mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-02 06:30:55 +00:00
200 lines
8.1 KiB
Python
200 lines
8.1 KiB
Python
# -*- coding: utf-8 -*-
|
|
import io
|
|
import gzip
|
|
import subprocess
|
|
import time
|
|
from tempfile import NamedTemporaryFile
|
|
import requests
|
|
import requests_kerberos as reqkerb
|
|
import socket
|
|
import tempfile
|
|
import logging
|
|
import os
|
|
|
|
g_dns_hook = None
|
|
|
|
def custom_getaddrinfo(*args):
|
|
# print("from custom_getaddrinfo g_dns_hook is None ", g_dns_hook is None)
|
|
ret = g_dns_hook.custom_getaddrinfo(*args)
|
|
# print("g_dns_hook.custom_getaddrinfo result", ret)
|
|
return ret
|
|
|
|
|
|
class mk_krb_conf(object):
|
|
def __init__(self, krb_conf, kdc_ip):
|
|
self.krb_conf = krb_conf
|
|
self.kdc_ip = kdc_ip
|
|
self.amended_krb_conf = None
|
|
def __enter__(self):
|
|
with open(self.krb_conf) as f:
|
|
content = f.read()
|
|
amended_content = content.replace('hdfskerberos', self.kdc_ip)
|
|
self.amended_krb_conf = tempfile.NamedTemporaryFile(delete=False, mode="w+")
|
|
self.amended_krb_conf.write(amended_content)
|
|
self.amended_krb_conf.close()
|
|
return self.amended_krb_conf.name
|
|
def __exit__(self, type, value, traceback):
|
|
if self.amended_krb_conf is not None:
|
|
self.amended_krb_conf.close()
|
|
|
|
# tweak dns resolution to connect to localhost where api_host is in URL
|
|
class dns_hook(object):
|
|
def __init__(self, hdfs_api):
|
|
# print("dns_hook.init ", hdfs_api.kerberized, hdfs_api.host, hdfs_api.data_port, hdfs_api.proxy_port)
|
|
self.hdfs_api = hdfs_api
|
|
def __enter__(self):
|
|
global g_dns_hook
|
|
g_dns_hook = self
|
|
# print("g_dns_hook is None ", g_dns_hook is None)
|
|
self.original_getaddrinfo = socket.getaddrinfo
|
|
socket.getaddrinfo = custom_getaddrinfo
|
|
return self
|
|
def __exit__(self, type, value, traceback):
|
|
global g_dns_hook
|
|
g_dns_hook = None
|
|
socket.getaddrinfo = self.original_getaddrinfo
|
|
def custom_getaddrinfo(self, *args):
|
|
(hostname, port) = args[:2]
|
|
# print("top of custom_getaddrinfo", hostname, port)
|
|
|
|
if hostname == self.hdfs_api.host and (port == self.hdfs_api.data_port or port == self.hdfs_api.proxy_port):
|
|
# print("dns_hook substitute")
|
|
return [(socket.AF_INET, 1, 6, '', ("127.0.0.1", port))]
|
|
else:
|
|
return self.original_getaddrinfo(*args)
|
|
|
|
class HDFSApi(object):
|
|
def __init__(self, user, timeout=100, kerberized=False, principal=None,
|
|
keytab=None, krb_conf=None,
|
|
host = "localhost", protocol = "http",
|
|
proxy_port = 50070, data_port = 50075, hdfs_ip = None, kdc_ip = None):
|
|
self.host = host
|
|
self.protocol = protocol
|
|
self.proxy_port = proxy_port
|
|
self.data_port = data_port
|
|
self.user = user
|
|
self.kerberized = kerberized
|
|
self.principal = principal
|
|
self.keytab = keytab
|
|
self.timeout = timeout
|
|
self.hdfs_ip = hdfs_ip
|
|
self.kdc_ip = kdc_ip
|
|
self.krb_conf = krb_conf
|
|
|
|
# logging.basicConfig(level=logging.DEBUG)
|
|
# logging.getLogger().setLevel(logging.DEBUG)
|
|
# requests_log = logging.getLogger("requests.packages.urllib3")
|
|
# requests_log.setLevel(logging.DEBUG)
|
|
# requests_log.propagate = True
|
|
|
|
if kerberized:
|
|
self._run_kinit()
|
|
self.kerberos_auth = reqkerb.HTTPKerberosAuth(mutual_authentication=reqkerb.DISABLED, hostname_override=self.host, principal=self.principal)
|
|
#principal=self.principal,
|
|
#hostname_override=self.host, principal=self.principal)
|
|
# , mutual_authentication=reqkerb.REQUIRED, force_preemptive=True)
|
|
else:
|
|
self.kerberos_auth = None
|
|
|
|
def _run_kinit(self):
|
|
if self.principal is None or self.keytab is None:
|
|
raise Exception("kerberos principal and keytab are required")
|
|
|
|
with mk_krb_conf(self.krb_conf, self.kdc_ip) as instantiated_krb_conf:
|
|
# print("instantiated_krb_conf ", instantiated_krb_conf)
|
|
|
|
os.environ["KRB5_CONFIG"] = instantiated_krb_conf
|
|
|
|
cmd = "(kinit -R -t {keytab} -k {principal} || (sleep 5 && kinit -R -t {keytab} -k {principal})) ; klist".format(instantiated_krb_conf=instantiated_krb_conf, keytab=self.keytab, principal=self.principal)
|
|
|
|
# print(cmd)
|
|
|
|
start = time.time()
|
|
|
|
while time.time() - start < self.timeout:
|
|
try:
|
|
subprocess.call(cmd, shell=True)
|
|
print("KDC started, kinit successfully run")
|
|
return
|
|
except Exception as ex:
|
|
print("Can't run kinit ... waiting {}".format(str(ex)))
|
|
time.sleep(1)
|
|
|
|
raise Exception("Kinit running failure")
|
|
|
|
def read_data(self, path, universal_newlines=True):
|
|
with dns_hook(self):
|
|
response = requests.get("{protocol}://{host}:{port}/webhdfs/v1{path}?op=OPEN".format(protocol=self.protocol, host=self.host, port=self.proxy_port, path=path), headers={'host': 'localhost'}, allow_redirects=False, verify=False, auth=self.kerberos_auth)
|
|
if response.status_code != 307:
|
|
response.raise_for_status()
|
|
# additional_params = '&'.join(response.headers['Location'].split('&')[1:2])
|
|
url = "{location}".format(location=response.headers['Location'])
|
|
# print("redirected to ", url)
|
|
with dns_hook(self):
|
|
response_data = requests.get(url,
|
|
headers={'host': 'localhost'},
|
|
verify=False, auth=self.kerberos_auth)
|
|
if response_data.status_code != 200:
|
|
response_data.raise_for_status()
|
|
if universal_newlines:
|
|
return response_data.text
|
|
else:
|
|
return response_data.content
|
|
|
|
def write_data(self, path, content):
|
|
named_file = NamedTemporaryFile(mode='wb+')
|
|
fpath = named_file.name
|
|
if isinstance(content, str):
|
|
content = content.encode()
|
|
named_file.write(content)
|
|
named_file.flush()
|
|
|
|
|
|
if self.kerberized:
|
|
self._run_kinit()
|
|
self.kerberos_auth = reqkerb.HTTPKerberosAuth(mutual_authentication=reqkerb.DISABLED, hostname_override=self.host, principal=self.principal)
|
|
# print(self.kerberos_auth)
|
|
|
|
with dns_hook(self):
|
|
response = requests.put(
|
|
"{protocol}://{host}:{port}/webhdfs/v1{path}?op=CREATE".format(protocol=self.protocol, host=self.host,
|
|
port=self.proxy_port,
|
|
path=path, user=self.user),
|
|
allow_redirects=False,
|
|
headers={'host': 'localhost'},
|
|
params={'overwrite' : 'true'},
|
|
verify=False, auth=self.kerberos_auth
|
|
)
|
|
if response.status_code != 307:
|
|
# print(response.headers)
|
|
response.raise_for_status()
|
|
|
|
additional_params = '&'.join(
|
|
response.headers['Location'].split('&')[1:2] + ["user.name={}".format(self.user), "overwrite=true"])
|
|
|
|
with dns_hook(self), open(fpath, mode="rb") as fh:
|
|
file_data = fh.read()
|
|
protocol = "http" # self.protocol
|
|
response = requests.put(
|
|
"{location}".format(location=response.headers['Location']),
|
|
data=file_data,
|
|
headers={'content-type':'text/plain', 'host': 'localhost'},
|
|
params={'file': path, 'user.name' : self.user},
|
|
allow_redirects=False, verify=False, auth=self.kerberos_auth
|
|
)
|
|
# print(response)
|
|
if response.status_code != 201:
|
|
response.raise_for_status()
|
|
|
|
|
|
def write_gzip_data(self, path, content):
|
|
if isinstance(content, str):
|
|
content = content.encode()
|
|
out = io.BytesIO()
|
|
with gzip.GzipFile(fileobj=out, mode="wb") as f:
|
|
f.write(content)
|
|
self.write_data(path, out.getvalue())
|
|
|
|
def read_gzip_data(self, path):
|
|
return gzip.GzipFile(fileobj=io.BytesIO(self.read_data(path, universal_newlines=False))).read().decode()
|