openstack/watcher
Code Issues Proposed changes
Files
ef0f35192d22a8d3d00c9426d5185c2f442e279f
watcher/setup.cfg
Sean Mooney ef0f35192d Make Monasca client optional and lazy-load 
Monasca is deprecated for removal. This change makes the Monasca client
an optional dependency and ensures it is only imported and instantiated
when the Monasca datasource is explicitly selected. This reduces the
default footprint while preserving functionality for deployments that
still rely on Monasca.

What changed
============
- requirements.txt: remove python-monascaclient from hard deps
- setup.cfg: add [options.extras_require] monasca extra
- watcher/common/clients.py: lazy import with clear UnsupportedError
- watcher/decision_engine/datasources/monasca.py: lazy client property
  and deferred import of monascaclient.exc; reset on Unauthorized
- watcher/decision_engine/datasources/manager.py: unconditionally
  import Monasca helper and include in metric_map; helper is lazy
- tests: conditionally include Monasca based on availability; adjust
  expectations instead of skipping by default; avoid over-mocking
- tox.ini: enable optional extras via WATCHER_EXTRAS env var
- docs: datasources index notes Monasca is deprecated and optional
- releasenotes: upgrade note with install example and behavior

Why
===
- Allow deployments not using Monasca to run without the client
- Keep Monasca functional when explicitly installed via extras
- Provide clear operator guidance and smooth upgrades

Compatibility
=============
- No change for deployments that do not use Monasca
- Deployments using Monasca must install the optional extra:
  pip install watcher[monasca]

Testing
=======
- Default: tox -e py3
- With Monasca: WATCHER_EXTRAS=monasca tox -e py3

Assisted-By: GPT-5 (Cursor)
Closes-Bug: #2120192
Change-Id: I7c02b74e83d656083ce612727e6da58761200ae4
Signed-off-by: Sean Mooney <work@seanmooney.info>
2025-08-28 16:53:48 +01:00

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[metadata]
name = python-watcher
summary = OpenStack Watcher provides a flexible and scalable resource optimization service for multi-tenant OpenStack-based clouds.
description_file =
README.rst
author = OpenStack
author_email = openstack-discuss@lists.openstack.org
home_page = https://docs.openstack.org/watcher/latest/
python_requires = >=3.10
classifier =
Environment :: OpenStack
Intended Audience :: Information Technology
Intended Audience :: System Administrators
License :: OSI Approved :: Apache Software License
Operating System :: POSIX :: Linux
Programming Language :: Python
Programming Language :: Python :: Implementation :: CPython
Programming Language :: Python :: 3 :: Only
Programming Language :: Python :: 3
Programming Language :: Python :: 3.10
Programming Language :: Python :: 3.11
Programming Language :: Python :: 3.12
[files]
packages =
watcher
data_files =
etc/ = etc/*
[options.extras_require]
monasca =
python-monascaclient>=1.12.0
[entry_points]
oslo.config.opts =
watcher = watcher.conf.opts:list_opts
oslo.policy.policies =
watcher = watcher.common.policies:list_rules
oslo.policy.enforcer =
watcher = watcher.common.policy:get_enforcer
console_scripts =
watcher-api = watcher.cmd.eventlet.api:main
watcher-db-manage = watcher.cmd.dbmanage:main
watcher-decision-engine = watcher.cmd.eventlet.decisionengine:main
watcher-applier = watcher.cmd.eventlet.applier:main
watcher-sync = watcher.cmd.sync:main
watcher-status = watcher.cmd.status:main
wsgi_scripts =
watcher-api-wsgi = watcher.api.wsgi:initialize_wsgi_app
watcher.database.migration_backend =
sqlalchemy = watcher.db.sqlalchemy.migration
watcher_goals =
unclassified = watcher.decision_engine.goal.goals:Unclassified
dummy = watcher.decision_engine.goal.goals:Dummy
server_consolidation = watcher.decision_engine.goal.goals:ServerConsolidation
thermal_optimization = watcher.decision_engine.goal.goals:ThermalOptimization
workload_balancing = watcher.decision_engine.goal.goals:WorkloadBalancing
airflow_optimization = watcher.decision_engine.goal.goals:AirflowOptimization
noisy_neighbor = watcher.decision_engine.goal.goals:NoisyNeighborOptimization
saving_energy = watcher.decision_engine.goal.goals:SavingEnergy
hardware_maintenance = watcher.decision_engine.goal.goals:HardwareMaintenance
cluster_maintaining = watcher.decision_engine.goal.goals:ClusterMaintaining
watcher_scoring_engines =
dummy_scorer = watcher.decision_engine.scoring.dummy_scorer:DummyScorer
watcher_scoring_engine_containers =
dummy_scoring_container = watcher.decision_engine.scoring.dummy_scoring_container:DummyScoringContainer
watcher_strategies =
dummy = watcher.decision_engine.strategy.strategies.dummy_strategy:DummyStrategy
dummy_with_scorer = watcher.decision_engine.strategy.strategies.dummy_with_scorer:DummyWithScorer
dummy_with_resize = watcher.decision_engine.strategy.strategies.dummy_with_resize:DummyWithResize
actuator = watcher.decision_engine.strategy.strategies.actuation:Actuator
basic = watcher.decision_engine.strategy.strategies.basic_consolidation:BasicConsolidation
outlet_temperature = watcher.decision_engine.strategy.strategies.outlet_temp_control:OutletTempControl
saving_energy = watcher.decision_engine.strategy.strategies.saving_energy:SavingEnergy
vm_workload_consolidation = watcher.decision_engine.strategy.strategies.vm_workload_consolidation:VMWorkloadConsolidation
workload_stabilization = watcher.decision_engine.strategy.strategies.workload_stabilization:WorkloadStabilization
workload_balance = watcher.decision_engine.strategy.strategies.workload_balance:WorkloadBalance
uniform_airflow = watcher.decision_engine.strategy.strategies.uniform_airflow:UniformAirflow
noisy_neighbor = watcher.decision_engine.strategy.strategies.noisy_neighbor:NoisyNeighbor
storage_capacity_balance = watcher.decision_engine.strategy.strategies.storage_capacity_balance:StorageCapacityBalance
zone_migration = watcher.decision_engine.strategy.strategies.zone_migration:ZoneMigration
host_maintenance = watcher.decision_engine.strategy.strategies.host_maintenance:HostMaintenance
node_resource_consolidation = watcher.decision_engine.strategy.strategies.node_resource_consolidation:NodeResourceConsolidation
watcher_actions =
migrate = watcher.applier.actions.migration:Migrate
nop = watcher.applier.actions.nop:Nop
sleep = watcher.applier.actions.sleep:Sleep
change_nova_service_state = watcher.applier.actions.change_nova_service_state:ChangeNovaServiceState
resize = watcher.applier.actions.resize:Resize
change_node_power_state = watcher.applier.actions.change_node_power_state:ChangeNodePowerState
volume_migrate = watcher.applier.actions.volume_migration:VolumeMigrate
stop = watcher.applier.actions.stop:Stop
watcher_workflow_engines =
taskflow = watcher.applier.workflow_engine.default:DefaultWorkFlowEngine
watcher_planners =
weight = watcher.decision_engine.planner.weight:WeightPlanner
workload_stabilization = watcher.decision_engine.planner.workload_stabilization:WorkloadStabilizationPlanner
node_resource_consolidation = watcher.decision_engine.planner.node_resource_consolidation:NodeResourceConsolidationPlanner
watcher_cluster_data_model_collectors =
compute = watcher.decision_engine.model.collector.nova:NovaClusterDataModelCollector
storage = watcher.decision_engine.model.collector.cinder:CinderClusterDataModelCollector
baremetal = watcher.decision_engine.model.collector.ironic:BaremetalClusterDataModelCollector
[codespell]
skip = *.po,*.js,*.css,*.html,*.svg,HACKING.py,*hacking*,*build*,*_static*,doc/dictionary.txt,*.pyc,*.inv,*.gz,*.jpg,*.png,*.vsd,*.graffle,*.json
count =
quiet-level = 4
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