Refactor for get_xenapi_facts
This commit contains the following changes: 1. remove it from cmd; as there is no need to expose this as a separate command. Making this as an util which will be invoked by xenapi_bootstrap. 2. rename the general function of get_hostname to be get_remote_hostname and move it to common_functions. 3. change the keywords for the facts items to make it more clear. Change-Id: Ie786b3085c29f9a1faf2c51a1a704ded1010af7b
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# Copyright 2017 Citrix Systems
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Command for getting facts about XenAPI.
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This command will return the facts about XenAPI in a json formatted dict.
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e.g.
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'
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{
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"DOM0_HOST_NAME": u"traya",
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"HIMN_LOCAL_IP": u"169.254.0.2",
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"HIMN_LOCAL_ETH": u"eth3"
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...}
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'
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"""
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import getopt
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import sys
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import os_xenapi.utils.xenapi_facts as xenapi_facts
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USAGE_MSG = "Run the following command to get facts for XenAPI:\n"
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USAGE_MSG += sys.argv[0]
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USAGE_MSG += " [-i|--himn-ip=] <XenServer's HIMN IP>"
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USAGE_MSG += " [-u|--user-name=] <user-name>"
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USAGE_MSG += " [-p|--passwd=] <passwd>\n\n"
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VALID_OPS_SHORT_STR = "i:p:u:"
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VALID_OPS_LONG_LST = ["himn-ip=", "passwd=", "user-name="]
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def exit_with_usage():
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sys.stderr.write(USAGE_MSG)
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sys.exit(1)
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def main(argv):
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try:
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opts, args = getopt.getopt(argv,
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VALID_OPS_SHORT_STR,
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VALID_OPS_LONG_LST)
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except getopt.GetoptError:
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return exit_with_usage()
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if len(opts) != len(VALID_OPS_LONG_LST):
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return exit_with_usage()
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# Get the values from input parameters.
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for opt, arg in opts:
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if opt in ("-i", "--himn-ip"):
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himn_ip = arg
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elif opt in ("-p", "--passwd"):
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passwd = arg
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elif opt in ("-u", "--user-name"):
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user_name = arg
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return xenapi_facts.get_facts(himn_ip, user_name, passwd)
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if __name__ == "__main__":
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if len(sys.argv) < 2:
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exit_with_usage()
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sys.exit(main(sys.argv[1:]))
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@ -1,51 +0,0 @@
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import mock
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from os_xenapi.cmd import get_xenapi_facts
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from os_xenapi.tests import base
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from os_xenapi.utils import xenapi_facts
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class GetXenapiFactsTestCase(base.TestCase):
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@mock.patch.object(xenapi_facts, 'get_facts')
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def test_get_xenapi_facts(self, mock_get):
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argv = ['-i', '169.254.0.1', '-u', 'root', '-p', 'passwd']
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get_xenapi_facts.main(argv)
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mock_get.assert_called_with('169.254.0.1', 'root', 'passwd')
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@mock.patch.object(get_xenapi_facts, 'exit_with_usage')
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@mock.patch.object(xenapi_facts, 'get_facts')
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def test_get_xenapi_facts_wrong_opt(self, mock_get, mock_usage):
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# Verify if it will exit with prompting usage if pass in
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# wrong opts.
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argv = ['-i', '169.254.0.1', '-u', 'root', '-v', 'invalid_opt']
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get_xenapi_facts.main(argv)
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mock_usage.assert_called_with()
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mock_get.assert_not_called()
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@mock.patch.object(get_xenapi_facts, 'exit_with_usage')
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@mock.patch.object(xenapi_facts, 'get_facts')
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def test_get_xenapi_facts_lack_opts(self, mock_get, mock_usage):
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# Verify if it will exit with prompting usage if not giving
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# all required opts.
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argv = ['-i', '169.254.0.1']
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get_xenapi_facts.main(argv)
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mock_usage.assert_called_with()
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mock_get.assert_not_called()
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@ -0,0 +1,29 @@
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import mock
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from os_xenapi.tests import base
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from os_xenapi.utils import common_function
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class CommonUtilFuncTestCase(base.TestCase):
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def test_get_remote_hostname(self):
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mock_client = mock.Mock()
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out = ' \nFake_host_name\n '
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err = ''
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mock_client.ssh.return_value = (out, err)
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hostname = common_function.get_remote_hostname(mock_client)
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self.assertEqual(hostname, 'Fake_host_name')
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mock_client.ssh.assert_called_with('hostname')
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@ -10,40 +10,31 @@
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# License for the specific language governing permissions and limitations
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# under the License.
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import json
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import mock
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import netifaces
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from os_xenapi.tests import base
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from os_xenapi.utils import common_function
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from os_xenapi.utils import himn
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from os_xenapi.utils import xenapi_facts
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class XenapiFactsTestCase(base.TestCase):
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def test_hostname(self):
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mock_client = mock.Mock()
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out = 'fake_hostname\r\n'
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err = ''
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mock_client.ssh.return_value = (out, err)
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hostname = xenapi_facts.get_hostname(mock_client)
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mock_client.ssh.assert_called_with('hostname')
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self.assertEqual(hostname, 'fake_hostname')
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@mock.patch.object(xenapi_facts, 'get_hostname')
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@mock.patch.object(common_function, 'get_remote_hostname')
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@mock.patch.object(himn, 'get_local_himn_eth')
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@mock.patch.object(netifaces, 'ifaddresses')
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def test_get_facts(self, mock_ifaddr, mock_eth, mock_hostname):
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xenapi_facts.sshclient.SSHClient = mock.Mock
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mock_client = mock.Mock()
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mock_client.ip = mock.sentinel.dom0_himn_ip
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mock_eth.return_value = 'eth3'
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mock_ifaddr.return_value = {2: [{'netmask': u'255.255.0.0',
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'addr': u'169.254.0.2'}]}
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mock_hostname.return_value = 'traya'
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facts_json = xenapi_facts.get_facts('169.254.0.1', 'root', 'passwd')
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ret_facts = xenapi_facts.get_xenapi_facts(mock_client)
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expect_facts = {"local_himn_ip": "169.254.0.2",
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"local_himn_eth": "eth3",
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"hostname": "traya"}
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self.assertEqual(json.loads(facts_json), expect_facts)
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expect_facts = {"domu_himn_ip": "169.254.0.2",
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"domu_himn_eth": "eth3",
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"dom0_hostname": "traya"}
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self.assertEqual(ret_facts, expect_facts)
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mock_eth.assert_called_with(mock.sentinel.dom0_himn_ip)
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def get_eth_mac(eth):
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# Get eth's mac address.
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return netifaces.ifaddresses(eth).get(netifaces.AF_LINK)[0]['addr']
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def get_remote_hostname(host_client):
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# Get remote host's hostname via the host_client connected to the host.
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out, _ = host_client.ssh('hostname')
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hostname = out.strip()
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return hostname
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from os_xenapi.utils import sshclient
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def get_hostname(host_client):
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out, _ = host_client.ssh('hostname')
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hostname = out.strip()
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return hostname
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def get_xenapi_facts(dom0_client):
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"""Get XenAPI facts
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This function will get XenAPI relative facts on the compute node:
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dom0_hostname: dom0's hostname.
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domu_himn_eth: domU's network interface which is connected to HIMN
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domu_himn_ip: domU's ip which belong to the subnt reserved for HIMN
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:param dom0_client: the remote access client connected to dom0
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:returns: a dict which contains all facts gathered.
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"""
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def get_facts(dom0_himn_ip, user_name, passwd):
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facts = {}
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dom0_client = sshclient.SSHClient(dom0_himn_ip, user_name, passwd)
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# get dom0's hostname
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facts['dom0_hostname'] = common_function.get_remote_hostname(dom0_client)
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facts['hostname'] = get_hostname(dom0_client)
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# get local HIMN info
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eth = himn.get_local_himn_eth(dom0_himn_ip)
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# get domU's eth and ip which are connected to HIMN.
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eth = himn.get_local_himn_eth(dom0_client.ip)
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ip_addr = common_function.get_eth_ipaddr(eth)
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facts['local_himn_eth'] = eth
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facts['local_himn_ip'] = ip_addr
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facts['domu_himn_eth'] = eth
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facts['domu_himn_ip'] = ip_addr
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return facts
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return json.dumps(facts)
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if __name__ == '__main__':
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dom0_himn_ip, user_name, passwd = sys.argv[1:]
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facts_json = get_facts(dom0_himn_ip, user_name, passwd)
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print('get_facts returns:\n %s' % facts_json)
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# Run in domU which has an interface connected to HIMN
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# argv[1]: dom0's IP address
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# argv[2]: user name
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# argv[3]: user passwd
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ssh_client = sshclient.SSHClient(sys.argv[1], sys.argv[2], sys.argv[3])
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print('Got XenAPI facts as:\n%s' % json.dumps(get_xenapi_facts(ssh_client),
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indent=4, sort_keys=True))
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