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community.general/plugins/modules/storage/netapp/netapp_e_lun_mapping.py

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2020-03-09 10:11:07 +01:00
#!/usr/bin/python
# (c) 2016, NetApp, Inc
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'community'}
DOCUMENTATION = '''
---
module: netapp_e_lun_mapping
author:
- Kevin Hulquest (@hulquest)
- Nathan Swartz (@ndswartz)
short_description: NetApp E-Series create, delete, or modify lun mappings
description:
- Create, delete, or modify mappings between a volume and a targeted host/host+ group.
extends_documentation_fragment:
- netapp.ontap.netapp.eseries
options:
state:
description:
- Present will ensure the mapping exists, absent will remove the mapping.
required: True
choices: ["present", "absent"]
target:
description:
- The name of host or hostgroup you wish to assign to the mapping
- If omitted, the default hostgroup is used.
- If the supplied I(volume_name) is associated with a different target, it will be updated to what is supplied here.
required: False
volume_name:
description:
- The name of the volume you wish to include in the mapping.
required: True
aliases:
- volume
lun:
description:
- The LUN value you wish to give the mapping.
- If the supplied I(volume_name) is associated with a different LUN, it will be updated to what is supplied here.
- LUN value will be determine by the storage-system when not specified.
required: no
target_type:
description:
- This option specifies the whether the target should be a host or a group of hosts
- Only necessary when the target name is used for both a host and a group of hosts
choices:
- host
- group
required: no
'''
EXAMPLES = '''
---
- name: Map volume1 to the host target host1
netapp_e_lun_mapping:
ssid: 1
api_url: "{{ netapp_api_url }}"
api_username: "{{ netapp_api_username }}"
api_password: "{{ netapp_api_password }}"
validate_certs: no
state: present
target: host1
volume: volume1
- name: Delete the lun mapping between volume1 and host1
netapp_e_lun_mapping:
ssid: 1
api_url: "{{ netapp_api_url }}"
api_username: "{{ netapp_api_username }}"
api_password: "{{ netapp_api_password }}"
validate_certs: yes
state: absent
target: host1
volume: volume1
'''
RETURN = '''
msg:
description: success of the module
returned: always
type: str
sample: Lun mapping is complete
'''
import json
import logging
from pprint import pformat
from ansible.module_utils.basic import AnsibleModule
from ansible_collections.netapp.ontap.plugins.module_utils.netapp import request, eseries_host_argument_spec
from ansible.module_utils._text import to_native
HEADERS = {
"Content-Type": "application/json",
"Accept": "application/json"
}
class LunMapping(object):
def __init__(self):
argument_spec = eseries_host_argument_spec()
argument_spec.update(dict(
state=dict(required=True, choices=["present", "absent"]),
target=dict(required=False, default=None),
volume_name=dict(required=True, aliases=["volume"]),
lun=dict(type="int", required=False),
target_type=dict(required=False, choices=["host", "group"])))
self.module = AnsibleModule(argument_spec=argument_spec, supports_check_mode=True)
args = self.module.params
self.state = args["state"] in ["present"]
self.target = args["target"]
self.volume = args["volume_name"]
self.lun = args["lun"]
self.target_type = args["target_type"]
self.ssid = args["ssid"]
self.url = args["api_url"]
self.check_mode = self.module.check_mode
self.creds = dict(url_username=args["api_username"],
url_password=args["api_password"],
validate_certs=args["validate_certs"])
self.mapping_info = None
if not self.url.endswith('/'):
self.url += '/'
def update_mapping_info(self):
"""Collect the current state of the storage array."""
response = None
try:
rc, response = request(self.url + "storage-systems/%s/graph" % self.ssid,
method="GET", headers=HEADERS, **self.creds)
except Exception as error:
self.module.fail_json(
msg="Failed to retrieve storage array graph. Id [%s]. Error [%s]" % (self.ssid, to_native(error)))
# Create dictionary containing host/cluster references mapped to their names
target_reference = {}
target_name = {}
target_type = {}
if self.target_type is None or self.target_type == "host":
for host in response["storagePoolBundle"]["host"]:
target_reference.update({host["hostRef"]: host["name"]})
target_name.update({host["name"]: host["hostRef"]})
target_type.update({host["name"]: "host"})
if self.target_type is None or self.target_type == "group":
for cluster in response["storagePoolBundle"]["cluster"]:
# Verify there is no ambiguity between target's type (ie host and group has the same name)
if self.target and self.target_type is None and cluster["name"] == self.target and \
self.target in target_name.keys():
self.module.fail_json(msg="Ambiguous target type: target name is used for both host and group"
" targets! Id [%s]" % self.ssid)
target_reference.update({cluster["clusterRef"]: cluster["name"]})
target_name.update({cluster["name"]: cluster["clusterRef"]})
target_type.update({cluster["name"]: "group"})
volume_reference = {}
volume_name = {}
lun_name = {}
for volume in response["volume"]:
volume_reference.update({volume["volumeRef"]: volume["name"]})
volume_name.update({volume["name"]: volume["volumeRef"]})
if volume["listOfMappings"]:
lun_name.update({volume["name"]: volume["listOfMappings"][0]["lun"]})
for volume in response["highLevelVolBundle"]["thinVolume"]:
volume_reference.update({volume["volumeRef"]: volume["name"]})
volume_name.update({volume["name"]: volume["volumeRef"]})
if volume["listOfMappings"]:
lun_name.update({volume["name"]: volume["listOfMappings"][0]["lun"]})
# Build current mapping object
self.mapping_info = dict(lun_mapping=[dict(volume_reference=mapping["volumeRef"],
map_reference=mapping["mapRef"],
lun_mapping_reference=mapping["lunMappingRef"],
lun=mapping["lun"]
) for mapping in response["storagePoolBundle"]["lunMapping"]],
volume_by_reference=volume_reference,
volume_by_name=volume_name,
lun_by_name=lun_name,
target_by_reference=target_reference,
target_by_name=target_name,
target_type_by_name=target_type)
def get_lun_mapping(self):
"""Find the matching lun mapping reference.
Returns: tuple(bool, int, int): contains volume match, volume mapping reference and mapping lun
"""
target_match = False
reference = None
lun = None
self.update_mapping_info()
# Verify that when a lun is specified that it does not match an existing lun value unless it is associated with
# the specified volume (ie for an update)
if self.lun and any((self.lun == lun_mapping["lun"] and
self.target == self.mapping_info["target_by_reference"][lun_mapping["map_reference"]] and
self.volume != self.mapping_info["volume_by_reference"][lun_mapping["volume_reference"]]
) for lun_mapping in self.mapping_info["lun_mapping"]):
self.module.fail_json(msg="Option lun value is already in use for target! Array Id [%s]." % self.ssid)
# Verify that when target_type is specified then it matches the target's actually type
if self.target and self.target_type and self.target in self.mapping_info["target_type_by_name"].keys() and \
self.mapping_info["target_type_by_name"][self.target] != self.target_type:
self.module.fail_json(
msg="Option target does not match the specified target_type! Id [%s]." % self.ssid)
# Verify volume and target exist if needed for expected state.
if self.state:
if self.volume not in self.mapping_info["volume_by_name"].keys():
self.module.fail_json(msg="Volume does not exist. Id [%s]." % self.ssid)
if self.target and self.target not in self.mapping_info["target_by_name"].keys():
self.module.fail_json(msg="Target does not exist. Id [%s'." % self.ssid)
for lun_mapping in self.mapping_info["lun_mapping"]:
# Find matching volume reference
if lun_mapping["volume_reference"] == self.mapping_info["volume_by_name"][self.volume]:
reference = lun_mapping["lun_mapping_reference"]
lun = lun_mapping["lun"]
# Determine if lun mapping is attached to target with the
if (lun_mapping["map_reference"] in self.mapping_info["target_by_reference"].keys() and
self.mapping_info["target_by_reference"][lun_mapping["map_reference"]] == self.target and
(self.lun is None or lun == self.lun)):
target_match = True
return target_match, reference, lun
def update(self):
"""Execute the changes the require changes on the storage array."""
target_match, lun_reference, lun = self.get_lun_mapping()
update = (self.state and not target_match) or (not self.state and target_match)
if update and not self.check_mode:
try:
if self.state:
body = dict()
target = None if not self.target else self.mapping_info["target_by_name"][self.target]
if target:
body.update(dict(targetId=target))
if self.lun is not None:
body.update(dict(lun=self.lun))
if lun_reference:
rc, response = request(self.url + "storage-systems/%s/volume-mappings/%s/move"
% (self.ssid, lun_reference), method="POST", data=json.dumps(body),
headers=HEADERS, **self.creds)
else:
body.update(dict(mappableObjectId=self.mapping_info["volume_by_name"][self.volume]))
rc, response = request(self.url + "storage-systems/%s/volume-mappings" % self.ssid,
method="POST", data=json.dumps(body), headers=HEADERS, **self.creds)
else: # Remove existing lun mapping for volume and target
rc, response = request(self.url + "storage-systems/%s/volume-mappings/%s"
% (self.ssid, lun_reference),
method="DELETE", headers=HEADERS, **self.creds)
except Exception as error:
self.module.fail_json(
msg="Failed to update storage array lun mapping. Id [%s]. Error [%s]"
% (self.ssid, to_native(error)))
self.module.exit_json(msg="Lun mapping is complete.", changed=update)
def main():
lun_mapping = LunMapping()
lun_mapping.update()
if __name__ == '__main__':
main()