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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

Copyright information

Copyright © 2019 NetApp, Inc. All Rights Reserved. Printed in the U.S.

No part of this document covered by copyright may be reproduced in any form or by any means‐graphic, electronic, or mechanical, including photocopying, recording, taping, or storage in an electronic retrieval system‐without prior written permission of the copyright owner.

Software derived from copyrighted NetApp material is subject to the following license and disclaimer:

THIS SOFTWARE IS PROVIDED BY NETAPP "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL NETAPP BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

NetApp reserves the right to change any products described herein at any time, and without notice. NetApp assumes no responsibility or liability arising from the use of products described herein, except as expressly agreed to in writing by NetApp. The use or purchase of this product does not convey a license under any patent rights, trademark rights, or any other intellectual property rights of NetApp. The product described in this manual may be protected by one or more U.S. patents, foreign patents, or pending applications.

RESTRICTED RIGHTS LEGEND: Use, duplication,or disclosure by the government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.277-7103 (October 1988) and FAR 52-227-19 (June 1987).

Trademark information

NETAPP, the NETAPP logo, and the marks listed on the NetApp Trademarks page are trademarks of NetApp, Inc. Other company and product names may be trademarks of their respective owners. http://www.netapp.com/us/legal/netapptmlist.aspx

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