Initialize the HNAS driver #767

guankc · 2021-10-25T06:36:19Z

Initialize the HNAS driver

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

Release note:

…e required)

Initialize the HNAS driver

codecov · 2021-10-25T06:38:41Z

Codecov Report

Merging #767 (a1e22ae) into master (320b7fe) will increase coverage by 0.04%.
The diff coverage is 71.47%.

@@            Coverage Diff             @@
##           master     #767      +/-   ##
==========================================
+ Coverage   70.55%   70.60%   +0.04%     
==========================================
  Files         167      170       +3     
  Lines       16626    17235     +609     
  Branches     2387     2492     +105     
==========================================
+ Hits        11730    12168     +438     
- Misses       4192     4341     +149     
- Partials      704      726      +22

Impacted Files	Coverage Δ
delfin/drivers/netapp/dataontap/constants.py	`100.00% <ø> (ø)`
delfin/drivers/utils/ssh_client.py	`16.81% <5.55%> (-2.07%)`	⬇️
delfin/drivers/hitachi/hnas/nas_handler.py	`72.87% <72.87%> (ø)`
delfin/drivers/hitachi/hnas/hds_nas.py	`86.04% <86.04%> (ø)`
delfin/drivers/hitachi/hnas/constants.py	`100.00% <100.00%> (ø)`
delfin/drivers/utils/tools.py	`92.53% <100.00%> (+4.47%)`	⬆️
delfin/drivers/fake_storage/__init__.py	`95.06% <0.00%> (ø)`

ThisIsClark · 2021-11-01T09:44:05Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                header_index = i
+        return table[(header_index + 1):]
+
+    def get_storage(self):


This function is bigger than 50 lines, please split it into multiple functions.
Please check other functions as well.

has modified

ThisIsClark · 2021-11-01T09:52:20Z

delfin/drivers/hitachi/hnas/nas_handler.py

+    def ssh_do_exec(self, command_list):
+        res = ''
+        res = self.ssh_pool.do_exec_command(command_list)
+        while 'Failed to establish SSC connection' in res:


What would happend if device always return 'Failed to establish SSC connection'

The SSH command line of the HNAS must be first accessed to the Linux server of the HNAS and then to the SSC subsystem of Linux. If the SSC subsystem cannot be accessed due to network fluctuation or other reasons, the SSH command fails and the system displays 'Failed to establish SSC connection'. In this case, run the command again to re-establish the connection with the SSC subsystem.

I mean if ssh always return this, it would be a dead loop

We are considering setting a retry count or timeout

Optimize code format specification and unit test specification

JiuyunZhao · 2021-11-05T09:19:42Z

delfin/drivers/hitachi/hnas/hds_nas.py

+        pass
+
+    @staticmethod
+    def get_capabilities(context):


get_capabilities is missing argument filter, and if this driver cannot collect performance data, it's unnecessary to implement these two functions.

has deleted

JiuyunZhao · 2021-11-05T09:23:35Z

delfin/drivers/hitachi/hnas/nas_handler.py

+import time
+
+import six
+


This blank line is redundant.

has deleted

JiuyunZhao · 2021-11-05T09:24:30Z

delfin/drivers/hitachi/hnas/nas_handler.py

+
+from delfin import exception, utils
+from delfin.common import constants
+from delfin.drivers.utils.ssh_client import SSHPool


This import syntax is in a wrong order.

JiuyunZhao · 2021-11-05T09:32:09Z

delfin/drivers/hitachi/hnas/nas_handler.py

+        return int(Tools.get_capacity_size(limit))
+
+    def ssh_do_exec(self, command_list):
+        res = ''


Line46 is redundant.

has deleted

JiuyunZhao · 2021-11-05T09:45:15Z

delfin/drivers/utils/ssh_client.py

+        result = ''
+        try:
+            with self.item() as ssh:
+                if command_list is not None and len(command_list) > 0 \


How about if command_list and ssh: xxx ?

has been modify

JiuyunZhao · 2021-11-05T09:57:57Z

delfin/drivers/utils/ssh_client.py

+                        and ssh is not None:
+                    channel = ssh.invoke_shell()
+                    for command in command_list:
+                        utils.check_ssh_injection(command)


Parameter of function check_ssh_injection is list type, so this line should be utils.check_ssh_injection(command.split()) , and same problem in line254, it should be utils.check_ssh_injection(command_str.split()) , please helpt to fix it in this pr.

JiuyunZhao · 2021-11-05T10:07:10Z

delfin/drivers/utils/ssh_client.py

+                        if not resp:
+                            break
+                        result += resp
+        except paramiko.AuthenticationException as ae:


There are too many duplicate codes in do_exec and do_exec_command, these two functions should be optimized.

JiuyunZhao · 2021-11-05T10:09:09Z

delfin/drivers/utils/ssh_client.py

@@ -278,3 +280,44 @@ def do_exec(self, command_str):
                'is not a recognized command' in result:
            raise exception.StorageBackendException(result)
        return result
+
+    def do_exec_command(self, command_list):


Function name might be named do_exec_shell or do_exec_channel, or other names.

has been modify

JiuyunZhao · 2021-11-05T10:12:12Z

delfin/drivers/hitachi/hnas/nas_handler.py

+    def login(self):
+        try:
+            result = self.ssh_do_exec(['cluster-show -y'])
+            if 'is not a recognized command' in result \


This if syntax may be encountered in every command, so it should be in function self.ssh_pool.do_exec_command .

has been modify

ThisIsClark · 2021-11-08T02:17:50Z

delfin/drivers/hitachi/hnas/nas_handler.py

+    def ssh_do_exec(self, command_list):
+        res = ''
+        res = self.ssh_pool.do_exec_command(command_list)
+        while 'Failed to establish SSC connection' in res:


I mean if ssh always return this, it would be a dead loop

ThisIsClark · 2021-11-08T02:22:49Z

delfin/drivers/hitachi/hnas/nas_handler.py

+        self.evs_list = []
+
+    @staticmethod
+    def get_size(limit, is_calculate=False):


Why the parameter of get_size is limit, should it be size?

This function do the same thing as NetApp's get_size, so could put this part into Tools.get_capacity_size

has deleted

ThisIsClark · 2021-11-08T02:28:52Z

delfin/drivers/hitachi/hnas/nas_handler.py

+            raise e
+
+    @staticmethod
+    def split_value_map_list(


What's this function for? Can not get the purpose of this function by the name and the implementation.

Why use parameter map_list as return value instead of use return sentence

has been modify

ThisIsClark · 2021-11-08T02:33:39Z

delfin/drivers/hitachi/hnas/nas_handler.py

+        header_index = 0
+        table = values.split("\r\n")
+        for i in range(0, len(table)):
+            if constant.PATTERN.search(table[i]):


What's this PATTERN for? Please use a meaningful name.

In order to search out the header of the data table and delete the part above the header

ThisIsClark · 2021-11-08T02:34:20Z

delfin/drivers/hitachi/hnas/nas_handler.py

+            map_list.append(value_map)
+
+    @staticmethod
+    def get_table_data(values):


What's this function for? values is a table? Which table?

After SSH executes the interface, it will return useless information other than the required data, such as login information, header and the execution command itself. We need to eliminate the invalid data. This is mainly the function

ThisIsClark · 2021-11-08T02:36:36Z

delfin/drivers/hitachi/hnas/nas_handler.py

+            location_map = {}
+            serial_map = {}
+            if len(model_map_list) > 0:
+                model_map = model_map_list[-1]


If only the last item is needed, why just pass the last one as parameter instead of the whole list?

Because there may be dirty data, only the last data object is needed

ThisIsClark · 2021-11-08T03:06:15Z

delfin/drivers/hitachi/hnas/nas_handler.py

+            raise e
+
+    @staticmethod
+    def split_value_map_list(


Why use parameter map_list as return value instead of use return sentence

ThisIsClark · 2021-11-08T03:10:02Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                disk_info, disk_map_list, 'Capacity', split=":")
+            disks_list = []
+            for disk_map in disk_map_list:
+                if 'Status' in disk_map:


Why is this if sentence is needed?

Because parsed data may be dirty data with incomplete or useless information in the data object map, only if this key exists in the data object map can it be confirmed that it has completed reliable data, and then proceed to the next step of parsi

ThisIsClark · 2021-11-08T03:11:40Z

delfin/drivers/hitachi/hnas/nas_handler.py

+        size_array = size_info.split("\r\n")
+        size_map = {}
+        pool_name = None
+        count = 0


What does this count for? Seems not used.

has deleted

ThisIsClark · 2021-11-08T03:13:07Z

delfin/drivers/hitachi/hnas/nas_handler.py

+        pool_name = None
+        count = 0
+        for size in size_array:
+            if 'Span ' in size:


Why put size to 0 when has 'span' in size?

Because of its size, there may be two data objects that need to be added up

ThisIsClark · 2021-11-08T03:20:20Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                free_array = size.split()
+                if len(free_array) > 2:
+                    count += 1
+                    free_size = free_array[0].replace('GiB', 'GB')


GiB and GB should be different unit, please make sure whether we can do this that change GiB to GB directly

It can be converted to GB as determined on hnAS management interface

ThisIsClark · 2021-11-08T03:23:07Z

delfin/drivers/hitachi/hnas/nas_handler.py

+            size_map = self.get_pool_size()
+            for pool in pool_array:
+                value_array = pool.split()
+                if len(value_array) == 6:


What's the 6 mean? Why only the length is 6 then we can add it to pool?

Some useless information will be obtained through SSH.the information in each storage pool is larger than 6 columns, the useless information that is smaller than 6 columns is excluded to avoid dirty data

ThisIsClark · 2021-11-08T03:23:48Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                value_array = pool.split()
+                if len(value_array) == 6:
+                    total_capacity = \
+                        self.get_size(value_array[3] + "GB")


Please do not use this magic number
Same as other places
https://stackoverflow.com/questions/47882/what-is-a-magic-number-and-why-is-it-bad

has been modify

ThisIsClark · 2021-11-08T03:28:24Z

delfin/drivers/hitachi/hnas/nas_handler.py

+            nodes_array = self.get_table_data(node_info)
+            for nodes in nodes_array:
+                node = nodes.split()
+                if len(node) > 2:


Do not use this magic number
Please investigate all the magic numbers and give it a meaningful name if needed.
Not all the magic number is not allowed, for example:

if len(xxx) > 0

this is allowed, because we can know what we want to judge whether xxx is empty, but for this:

if len(xxx) > 3

we can know nothing about what this for

Numbers are now consolidated in constant files and given names to make them easier to read

JiuyunZhao · 2021-11-08T02:16:37Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                else:
+                    value_map[key] = value
+            else:
+                if value_map != {} and value_key in value_map:


How about if value_key in value_map: xxx ? and also line94, line97.

has been modify

JiuyunZhao · 2021-11-08T02:23:10Z

delfin/drivers/hitachi/hnas/nas_handler.py

+    def get_table_data(values):
+        header_index = 0
+        table = values.split("\r\n")
+        for i in range(0, len(table)):


How about for i in range(len(table)): xxx ?

has been modify

JiuyunZhao · 2021-11-08T02:29:19Z

delfin/drivers/hitachi/hnas/nas_handler.py

+    def format_storage_info(self, storage_map_list,
+                            model_map_list, version_map_list,
+                            location_map_list, serial_map_list):
+        if len(storage_map_list) > 0:


How about if not storage_map_list: raise StorageBackendException('xxx') ?

has been modify

JiuyunZhao · 2021-11-08T02:38:48Z

delfin/drivers/hitachi/hnas/nas_handler.py

+            version_map = {}
+            location_map = {}
+            serial_map = {}
+            if len(model_map_list) > 0:


How about model_map = model_map_list[-1] if model_map_list else {} ? and the following 3 lines are the same.

has been modify

JiuyunZhao · 2021-11-08T02:41:17Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                location_map = location_map_list[-1]
+            if len(serial_map_list) > 0:
+                serial_map = serial_map_list[-1]
+            version = version_map.get("Software").split('(')


If version_map.get("Software") is None, None.split() will raise an exception, and next line is same.

has been modify

JiuyunZhao · 2021-11-08T03:41:21Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                if 'Portname' in value_map:
+                    status = value_map.get('Status', None)
+                    health = constants.PortHealthStatus.ABNORMAL
+                    if status and status == 'Good':


How about if status == 'Good': xxx ?

has been modify

JiuyunZhao · 2021-11-08T03:45:01Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                        'name': 'FC' + port_id,
+                        'storage_id': storage_id,
+                        'native_port_id': port_id,
+                        'location': None,


If info cannot be attained from storage, it can be deleted, and same as 7 lines below.

has been modify

JiuyunZhao · 2021-11-08T03:46:35Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                        'health_status': health,
+                        'type': constants.PortType.FC,
+                        'logical_type': None,
+                        'speed': speed * (1000 ** 3),


Please use oslo_utils.units.G instead.

has been modify

JiuyunZhao · 2021-11-08T03:58:41Z

delfin/drivers/hitachi/hnas/nas_handler.py

+            for fs in fs_array:
+                fs_info = list(filter(None, fs.split("  ")))
+                if len(fs_info) > 8:
+                    total_capacity = fs_info[3].replace(" ", '')


It is recommended to use only one of " and ', and it isn't recommended to use " in one place and use ' in the other place.

has been modify

JiuyunZhao · 2021-11-08T03:59:33Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                    total_capacity = self.get_size(total_capacity)
+                    used_capacity = self.get_size(used_capacity)
+                    free_capacity = self.get_size(free_capacity)
+                    type = constants.VolumeType.THICK \


type is a built-in name, please use other variable name.

has been modify

ThisIsClark · 2021-11-08T03:50:10Z

delfin/tests/unit/drivers/hitachi/hnas/test_constans.py

@@ -0,0 +1,832 @@
+# Copyright 2021 The SODA Authors.


It's just a constants file, no test in this file, so please change the file name from test_constans to constants

has been modify

JiuyunZhao · 2021-11-08T06:10:35Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                    type = constants.VolumeType.THICK \
+                        if fs_info[8] == 'No' \
+                        else constants.VolumeType.THIN
+                    pool_id = None \


How about status, pool_id = status_map.get(fs_info[0]) if status_map.get(fs_info[0]) else (None, None) ?

has been modify

JiuyunZhao · 2021-11-08T06:12:11Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                        'storage_id': storage_id,
+                        'native_filesystem_id': fs_info[1],
+                        'native_pool_id': pool_id,
+                        'compressed': None,


If info cannot be attained from storage, it can be deleted, and same as the 3 lines below.

has been modify

JiuyunZhao · 2021-11-08T06:18:05Z

delfin/drivers/hitachi/hnas/nas_handler.py

+        fs_info = self.ssh_do_exec([constant.FS_STATUS_COMMAND])
+        fs_array = self.get_table_data(fs_info)
+        evs_list = []
+        for fs in fs_array:


How about code as following, so we can know what's the meaning of number 0 and 4.

xxx_index = 0 xxx_index = 4 ... evs_list.append([fs_info_array[xxx_index], fs_info_array[xxx_index]])

has been modify

JiuyunZhao · 2021-11-08T06:22:59Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                quota_map_list = []
+                self.split_value_map_list(quota_info, quota_map_list, 'Usage')
+                for quota_map in quota_map_list:
+                    type = None


type is a built-in name, please use other variable name.

has been modify

JiuyunZhao · 2021-11-08T06:24:18Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                    type = None
+                    user_group_name = None
+                    qtree_id = None
+                    if 'Group' in quota_map.get('Target'):


If quota_map.get('Target') is None, Group in None will raise an exception.

has been modify

JiuyunZhao · 2021-11-08T06:50:15Z

delfin/drivers/hitachi/hnas/nas_handler.py

+                    if nfs.get('Exportpath') == qtree['path'] \
+                            and qtree['native_filesystem_id'] \
+                            == nfs.get('Filesystemlabel'):
+                        qtree_id = qtree['native_qtree_id']


Here maybe need a break statement.

Now there's something else that needs to be done, so can't break it

JiuyunZhao · 2021-11-08T06:53:02Z

delfin/tests/unit/drivers/hitachi/hnas/test_hnas.py

+class Request:
+    def __init__(self):
+        self.environ = {'delfin.context': context.RequestContext()}
+        pass


pass is redundant.

Has been modified

JiuyunZhao · 2021-11-08T06:54:43Z

delfin/tests/unit/drivers/hitachi/hnas/test_hnas.py

+from delfin.drivers.utils.ssh_client import SSHPool
+
+
+class Request:


I don't find where this class is used, please confirm it.

Has been modified

JiuyunZhao · 2021-11-08T07:01:24Z

delfin/tests/unit/drivers/hitachi/hnas/test_hnas.py

+
+
+class TestHitachiHNasDriver(TestCase):
+    SSHPool.get = mock.Mock(


The return type of SSHPool.get is not set, please confirm it.

sshclient is returned, please confirm

JiuyunZhao · 2021-11-08T07:03:16Z

delfin/tests/unit/drivers/hitachi/hnas/test_hnas.py

+    SSHPool.get = mock.Mock(
+        return_value={paramiko.SSHClient()})
+
+    SSHPool.do_exec_command = mock.Mock(


Every use case has SSHPool.do_exec_command = mock.Mock ..., I don't understand the meaning of this class variable, please confirm it.

The purpose of the mock SSH is to call the interface and return the specified result

Optimize code format specification and unit test specification

unit test specification

add storage degraded status

2. Delete the Ethernet logical port collection. 3. Change the collection mode of the hard upper limit for quota collection. 4. Optimize code based on test questions. 5. Refine unit tests based on modifications

Hnas code is perfect

2. Delete the Ethernet logical port collection. 3. Change the collection mode of the hard upper limit for quota collection. 4. Optimize code based on test questions. 5. Refine unit tests based on modifications

1. Optimize alarm paging and complete alarm location information.

qinwang-murphy · 2021-11-24T04:28:45Z

delfin/drivers/hitachi/hnas/nas_handler.py

+            if 'EVS' not in result:
+                raise exception.InvalidIpOrPort()
+        except Exception as e:
+            LOG.error("Failed to login netapp %s" %


The log is incorrect. The device is HNAS, not NetApp.

qinwang-murphy · 2021-12-06T01:50:05Z

delfin/drivers/hitachi/hnas/constants.py

+
+CLUSTER_STATUS = {
+    'Robust': constants.StorageStatus.NORMAL,
+    'Degraded': constants.StorageStatus.ABNORMAL,


The device has a degraded state. The degraded state should not correspond to abnormal.

Modify Device Status Added degraded status

set ssh connect timeout

joseph-v · 2021-12-23T06:30:46Z

Please update setup.py to add entrypoint for the driver

update setup.py

joseph-v

LGTM

wisererik

LGTM

guankc and others added 4 commits October 25, 2021 14:01

Initialize the HNAS driver

150e95c

New SSH method to simulate shell execution (hnAS driver call interfac…

d0a5b96

…e required)

Time Zone Problem

187d3a3

Merge pull request #277 from guankc/hnas_init

e3a0e2e

Initialize the HNAS driver

ThisIsClark reviewed Nov 1, 2021

View reviewed changes

guankc and others added 3 commits November 2, 2021 09:41

Optimize code format specification and unit test specification

b5640f3

Optimize code format specification and unit test specification

e92b672

Merge pull request #282 from guankc/hnas_init

dd035bc

Optimize code format specification and unit test specification

JiuyunZhao reviewed Nov 5, 2021

View reviewed changes

ThisIsClark reviewed Nov 8, 2021

View reviewed changes

JiuyunZhao reviewed Nov 8, 2021

View reviewed changes

Optimize code format

34faf17

ThisIsClark reviewed Nov 8, 2021

View reviewed changes

JiuyunZhao reviewed Nov 8, 2021

View reviewed changes

guankc and others added 14 commits November 9, 2021 11:13

Optimize code format specification and unit test specification

231fe6f

unit test specification

ec28367

Merge pull request #293 from guankc/hnas_init

bd3c59f

Optimize code format specification and unit test specification

unit test specification

08e183f

Merge pull request #294 from guankc/hnas_init

bbc17fb

unit test specification

Merge branch 'master' into hnas_init

a7ca510

add storage degraded status

2d29c27

add storage degraded status

dd20961

add storage degraded status

1. Optimize alarm paging and complete alarm location information.

3678c18

2. Delete the Ethernet logical port collection. 3. Change the collection mode of the hard upper limit for quota collection. 4. Optimize code based on test questions. 5. Refine unit tests based on modifications

Merge remote-tracking branch 'origin/hnas_init' into hnas_init

211c904

Merge pull request #330 from guankc/hnas_init

2587325

Hnas code is perfect

1. Optimize alarm paging and complete alarm location information.

a559bd1

2. Delete the Ethernet logical port collection. 3. Change the collection mode of the hard upper limit for quota collection. 4. Optimize code based on test questions. 5. Refine unit tests based on modifications

Merge pull request #337 from guankc/hnas_init

331eedd

1. Optimize alarm paging and complete alarm location information.

Update nas_handler.py

ec840ff

Update nas_handler.py

139521b

qinwang-murphy reviewed Dec 6, 2021

View reviewed changes

guankc and others added 5 commits December 6, 2021 10:03

Modify Device Status Added degraded status

40f3025

Modify Device Status Added degraded status

set ssh connect timeout

fafaf7e

set ssh connect timeout

923f665

Merge pull request #376 from guankc/hnas_init

7acfe51

set ssh connect timeout

Merge branch 'master' into hnas_init

2f729a5

guankc and others added 3 commits December 24, 2021 11:09

update setup.py

30bb051

Merge pull request #385 from guankc/hnas_init

d61a637

update setup.py

Merge branch 'master' into hnas_init

a1e22ae

joseph-v approved these changes Dec 24, 2021

View reviewed changes

wisererik approved these changes Dec 24, 2021

View reviewed changes

wisererik merged commit b004d74 into sodafoundation:master Dec 24, 2021

		from delfin.drivers.utils.ssh_client import SSHPool


		class Request:



		class TestHitachiHNasDriver(TestCase):
		SSHPool.get = mock.Mock(

Initialize the HNAS driver #767

Initialize the HNAS driver #767

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guankc commented Oct 25, 2021

codecov bot commented Oct 25, 2021 • edited Loading

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codecov bot commented Oct 25, 2021 •

edited

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