mnl/VM-Operator
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages 4 Wiki Activity Actions

Make class thread safe.

Browse source
This commit is contained in:
Michael Lipp 2024-04-17 11:20:11 +02:00
parent 98f5c1e402
commit b58c813e89
1 changed files with 25 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

54
org.jdrupes.vmoperator.vmconlet/src/org/jdrupes/vmoperator/vmconlet/TimeSeries.java
View file

@ -20,6 +20,7 @@ package org.jdrupes.vmoperator.vmconlet;
import java.time.Duration;
import java.time.Instant;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
@ -30,7 +31,8 @@ import java.util.List;
@SuppressWarnings("PMD.DataflowAnomalyAnalysis")
public class TimeSeries {
private final List<Entry> data = new LinkedList<>();
@SuppressWarnings("PMD.LooseCoupling")
private final LinkedList<Entry> data = new LinkedList<>();
private final Duration period;
/**
@ -52,25 +54,26 @@ public class TimeSeries {
@SuppressWarnings("PMD.AvoidLiteralsInIfCondition")
public TimeSeries add(Instant time, Number... numbers) {
var newEntry = new Entry(time, numbers);
boolean adjust = false;
if (data.size() >= 2) {
var lastEntry = data.get(data.size() - 1);
var lastButOneEntry = data.get(data.size() - 2);
adjust = lastEntry.valuesEqual(lastButOneEntry)
&& lastEntry.valuesEqual(newEntry);
}
if (adjust) {
data.get(data.size() - 1).adjustTime(time);
} else {
boolean nothingNew = false;
synchronized (data) {
if (data.size() >= 2) {
var lastEntry = data.get(data.size() - 1);
var lastButOneEntry = data.get(data.size() - 2);
nothingNew = lastEntry.valuesEqual(lastButOneEntry)
&& lastEntry.valuesEqual(newEntry);
}
if (nothingNew) {
data.removeLast();
}
data.add(new Entry(time, numbers));
}
// Purge
Instant limit = time.minus(period);
while (data.size() > 2
&& data.get(0).getTime().isBefore(limit)
&& data.get(1).getTime().isBefore(limit)) {
data.remove(0);
// Purge
Instant limit = time.minus(period);
while (data.size() > 2
&& data.get(0).getTime().isBefore(limit)
&& data.get(1).getTime().isBefore(limit)) {
data.removeFirst();
}
}
return this;
}
@ -81,14 +84,16 @@ public class TimeSeries {
* @return the list
*/
public List<Entry> entries() {
return data;
synchronized (data) {
return new ArrayList<>(data);
}
}
/**
* The Class Entry.
*/
public static class Entry {
private Instant timestamp;
private final Instant timestamp;
private final Number[] values;
/**
@ -103,15 +108,6 @@ public class TimeSeries {
values = numbers;
}
/**
* Changes the entry's time.
*
* @param time the time
*/
public void adjustTime(Instant time) {
timestamp = time;
}
/**
* Returns the entry's time.
*