[POLICY-73] replace openecomp for policy-engine

[policy/engine.git] / ONAP-XACML / src / main / java / org / onap / policy / xacml / util / MetricsUtil.java

diff --git a/ONAP-XACML/src/main/java/org/onap/policy/xacml/util/MetricsUtil.java b/ONAP-XACML/src/main/java/org/onap/policy/xacml/util/MetricsUtil.java
new file mode 100644 (file)
index 0000000..91e99b8
--- /dev/null
+++ b/ONAP-XACML/src/main/java/org/onap/policy/xacml/util/MetricsUtil.java
@@ -0,0 +1,80 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP-XACML
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.policy.xacml.util;
+
+public class MetricsUtil {
+       
+       public static class AvgLatency {
+               private long cumLatency = 0;
+               private long count = 0;
+               
+               public void compute(long latency) {
+                       cumLatency += latency;
+                       count++;
+               }
+               
+               public long avg() {
+                       if (count == 0)
+                               return 0;
+                       
+                       return (cumLatency / count);
+               }
+               
+               public void reset() {
+                       cumLatency = 0;
+                       count = 0;
+               }
+       }
+
+       public static class MinLatency {
+               private long min = Long.MAX_VALUE;
+               
+               public synchronized void compute(long ts) {
+                       if (ts < min)
+                               min = ts;
+               }
+               
+               public long min() {
+                       return min;
+               }
+               
+               public void reset() {
+                       min = Long.MAX_VALUE;
+               }
+       }
+
+       public static class MaxLatency {
+               private long max = Long.MIN_VALUE;
+               
+               public synchronized void compute(long ts) {
+                       if (ts > max)
+                               max = ts;
+               }
+               
+               public long max() {
+                       return max;
+               }
+               
+               public void reset() {
+                       max = Long.MIN_VALUE;
+               }
+       }
+
+}