[goal] Deprecate the JSON formatted policy file

As per the community goal of migrating the policy file
the format from JSON to YAML[1], we need to do two things:

1. Change the default value of '[oslo_policy] policy_file''
config option from 'policy.json' to 'policy.yaml' with
upgrade checks.

2. Deprecate the JSON formatted policy file on the project side
via warning in doc and releasenotes.

Also replace policy.json to policy.yaml ref from doc and tests.

[1]https://governance.openstack.org/tc/goals/selected/wallaby/migrate-policy-format-from-json-to-yaml.html

Change-Id: I207c02ba71fe60635fd3406c9c9364c11f259bae

.zuul.yaml

@@ -2,8 +2,7 @@
     templates:
       - check-requirements
       - openstack-cover-jobs
-      - openstack-lower-constraints-jobs
+      - openstack-python3-wallaby-jobs
-      - openstack-python3-victoria-jobs
       - publish-openstack-docs-pti
       - release-notes-jobs-python3
     check:
@@ -102,7 +101,7 @@
 - job:
     name: watcher-tempest-multinode
     parent: watcher-tempest-functional
-    nodeset: openstack-two-node-bionic
+    nodeset: openstack-two-node-focal
     roles:
       - zuul: openstack/tempest
     group-vars:

doc/source/admin/policy.rst

@@ -17,6 +17,14 @@
 Policies
 ========
 
+.. warning::
+
+   JSON formatted policy file is deprecated since Watcher 6.0.0 (Wallaby).
+   This `oslopolicy-convert-json-to-yaml`__ tool will migrate your existing
+   JSON-formatted policy file to YAML in a backward-compatible way.
+
+.. __: https://docs.openstack.org/oslo.policy/latest/cli/oslopolicy-convert-json-to-yaml.html
+
 Watcher's public API calls may be restricted to certain sets of users using a
 policy configuration file. This document explains exactly how policies are
 configured and what they apply to.

doc/source/contributor/plugin/strategy-plugin.rst

@@ -56,9 +56,6 @@ Here is an example showing how you can write a plugin called ``NewStrategy``:
     # filepath: thirdparty/new.py
     # import path: thirdparty.new
     import abc
-
-    import six
-
     from watcher._i18n import _
     from watcher.decision_engine.strategy.strategies import base
 

lower-constraints.txt

@@ -1,150 +0,0 @@
-alabaster==0.7.10
-alembic==0.9.8
-amqp==2.2.2
-appdirs==1.4.3
-APScheduler==3.5.1
-asn1crypto==0.24.0
-automaton==1.14.0
-beautifulsoup4==4.6.0
-cachetools==2.0.1
-certifi==2018.1.18
-cffi==1.11.5
-chardet==3.0.4
-cliff==2.11.0
-cmd2==0.8.1
-contextlib2==0.5.5
-coverage==4.5.1
-croniter==0.3.20
-cryptography==2.1.4
-debtcollector==1.19.0
-decorator==4.2.1
-deprecation==2.0
-doc8==0.8.0
-docutils==0.14
-dogpile.cache==0.6.5
-dulwich==0.19.0
-enum34==1.1.6
-enum-compat==0.0.2
-eventlet==0.20.0
-extras==1.0.0
-fasteners==0.14.1
-fixtures==3.0.0
-freezegun==0.3.10
-futurist==1.8.0
-gitdb2==2.0.3
-GitPython==2.1.8
-gnocchiclient==7.0.1
-greenlet==0.4.13
-idna==2.6
-imagesize==1.0.0
-iso8601==0.1.12
-Jinja2==2.10
-jmespath==0.9.3
-jsonpatch==1.21
-jsonpointer==2.0
-jsonschema==3.2.0
-keystoneauth1==3.4.0
-keystonemiddleware==4.21.0
-kombu==4.1.0
-linecache2==1.0.0
-logutils==0.3.5
-lxml==4.1.1
-Mako==1.0.7
-MarkupSafe==1.0
-mccabe==0.2.1
-microversion_parse==0.2.1
-monotonic==1.4
-msgpack==0.5.6
-munch==2.2.0
-netaddr==0.7.19
-netifaces==0.10.6
-networkx==2.2
-openstacksdk==0.12.0
-os-api-ref===1.4.0
-os-client-config==1.29.0
-os-service-types==1.2.0
-os-testr==1.0.0
-osc-lib==1.10.0
-os-resource-classes==0.4.0
-oslo.cache==1.29.0
-oslo.concurrency==3.26.0
-oslo.config==5.2.0
-oslo.context==2.21.0
-oslo.db==4.35.0
-oslo.i18n==3.20.0
-oslo.log==3.37.0
-oslo.messaging==8.1.2
-oslo.middleware==3.35.0
-oslo.policy==1.34.0
-oslo.reports==1.27.0
-oslo.serialization==2.25.0
-oslo.service==1.30.0
-oslo.upgradecheck==0.1.0
-oslo.utils==3.36.0
-oslo.versionedobjects==1.32.0
-oslotest==3.3.0
-packaging==17.1
-Paste==2.0.3
-PasteDeploy==1.5.2
-pbr==3.1.1
-pecan==1.3.2
-pika==0.10.0
-pika-pool==0.1.3
-prettytable==0.7.2
-psutil==5.4.3
-pycadf==2.7.0
-pycparser==2.18
-Pygments==2.2.0
-pyinotify==0.9.6
-pyOpenSSL==17.5.0
-pyparsing==2.2.0
-pyperclip==1.6.0
-python-ceilometerclient==2.9.0
-python-cinderclient==3.5.0
-python-dateutil==2.7.0
-python-editor==1.0.3
-python-glanceclient==2.9.1
-python-ironicclient==2.5.0
-python-keystoneclient==3.15.0
-python-mimeparse==1.6.0
-python-monascaclient==1.12.0
-python-neutronclient==6.7.0
-python-novaclient==14.1.0
-python-openstackclient==3.14.0
-python-subunit==1.2.0
-pytz==2018.3
-PyYAML==3.12
-repoze.lru==0.7
-requests==2.18.4
-requestsexceptions==1.4.0
-restructuredtext-lint==1.1.3
-rfc3986==1.1.0
-Routes==2.4.1
-simplegeneric==0.8.1
-simplejson==3.13.2
-smmap2==2.0.3
-snowballstemmer==1.2.1
-SQLAlchemy==1.2.5
-sqlalchemy-migrate==0.11.0
-sqlparse==0.2.4
-statsd==3.2.2
-stestr==2.0.0
-stevedore==1.28.0
-taskflow==3.7.1
-Tempita==0.5.2
-tenacity==4.9.0
-testresources==2.0.1
-testscenarios==0.5.0
-testtools==2.3.0
-traceback2==1.4.0
-tzlocal==1.5.1
-ujson==1.35
-unittest2==1.1.0
-urllib3==1.22
-vine==1.1.4
-waitress==1.1.0
-warlock==1.3.0
-WebOb==1.8.5
-WebTest==2.0.29
-wrapt==1.10.11
-WSME==0.9.2

releasenotes/notes/deprecate-json-formatted-policy-file-3a92379e9f5dd203.yaml

@@ -0,0 +1,20 @@
+---
+upgrade:
+  - |
+    The default value of ``[oslo_policy] policy_file`` config option has
+    been changed from ``policy.json`` to ``policy.yaml``.
+    Operators who are utilizing customized or previously generated
+    static policy JSON files (which are not needed by default), should
+    generate new policy files or convert them in YAML format. Use the
+    `oslopolicy-convert-json-to-yaml
+    <https://docs.openstack.org/oslo.policy/latest/cli/oslopolicy-convert-json-to-yaml.html>`_
+    tool to convert a JSON to YAML formatted policy file in
+    backward compatible way.
+deprecations:
+  - |
+    Use of JSON policy files was deprecated by the ``oslo.policy`` library
+    during the Victoria development cycle. As a result, this deprecation is
+    being noted in the Wallaby cycle with an anticipated future removal of support
+    by ``oslo.policy``. As such operators will need to convert to YAML policy
+    files. Please see the upgrade notes for details on migration of any
+    custom policy files.

releasenotes/source/index.rst

@@ -21,6 +21,7 @@ Contents:
    :maxdepth: 1
 
    unreleased
+   victoria
    ussuri
    train
    stein

releasenotes/source/locale/en_GB/LC_MESSAGES/releasenotes.po

@@ -1,14 +1,15 @@
 # Andi Chandler <andi@gowling.com>, 2017. #zanata
 # Andi Chandler <andi@gowling.com>, 2018. #zanata
+# Andi Chandler <andi@gowling.com>, 2020. #zanata
 msgid ""
 msgstr ""
 "Project-Id-Version: python-watcher\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2018-11-08 01:22+0000\n"
+"POT-Creation-Date: 2020-10-27 04:13+0000\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"PO-Revision-Date: 2018-11-07 06:15+0000\n"
+"PO-Revision-Date: 2020-10-28 11:13+0000\n"
 "Last-Translator: Andi Chandler <andi@gowling.com>\n"
 "Language-Team: English (United Kingdom)\n"
 "Language: en_GB\n"
@@ -54,6 +55,61 @@ msgstr "1.7.0"
 msgid "1.9.0"
 msgstr "1.9.0"
 
+msgid "2.0.0"
+msgstr "2.0.0"
+
+msgid "3.0.0"
+msgstr "3.0.0"
+
+msgid "4.0.0"
+msgstr "4.0.0"
+
+msgid "A ``watcher-status upgrade check`` has been added for this."
+msgstr "A ``watcher-status upgrade check`` has been added for this."
+
+msgid ""
+"A new threadpool for the decision engine that contributors can use to "
+"improve the performance of many operations, primarily I/O bound onces. The "
+"amount of workers used by the decision engine threadpool can be configured "
+"to scale according to the available infrastructure using the "
+"`watcher_decision_engine.max_general_workers` config option. Documentation "
+"for contributors to effectively use this threadpool is available online: "
+"https://docs.openstack.org/watcher/latest/contributor/concurrency.html"
+msgstr ""
+"A new threadpool for the decision engine that contributors can use to "
+"improve the performance of many operations, primarily I/O bound onces. The "
+"amount of workers used by the decision engine threadpool can be configured "
+"to scale according to the available infrastructure using the "
+"`watcher_decision_engine.max_general_workers` config option. Documentation "
+"for contributors to effectively use this threadpool is available online: "
+"https://docs.openstack.org/watcher/latest/contributor/concurrency.html"
+
+msgid ""
+"API calls while building the Compute data model will be retried upon "
+"failure. The amount of failures allowed before giving up and the time before "
+"reattempting are configurable. The `api_call_retries` and "
+"`api_query_timeout` parameters in the `[collector]` group can be used to "
+"adjust these paremeters. 10 retries with a 1 second time in between "
+"reattempts is the default."
+msgstr ""
+"API calls while building the Compute data model will be retried upon "
+"failure. The amount of failures allowed before giving up and the time before "
+"reattempting are configurable. The `api_call_retries` and "
+"`api_query_timeout` parameters in the `[collector]` group can be used to "
+"adjust these parameters. 10 retries with a 1 second time in between "
+"reattempts is the default."
+
+msgid ""
+"Add a new webhook API and a new audit type EVENT, the microversion is 1.4. "
+"Now Watcher user can create audit with EVENT type and the audit will be "
+"triggered by webhook API. The user guide is available online: https://docs."
+"openstack.org/watcher/latest/user/event_type_audit.html"
+msgstr ""
+"Add a new webhook API and a new audit type EVENT, the microversion is 1.4. "
+"Now Watcher user can create audit with EVENT type and the audit will be "
+"triggered by webhook API. The user guide is available online: https://docs."
+"openstack.org/watcher/latest/user/event_type_audit.html"
+
 msgid "Add a service supervisor to watch Watcher deamons."
 msgstr "Add a service supervisor to watch Watcher daemons."
 
@@ -67,6 +123,24 @@ msgstr ""
 "Add description property for dynamic action. Admin can see detail "
 "information of any specify action."
 
+msgid ""
+"Add force field to Audit. User can set --force to enable the new option when "
+"launching audit. If force is True, audit will be executed despite of ongoing "
+"actionplan. The new audit may create a wrong actionplan if they use the same "
+"data model."
+msgstr ""
+"Add force field to Audit. User can set --force to enable the new option when "
+"launching audit. If force is True, audit will be executed despite of ongoing "
+"actionplan. The new audit may create a wrong actionplan if they use the same "
+"data model."
+
+msgid ""
+"Add keystone_client Group for user to configure 'interface' and "
+"'region_name' by watcher.conf. The default value of 'interface' is 'admin'."
+msgstr ""
+"Add keystone_client Group for user to configure 'interface' and "
+"'region_name' by watcher.conf. The default value of 'interface' is 'admin'."
+
 msgid "Add notifications related to Action object."
 msgstr "Add notifications related to Action object."
 
@@ -79,6 +153,25 @@ msgstr "Add notifications related to Audit object."
 msgid "Add notifications related to Service object."
 msgstr "Add notifications related to Service object."
 
+msgid ""
+"Add show data model api for Watcher. New in version 1.3. User can use "
+"'openstack optimize datamodel list' command to view the current data model "
+"information in memory. User can also add '--audit <Audit_UUID>' to view "
+"specific data model in memory filted by the scope in audit. User can also "
+"add '--detail' to view detailed information about current data model. User "
+"can also add '--type <type>' to specify the type of data model. Default type "
+"is 'compute'. In the future, type 'storage' and 'baremetal' will be "
+"supported."
+msgstr ""
+"Add show data model API for Watcher. New in version 1.3. User can use "
+"'openstack optimize datamodel list' command to view the current data model "
+"information in memory. User can also add '--audit <Audit_UUID>' to view "
+"specific data model in memory filtered by the scope in audit. User can also "
+"add '--detail' to view detailed information about current data model. User "
+"can also add '--type <type>' to specify the type of data model. Default type "
+"is 'compute'. In the future, type 'storage' and 'baremetal' will be "
+"supported."
+
 msgid ""
 "Add start_time and end_time fields in audits table. User can set the start "
 "time and/or end time when creating CONTINUOUS audit."
@@ -93,6 +186,19 @@ msgstr ""
 "Add superseded state for an action plan if the cluster data model has "
 "changed after it has been created."
 
+msgid ""
+"Added Placement API helper to Watcher. Now Watcher can get information about "
+"resource providers, it can be used for the data model and strategies. Config "
+"group placement_client with options 'api_version', 'interface' and "
+"'region_name' is also added. The default values for 'api_version' and "
+"'interface' are 1.29 and 'public', respectively."
+msgstr ""
+"Added Placement API helper to Watcher. Now Watcher can get information about "
+"resource providers, it can be used for the data model and strategies. Config "
+"group placement_client with options 'api_version', 'interface' and "
+"'region_name' is also added. The default values for 'api_version' and "
+"'interface' are 1.29 and 'public', respectively."
+
 msgid "Added SUSPENDED audit state"
 msgstr "Added SUSPENDED audit state"
 
@@ -107,6 +213,31 @@ msgstr ""
 "scoring engine by different Strategies, which improve the code and data "
 "model re-use."
 
+msgid ""
+"Added a new config option 'action_execution_rule' which is a dict type. Its "
+"key field is strategy name and the value is 'ALWAYS' or 'ANY'. 'ALWAYS' "
+"means the callback function returns True as usual. 'ANY' means the return "
+"depends on the result of previous action execution. The callback returns "
+"True if previous action gets failed, and the engine continues to run the "
+"next action. If previous action executes success, the callback returns False "
+"then the next action will be ignored. For strategies that aren't in "
+"'action_execution_rule', the callback always returns True. Please add the "
+"next section in the watcher.conf file if your strategy needs this feature. "
+"[watcher_workflow_engines.taskflow] action_execution_rule = {'your strategy "
+"name': 'ANY'}"
+msgstr ""
+"Added a new config option 'action_execution_rule' which is a dict type. Its "
+"key field is strategy name and the value is 'ALWAYS' or 'ANY'. 'ALWAYS' "
+"means the callback function returns True as usual. 'ANY' means the return "
+"depends on the result of previous action execution. The callback returns "
+"True if previous action gets failed, and the engine continues to run the "
+"next action. If previous action executes success, the callback returns False "
+"then the next action will be ignored. For strategies that aren't in "
+"'action_execution_rule', the callback always returns True. Please add the "
+"next section in the watcher.conf file if your strategy needs this feature. "
+"[watcher_workflow_engines.taskflow] action_execution_rule = {'your strategy "
+"name': 'ANY'}"
+
 msgid ""
 "Added a new strategy based on the airflow of servers. This strategy makes "
 "decisions to migrate VMs to make the airflow uniform."
@@ -248,6 +379,15 @@ msgstr ""
 "The strategy migrates many instances and volumes efficiently with minimum "
 "downtime automatically."
 
+msgid ""
+"Added strategy \"node resource consolidation\". This strategy is used to "
+"centralize VMs to as few nodes as possible by VM migration. User can set an "
+"input parameter to decide how to select the destination node."
+msgstr ""
+"Added strategy \"node resource consolidation\". This strategy is used to "
+"centralize VMs to as few nodes as possible by VM migration. User can set an "
+"input parameter to decide how to select the destination node."
+
 msgid ""
 "Added strategy to identify and migrate a Noisy Neighbor - a low priority VM "
 "that negatively affects peformance of a high priority VM by over utilizing "
@@ -284,6 +424,19 @@ msgstr ""
 msgid "Adds baremetal data model in Watcher"
 msgstr "Adds baremetal data model in Watcher"
 
+msgid ""
+"All datasources can now be configured to retry retrieving a metric upon "
+"encountering an error. Between each attempt will be a set amount of time "
+"which can be adjusted from the configuration. These configuration options "
+"can be found in the `[watcher_datasources]` group and are named "
+"`query_max_retries` and `query_timeout`."
+msgstr ""
+"All datasources can now be configured to retry retrieving a metric upon "
+"encountering an error. Between each attempt will be a set amount of time "
+"which can be adjusted from the configuration. These configuration options "
+"can be found in the `[watcher_datasources]` group and are named "
+"`query_max_retries` and `query_timeout`."
+
 msgid ""
 "Allow decision engine to pass strategy parameters, like optimization "
 "threshold, to selected strategy, also strategy to provide parameters info to "
@@ -293,6 +446,34 @@ msgstr ""
 "threshold, to selected strategy, also strategy to provide parameters info to "
 "end user."
 
+msgid ""
+"Allow using file to override metric map. Override the metric map of each "
+"datasource as soon as it is created by the manager. This override comes from "
+"a file whose path is provided by a setting in config file. The setting is "
+"`watcher_decision_engine/metric_map_path`.  The file contains a map per "
+"datasource whose keys are the metric names as recognized by watcher and the "
+"value is the real name of the metric in the datasource. This setting "
+"defaults to `/etc/watcher/metric_map.yaml`, and presence of this file is "
+"optional."
+msgstr ""
+"Allow using file to override metric map. Override the metric map of each "
+"datasource as soon as it is created by the manager. This override comes from "
+"a file whose path is provided by a setting in config file. The setting is "
+"`watcher_decision_engine/metric_map_path`.  The file contains a map per "
+"datasource whose keys are the metric names as recognized by watcher and the "
+"value is the real name of the metric in the datasource. This setting "
+"defaults to `/etc/watcher/metric_map.yaml`, and presence of this file is "
+"optional."
+
+msgid ""
+"An Watcher API WSGI application script ``watcher-api-wsgi`` is now "
+"available. It is auto-generated by ``pbr`` and allows to run the API service "
+"using WSGI server (for example Nginx and uWSGI)."
+msgstr ""
+"An Watcher API WSGI application script ``watcher-api-wsgi`` is now "
+"available. It is auto-generated by ``pbr`` and allows to run the API service "
+"using WSGI server (for example Nginx and uWSGI)."
+
 msgid ""
 "Audits have 'name' field now, that is more friendly to end users. Audit's "
 "name can't exceed 63 characters."
@@ -300,9 +481,25 @@ msgstr ""
 "Audits have 'name' field now, that is more friendly to end users. Audit's "
 "name can't exceed 63 characters."
 
+msgid ""
+"Baremetal Model gets Audit scoper with an ability to exclude Ironic nodes."
+msgstr ""
+"Baremetal Model gets Audit scope with an ability to exclude Ironic nodes."
+
 msgid "Bug Fixes"
 msgstr "Bug Fixes"
 
+msgid ""
+"Ceilometer Datasource has been deprecated since its API has been deprecated "
+"in Ocata cycle. Watcher has supported Ceilometer for some releases after "
+"Ocata to let users migrate to Gnocchi/Monasca datasources. Since Train "
+"release, Ceilometer support will be removed."
+msgstr ""
+"Ceilometer Datasource has been deprecated since its API has been deprecated "
+"in Ocata cycle. Watcher has supported Ceilometer for some releases after "
+"Ocata to let users migrate to Gnocchi/Monasca datasources. Since Train "
+"release, Ceilometer support will be removed."
+
 msgid "Centralize all configuration options for Watcher."
 msgstr "Centralise all configuration options for Watcher."
 
@@ -360,6 +557,52 @@ msgstr ""
 "Now instances from particular project in OpenStack can be excluded from "
 "audit defining scope in audit templates."
 
+msgid ""
+"For a large cloud infrastructure, retrieving data from Nova may take a long "
+"time. To avoid getting too much data from Nova, building the compute data "
+"model according to the scope of audit."
+msgstr ""
+"For a large cloud infrastructure, retrieving data from Nova may take a long "
+"time. To avoid getting too much data from Nova, building the compute data "
+"model according to the scope of audit."
+
+msgid ""
+"Grafana has been added as datasource that can be used for collecting "
+"metrics. The configuration options allow to specify what metrics and how "
+"they are stored in grafana so that no matter how Grafana is configured it "
+"can still be used. The configuration can be done via the typical "
+"configuration file but it is recommended to configure most options in the "
+"yaml file for metrics. For a complete walkthrough on configuring Grafana "
+"see: https://docs.openstack.org/watcher/latest/datasources/grafana.html"
+msgstr ""
+"Grafana has been added as datasource that can be used for collecting "
+"metrics. The configuration options allow to specify what metrics and how "
+"they are stored in Grafana so that no matter how Grafana is configured it "
+"can still be used. The configuration can be done via the typical "
+"configuration file but it is recommended to configure most options in the "
+"yaml file for metrics. For a complete walkthrough on configuring Grafana "
+"see: https://docs.openstack.org/watcher/latest/datasources/grafana.html"
+
+msgid ""
+"If Gnocchi was configured to have a custom amount of retries and or a custom "
+"timeout then the configuration needs to moved into the "
+"`[watcher_datasources]` group instead of the `[gnocchi_client]` group."
+msgstr ""
+"If Gnocchi was configured to have a custom amount of retries and or a custom "
+"timeout then the configuration needs to moved into the "
+"`[watcher_datasources]` group instead of the `[gnocchi_client]` group."
+
+msgid ""
+"Improved interface for datasource baseclass that better defines expected "
+"values and types for parameters and return types of all abstract methods. "
+"This allows all strategies to work with every datasource provided the "
+"metrics are configured for that given datasource."
+msgstr ""
+"Improved interface for datasource baseclass that better defines expected "
+"values and types for parameters and return types of all abstract methods. "
+"This allows all strategies to work with every datasource provided the "
+"metrics are configured for that given datasource."
+
 msgid ""
 "Instance cold migration logic is now replaced with using Nova migrate "
 "Server(migrate Action) API which has host option since v2.56."
@@ -367,6 +610,17 @@ msgstr ""
 "Instance cold migration logic is now replaced with using Nova migrate "
 "Server(migrate Action) API which has host option since v2.56."
 
+msgid ""
+"Many operations in the decision engine will block on I/O. Such I/O "
+"operations can stall the execution of a sequential application "
+"significantly. To reduce the potential bottleneck of many operations the "
+"general purpose decision engine threadpool is introduced."
+msgstr ""
+"Many operations in the decision engine will block on I/O. Such I/O "
+"operations can stall the execution of a sequential application "
+"significantly. To reduce the potential bottleneck of many operations the "
+"general purpose decision engine threadpool is introduced."
+
 msgid "New Features"
 msgstr "New Features"
 
@@ -389,6 +643,13 @@ msgstr ""
 "Nova API version is now set to 2.56 by default. This needs the migrate "
 "action of migration type cold with destination_node parameter to work."
 
+msgid ""
+"Now Watcher strategy can select specific planner beyond default. Strategy "
+"can set planner property to specify its own planner."
+msgstr ""
+"Now Watcher strategy can select specific planner beyond default. Strategy "
+"can set planner property to specify its own planner."
+
 msgid "Ocata Series Release Notes"
 msgstr "Ocata Series Release Notes"
 
@@ -429,12 +690,60 @@ msgstr ""
 "resources will be called \"Audit scope\" and will be defined in each audit "
 "template (which contains the audit settings)."
 
+msgid ""
+"Python 2.7 support has been dropped. Last release of Watcher to support "
+"py2.7 is OpenStack Train. The minimum version of Python now supported by "
+"Watcher is Python 3.6."
+msgstr ""
+"Python 2.7 support has been dropped. Last release of Watcher to support "
+"py2.7 is OpenStack Train. The minimum version of Python now supported by "
+"Watcher is Python 3.6."
+
 msgid "Queens Series Release Notes"
 msgstr "Queens Series Release Notes"
 
 msgid "Rocky Series Release Notes"
 msgstr "Rocky Series Release Notes"
 
+msgid ""
+"Several strategies have changed the `node` parameter to `compute_node` to be "
+"better aligned with terminology. These strategies include "
+"`basic_consolidation` and `workload_stabilzation`. The `node` parameter will "
+"remain supported during Train release and will be removed in the subsequent "
+"release."
+msgstr ""
+"Several strategies have changed the `node` parameter to `compute_node` to be "
+"better aligned with terminology. These strategies include "
+"`basic_consolidation` and `workload_stabilzation`. The `node` parameter will "
+"remain supported during Train release and will be removed in the subsequent "
+"release."
+
+msgid ""
+"Specific strategies can override this order and use datasources which are "
+"not listed in the global preference."
+msgstr ""
+"Specific strategies can override this order and use datasources which are "
+"not listed in the global preference."
+
+msgid "Stein Series Release Notes"
+msgstr "Stein Series Release Notes"
+
+msgid ""
+"The building of the compute (Nova) data model will be done using the "
+"decision engine threadpool, thereby, significantly reducing the total time "
+"required to build it."
+msgstr ""
+"The building of the compute (Nova) data model will be done using the "
+"decision engine threadpool, thereby, significantly reducing the total time "
+"required to build it."
+
+msgid ""
+"The configuration options for query retries in `[gnocchi_client]` are "
+"deprecated and the option in `[watcher_datasources]` should now be used."
+msgstr ""
+"The configuration options for query retries in `[gnocchi_client]` are "
+"deprecated and the option in `[watcher_datasources]` should now be used."
+
 msgid ""
 "The graph model describes how VMs are associated to compute hosts. This "
 "allows for seeing relationships upfront between the entities and hence can "
@@ -455,6 +764,22 @@ msgstr ""
 "was fixed. Before fixing, it booted an instance in the service project as a "
 "migrated instance."
 
+msgid ""
+"The minimum required version of the ``[nova_client]/api_version`` value is "
+"now enforced to be ``2.56`` which is available since the Queens version of "
+"the nova compute service."
+msgstr ""
+"The minimum required version of the ``[nova_client]/api_version`` value is "
+"now enforced to be ``2.56`` which is available since the Queens version of "
+"the Nova compute service."
+
+msgid ""
+"The new strategy baseclass has significant changes in method parameters and "
+"any out-of-tree strategies will have to be adopted."
+msgstr ""
+"The new strategy baseclass has significant changes in method parameters and "
+"any out-of-tree strategies will have to be adopted."
+
 msgid ""
 "There is new ability to create Watcher continuous audits with cron interval. "
 "It means you may use, for example, optional argument '--interval \"\\*/5 \\* "
@@ -468,9 +793,27 @@ msgstr ""
 "best effort basis and therefore, we recommend you to use a minimal cron "
 "interval of at least one minute."
 
+msgid "Train Series Release Notes"
+msgstr "Train Series Release Notes"
+
 msgid "Upgrade Notes"
 msgstr "Upgrade Notes"
 
+msgid ""
+"Using ``watcher/api/app.wsgi`` script is deprecated and it will be removed "
+"in U release. Please switch to automatically generated ``watcher-api-wsgi`` "
+"script instead."
+msgstr ""
+"Using ``watcher/api/app.wsgi`` script is deprecated and it will be removed "
+"in U release. Please switch to automatically generated ``watcher-api-wsgi`` "
+"script instead."
+
+msgid "Ussuri Series Release Notes"
+msgstr "Ussuri Series Release Notes"
+
+msgid "Victoria Series Release Notes"
+msgstr "Victoria Series Release Notes"
+
 msgid ""
 "Watcher can continuously optimize the OpenStack cloud for a specific "
 "strategy or goal by triggering an audit periodically which generates an "
@@ -480,6 +823,15 @@ msgstr ""
 "strategy or goal by triggering an audit periodically which generates an "
 "action plan and run it automatically."
 
+msgid ""
+"Watcher can get resource information such as total, allocation ratio and "
+"reserved information from Placement API. Now we add some new fields to the "
+"Watcher Data Model:"
+msgstr ""
+"Watcher can get resource information such as total, allocation ratio and "
+"reserved information from Placement API. Now we add some new fields to the "
+"Watcher Data Model:"
+
 msgid ""
 "Watcher can now run specific actions in parallel improving the performances "
 "dramatically when executing an action plan."
@@ -517,6 +869,15 @@ msgstr ""
 "includes all instances. It filters excluded instances when migration during "
 "the audit."
 
+msgid ""
+"Watcher now supports configuring which datasource to use and in which order. "
+"This configuration is done by specifying datasources in the "
+"watcher_datasources section:"
+msgstr ""
+"Watcher now supports configuring which datasource to use and in which order. "
+"This configuration is done by specifying datasources in the "
+"watcher_datasources section:"
+
 msgid ""
 "Watcher removes the support to Nova legacy notifications because of Nova "
 "will deprecate them."
@@ -557,9 +918,15 @@ msgstr ""
 "Watcher supports multiple metrics backend and relies on Ceilometer and "
 "Monasca."
 
+msgid "We also add some new propeties:"
+msgstr "We also add some new properties:"
+
 msgid "Welcome to watcher's Release Notes documentation!"
 msgstr "Welcome to watcher's Release Notes documentation!"
 
+msgid "``[watcher_datasources] datasources = gnocchi,monasca,ceilometer``"
+msgstr "``[watcher_datasources] datasources = gnocchi,monasca,ceilometer``"
+
 msgid ""
 "all Watcher objects have been refactored to support OVO (oslo."
 "versionedobjects) which was a prerequisite step in order to implement "
@@ -569,6 +936,21 @@ msgstr ""
 "versionedobjects) which was a prerequisite step in order to implement "
 "versioned notifications."
 
+msgid ""
+"disk_gb_capacity: The amount of disk, take allocation ratio into account, "
+"but do not include reserved."
+msgstr ""
+"disk_gb_capacity: The amount of disk, take allocation ratio into account, "
+"but do not include reserved."
+
+msgid ""
+"disk_gb_reserved: The amount of disk a node has reserved for its own use."
+msgstr ""
+"disk_gb_reserved: The amount of disk a node has reserved for its own use."
+
+msgid "disk_ratio: Disk allocation ratio."
+msgstr "disk_ratio: Disk allocation ratio."
+
 msgid "instance.create.end"
 msgstr "instance.create.end"
 
@@ -635,6 +1017,21 @@ msgstr "instance.unshelve.end"
 msgid "instance.update"
 msgstr "instance.update"
 
+msgid ""
+"memory_mb_capacity: The amount of memory, take allocation ratio into "
+"account, but do not include reserved."
+msgstr ""
+"memory_mb_capacity: The amount of memory, take allocation ratio into "
+"account, but do not include reserved."
+
+msgid ""
+"memory_mb_reserved: The amount of memory a node has reserved for its own use."
+msgstr ""
+"memory_mb_reserved: The amount of memory a node has reserved for its own use."
+
+msgid "memory_ratio: Memory allocation ratio."
+msgstr "memory_ratio: Memory allocation ratio."
+
 msgid "new:"
 msgstr "new:"
 
@@ -649,3 +1046,16 @@ msgstr "service.delete"
 
 msgid "service.update"
 msgstr "service.update"
+
+msgid ""
+"vcpu_capacity: The amount of vcpu, take allocation ratio into account, but "
+"do not include reserved."
+msgstr ""
+"vcpu_capacity: The amount of vcpu, take allocation ratio into account, but "
+"do not include reserved."
+
+msgid "vcpu_ratio: CPU allocation ratio."
+msgstr "vcpu_ratio: CPU allocation ratio."
+
+msgid "vcpu_reserved: The amount of cpu a node has reserved for its own use."
+msgstr "vcpu_reserved: The amount of CPU a node has reserved for its own use."

releasenotes/source/victoria.rst

@@ -0,0 +1,6 @@
+=============================
+Victoria Series Release Notes
+=============================
+
+.. release-notes::
+   :branch: stable/victoria

requirements.txt

@@ -1,4 +1,4 @@
-# The order of packages is significant, because pip processes them in the order
+#  The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
@@ -7,28 +7,28 @@ jsonpatch>=1.21 # BSD
 keystoneauth1>=3.4.0 # Apache-2.0
 jsonschema>=3.2.0 # MIT
 keystonemiddleware>=4.21.0 # Apache-2.0
-lxml>=4.1.1 # BSD
+lxml>=4.5.1 # BSD
 croniter>=0.3.20 # MIT License
 os-resource-classes>=0.4.0
 oslo.concurrency>=3.26.0 # Apache-2.0
 oslo.cache>=1.29.0 # Apache-2.0
-oslo.config>=5.2.0 # Apache-2.0
+oslo.config>=6.8.0 # Apache-2.0
 oslo.context>=2.21.0 # Apache-2.0
-oslo.db>=4.35.0 # Apache-2.0
+oslo.db>=4.44.0 # Apache-2.0
 oslo.i18n>=3.20.0 # Apache-2.0
 oslo.log>=3.37.0 # Apache-2.0
 oslo.messaging>=8.1.2 # Apache-2.0
-oslo.policy>=1.34.0 # Apache-2.0
+oslo.policy>=3.6.0 # Apache-2.0
 oslo.reports>=1.27.0 # Apache-2.0
 oslo.serialization>=2.25.0 # Apache-2.0
 oslo.service>=1.30.0 # Apache-2.0
-oslo.upgradecheck>=0.1.0 # Apache-2.0
+oslo.upgradecheck>=1.3.0 # Apache-2.0
 oslo.utils>=3.36.0 # Apache-2.0
 oslo.versionedobjects>=1.32.0 # Apache-2.0
 PasteDeploy>=1.5.2 # MIT
 pbr>=3.1.1 # Apache-2.0
 pecan>=1.3.2 # BSD
-PrettyTable<0.8,>=0.7.2 # BSD
+PrettyTable>=0.7.2 # BSD
 gnocchiclient>=7.0.1 # Apache-2.0
 python-ceilometerclient>=2.9.0 # Apache-2.0
 python-cinderclient>=3.5.0 # Apache-2.0
@@ -41,9 +41,9 @@ python-openstackclient>=3.14.0 # Apache-2.0
 python-ironicclient>=2.5.0 # Apache-2.0
 SQLAlchemy>=1.2.5 # MIT
 stevedore>=1.28.0 # Apache-2.0
-taskflow>=3.7.1 # Apache-2.0
+taskflow>=3.8.0 # Apache-2.0
 WebOb>=1.8.5 # MIT
 WSME>=0.9.2 # MIT
-networkx>=2.2 # BSD
+networkx>=2.4 # BSD
 microversion_parse>=0.2.1 # Apache-2.0
 futurist>=1.8.0 # Apache-2.0

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = py36,py37,pep8
+envlist = py38,pep8
 skipsdist = True
 ignore_basepython_conflict = True
 
@@ -26,7 +26,7 @@ passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 commands =
     doc8 doc/source/ CONTRIBUTING.rst HACKING.rst README.rst
     flake8
-    bandit -r watcher -x watcher/tests/* -n5 -ll -s B320,B322
+    bandit -r watcher -x watcher/tests/* -n5 -ll -s B320
 
 [testenv:venv]
 setenv = PYTHONHASHSEED=0
@@ -132,9 +132,3 @@ commands = sphinx-build -a -W -E -d releasenotes/build/doctrees --keep-going -b
 [testenv:bandit]
 deps = -r{toxinidir}/test-requirements.txt
 commands = bandit -r watcher -x watcher/tests/* -n5 -ll -s B320
-
-[testenv:lower-constraints]
-deps =
-  -c{toxinidir}/lower-constraints.txt
-  -r{toxinidir}/test-requirements.txt
-  -r{toxinidir}/requirements.txt

watcher/api/controllers/v1/service.py

@@ -19,8 +19,6 @@ Service mechanism provides ability to monitor Watcher services state.
 """
 
 import datetime
-import six
-
 from oslo_config import cfg
 from oslo_log import log
 from oslo_utils import timeutils
@@ -70,7 +68,7 @@ class Service(base.APIBase):
         service = objects.Service.get(pecan.request.context, id)
         last_heartbeat = (service.last_seen_up or service.updated_at or
                           service.created_at)
-        if isinstance(last_heartbeat, six.string_types):
+        if isinstance(last_heartbeat, str):
             # NOTE(russellb) If this service came in over rpc via
             # conductor, then the timestamp will be a string and needs to be
             # converted back to a datetime.

watcher/api/controllers/v1/types.py

@@ -15,7 +15,6 @@
 
 from oslo_serialization import jsonutils
 from oslo_utils import strutils
-import six
 import wsme
 from wsme import types as wtypes
 
@@ -132,7 +131,7 @@ class JsonType(wtypes.UserType):
 
     def __str__(self):
         # These are the json serializable native types
-        return ' | '.join(map(str, (wtypes.text, six.integer_types, float,
+        return ' | '.join(map(str, (wtypes.text, int, float,
                                     BooleanType, list, dict, None)))
 
     @staticmethod

watcher/cmd/status.py

@@ -14,6 +14,7 @@
 
 import sys
 
+from oslo_upgradecheck import common_checks
 from oslo_upgradecheck import upgradecheck
 
 from watcher._i18n import _
@@ -43,6 +44,10 @@ class Checks(upgradecheck.UpgradeCommands):
     _upgrade_checks = (
         # Added in Train.
         (_('Minimum Nova API Version'), _minimum_nova_api_version),
+        # Added in Wallaby.
+        (_("Policy File JSON to YAML Migration"),
+         (common_checks.check_policy_json, {'conf': CONF})),
+
     )
 
 

watcher/common/policy.py

@@ -18,6 +18,7 @@
 import sys
 
 from oslo_config import cfg
+from oslo_policy import opts
 from oslo_policy import policy
 
 from watcher.common import exception
@@ -26,6 +27,12 @@ from watcher.common import policies
 _ENFORCER = None
 CONF = cfg.CONF
 
+# TODO(gmann): Remove setting the default value of config policy_file
+# once oslo_policy change the default value to 'policy.yaml'.
+# https://github.com/openstack/oslo.policy/blob/a626ad12fe5a3abd49d70e3e5b95589d279ab578/oslo_policy/opts.py#L49
+DEFAULT_POLICY_FILE = 'policy.yaml'
+opts.set_defaults(CONF, DEFAULT_POLICY_FILE)
+
 
 # we can get a policy enforcer by this init.
 # oslo policy support change policy rule dynamically.

watcher/common/rpc.py

@@ -121,22 +121,40 @@ class RequestContextSerializer(messaging.Serializer):
 def get_client(target, version_cap=None, serializer=None):
     assert TRANSPORT is not None
     serializer = RequestContextSerializer(serializer)
-    return messaging.RPCClient(TRANSPORT,
+    return messaging.RPCClient(
-                               target,
+        TRANSPORT,
-                               version_cap=version_cap,
+        target,
-                               serializer=serializer)
+        version_cap=version_cap,
+        serializer=serializer
+    )
 
 
 def get_server(target, endpoints, serializer=None):
     assert TRANSPORT is not None
     access_policy = dispatcher.DefaultRPCAccessPolicy
     serializer = RequestContextSerializer(serializer)
-    return messaging.get_rpc_server(TRANSPORT,
+    return messaging.get_rpc_server(
-                                    target,
+        TRANSPORT,
-                                    endpoints,
+        target,
-                                    executor='eventlet',
+        endpoints,
-                                    serializer=serializer,
+        executor='eventlet',
-                                    access_policy=access_policy)
+        serializer=serializer,
+        access_policy=access_policy
+    )
+
+
+def get_notification_listener(targets, endpoints, serializer=None, pool=None):
+    assert NOTIFICATION_TRANSPORT is not None
+    serializer = RequestContextSerializer(serializer)
+    return messaging.get_notification_listener(
+        NOTIFICATION_TRANSPORT,
+        targets,
+        endpoints,
+        allow_requeue=False,
+        executor='eventlet',
+        pool=pool,
+        serializer=serializer
+    )
 
 
 def get_notifier(publisher_id):

watcher/common/service.py

@@ -21,14 +21,12 @@ from oslo_concurrency import processutils
 from oslo_config import cfg
 from oslo_log import _options
 from oslo_log import log
-import oslo_messaging as om
+import oslo_messaging as messaging
 from oslo_reports import guru_meditation_report as gmr
 from oslo_reports import opts as gmr_opts
 from oslo_service import service
 from oslo_service import wsgi
 
-from oslo_messaging.rpc import dispatcher
-
 from watcher._i18n import _
 from watcher.api import app
 from watcher.common import config
@@ -183,11 +181,6 @@ class Service(service.ServiceBase):
         ]
         self.notification_endpoints = self.manager.notification_endpoints
 
-        self.serializer = rpc.RequestContextSerializer(
-            base.WatcherObjectSerializer())
-
-        self._transport = None
-        self._notification_transport = None
         self._conductor_client = None
 
         self.conductor_topic_handler = None
@@ -201,27 +194,17 @@ class Service(service.ServiceBase):
                 self.notification_topics, self.notification_endpoints
             )
 
-    @property
-    def transport(self):
-        if self._transport is None:
-            self._transport = om.get_rpc_transport(CONF)
-        return self._transport
-
-    @property
-    def notification_transport(self):
-        if self._notification_transport is None:
-            self._notification_transport = om.get_notification_transport(CONF)
-        return self._notification_transport
-
     @property
     def conductor_client(self):
         if self._conductor_client is None:
-            target = om.Target(
+            target = messaging.Target(
                 topic=self.conductor_topic,
                 version=self.API_VERSION,
             )
-            self._conductor_client = om.RPCClient(
+            self._conductor_client = rpc.get_client(
-                self.transport, target, serializer=self.serializer)
+                target,
+                serializer=base.WatcherObjectSerializer()
+            )
         return self._conductor_client
 
     @conductor_client.setter
@@ -229,21 +212,18 @@ class Service(service.ServiceBase):
         self.conductor_client = c
 
     def build_topic_handler(self, topic_name, endpoints=()):
-        access_policy = dispatcher.DefaultRPCAccessPolicy
+        target = messaging.Target(
-        serializer = rpc.RequestContextSerializer(rpc.JsonPayloadSerializer())
-        target = om.Target(
             topic=topic_name,
             # For compatibility, we can override it with 'host' opt
             server=CONF.host or socket.gethostname(),
             version=self.api_version,
         )
-        return om.get_rpc_server(
+        return rpc.get_server(
-            self.transport, target, endpoints,
+            target, endpoints,
-            executor='eventlet', serializer=serializer,
+            serializer=rpc.JsonPayloadSerializer()
-            access_policy=access_policy)
+        )
 
     def build_notification_handler(self, topic_names, endpoints=()):
-        serializer = rpc.RequestContextSerializer(rpc.JsonPayloadSerializer())
         targets = []
         for topic in topic_names:
             kwargs = {}
@@ -251,11 +231,13 @@ class Service(service.ServiceBase):
                 exchange, topic = topic.split('.')
                 kwargs['exchange'] = exchange
             kwargs['topic'] = topic
-            targets.append(om.Target(**kwargs))
+            targets.append(messaging.Target(**kwargs))
-        return om.get_notification_listener(
+
-            self.notification_transport, targets, endpoints,
+        return rpc.get_notification_listener(
-            executor='eventlet', serializer=serializer,
+            targets, endpoints,
-            allow_requeue=False, pool=CONF.host)
+            serializer=rpc.JsonPayloadSerializer(),
+            pool=CONF.host
+        )
 
     def start(self):
         LOG.debug("Connecting to '%s'", CONF.transport_url)

watcher/db/sqlalchemy/models.py

@@ -18,7 +18,6 @@ SQLAlchemy models for watcher service
 
 from oslo_db.sqlalchemy import models
 from oslo_serialization import jsonutils
-import six.moves.urllib.parse as urlparse
 from sqlalchemy import Boolean
 from sqlalchemy import Column
 from sqlalchemy import DateTime
@@ -33,7 +32,7 @@ from sqlalchemy import String
 from sqlalchemy import Text
 from sqlalchemy.types import TypeDecorator, TEXT
 from sqlalchemy import UniqueConstraint
-
+import urllib.parse as urlparse
 from watcher import conf
 
 CONF = conf.CONF

watcher/decision_engine/datasources/base.py

@@ -19,6 +19,8 @@ import time
 from oslo_config import cfg
 from oslo_log import log
 
+from watcher.common import exception
+
 CONF = cfg.CONF
 LOG = log.getLogger(__name__)
 
@@ -54,6 +56,13 @@ class DataSourceBase(object):
                       instance_root_disk_size=None,
                       )
 
+    def _get_meter(self, meter_name):
+        """Retrieve the meter from the metric map or raise error"""
+        meter = self.METRIC_MAP.get(meter_name)
+        if meter is None:
+            raise exception.MetricNotAvailable(metric=meter_name)
+        return meter
+
     def query_retry(self, f, *args, **kwargs):
         """Attempts to retrieve metrics from the external service
 
@@ -122,6 +131,30 @@ class DataSourceBase(object):
 
         pass
 
+    @abc.abstractmethod
+    def statistic_series(self, resource=None, resource_type=None,
+                         meter_name=None, start_time=None, end_time=None,
+                         granularity=300):
+        """Retrieves metrics based on the specified parameters over a period
+
+        :param resource: Resource object as defined in watcher models such as
+                         ComputeNode and Instance
+        :param resource_type: Indicates which type of object is supplied
+                              to the resource parameter
+        :param meter_name: The desired metric to retrieve as key from
+                           METRIC_MAP
+        :param start_time: The datetime to start retrieving metrics for
+        :type start_time: datetime.datetime
+        :param end_time: The datetime to limit the retrieval of metrics to
+        :type end_time: datetime.datetime
+        :param granularity: Interval between samples in measurements in
+                            seconds
+        :return: Dictionary of key value pairs with timestamps and metric
+                 values
+        """
+
+        pass
+
     @abc.abstractmethod
     def get_host_cpu_usage(self, resource, period, aggregate,
                            granularity=None):

watcher/decision_engine/datasources/ceilometer.py

@@ -161,9 +161,7 @@ class CeilometerHelper(base.DataSourceBase):
         end_time = datetime.datetime.utcnow()
         start_time = end_time - datetime.timedelta(seconds=int(period))
 
-        meter = self.METRIC_MAP.get(meter_name)
+        meter = self._get_meter(meter_name)
-        if meter is None:
-            raise exception.MetricNotAvailable(metric=meter_name)
 
         if aggregate == 'mean':
             aggregate = 'avg'
@@ -194,6 +192,12 @@ class CeilometerHelper(base.DataSourceBase):
                 item_value *= 10
         return item_value
 
+    def statistic_series(self, resource=None, resource_type=None,
+                         meter_name=None, start_time=None, end_time=None,
+                         granularity=300):
+        raise NotImplementedError(
+            _('Ceilometer helper does not support statistic series method'))
+
     def get_host_cpu_usage(self, resource, period,
                            aggregate, granularity=None):
 

watcher/decision_engine/datasources/gnocchi.py

@@ -23,7 +23,6 @@ from oslo_config import cfg
 from oslo_log import log
 
 from watcher.common import clients
-from watcher.common import exception
 from watcher.decision_engine.datasources import base
 
 CONF = cfg.CONF
@@ -72,9 +71,7 @@ class GnocchiHelper(base.DataSourceBase):
         stop_time = datetime.utcnow()
         start_time = stop_time - timedelta(seconds=(int(period)))
 
-        meter = self.METRIC_MAP.get(meter_name)
+        meter = self._get_meter(meter_name)
-        if meter is None:
-            raise exception.MetricNotAvailable(metric=meter_name)
 
         if aggregate == 'count':
             aggregate = 'mean'
@@ -123,6 +120,52 @@ class GnocchiHelper(base.DataSourceBase):
 
         return return_value
 
+    def statistic_series(self, resource=None, resource_type=None,
+                         meter_name=None, start_time=None, end_time=None,
+                         granularity=300):
+
+        meter = self._get_meter(meter_name)
+
+        resource_id = resource.uuid
+        if resource_type == 'compute_node':
+            resource_id = "%s_%s" % (resource.hostname, resource.hostname)
+            kwargs = dict(query={"=": {"original_resource_id": resource_id}},
+                          limit=1)
+            resources = self.query_retry(
+                f=self.gnocchi.resource.search, **kwargs)
+
+            if not resources:
+                LOG.warning("The {0} resource {1} could not be "
+                            "found".format(self.NAME, resource_id))
+                return
+
+            resource_id = resources[0]['id']
+
+        raw_kwargs = dict(
+            metric=meter,
+            start=start_time,
+            stop=end_time,
+            resource_id=resource_id,
+            granularity=granularity,
+        )
+
+        kwargs = {k: v for k, v in raw_kwargs.items() if k and v}
+
+        statistics = self.query_retry(
+            f=self.gnocchi.metric.get_measures, **kwargs)
+
+        return_value = None
+        if statistics:
+            # measure has structure [time, granularity, value]
+            if meter_name == 'host_airflow':
+                # Airflow from hardware.ipmi.node.airflow is reported as
+                # 1/10 th of actual CFM
+                return_value = {s[0]: s[2]*10 for s in statistics}
+            else:
+                return_value = {s[0]: s[2] for s in statistics}
+
+        return return_value
+
     def get_host_cpu_usage(self, resource, period, aggregate,
                            granularity=300):
 

watcher/decision_engine/datasources/grafana.py

@@ -21,6 +21,7 @@ from urllib import parse as urlparse
 from oslo_config import cfg
 from oslo_log import log
 
+from watcher._i18n import _
 from watcher.common import clients
 from watcher.common import exception
 from watcher.decision_engine.datasources import base
@@ -188,6 +189,12 @@ class GrafanaHelper(base.DataSourceBase):
 
         return result
 
+    def statistic_series(self, resource=None, resource_type=None,
+                         meter_name=None, start_time=None, end_time=None,
+                         granularity=300):
+        raise NotImplementedError(
+            _('Grafana helper does not support statistic series method'))
+
     def get_host_cpu_usage(self, resource, period=300,
                            aggregate="mean", granularity=None):
         return self.statistic_aggregation(

watcher/decision_engine/datasources/monasca.py

@@ -21,7 +21,6 @@ import datetime
 from monascaclient import exc
 
 from watcher.common import clients
-from watcher.common import exception
 from watcher.decision_engine.datasources import base
 
 
@@ -90,9 +89,7 @@ class MonascaHelper(base.DataSourceBase):
         stop_time = datetime.datetime.utcnow()
         start_time = stop_time - datetime.timedelta(seconds=(int(period)))
 
-        meter = self.METRIC_MAP.get(meter_name)
+        meter = self._get_meter(meter_name)
-        if meter is None:
-            raise exception.MetricNotAvailable(metric=meter_name)
 
         if aggregate == 'mean':
             aggregate = 'avg'
@@ -121,6 +118,34 @@ class MonascaHelper(base.DataSourceBase):
 
         return cpu_usage
 
+    def statistic_series(self, resource=None, resource_type=None,
+                         meter_name=None, start_time=None, end_time=None,
+                         granularity=300):
+
+        meter = self._get_meter(meter_name)
+
+        raw_kwargs = dict(
+            name=meter,
+            start_time=start_time.isoformat(),
+            end_time=end_time.isoformat(),
+            dimensions={'hostname': resource.uuid},
+            statistics='avg',
+            group_by='*',
+        )
+
+        kwargs = {k: v for k, v in raw_kwargs.items() if k and v}
+
+        statistics = self.query_retry(
+            f=self.monasca.metrics.list_statistics, **kwargs)
+
+        result = {}
+        for stat in statistics:
+            v_index = stat['columns'].index('avg')
+            t_index = stat['columns'].index('timestamp')
+            result.update({r[t_index]: r[v_index] for r in stat['statistics']})
+
+        return result
+
     def get_host_cpu_usage(self, resource, period,
                            aggregate, granularity=None):
         return self.statistic_aggregation(

watcher/decision_engine/model/model_root.py

@@ -631,7 +631,7 @@ class BaremetalModelRoot(nx.DiGraph, base.Model):
             super(BaremetalModelRoot, self).remove_node(node.uuid)
         except nx.NetworkXError as exc:
             LOG.exception(exc)
-            raise exception.IronicNodeNotFound(name=node.uuid)
+            raise exception.IronicNodeNotFound(uuid=node.uuid)
 
     @lockutils.synchronized("baremetal_model")
     def get_all_ironic_nodes(self):
@@ -643,7 +643,7 @@ class BaremetalModelRoot(nx.DiGraph, base.Model):
         try:
             return self._get_by_uuid(uuid)
         except exception.BaremetalResourceNotFound:
-            raise exception.IronicNodeNotFound(name=uuid)
+            raise exception.IronicNodeNotFound(uuid=uuid)
 
     def _get_by_uuid(self, uuid):
         try:

watcher/decision_engine/strategy/strategies/host_maintenance.py

@@ -18,8 +18,6 @@
 #
 
 from oslo_log import log
-import six
-
 from watcher._i18n import _
 from watcher.common import exception
 from watcher.decision_engine.model import element
@@ -103,7 +101,7 @@ class HostMaintenance(base.HostMaintenanceBaseStrategy):
 
     def get_instance_state_str(self, instance):
         """Get instance state in string format"""
-        if isinstance(instance.state, six.string_types):
+        if isinstance(instance.state, str):
             return instance.state
         elif isinstance(instance.state, element.InstanceState):
             return instance.state.value
@@ -116,7 +114,7 @@ class HostMaintenance(base.HostMaintenanceBaseStrategy):
 
     def get_node_status_str(self, node):
         """Get node status in string format"""
-        if isinstance(node.status, six.string_types):
+        if isinstance(node.status, str):
             return node.status
         elif isinstance(node.status, element.ServiceState):
             return node.status.value

watcher/decision_engine/strategy/strategies/zone_migration.py

@@ -350,7 +350,7 @@ class ZoneMigration(base.ZoneMigrationBaseStrategy):
     def is_in_use(self, volume):
         return getattr(volume, 'status') == IN_USE
 
-    def instances_no_attached(instances):
+    def instances_no_attached(self, instances):
         return [i for i in instances
                 if not getattr(i, "os-extended-volumes:volumes_attached")]
 

watcher/hacking/checks.py

@@ -128,22 +128,20 @@ def check_assert_called_once_with(logical_line, filename):
 @flake8ext
 def check_python3_xrange(logical_line):
     if re.search(r"\bxrange\s*\(", logical_line):
-        yield(0, "N325: Do not use xrange. Use range, or six.moves.range for "
+        yield(0, "N325: Do not use xrange. Use range for large loops.")
-                 "large loops.")
 
 
 @flake8ext
 def check_no_basestring(logical_line):
     if re.search(r"\bbasestring\b", logical_line):
-        msg = ("N326: basestring is not Python3-compatible, use "
+        msg = ("N326: basestring is not Python3-compatible, use str instead.")
-               "six.string_types instead.")
         yield(0, msg)
 
 
 @flake8ext
 def check_python3_no_iteritems(logical_line):
     if re.search(r".*\.iteritems\(\)", logical_line):
-        msg = ("N327: Use six.iteritems() instead of dict.iteritems().")
+        msg = ("N327: Use dict.items() instead of dict.iteritems().")
         yield(0, msg)
 
 

watcher/locale/en_GB/LC_MESSAGES/watcher.po

@@ -1,14 +1,15 @@
 # Andi Chandler <andi@gowling.com>, 2017. #zanata
 # Andi Chandler <andi@gowling.com>, 2018. #zanata
+# Andi Chandler <andi@gowling.com>, 2020. #zanata
 msgid ""
 msgstr ""
 "Project-Id-Version: watcher VERSION\n"
 "Report-Msgid-Bugs-To: https://bugs.launchpad.net/openstack-i18n/\n"
-"POT-Creation-Date: 2020-04-26 02:09+0000\n"
+"POT-Creation-Date: 2020-10-27 04:14+0000\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"PO-Revision-Date: 2018-11-07 06:14+0000\n"
+"PO-Revision-Date: 2020-10-28 11:02+0000\n"
 "Last-Translator: Andi Chandler <andi@gowling.com>\n"
 "Language-Team: English (United Kingdom)\n"
 "Language: en_GB\n"
@@ -187,10 +188,18 @@ msgstr "Audit Templates"
 msgid "Audit parameter %(parameter)s are not allowed"
 msgstr "Audit parameter %(parameter)s are not allowed"
 
+#, python-format
+msgid "Audit state %(state)s is disallowed."
+msgstr "Audit state %(state)s is disallowed."
+
 #, python-format
 msgid "Audit type %(audit_type)s could not be found"
 msgstr "Audit type %(audit_type)s could not be found"
 
+#, python-format
+msgid "Audit type %(audit_type)s is disallowed."
+msgstr "Audit type %(audit_type)s is disallowed."
+
 #, python-format
 msgid "AuditTemplate %(audit_template)s could not be found"
 msgstr "AuditTemplate %(audit_template)s could not be found"
@@ -243,6 +252,9 @@ msgstr "Cannot overwrite UUID for an existing efficacy indicator."
 msgid "Cannot remove 'goal' attribute from an audit template"
 msgstr "Cannot remove 'goal' attribute from an audit template"
 
+msgid "Ceilometer helper does not support statistic series method"
+msgstr "Ceilometer helper does not support statistic series method"
+
 msgid "Cluster Maintaining"
 msgstr "Cluster Maintaining"
 
@@ -369,6 +381,9 @@ msgstr "Goal %(goal)s is invalid"
 msgid "Goals"
 msgstr "Goals"
 
+msgid "Grafana helper does not support statistic series method"
+msgstr "Grafana helper does not support statistic series method"
+
 msgid "Hardware Maintenance"
 msgstr "Hardware Maintenance"
 
@@ -434,10 +449,17 @@ msgstr "Limit should be positive"
 msgid "Maximum time since last check-in for up service."
 msgstr "Maximum time since last check-in for up service."
 
+#, python-format
+msgid "Metric: %(metric)s not available"
+msgstr "Metric: %(metric)s not available"
+
 #, python-format
 msgid "Migration of type '%(migration_type)s' is not supported."
 msgstr "Migration of type '%(migration_type)s' is not supported."
 
+msgid "Minimum Nova API Version"
+msgstr "Minimum Nova API Version"
+
 msgid ""
 "Name of this node. This can be an opaque identifier. It is not necessarily a "
 "hostname, FQDN, or IP address. However, the node name must be valid within "
@@ -451,10 +473,16 @@ msgstr ""
 msgid "No %(metric)s metric for %(host)s found."
 msgstr "No %(metric)s metric for %(host)s found."
 
+msgid "No datasources available"
+msgstr "No datasources available"
+
 #, python-format
 msgid "No strategy could be found to achieve the '%(goal)s' goal."
 msgstr "No strategy could be found to achieve the '%(goal)s' goal."
 
+msgid "Node Resource Consolidation strategy"
+msgstr "Node Resource Consolidation strategy"
+
 msgid "Noisy Neighbor"
 msgstr "Noisy Neighbour"
 
@@ -606,6 +634,10 @@ msgstr "Strategy %(strategy)s could not be found"
 msgid "Strategy %(strategy)s is invalid"
 msgstr "Strategy %(strategy)s is invalid"
 
+#, python-format
+msgid "The %(data_model_type)s data model could not be found"
+msgstr "The %(data_model_type)s data model could not be found"
+
 #, python-format
 msgid "The %(name)s %(id)s could not be found"
 msgstr "The %(name)s %(id)s could not be found"
@@ -675,6 +707,13 @@ msgstr "The instance '%(name)s' could not be found"
 msgid "The ironic node %(uuid)s could not be found"
 msgstr "The Ironic node %(uuid)s could not be found"
 
+#, python-format
+msgid "The mapped compute node for instance '%(uuid)s' could not be found."
+msgstr "The mapped compute node for instance '%(uuid)s' could not be found."
+
+msgid "The node status is not defined"
+msgstr "The node status is not defined"
+
 msgid "The number of VM migrations to be performed."
 msgstr "The number of VM migrations to be performed."
 
@@ -738,6 +777,10 @@ msgstr "The total number of audited instances in strategy."
 msgid "The total number of enabled compute nodes."
 msgstr "The total number of enabled compute nodes."
 
+#, python-format
+msgid "The value %(value)s for parameter %(parameter)s is invalid"
+msgstr "The value %(value)s for parameter %(parameter)s is invalid"
+
 msgid "The value of original standard deviation."
 msgstr "The value of original standard deviation."
 

watcher/tests/api/test_hooks.py

@@ -14,14 +14,11 @@
 
 """Tests for the Pecan API hooks."""
 
-from unittest import mock
+from http import client as http_client
-
 from oslo_config import cfg
 import oslo_messaging as messaging
 from oslo_serialization import jsonutils
-import six
+from unittest import mock
-from six.moves import http_client
-
 from watcher.api.controllers import root
 from watcher.api import hooks
 from watcher.common import context
@@ -144,7 +141,7 @@ class TestNoExceptionTracebackHook(base.FunctionalTest):
         # we don't care about this garbage.
         expected_msg = ("Remote error: %s %s"
                         % (test_exc_type, self.MSG_WITHOUT_TRACE) +
-                        ("\n[u'" if six.PY2 else "\n['"))
+                        "\n['")
         actual_msg = jsonutils.loads(
             response.json['error_message'])['faultstring']
         self.assertEqual(expected_msg, actual_msg)

watcher/tests/applier/test_rpcapi.py

@@ -40,7 +40,7 @@ class TestApplierAPI(base.TestCase):
                 'check_api_version',
                 api_version=rpcapi.ApplierAPI().API_VERSION)
 
-    def test_execute_audit_without_error(self):
+    def test_execute_action_plan_without_error(self):
         with mock.patch.object(om.RPCClient, 'cast') as mock_cast:
             action_plan_uuid = utils.generate_uuid()
             self.api.launch_action_plan(self.context, action_plan_uuid)

watcher/tests/applier/test_sync.py

@@ -83,4 +83,4 @@ class TestCancelOngoingActionPlans(db_base.DbTestCase):
         m_action_list.assert_called()
         m_plan_save.assert_called()
         m_action_save.assert_called()
-        self.assertEqual(self.action.state, objects.audit.State.CANCELLED)
+        self.assertEqual(self.action.state, objects.action.State.CANCELLED)

watcher/tests/common/test_service.py

@@ -20,7 +20,6 @@ from unittest import mock
 from oslo_config import cfg
 
 import oslo_messaging as om
-from watcher.common import rpc
 from watcher.common import service
 from watcher import objects
 from watcher.tests import base
@@ -102,8 +101,6 @@ class TestService(base.TestCase):
 
     def test_init_service(self):
         dummy_service = service.Service(DummyManager)
-        self.assertIsInstance(dummy_service.serializer,
-                              rpc.RequestContextSerializer)
         self.assertIsInstance(
             dummy_service.conductor_topic_handler,
             om.rpc.server.RPCServer)

watcher/tests/decision_engine/datasources/test_gnocchi_helper.py

@@ -13,7 +13,7 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
+from datetime import datetime
 from unittest import mock
 
 from oslo_config import cfg
@@ -59,6 +59,35 @@ class TestGnocchiHelper(base.BaseTestCase):
         )
         self.assertEqual(expected_result, result)
 
+    def test_gnocchi_statistic_series(self, mock_gnocchi):
+        gnocchi = mock.MagicMock()
+        expected_result = {
+            "2017-02-02T09:00:00.000000": 5.5,
+            "2017-02-02T09:03:60.000000": 5.8
+        }
+
+        expected_measures = [
+            ["2017-02-02T09:00:00.000000", 360, 5.5],
+            ["2017-02-02T09:03:60.000000", 360, 5.8]
+        ]
+
+        gnocchi.metric.get_measures.return_value = expected_measures
+        mock_gnocchi.return_value = gnocchi
+
+        start = datetime(year=2017, month=2, day=2, hour=9, minute=0)
+        end = datetime(year=2017, month=2, day=2, hour=9, minute=4)
+
+        helper = gnocchi_helper.GnocchiHelper()
+        result = helper.statistic_series(
+            resource=mock.Mock(id='16a86790-327a-45f9-bc82-45839f062fdc'),
+            resource_type='instance',
+            meter_name='instance_cpu_usage',
+            start_time=start,
+            end_time=end,
+            granularity=360,
+        )
+        self.assertEqual(expected_result, result)
+
     def test_statistic_aggregation_metric_unavailable(self, mock_gnocchi):
         helper = gnocchi_helper.GnocchiHelper()
 

watcher/tests/decision_engine/datasources/test_monasca_helper.py

@@ -13,7 +13,7 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
+from datetime import datetime
 from unittest import mock
 
 from oslo_config import cfg
@@ -67,6 +67,43 @@ class TestMonascaHelper(base.BaseTestCase):
         )
         self.assertEqual(0.6, result)
 
+    def test_monasca_statistic_series(self, mock_monasca):
+        monasca = mock.MagicMock()
+        expected_stat = [{
+            'columns': ['timestamp', 'avg'],
+            'dimensions': {
+                'hostname': 'rdev-indeedsrv001',
+                'service': 'monasca'},
+            'id': '0',
+            'name': 'cpu.percent',
+            'statistics': [
+                ['2016-07-29T12:45:00Z', 0.0],
+                ['2016-07-29T12:50:00Z', 0.9],
+                ['2016-07-29T12:55:00Z', 0.9]]}]
+
+        expected_result = {
+            '2016-07-29T12:45:00Z': 0.0,
+            '2016-07-29T12:50:00Z': 0.9,
+            '2016-07-29T12:55:00Z': 0.9,
+        }
+
+        monasca.metrics.list_statistics.return_value = expected_stat
+        mock_monasca.return_value = monasca
+
+        start = datetime(year=2016, month=7, day=29, hour=12, minute=45)
+        end = datetime(year=2016, month=7, day=29, hour=12, minute=55)
+
+        helper = monasca_helper.MonascaHelper()
+        result = helper.statistic_series(
+            resource=mock.Mock(id='NODE_UUID'),
+            resource_type='compute_node',
+            meter_name='host_cpu_usage',
+            start_time=start,
+            end_time=end,
+            granularity=300,
+        )
+        self.assertEqual(expected_result, result)
+
     def test_statistic_aggregation_metric_unavailable(self, mock_monasca):
         helper = monasca_helper.MonascaHelper()
 

watcher/tests/policy_fixture.py

@@ -30,7 +30,7 @@ class PolicyFixture(fixtures.Fixture):
     def _setUp(self):
         self.policy_dir = self.useFixture(fixtures.TempDir())
         self.policy_file_name = os.path.join(self.policy_dir.path,
-                                             'policy.json')
+                                             'policy.yaml')
         with open(self.policy_file_name, 'w') as policy_file:
             policy_file.write(fake_policy.policy_data)
         policy_opts.set_defaults(CONF)