, ports: %s' % str(ports))
# Store port from CL in arguments - CL port has the highest priority
if len(ports) == 1:
self.args.port = ports[0]
# do we agree on one namenode?
if len(hosts) == 1 and len(ports) <= 1:
self.args.namenode = hosts[0]
self.args.port = ports[0] if len(ports) == 1 else Namenode.DEFAULT_PORT
self.namenodes.append(Namenode(self.args.namenode, self.args.port))
# we got the info from CL -> check if use_trash is set - if not use default policy:
if self.__usetrash_unset():
self.args.usetrash = self.configs['use_trash']
return True
else:
return False
def test_response_error_no_client_retry(self, rpc_call):
retry_attempts = 3
e = RpcResponseError("Response read error")
rpc_call.side_effect = e
nns = [Namenode("foo")]
ha_client = HAClient(nns, max_retries=retry_attempts)
cat_result_gen = ha_client.rename(['foobar'], 'foo')
self.assertRaises(RpcResponseError, all, cat_result_gen)
self.assertEquals(rpc_call.call_count, 1)
def __create_hdfs_client__():
try:
namenode_conf = os.path.dirname(
os.path.abspath(__file__)) + '/../conf/namenode.conf'
config_dict = config_parse.config_parse(namenode_conf)
if 'namenode' not in config_dict or 'host' not in config_dict['namenode'] or \
'port' not in config_dict['namenode'] or 'second_namenode' not in config_dict or \
'host' not in config_dict['second_namenode'] or 'port' not in config_dict['second_namenode']:
logger.error('namenode config file:[%s] invalid' % namenode_conf)
sys.exit(2)
namenode_host = config_dict['namenode']['host']
namenode_port = int(config_dict['namenode']['port'])
second_namenode_host = config_dict['second_namenode']['host']
second_namenode_port = int(config_dict['second_namenode']['port'])
namenode = Namenode(namenode_host, namenode_port)
second_namenode = Namenode(second_namenode_host, second_namenode_port)
return HAClient([namenode, second_namenode], use_trash=True)
except Exception, e:
logger.error('create hdfs client exception:[%s]' % str(e))
sys.exit(2)
def read_config(self):
self.configs = HDFSConfig.get_external_config()
# Try to retrieve namenode config from within CL arguments
if self._read_config_cl():
return
config_file = os.path.join(os.path.expanduser('~'), '.snakebiterc')
if os.path.exists(config_file):
#if ~/.snakebiterc exists - read config from it
self._read_config_snakebiterc()
elif os.path.exists('/etc/snakebiterc'):
self._read_config_snakebiterc('/etc/snakebiterc')
else:
# if configs from HDFS config files exist and contain something
if self.configs:
for config in self.configs['namenodes']:
nn = Namenode(config['namenode'],
self.__use_cl_port_first(config['port']))
self.namenodes.append(nn)
if self.__usetrash_unset():
self.args.usetrash = self.configs['use_trash']
self.use_sasl = self.configs['use_sasl']
if len(self.namenodes):
return
else:
print(
"No ~/.snakebiterc found, no HADOOP_HOME set and no -n and -p provided"
)
print("Tried to find core-site.xml in:")
for core_conf_path in HDFSConfig.core_try_paths:
print(" - %s" % core_conf_path)
print("Tried to find hdfs-site.xml in:")
for hdfs_conf_path in HDFSConfig.hdfs_try_paths:
print(" - %s" % hdfs_conf_path)
print(
"\nYou can manually create ~/.snakebiterc with the following content:"
)
print('{')
print(' "config_version": 2,')
print(' "use_trash": true,')
print(' "namenodes": [')
print(' {"host": "namenode-ha1", "port": %d, "version": %d},' %
(Namenode.DEFAULT_PORT, Namenode.DEFAULT_VERSION))
print(' {"host": "namenode-ha2", "port": %d, "version": %d}' %
(Namenode.DEFAULT_PORT, Namenode.DEFAULT_VERSION))
print(' ]')
print('}')
sys.exit(1)
def get_client(self, instance):
if 'namenode' in instance:
# backward compatibility for old style configuration of that check
host, port = instance['namenode'], instance.get(
'port', DEFAULT_PORT)
return snakebite.client.Client(host, port)
if type(instance['namenodes']) != list or len(
instance['namenodes']) == 0:
raise ValueError(
'"namenodes parameter should be a list of dictionaries.')
for namenode in instance['namenodes']:
if type(namenode) != dict:
raise ValueError(
'"namenodes parameter should be a list of dictionaries.')
if "url" not in namenode:
raise ValueError(
'Each namenode should specify a "url" parameter.')
if len(instance['namenodes']) == 1:
host, port = instance['namenodes'][0]['url'], instance[
'namenodes'][0].get('port', DEFAULT_PORT)
return snakebite.client.Client(host, port)
else:
# We are running on HA mode
if Namenode is None:
# We are running snakebite 1.x which is not compatible with the HA mode
# Let's display a warning and use regular mode
self.warning(
"HA Mode is not available with snakebite < 2.2.0"
"Upgrade to the latest version of snakebiteby running: "
"sudo /opt/datadog-agent/embedded/bin/pip install --upgrade snakebite"
)
host, port = instance['namenodes'][0]['url'], instance[
'namenodes'][0].get('port', DEFAULT_PORT)
return snakebite.client.Client(host, port)
else:
self.log.debug("Running in HA Mode")
nodes = []
for namenode in instance['namenodes']:
nodes.append(
Namenode(namenode['url'],
namenode.get('port', DEFAULT_PORT)))
return snakebite.client.HAClient(nodes)
def get_client(self, instance):
if 'namenode' in instance:
host, port = instance['namenode'], instance.get(
'port', DEFAULT_PORT)
return snakebite.client.Client(host, port)
if type(instance['namenodes']) != list or len(
instance['namenodes']) == 0:
raise ValueError(
'"namenodes parameter should be a list of dictionaries.')
for namenode in instance['namenodes']:
if type(namenode) != dict:
raise ValueError(
'"namenodes parameter should be a list of dictionaries.')
if "url" not in namenode:
raise ValueError(
'Each namenode should specify a "url" parameter.')
if len(instance['namenodes']) == 1:
host, port = instance['namenodes'][0]['url'], instance[
'namenodes'][0].get('port', DEFAULT_PORT)
return snakebite.client.Client(host, port)
else:
if Namenode is None:
self.warning(
"HA Mode is not available with snakebite < 2.2.0"
"Upgrade to the latest version of snakebiteby running: "
"sudo /opt/datamonitor-agent/embedded/bin/pip install --upgrade snakebite"
)
host, port = instance['namenodes'][0]['url'], instance[
'namenodes'][0].get('port', DEFAULT_PORT)
return snakebite.client.Client(host, port)
else:
self.log.debug("Running in HA Mode")
nodes = []
for namenode in instance['namenodes']:
nodes.append(
Namenode(namenode['url'],
namenode.get('port', DEFAULT_PORT)))
return snakebite.client.HAClient(nodes)
def __init__(self,
namenode,
path,
use_trash=False,
effective_user=None,
use_sasl=True,
hdfs_namenode_principal='hdfs',
use_datanode_hostname=False):
from snakebite.client import HAClient
from snakebite.namenode import Namenode
self.path = path
namenodes = [Namenode(namenode)]
self._client = HAClient(
namenodes,
use_trash=use_trash,
effective_user=effective_user,
use_sasl=use_sasl,
hdfs_namenode_principal=hdfs_namenode_principal,
use_datanode_hostname=use_datanode_hostname)
import urllib, time
import urllib2
import string, datetime
import xml.sax
import xml.sax.handler
import sys, time, os, datetime
from subprocess import *
import threading
import socket
import requests
import json
from snakebite.client import HAClient
from snakebite.namenode import Namenode
n1 = Namenode("namenode-1", 8022)
n2 = Namenode("namenode-2", 8022)
ENDPOINT = "hive-db-monitor" # Unique identifier
STEP = 600
FALCON_AGENT_URL = "http://192.168.17.13:1988/v1/push"
this_timestamp = int(time.time())
d = datetime.datetime.now()
item = {}
item['endpoint'] = 'hive-db-monitor-folder'
item['metric'] = ''
item['timestamp'] = this_timestamp
item['step'] = STEP
item['counterType'] = 'GAUGE'
item['tags'] = ''
def ha_test():
n1 = Namenode("192.168.24.137", 9990)
n2 = Namenode("192.168.24.138", 9990)
client = HAClient([n1, n2])
for x in client.ls(['/']):
print x
