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.
Loading at creation time allows the correct datasource be used when
get_backend is called, this allows loading a datasource whose metric
names get updated outside the watcher's codebase.
The function 'load_metric_map' returns empty-dict in any error case.
Also in case the file is empty where safe_load is unable finds any
yaml documents, it will return None. [1]
Some minor refactoring in the test_manager file for readability and
added tests for file load and metric override.
1 - https://pyyaml.org/wiki/PyYAMLDocumentation
Change-Id: I1df16245f4c7dfd34066f3ab0553cd67154faa58
Implements: blueprint file-based-metric-map
This commit allows to consume notifications via notifications pools[1].
Listeners in notification pools recieves a copy of notification. It
will let Watcher to sync Data Models of Decision Engines.
[1]: https://docs.openstack.org/oslo.messaging/ocata/notification_listener.html
Change-Id: Ie37528263181924f84510500fc1277b0237c1df8
Partially-Implements: blueprint support-watcher-ha-active-active-mode
New releases of oslo.config support a 'mutable' parameter to Opts.
Configuration options are mutable if their oslo.config Opt's
mutable=True is set. This mutable setting is respected when the oslo
method mutate_config_files is called instead of reload_config_files.
Icec3e664f3fe72614e373b2938e8dee53cf8bc5e allows services to tell
oslo.service they want mutate_config_files to be called by specifying
the 'restart_method=mutate' parameter, what this patch does.
The default mutable configuration options (set by oslo.config Opts'
mutable=True) are:
- [DEFAULT]/pin_release_version
- [DEFAULT]/debug
- [DEFAULT]/log_config_append
Concrete params, that made mutable in Watcher:
* watcher_decision_engine.action_plan_expiry
* watcher_decision_engine.check_periodic_interval
* watcher_decision_engine.continuous_audit_interval
* gnocchi_client.query_max_retries
* gnocchi_client.query_timeout
* DEFAULT.periodic_interval
Change-Id: If28f2de094d99471a3ab756c947e29ae3d8a28a2
Implements: bp mutable-config
Check the creation time of the actionplan,
and set the state to SUPERSEDED if it has expired.
Change-Id: I900e8dc5011dec4cffd58913b9c5083a6131d70d
Implements: blueprint stale-action-plan
