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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.provisioning;
import com.yahoo.vespa.hosted.provision.Node;
import com.yahoo.vespa.hosted.provision.NodeList;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.util.ArrayList;
import java.util.List;
/**
* @author smorgrav
*/
public class AllocationVisualizer extends JPanel {
// Container box's width and height
private static final int BOX_WIDTH = 1024;
private static final int BOX_HEIGHT = 480;
// node properties
private int nodeWidth = BOX_WIDTH / 15;
private int nodeHeight = nodeWidth / 2;
private int nodeSpacing = nodeWidth / 3;
private final List<AllocationSnapshot> steps;
int step = 0;
public AllocationVisualizer() {
this(new ArrayList<>());
}
public AllocationVisualizer(List<AllocationSnapshot> steps) {
this.steps = steps;
this.setPreferredSize(new Dimension(BOX_WIDTH, BOX_HEIGHT));
JButton back = new JButton("Back");
back.addActionListener(e -> {
if (step > 0) step -= 1;
repaint();
});
JButton forward = new JButton("Forward");
forward.addActionListener(e -> {
if (step < steps.size() - 1) step += 1;
repaint();
});
this.add(back);
this.add(forward);
}
public void addStep(List<Node> nodes, String task, String message) {
steps.add(new AllocationSnapshot(NodeList.copyOf(nodes), task, message));
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (steps.size() == 0) return;
int nodeX = 40;
int nodeY = BOX_HEIGHT - 20; //Start at the bottom
// Draw the box
g.setColor(Color.WHITE);
g.fillRect(0, 0, BOX_WIDTH, BOX_HEIGHT);
// Find number of docker hosts (to calculate start, and width of each)
// Draw the docker hosts - and color each container according to application
AllocationSnapshot simStep = steps.get(step);
NodeList hosts = simStep.nodes.hosts();
for (Node host : hosts) {
// Paint the host
paintNode(host, g, nodeX, nodeY, true);
// Paint containers
NodeList containers = simStep.nodes.childrenOf(host);
for (Node container : containers) {
nodeY = paintNode(container, g, nodeX, nodeY, false);
}
// Next host
nodeX += nodeWidth + nodeSpacing;
nodeY = BOX_HEIGHT - 20;
}
// Display messages
g.setColor(Color.BLACK);
g.setFont(new Font("Courier New", Font.BOLD, 15));
g.drawString(simStep.task, 20, 30);
g.drawString(simStep.message, 20, 50);
}
private int paintNode(Node node, Graphics g, int x, int y, boolean isHost) {
if (isHost) {
g.setColor(Color.GRAY);
for (int i = 0; i < node.resources().memoryGb(); i++) {
g.fillRect(x, y - nodeHeight, nodeWidth, nodeHeight);
y = y - (nodeHeight + 2);
}
} else {
g.setColor(Color.YELLOW);
int multi = (int) node.resources().memoryGb();
int height = multi * nodeHeight + ((multi - 1) * 2);
g.fillRect(x, y - height, nodeWidth, height);
// Write tenant name in allocation
String tenantName = node.allocation().get().owner().tenant().value();
g.setColor(Color.BLACK);
g.setFont(new Font("Courier New", Font.PLAIN, 12));
g.drawString(tenantName, x + nodeWidth / 2 - 20, y - height / 2);
y = y - height - 2;
}
return y;
}
public static void visualize(List<AllocationSnapshot> snaps) {
AllocationVisualizer visualisator = new AllocationVisualizer(snaps);
javax.swing.SwingUtilities.invokeLater(() -> {
JFrame frame = new JFrame("Allocation Simulator");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setContentPane(visualisator);
frame.pack();
frame.setVisible(true);
});
while(true) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
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