1 files changed, 175 insertions, 0 deletions
diff --git a/base/common/src/com/netscape/certsrv/util/StatsEvent.java b/base/common/src/com/netscape/certsrv/util/StatsEvent.java
new file mode 100644
index 000000000..eafd90d05
--- /dev/null
+++ b/base/common/src/com/netscape/certsrv/util/StatsEvent.java
@@ -0,0 +1,175 @@
+// --- BEGIN COPYRIGHT BLOCK ---
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2007 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+package com.netscape.certsrv.util;
+
+import java.util.Enumeration;
+import java.util.Vector;
+
+/**
+ * A statistics transaction.
+ * <P>
+ * 
+ * @author thomask
+ * @version $Revision$, $Date$
+ */
+public class StatsEvent {
+    private String mName = null;
+    private long mMin = -1;
+    private long mMax = -1;
+    private long mTimeTaken = 0;
+    private long mTimeTakenSqSum = 0;
+    private long mNoOfOperations = 0;
+    private Vector<StatsEvent> mSubEvents = new Vector<StatsEvent>();
+    private StatsEvent mParent = null;
+
+    public StatsEvent(StatsEvent parent) {
+        mParent = parent;
+    }
+
+    public void setName(String name) {
+        mName = name;
+    }
+
+    /**
+     * Retrieves Transaction name.
+     */
+    public String getName() {
+        return mName;
+    }
+
+    public void addSubEvent(StatsEvent st) {
+        mSubEvents.addElement(st);
+    }
+
+    /**
+     * Retrieves a list of sub transaction names.
+     */
+    public Enumeration<String> getSubEventNames() {
+        Vector<String> names = new Vector<String>();
+        Enumeration<StatsEvent> e = mSubEvents.elements();
+        while (e.hasMoreElements()) {
+            StatsEvent st = e.nextElement();
+            names.addElement(st.getName());
+        }
+        return names.elements();
+    }
+
+    /**
+     * Retrieves a sub transaction.
+     */
+    public StatsEvent getSubEvent(String name) {
+        Enumeration<StatsEvent> e = mSubEvents.elements();
+        while (e.hasMoreElements()) {
+            StatsEvent st = e.nextElement();
+            if (st.getName().equals(name)) {
+                return st;
+            }
+        }
+        return null;
+    }
+
+    public void resetCounters() {
+        mMin = -1;
+        mMax = -1;
+        mNoOfOperations = 0;
+        mTimeTaken = 0;
+        mTimeTakenSqSum = 0;
+        Enumeration<String> e = getSubEventNames();
+        while (e.hasMoreElements()) {
+            String n = e.nextElement();
+            StatsEvent c = getSubEvent(n);
+            c.resetCounters();
+        }
+    }
+
+    public long getMax() {
+        return mMax;
+    }
+
+    public long getMin() {
+        return mMin;
+    }
+
+    public void incNoOfOperations(long c) {
+        mNoOfOperations += c;
+    }
+
+    public long getTimeTakenSqSum() {
+        return mTimeTakenSqSum;
+    }
+
+    public long getPercentage() {
+        if (mParent == null || mParent.getTimeTaken() == 0) {
+            return 100;
+        } else {
+            return (mTimeTaken * 100 / mParent.getTimeTaken());
+        }
+    }
+
+    public long getStdDev() {
+        if (getNoOfOperations() == 0) {
+            return 0;
+        } else {
+            long a = getTimeTakenSqSum();
+            long b = (-2 * getAvg() * getTimeTaken());
+            long c = getAvg() * getAvg() * getNoOfOperations();
+            return (long) Math.sqrt((a + b + c) / getNoOfOperations());
+        }
+    }
+
+    public long getAvg() {
+        if (mNoOfOperations == 0) {
+            return -1;
+        } else {
+            return mTimeTaken / mNoOfOperations;
+        }
+    }
+
+    /**
+     * Retrieves number of operations performed.
+     */
+    public long getNoOfOperations() {
+        return mNoOfOperations;
+    }
+
+    public void incTimeTaken(long c) {
+        if (mMin == -1) {
+            mMin = c;
+        } else {
+            if (c < mMin) {
+                mMin = c;
+            }
+        }
+        if (mMax == -1) {
+            mMax = c;
+        } else {
+            if (c > mMax) {
+                mMax = c;
+            }
+        }
+        mTimeTaken += c;
+        mTimeTakenSqSum += (c * c);
+    }
+
+    /**
+     * Retrieves total time token in msec.
+     */
+    public long getTimeTaken() {
+        return mTimeTaken;
+    }
+}