django eighth day summary

--1 . Complementary assets acquired
 - 2 .api checksum 

# ## Recap: 
    - CMDB Configuration Management Database Asset Acquisition
     - Vision: Automated operation and maintenance of the platform
    
 - you encountered any kind of problems in development? Deeper impression?
    - Path Navigation
     - Home sector list sectors add [] {ID: {}}
     - [{} URL title, URL title {}, {} title URL]
     - foreign key parent (autocorrelation)
     - dictionary into the session, for json serialization, then the dictionary is a digital key, the serialized into a string. 
    
# ## in the CMDB technical points: 
-. 1 .sys.path

 - 2 . Open closed principle
     - on the source code of
     - configuration Open
    
 - + 3 supports three modes scalable
     - Agent
     - SSH
    - Salt
     - ansible
     - ...
     - + importlib.import_module + arranged reflected
    
 --4 class constraints.
     - Constraint Subclasses implement some methods
     - abc.ABCMeta + abstract class abstract methods abc.abstractmethod
     - Inherited + thrown raise NotImplementedError ( '' )
    
 --5 acquisition hardware information pluggable design
     - configuration + importlib.import_module + reflective
    
 - 6 . win support and linux command

 7-- different assets at nowhere Run mode acquisition mode.
     - Agent the subprocess 
     - SSH paramiko
     - Salt salt.client
    
 - 8 .debug debugging

 - 9 
        RET . api to send information requests through the module
    Python `` `= Requests.post ( 
          URL = settings.ASSET_API, 
          Data = json.dumps (info) .encode ( ' UTF-. 8 ' ), 
          headers = { ' Content-type ' : ' file application / JSON ' } 
      ) 
    `` `
     - RET .text text
     - ret.json () deserialization
    
 --10 . thread pool
     - from concurrent.futures Import the ThreadPoolExecutor
    
 -. 11 .csrf_exempt csrf not check (the FBV)
     - from django.views.decorators.csrfImport csrf_exempt
    
 - 12 is only applied to the dispatch (the CBV) 
    `` `Python 
    from django.utils.decorators Import method_decorator 
    @method_decorator (csrf_exempt, name = ' dispatch ' )
     class AssetView (View): 
    ` ``
    
 - 13 is written recommendation api the CBV
     - djangorestframework installation
     - rest_framework use 
    `` `Python 
    from rest_framework.views Import APIView    
     from rest_framework.response Import  Response
    ` ``
     - data submitted request.data
    - request._request is the original Request 
    
    
# ## uniquely identifies 
- a physical machine:
     - sn No. The only physical machine
 
 - Physical + Virtual machine
     - sn + No. tone Interface
     - Host name
         - the host name of the only
         - keep the host name in a file
         - not originally files, reporting after acquisition is complete, the host name of the API returns, the host name is written to a file c1.com
         - second acquisition, the host name of the file is read c1.com     
         - determining whether a host name change:
             - changing operation to modify the host name + information updating hardware
             - no change to update the hardware operation information 
            
# ## hard disk data structure analysis 
`` `Python 
data = { ' 0 ': {'slot': '0', 'pd_type': 'SAS', 'capacity': '279.396', 'model': 'SEAGATE ST300MM0006     LS08S0K2B5NV'},
        '1': {'slot': '1', 'pd_type': '','SAScapacity': '279.396', 'model': 'SEAGATE ST300MM0006     LS08S0K2B5AH'},
        '2': {'slot': '2', 'pd_type': 'SATA', 'capacity': '476.939',
              'model': 'S1SZNSAFA01085L     Samsung SSD 850 PRO 512GB               EXM01B6Q'},
        '3': {'slot': '3', 'pd_type': 'SATA', 'capacity': '476.939',
              'model': 'S1AXNSAF912433K     Samsung SSD 840 PRO Series              DXM06B0Q'},
        '4': {'slot': '4', 'pd_type': 'SATA', 'capacity': '476.939',
              'model': 'S1AXNSAF303909M     Samsung SSD 840 PRO Series              DXM05B0Q'},
        '5': {'slot': '5', 'pd_type': 'SATA', 'capacity': '476.939',
              'model': 'S1AXNSAFB00549A     Samsung SSD 840 PRO Series              DXM06B0Q'}}

db_data = [
    {'id': 1, 'slot': '0', 'model': 'SEAGATE ST300MM0006     LS08S0K2B5NV', 'capacity': 999.396, 'pd_type': 'SAS',
     'server_id': 1},
    {'id': 2, 'slot': '1', 'model': 'SEAGATE ST300MM0006     LS08S0K2B5AH', 'capacity': 800.396, 'pd_type': 'SAS',
     'server_id': 1},
    {'id': 3, 'slot': '2', 'model': 'S1SZNSAFA01085L     Samsung SSD 850 PRO 512GB               EXM01B6Q',
     'capacity': 476.939, 'pd_type': 'SATA', 'server_id': 1},
    {'id': 9, 'slot': '6', 'model': 'S1AXNSAFB00549A     Samsung SSD 840 PRO Series              DXM06B0Q',
     'capacity': 476.939, 'pd_type': 'SATA', 'server_id': 1}]

data_set = set(data)
print(data_set)

db_data_set = {i['slot'] for i in db_data}
print(db_data_set)

add_slot_set = data_set - db_data_set
del_slot_set = db_data_set - data_set
update_slot_set = db_data_set & data_set
print(add_slot_set)
 Print (del_slot_set)
 Print (update_slot_set) 
`` ` 
   
# ## update hardware information 
- hard drive
     - the new hard disk
     - remove the hard disk
     - update hard disk 
    
    
# ## API check 
--1 carry on .url key parameters
     - determine key are the same
     - disadvantages:            
         - Key not dynamic
            
 - 2.key | time md5 encryption
     - key = time = & encryption Key ctime
        
        
 - rsa encryption:
     - https://www.cnblogs.com/maple-shaw/articles/7196631 .html