Implement calculator PoC

- use `mean` as default formula

Change-Id: I236b46c1e52f3535fb6e954d324790b1421126bd
Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

1 files changed, 66 insertions, 0 deletions

diff --git a/qtip/ansible_library/plugins/action/calculate.py b/qtip/ansible_library/plugins/action/calculate.py
new file mode 100644
index 00000000..030c4cde
--- /dev/null
+++ b/qtip/ansible_library/plugins/action/calculate.py
@@ -0,0 +1,66 @@
+#!/usr/bin/python
+
+###############################################################
+# Copyright (c) 2017 ZTE Corporation
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+
+from numpy import mean
+
+from ansible.plugins.action import ActionBase
+
+
+class ActionModule(ActionBase):
+    def run(self, tmp=None, task_vars=None):
+
+        if task_vars is None:
+            task_vars = dict()
+
+        result = super(ActionModule, self).run(tmp, task_vars)
+
+        if result.get('skipped', False):
+            return result
+
+        spec = self._task.args.get('spec')
+        metrics = self._task.args.get('metrics')
+
+        return calc_qpi(spec, metrics)
+
+
+def calc_qpi(qpi_spec, metrics):
+    section_results = [{'name': s['name'], 'result': calc_section(s, metrics)}
+                       for s in qpi_spec['sections']]
+    # TODO(yujunz): use formula in spec
+    qpi_score = mean([r['result']['score'] for r in section_results])
+    return {
+        'spec': qpi_spec,
+        'score': qpi_score,
+        'section_results': section_results,
+        'metrics': metrics
+    }
+
+
+def calc_section(section_spec, metrics):
+    metric_results = [{'name': m['name'], 'result': calc_metric(m, metrics[m['name']])}
+                      for m in section_spec['metrics']]
+    # TODO(yujunz): use formula in spec
+    section_score = mean([r['result']['score'] for r in metric_results])
+    return {
+        'score': section_score,
+        'metric_results': metric_results
+    }
+
+
+def calc_metric(metric_spec, metrics):
+    # TODO(yujunz): use formula in spec
+    workload_results = [{'name': w['name'], 'score': mean(metrics[w['name']]) / w['baseline']}
+                        for w in metric_spec['workloads']]
+    metric_score = mean([r['score'] for r in workload_results])
+    return {
+        'score': metric_score,
+        'workload_results': workload_results
+    }