Source code for watcher.decision_engine.goal.efficacy.specs

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# Copyright (c) 2016 b<>com
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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# http://www.apache.org/licenses/LICENSE-2.0
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from watcher._i18n import _
from watcher.decision_engine.goal.efficacy import base
from watcher.decision_engine.goal.efficacy import indicators
from watcher.decision_engine.solution import efficacy



[docs]class Unclassified(base.EfficacySpecification):


[docs]    def get_indicators_specifications(self):
        return ()



[docs]    def get_global_efficacy_indicator(self, indicators_map):
        return None




[docs]class ServerConsolidation(base.EfficacySpecification):


[docs]    def get_indicators_specifications(self):
        return [
            indicators.ReleasedComputeNodesCount(),
            indicators.InstanceMigrationsCount(),
        ]



[docs]    def get_global_efficacy_indicator(self, indicators_map=None):
        value = 0
        if indicators_map and indicators_map.instance_migrations_count > 0:
            value = (float(indicators_map.released_compute_nodes_count) /
                     float(indicators_map.instance_migrations_count)) * 100

        return efficacy.Indicator(
            name="released_nodes_ratio",
            description=_("Ratio of released compute nodes divided by the "
                          "number of VM migrations."),
            unit='%',
            value=value,
        )