Implements the singleton general purpose threadpool for the decision
engine and associated tests.
A threadpool is a collection of one or more threads typically called
'workers' to which tasks can be submitted. These submitted tasks will
be scheduled by the threadpool and subsequently executed. How many
tasks will be executed concurrently is managed by the underlying
threadpool and its configuration. In Python the submission of tasks
to a threadpool returns an object called a 'future'. Futures provide
a method to interface with the task being executed that allows to
retrieve information about its state. Such as if it currently is being
executed, if it is waiting on a condition and if it has completed
succesfully. Finally, futures allow to retrieve what has been returned
by the submitted task.
In the case of most OpenStack projects instead of interfacing with native
Python concurrency the futurist library is used. This library provides
very similar interfaces to native concurrency with some extras such as
the wait_for_any method.
For more information about futurist or Python concurrency the following
references can be consulted:
https://docs.python.org/3/library/concurrent.futures.htmlhttps://docs.openstack.org/futurist/latest/reference/index.html#executors
Partially Implements: blueprint general-purpose-decision-engine-threadpool
Change-Id: I94bd9a17290967f011762f2b9c787ee7c46ff930
Add file to the reno documentation build to show release notes for
stable/train.
Use pbr instruction to increment the minor version number
automatically so that master versions are higher than the versions on
stable/train.
Change-Id: I0d5ae49a33583514925ad966de067afaa8881ff3
Sem-Ver: feature
Reason:
When there is a compute node but no virtual machine,
the command 'watcher datamodel list' should display
the information of the compute node instead of return None.
Change-Id: Id5ff7f08ac8a9883af9f0313785b756d813ed5a2
Closes-Bug: #1844948
The default planner can not create actions with right order,
The node_resouce_consolidation strategy needs to use its
own planner.
Partially Implements: blueprint node-resource-consolidation
Depends-on: I586e67f782e2965234826634ba3ff51681af4df8
Change-Id: I05b02905a3335a73b6926966de6331c632842293
Add a new pdf-docs environment to enable PDF build.
sphinxcontrib-svg2pdfconverter is used to handle SVG properly.
Change-Id: I1563579486da8912ba8a220bb08a5331e7df910b
It should've been "watcher" instead of "python-watcher" as the
config files are expected to be in /etc/watcher/. Though this is
unlikely to cause problems as this patch corrected the default
config dir.
https://review.opendev.org/#/c/658348/
Nevertheless, we should be using the correct name.
Change-Id: If6b58133eecf2fcc37e11d8c45eaa58f238ea2a8
This component is responsible for selecting an appropriate Planner based
on predefined property value passed to concrete Strategy.
Change-Id: I86de95886df5d7e9558512569601e9ea3babb0e9
Implements: bp watcher-planner-selector
Co-Authored-By: Canwei Li <li.canwei2@zte.com.cn>
This strategy is used to centralize VMs to as few nodes as possible
by VM migration. User can set a input parameter to decide how to
select the destination node.
Implements: blueprint node-resource-consolidation
Closes-Bug: #1843016
Change-Id: I104c864d532c2092f5dc6f0c8f756ebeae12f09e
Many strategies need get node used or free resources, we define
two new method for the purpose in ModelRoot class.
Change-Id: I8cb41fd560dbac9a78d25bfdba51799533db83c2
1. Add datamodel api and policy_enfoce file.
2. Add related unittest for data_model api and policy.
Partially Implements:blueprint show-datamodel-api
Change-Id: I1654685d8cf04db5dd132d43a8640ddf91893cad
1. Add datamodel list endpoint and rpc process.
2. Add datamodel list parased and return.
3. Add related unittest.
Partially Implements:blueprint show-datamodel-api
Change-Id: I758b7ca2bc3d8d596d3457277744336c6629bc4e
The new bp need to get audit type from audit,
so we need to add an audit parameter to do_execute
Partially Implements: blueprint node-resource-consolidation
Change-Id: Ia979781b32202c1821aa1cb91d24253fe6d7bd2d
watcher-tempest-strategies includes all strategies tempest,
we add it and remove all other individual strategy tempest.
Depends-on: I3e45d4a66a6e1bf55499def8550da38ddf01b638
Change-Id: I182bf0ddc528099f5115098b825e9bddae3b187a
