mirror of
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130 lines
5.2 KiB
Python
130 lines
5.2 KiB
Python
#!/usr/bin/env python
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###############################################################################
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# IBM(c) 2018 EPL license http://www.eclipse.org/legal/epl-v10.html
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###############################################################################
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# -*- coding: utf-8 -*-
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#
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from gevent.subprocess import Popen, PIPE
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import requests
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import urllib3
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urllib3.disable_warnings()
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import exceptions as xcat_exception
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class RestSession(object):
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def __init__(self):
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self.session = requests.Session()
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self.cookies = None
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def request(self, method, url, headers, data=None, timeout=30):
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try:
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response = self.session.request(method, url,
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data=data,
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headers=headers,
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verify=False,
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timeout=timeout)
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except requests.exceptions.ConnectionError as e:
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# Extract real reason for the exception and host/port from ConnectionError message
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# Sometimes e.message is a list, sometimes is a string. Look for different patterns
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# to extract the data needed.
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causing_error = "n/a"
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host_and_port = "n/a"
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if "]" in e.message[0]:
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causing_error_part1 = e.message[0].split("]")[1]
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causing_error = causing_error_part1.split("'")[0]
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causing_error = causing_error.strip()
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host_and_port = self.extract_server_and_port(e.message[0], "STRING")
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if "Connection aborted." in e.message[0]:
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causing_error = "Connection reset by peer"
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host_and_port = self.extract_server_and_port(url, "URL")
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if "connect timeout=" in e.message[0]:
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causing_error = "timeout"
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host_and_port = self.extract_server_and_port(e.message[0], "STRING")
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message = 'Failed to connect to server.'
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# message = '\n\n--> {0} \n\n'.format(e.message[0])
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raise xcat_exception.SelfServerException(message, '({0})'.format(causing_error), host_and_port)
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except requests.exceptions.Timeout as e:
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causing_error = "timeout"
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host_and_port = self.extract_server_and_port(e.message[0], "STRING")
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message = 'Timeout to connect to server'
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raise xcat_exception.SelfServerException(message, '({0})'.format(causing_error), host_and_port)
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if not self.cookies:
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self.cookies = requests.utils.dict_from_cookiejar(self.session.cookies)
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return response
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def extract_server_and_port(self, message_string, format="STRING"):
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# Extract hostip and port number from ConnectionError message
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# If format="STRING" look for host='IP' and port=xxxx pattern
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# If format="URL" look for https://IP/login pattern
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if format == "STRING":
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start = "host='"
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end = "',"
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host_ip = message_string[message_string.find(start)+len(start):message_string.find(end)]
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start = "port="
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end = "):"
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port = message_string[message_string.find(start)+len(start):message_string.find(end)]
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host_and_port = host_ip + ":" + port
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elif format == "URL":
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start = "https://"
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end = "/login"
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host_ip = message_string[message_string.find(start)+len(start):message_string.find(end)]
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host_and_port = host_ip
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else:
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host_and_port = "n/a"
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return host_and_port
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def request_download(self, method, url, headers, file_path, using_curl=True):
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if using_curl:
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response = self._download_by_curl(method, url, headers, file_path)
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else:
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response = self.session.request('GET', url, headers=headers)
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file_handle = open(file_path, "wb")
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for chunk in response.iter_content(chunk_size=1024):
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if chunk:
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file_handle.write(chunk)
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return response
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def _download_by_curl(self, method, url, headers, file_path):
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header_str = ' '.join([ "%s: %s" % (k, v) for k,v in headers.items() ])
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request_cmd = 'curl -J -k -b sid=%s -H "%s" -X %s -o %s %s -s' % \
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(self.cookies['sid'], header_str, method, file_path, url)
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sub = Popen(request_cmd, stdout=PIPE, shell=True)
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response, err = sub.communicate()
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return response
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def request_upload(self, method, url, headers, files, using_curl=True):
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if using_curl:
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return self._upload_by_curl(method, url, headers, files)
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def _upload_by_curl(self, method, url, headers, files):
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header_str = ' '.join([ "%s: %s" % (k, v) for k,v in headers.items() ])
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request_cmd = 'curl -k -b sid=%s -H "%s" -X %s -T %s %s -s' % \
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(self.cookies['sid'], header_str, method, files, url)
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sub = Popen(request_cmd, stdout=PIPE, shell=True)
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response, err = sub.communicate()
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if not response:
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error = 'Did not receive response from server after ' \
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'running command \'%s\'' % request_cmd
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raise SelfServerException(error)
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return response
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