1 files changed, 38 insertions, 0 deletions
diff --git a/qtip/loader/qpi.py b/qtip/loader/qpi.py
new file mode 100644
index 00000000..cfa918c5
--- /dev/null
+++ b/qtip/loader/qpi.py
@@ -0,0 +1,38 @@
+##############################################################################
+# Copyright (c) 2016 ZTE Corp and others.
+#
+# 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 base import BaseLoader
+from metric import MetricSpec
+
+from qtip.base.constant import PropName
+from qtip.utils.formula import Formula
+
+
+class QPISpec(BaseLoader):
+    """
+    a QPI specification defines how to calculate a performance index from
+     collected metrics.
+    """
+    RELATIVE_PATH = 'QPI'
+
+    def __init__(self, name, paths=None):
+        super(QPISpec, self).__init__(name, paths=paths)
+        content = self.content
+        self.formula = Formula(content[PropName.FORMULA])
+        self.sections = [Section(record, paths=paths)
+                         for record in content[PropName.SECTIONS]]
+
+
+class Section(object):
+    def __init__(self, content, paths=None):
+        self.name = content[PropName.NAME]
+        self.weight = content[PropName.WEIGHT]
+        self.formula = Formula(content[PropName.FORMULA])
+        self.metrics = [MetricSpec(record, paths=paths)
+                        for record in content[PropName.METRICS]]