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/*******************************************************************************
* ============LICENSE_START==================================================
* * org.onap.dmaap
* * ===========================================================================
* * Copyright © 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====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package org.onap.dmaap.datarouter.reports;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.onap.dmaap.datarouter.provisioning.utils.ProvDbUtils;
/**
* Generate a per-file latency report. It reports on the details related to one file published
* on one feed. This report can be further reduced in order to generate more specific reports
* based on feed ID or node name. The report is a .csv file containing the following columns:
* <table>
* <tr><td>recordid</td><td>the unique record ID assigned to a particular incoming feed</td></tr>
* <tr><td>feedid</td><td>the Feed ID for this record</td></tr>
* <tr><td>uri</td><td>the URI of the file delivered</td></tr>
* <tr><td>size</td><td>the size of the file delivered</td></tr>
* <tr><td>min</td><td>the minimum latency in delivering this feed to a subscriber (in ms)</td></tr>
* <tr><td>max</td><td>the maximum latency in delivering this feed to a subscriber (in ms)</td></tr>
* <tr><td>avg</td><td>the average latency in delivering this feed to all subscribers (in ms)</td></tr>
* <tr><td>fanout</td><td>the number of subscribers this feed was delivered to</td></tr>
* </table>
*
* @author Robert P. Eby
* @version $Id: LatencyReport.java,v 1.1 2013/10/28 18:06:53 eby Exp $
*/
public class LatencyReport extends ReportBase {
private class Event {
public final String type;
public final long time;
public Event(String t, long tm) {
type = t;
time = tm;
}
}
private class Counters {
public final String id;
public final int feedid;
public final long clen;
public final String fileid;
public final List<Event> events;
public Counters(String i, int fid, long c, String s) {
id = i;
feedid = fid;
clen = c;
fileid = s;
events = new ArrayList<>();
}
private long pubtime;
public void addEvent(String t, long tm) {
events.add(new Event(t, tm));
if (t.equals("pub"))
pubtime = tm;
}
public long min() {
long min = Long.MAX_VALUE;
for (Event e : events) {
if (e.type.equals("del")) {
min = Math.min(min, e.time - pubtime);
}
}
return min;
}
public long max() {
long max = 0;
for (Event e : events) {
if (e.type.equals("del")) {
max = Math.max(max, e.time - pubtime);
}
}
return max;
}
public long avg() {
long total = 0, c = 0;
for (Event e : events) {
if (e.type.equals("del")) {
total += e.time - pubtime;
c++;
}
}
return (c == 0) ? 0 : total / c;
}
public int fanout() {
int n = 0;
for (Event e : events) {
if (e.type.equals("del")) {
n++;
}
}
return n;
}
@Override
public String toString() {
return feedid + "," + fileid + "," + clen + "," + min() + "," + max() + "," + avg() + "," + fanout();
}
}
@Override
public void run() {
long start = System.currentTimeMillis();
try (Connection conn = ProvDbUtils.getInstance().getConnection();
PreparedStatement ps = conn.prepareStatement(
"select EVENT_TIME, TYPE, PUBLISH_ID, FEED_FILEID, FEEDID, CONTENT_LENGTH from LOG_RECORDS where "
+ "EVENT_TIME >= ? and EVENT_TIME <= ? order by PUBLISH_ID, EVENT_TIME")) {
ps.setLong(1, from);
ps.setLong(2, to);
try(ResultSet rs = ps.executeQuery()) {
try (PrintWriter os = new PrintWriter(outfile)) {
os.println("recordid,feedid,uri,size,min,max,avg,fanout");
Counters c = null;
while (rs.next()) {
long etime = rs.getLong("EVENT_TIME");
String type = rs.getString("TYPE");
String id = rs.getString("PUBLISH_ID");
String fid = rs.getString("FEED_FILEID");
int feed = rs.getInt("FEEDID");
long clen = rs.getLong("CONTENT_LENGTH");
if (c != null && !id.equals(c.id)) {
String line = id + "," + c.toString();
os.println(line);
c = null;
}
if (c == null) {
c = new Counters(id, feed, clen, fid);
}
if (feed != c.feedid)
System.err.println("Feed ID mismatch, " + feed + " <=> " + c.feedid);
if (clen != c.clen)
System.err.println("Cont Len mismatch, " + clen + " <=> " + c.clen);
c.addEvent(type, etime);
}
}
}
} catch (FileNotFoundException e) {
System.err.println("File cannot be written: " + outfile);
} catch (SQLException e) {
logger.error("SQLException: " + e.getMessage());
}
logger.debug("Query time: " + (System.currentTimeMillis() - start) + " ms");
}
}
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