pyscaleio

Python library that provides convenient way to interact with ScaleIO/VxFlex REST API.

• Supported ScaleIO/VxFlex versions: 2.0
• Supported Python versions: 2.6, 2.7, 3.4, 3.5, 3.6

Library is under development!

Features

Currently supported:

• Simple API client with base methods according to ScaleIO/VxFlex documentation
• ORM-like models (StoragePool, Volume, etc.)
• Scheme validation for API responses

TODO:

• HATEOAS links processing

Installation

Install via pip:

$ pip install pyscaleio

Install as RPM package using yum or dnf on Fedora/RHEL/CentOS:

$ dnf copr enable miushanov/pyaddons
$ dnf copr enable miushanov/pyscaleio
$ dnf install python-scaleio

Usage

• Create and register API client:

import pyscaleio

# create API client
client = pyscaleio.ScaleIOClient.from_args("gateway_address", "admin", "password")

# register it for using in models
pyscaleio.add_client(client)

• Find and modify resources:

# get all volumes in cluster
volumes = pyscaleio.Volume.all()
assert len(volumes) == 1

# or, get volume by specified id
volume = pyscaleio.Volume.one_by_name("test_volume")

# and access some volume attributes
assert volume.name == "test_volume"
assert volume.size == 8 * constants.GIGABYTE

# or, resize it to new size
volume.resize(16)

volume.update()  # updates model data
assert volume.size == 16 * constants.GIGABYTE

• Create or delete resources:

# create new volume in storage pool
volume = pyscaleio.Volume.create(16, "storage_pool_id", "new_volume")
assert volume.name == "new_volume"
assert volume.size == 16 * constants.GIGABYTE

# delete volume
volume = pyscaleio.Volume.one_by_name("test_volume")
volume.delete()

• Tune client and models options:

pyscaleio.configure(
   # retries count for each request
   request_retries=0,
   # network timeout for requests
   network_timeout=30,
   # name of exported volume (according to udev/rules.d)
   volume_name="emc-2{system_id}{volume_id}",
   # prefix of exported volume
   volume_prefix="/dev/disk/by-id")

volume = pyscaleio.Volume.one_by_name("test_volume")
assert volume.path == "/dev/disk/by-id/emc-27947a0127a79ce60ca29f20900000008"

Tests

Tests for this library divided to unit tests and functional tests. Functional tests requires ScaleIO installation and available REST API Gateway service. For running functional tests use tox environment with name functional with passed variables:

• scaleio_host - IP address or hostname of ScaleIO REST API Gateway
• scaleio_user - username
• scaleio_passwd - password
• scaleio_is_secure - 1 for using https scheme otherwise 0 (optional)
• scaleio_trace - level of logging to stderr (optional)

Example:

$ scaleio_host=localhost scaleio_user=admin scaleio_passwd=passwd tox -e functional