A library for working with ONTAP's REST APIs simply in Python
Project description
NetApp ONTAP
The Python client library is a package you can use when writing scripts to access the ONTAP REST API. It provides support for several underlying services, including connection management, asynchronous request processing, and exception handling. By using the Python client library, you can quickly develop robust code to support the automation of your ONTAP deployments.
Getting started
Software requirements
Before installing the Python client library, you must make sure the following packages are installed on your system:
1. python 3.5 or later
2. requests 2.21.0 or later
3. marshmallow between 3.0.0rc5 and 3.0.0rc7
Installing and importing the package
You must install the package using the pip utility:
pip install netapp-ontap
After installing the package, you can import the objects you need into your application:
from netapp_ontap.resources import Volume, Snapshot
Creating an object
You can create an object in several different ways. Here are three examples of
creating an equivalent netapp_ontap.resources.volume
object.
from netapp_ontap.resources import Volume
# Example 1 - keyword arguments
volume = Volume(name='vol1', svm={'name': 'vs1'}, aggregates=[{'name': 'aggr1'}])
# Example 2 - dict as keyword arguments
data = {
'name': 'vol1',
'svm': {'name': 'vs1'},
'aggregates': [{'name': 'aggr1'}],
}
volume = Volume(**data)
# Example 3 - using the from_dict() method
volume = Volume.from_dict({
'name': 'vol1',
'svm': {'name': 'vs1'},
'aggregates': [{'name': 'aggr1'}],
})
Performing actions on an object
After you create an object, you can perform actions on the object based on the purpose and design of your application. The example below illustrates how to create a new volume and then take a snapshot.
Note that when using the library, in all cases you must first establish a
connection to the management LIF of the ONTAP system using the
netapp_ontap.host_connection.HostConnection
object. In the example below,
the connection is created and then set as the global default.
This means that all objects and the associated actions reuse
this same connection. See Host connections for more information.
from netapp_ontap import config
from netapp_ontap.host_connection import HostConnection
from netapp_ontap.resources import Volume, Snapshot
config.CONNECTION = HostConnection('myhost.mycompany.com', 'username', 'password')
volume = Volume(name='vol1', svm={'name': 'vs1'}, aggregates=[{'name': 'aggr1'}])
volume.post()
snapshot = Snapshot.from_dict({
'name': '%s_snapshot' % volume.name,
'comment': 'A snapshot of %s' % volume.name,
'volume': volume.to_dict(),
})
snapshot.post()
Additional considerations
In most cases, the objects and actions in the library can be mapped directly to equivalent cURL commands run against the ONTAP REST interface. However, there are a few exceptions you should be aware of.
Property names
If a property of a resource is named the same as one of the Python reserved names, the name will be transposed when accessing the member of the resource. For example, if there is a resource named "Foo" that has a property defined in the API named "class", the property name would instead be "class_" when using the library. For example:
from netapp_ontap.resources import Foo
foo = Foo()
foo.class_ = "high"
Documentation
To view the full documentation, visit https://library.netapp.com/ecmdocs/ECMLP2858435/html/index.html
or to view an offline copy, see the <python_environment>/lib/<python_version>/site_packages/netapp_ontap/docs
Documentation of ONTAP's REST APIs and other helpful resources can be found at https://devnet.netapp.com/restapi.
Compatibility
The version assigned to the library consists of the major ONTAP release it is generated from and a minor version for the library within that release. The minor version allows the library to be updated within the same ONTAP release. For example, valid versions for the library associated with ONTAP 9.6 include 9.6.1, 9.6.2, and so on.
Client libraries that have the same major version as ONTAP are completely compatible. For example, the libraries netapp-ontap-9.6.1 and netapp-ontap-9.6.4 are fully compatible with both ONTAP 9.6 and ONTAP 9.6P1.
A client library with a major version that does not match the ONTAP release can still be used, however it will not be fully compatible with the REST API. For example, the library netapp-ontap-9.6.4 is only partially compatible with ONTAP 9.7. In these cases, the library may encounter unknown fields or APIs. When this occurs, the library will ignore unknown fields, return an error, or raise a runtime exception.
Copyright, trademarks, and feedback
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